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1. 36 External Overload teens 37 Compressor Single Phase Resistance Test 37 Compressor 38 39 Routine Maintenance 39 Troubleshooting Charts 40 41 Wiring Diagrams for Wall Mounted Thermostats 42 43 Wiring Diagram 42 44 RT6 Installation Operation and Application Guide 45 46 Thermistors Resistance Values 47 48 licum 49 PTAC Exploded 50 PTAC Parts List PDE PDH Models 51 52 Addendum Display Configeration Instructions 53 54 IMPORTANT SAFETY INFORMATION The information contained in this manual is intended for use by a qualified service technician who is familiar with the safety procedures required for installation and repair and who is equipped with the proper tools and test instruments required to service this product Installation or repairs made by unqualified persons can result in subjecting the unqualified person making such repairs as well as the persons being served by the equipment to hazards resulting in injury or electrical shock which can be serious or even fatal Safety warnings have been placed throughout this manual to alert you to potential hazards that may be encountered If you instal
2. 208 230 265 FN LL t Q o uj 2 z 3 2 E CAP Rev Solenoid WIRE COLOR ID GR Green 5 or Q L2TB zx gt U A L1TB B BL FIT Auto Reset BN Limit BN yg EZB RIO LAE Electronic Thermostat 1 Stage Heat 1 Stage Cool Systems Configurable to 2 stage heat pump Large Display With Backlight Selectable Fahrenheit or Celsius Installation Operation amp Application Guide Parts Diagram Up button Down button Right fan button Left system button Reset L Configuration _ Lo Hi fan Switch Switch Switch Icon Descriptions Fan operation icon h Le E Reor temperare COOL Cooling operation icon Heating operation icon HEAT Heat set point when blinking Cool set point when blinking Specifications Electrical rating 24 VAC 18 30 VAC 1 amp maximum per terminal 3 maximum total load Temperature control range 45 F to 90 F 7 C to 32 C Accuracy 1 F 0 5 System configurations 2 stage heat 1 stage cool heat pump electric Timing Anti short Cycle 4 minutes bypass anti short cycle delay by returning to OFF mode for 5 seconds Backlight Operation 10 seconds Terminations R C GL GH O B Y
3. 23 Malfunction Analysis 24 26 Components Testing u uu u uu u u wu l sus 27 28 Refrigeration System Sequence of Operation 29 Sealed Refrigeration System Repairs 30 Refrigerant Charging uu 31 Method ul u 31 Undercharged Refrigerant Systems 31 32 Overcharged Refrigerant Systems 32 Restricted Refrigerant Systems 32 Capillary Tube Systems Check Valve 33 Reversing Valve Description Operation 34 Tesungeollu k AMARE 34 Checking Reversing Valves 34 35 Reversing Valve Touch Testing Heating Cooling Cycle 35 Procedure For Changing Reversing Valve 35 36 Compressor Checks 36 Locked Rotor Voltage 36 Single Phase Connections 36 Determine Locked Rotor Voltage 36 Locked Rotor Amperage Test 36 Single Phase Running amp Locked Rotor Amperage 36 Checking the Overload
4. sz na we 22 os wo ms Electric Heat Data PDE12K0 PDE PDH12K PDE PDH12R ze xe 2 2 mo me o se seo 10236 sues vro voe eanne current Ames o ss ma 122 ms s 75 na oo sse 212 os wo ms Electric Heat Data eo 15 PDE PDH15K PDE PDH15R mue me mo me x _ o seo 10236 veo 190 c02 sos eanne current Ames o mz v2 ms re o1 na 18 22 os wo ms ELECTRICAL RATING TABLES WARNING Use ONLY type and size fuse or HACR circuit breaker indicated on unit s rating FUSE CIRCUIT plate Proper current protection to the unit BREAKER is the responsibility of the owner NOTE ELECTRIC SHOCK HAZARD Turn off electric power before service or installation All electrical connections and wiring MUST be installed by a qualified electrician and conform to the National Electrical Code and all local codes which have jurisdiction Failure to do so could result in serious personal injury or death A time delay fuse is provided with 265V units Unit MUST be grounded from branch circui
5. Friedrich PTAC units use environmentally friendly refrigerant HVAC Engineering Specifications Digital Packaged Terminal Air Conditioners amp Heat Pumps Cooling 7600 15 000 Btuh Heating 7600 14500 Btuh Heat Pump 6824 17060 Btuh Electric Heat Friedrich Models PDE Cooling with or without electric heat PDH Heat Pump with electric heat All units shall be factory assembled piped wired and fully charged with R 410A All units shall be certified in accordance with ARI Standard 310 for air conditioners and ARI standard 380 for heat pumps Units shall be UL listed and carry a UL label All units shall be factory run tested to check operation and be Friedrich or equivalent The basic unit shall not exceed 16 high x 42 wide Overall depth of the unit from the rear of the Friedrich wall sleeve to the front of the decorative front cover shall not exceed 21 4 The unit shall be designed so that room intrusion may be as little as 7 72 Installations in walls deeper than 13 74 may be accomplished with the use of a deep wall sleeve PDXWSEXT Unit shall draw in ambient air through both sides of an outdoor architectural louver or grille measuring 42 wide x 16 high and shall exhaust air out middle portion of the louver The architectural louver and wall sleeve shall be designed so that the louver may be installed from the inside of the building REFRIGERATION SYSTEM The refrigeration system shall be her
6. ID ID DID DID ID ID ID DID DID DID DID ID ID ID DID DID DID ID AID Ht DID ID ID DID DID ID ID ID ID ID ID ID DID DID ID DID ID ID DID DID ID ID ID DID DID DID DID ID ID ID DID DID DID ID ID DID Ht 8700110 _ 168700110 51 52 2011 PTAC PARTS LIST MODELS I 2 e 5 3 gt 3 a o o Capillary Tube Ass o Chassis Flange Left D o o m D 2 Condenser Coil Condenser Fan Blade Control Door Q o 5 U o 5 lt e D m o c Cross flow fan support left resh Air Door resh Air Door Cable resh Air Door Filter resh Air Door Lever ront Panel Assy Complete ront Panel clip 3 g o o zh B 3 L 9 p ko o N o D v a a 2 oS 9 o 2 D S d o S 5 m T m m m m m I m eater Wiring Block Board unction box 5 unction lid ower cover of Fresh Air Door Lever ole Ic lt ogic board otor Bracket Indoor Overload Protector Shroud Brace Terminal Board Input power Thermal baffle Top Cover Plate Sub Ass Transformer ndoor Coil Thermistor Upper cover of Fresh Air Door Lever Wiring Terminal 2 position 24VAC Wiring Terminal 7 position 24VA
7. Many compressor failures are caused by the following conditions 1 Improper air flow over the evaporator 2 Overcharged refrigerant system causing liquid to be returned to the compressor 3 Restricted refrigerant system 4 Lack of lubrication 5 Liquid refrigerant returning to compressor causing oil to be washed out of bearings 6 Noncondensables such as air and moisture in the system Moisture is extremely destructive to a refrigerant system 37 38 COMPRESSOR REPLACEMENT Recommended procedure for compressor replacement AWARNING RISK OF ELECTRIC SHOCK Unplug and or disconnect all electrical power to the unit before performing inspections maintenances or service Failure to do so could result in electric shock serious injury or death 1 Be certain to perform all necessary electrical and refrigeration tests to be sure the compressor is actually defective before replacing WARNING HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure Proper safety procedures must be followed and proper protective clothing must be worn when working with refrigerants Failure to follow these procedures could result in serious injury or death 2 Recover all refrigerant from the system though the process tubes PROPER HANDLING OF RECOVERED REFRIGERANT ACCORDING TO EPA REGULATIONS IS REQUIRED Do not use gauge manifold for this purpose if there has bee
8. Sep Chassis Specifications PDE Series PDEOZK PDEO7R PDEOSK PDEO9R PDE12K PDE12R PDE15K PDE15R PERFORMANCE DATA COOLING BTUh POWER WATTS EER mama ns 107 98 DEHUMIIFICATION pnis SENSIBLE HEAT RATIO ELECTRICAL DATA VOLTAGE 1 PHASE 60 Hz VOLT RANGE CURRENT AMPS POWER FACTOR os os 09 os Compressor LRA Compressor RLA 28 24 37 29 so a ee se Fan molor horsepower 0 031 AIRFLOW DATA PHYSICAL DATA PDH Series l c 9 9 Uz PpDHO7K PDH07R PDH09K PDH09R PDH12K PDH12R PDH15K PDH15R PERFORMANCE DATA EER 2092 tama na 107 osr os DEHUMIDIFICATION pints SENSIBLE HEAT RATIO 081 ELECTRICAL DATA VOLTAGE 1 PHASE 60 Hz VOLT RANGE CURRENT AMPS REVERSE HEAT Amps POWER FACTOR os os os AIRFLOW DATA PHYSICAL DATA Due to continuing research in new energy saving technology specifications are subject to change without notice 250 V Receptacles and Fuse Types 1 P P PERFORMANCE PERFORMANCE CERTIFIED CERTIFIED ARI Standard 310 380 ARI Standard 310 380 Packaged Terminal AC Packaged Terminal HP L C L www aridirectory org www aridirectory org AMPS HEATER SIZE 0 2 0 kW 3 0kW 5 0kW RECEPTACLE 11 Cooling amp Heating Performance PDE 230V Extended Cooling Performa
9. art 8700138 8700057 8700152 8700015 8700127 8700147 8700134 8700118 8700107 8700113 8700091 8700017 8700124 8700125 8700001 8700102 8700135 8700145 8700158 8700129 8700130 8700136 8700131 8700143 8700122 8700151 8700032 8700014 8700141 8700087 8700070 8700137 8700121 8700133 8700139 8700148 8700144 8700128 8700098 8700126 8700115 8700120 8700117 8700150 8700105 8700156 8700123 8700119 8700103 8700132 8700116 8700112 8700149 8700154 8700155 8700046 8700110 n a 68700153 Part 8700096 8700096 8700127 8700127 7 8700118 8700100 8700113 8700108 0 Capillary Tube Ass 8700085 8700085 Chassis Flange Right 8700124 8700124 DID Supp ass 8700147 8700147 Bellows Drain Valve 8700134 8700134 DID a 5 oo x F Chassis Flange Left 8700125 8700125 8700050 8700049 Condenser Coil 8700081 8700081 2 3 DID Condenser Fan Blade 8700135 8700135 8700145 8700145 Control Panel Overlay Escutcheon 8700158 8700158 4 5 6 7 Cross flow fan support left 8700129 8700129 8700131 8700131 Discharge Grille 8700143 8700143 8700122 8700122 Display Board 8700151 8700151 Electric Box Ass 8700028 8700030 DID 8700079 _ 68700079 Evaporator Foam Drain Tra 8700141 8700141 Fan Motor Condenser 8700087 8700088 8700072 8700073 Fan Shroud Motor Mount 8700
10. W Important Safety Information WARNING Always turn off power at the main power supply before installing cleaning or removing thermostat This thermostat is for 24 VAC applications only do not use on voltages over 30 VAC All wiring must conform to local and national electrical and building codes Do not use air conditioning when the outdoor temperature is below 50 degrees this can damage your A C system and cause personal injuries Use this thermostat only as described in this manual Package Contents Tools Required Package includes RT6 thermostat on base thermostat cover wiring labels screws and wall anchors Installation Operation and Application Guide Tools required for installation Drill with 3 16 bit hammer screwdriver To Remove Existing Thermostat ELECTRICAL SHOCK HAZARD Turn off power at the main service panel by removing the fuse or switching the appropriate circuit breaker to the OFF position before removing the existing thermostat 1 Turn off power to the heating and cooling system by removing the fuse or switching the appropriate circuit breaker off Remove cover of old thermostat This should expose the wires Label the existing wires with the enclosed wire labels before removing wires After labeling wires remove wires from wire terminals Remove existing thermostat base from wall Refer to the following section for instructions on how to install this thermostat AaRWN To
11. from terminals common to run C to R Add values C to S and to together and check resistance from start to run terminals 5 to R Resistance S to R should equal the total of C to S and C to R In a single phase PSC compressor motor the highest value will be from the start to the run connections 5 to The next highest resistance is from the start to the common connections S to C The lowest resistance is from the run to common C to R Before replacing a compressor check to be sure it is defective NOTE OHM Figures are for examples only not actual values for the compressor Ley 49 OHMS C 3 16 OHMS 3 65 OHMS RESISTANCE Stoc RESISTANCE RtoC EQUALS RESISTANCE StoR GROUND TEST Use an ohmmeter set on its highest scale Touch one lead to the compressor body clean point of contact as a good connection is a must and the other probe in turn to each compressor terminal If a reading is obtained the compressor is grounded and must be replaced Check the complete electrical system to the compressor and compressor internal electrical system check to be certain that compressor is not out on internal overload Complete evaluation of the system must be made whenever you suspect the compressor is defective If the compressor has been operating for sometime a careful examination must be made to determine why the compressor failed
12. 2 2 2 2 21 22 26 ce 2s 26 26 25 25 sm em ose ou em os oss os ose os oar oss sm ow os o oor os om asi or os ow os erus 152 12012 12000 10020 12006 10740 warts sw se ewe sore van vm vs wes sm o os os oor os en ow esr oz os os os oo eru 149 140 15602 12000 were maar 12007 owes C OENE EER ERER RATING EE ARI 310 380 Extended Heating Performance OUTDOOR DRY BULB TEMP DEGREES F PDH 265V Extended Cooling Performance RATING POINT ARI 310 380 14 Electric Heat Data Electric Heat Data PDEO7KO PDE PDHO7K PDE PDHO7R pret 205 zo me _ eewmwosrus o se sse come voz eanne current o ss wa wa o na 100 we ss os Electric Heat Data xe m ze m me 2 _ o sse 10236 veo 12900 c02 sos eanne cunrenTiawrsy o sz 12 ms re
13. 3 3 3 a3 055 072 0 0 074 os 052 om os oss os oss osr oss 9 3 0 91 Brun rz 43572_ 12564 13440 12672 11688 12912 12000 10620 12096 10740 oase 1074 wars f om s sw se 08 wo no ior 1320 7 57 n 09 os 7 93 9 ames 31 31 33 33 33 37 am 37 4 4 4 43 S HR 049 089 os oe 091 o5 051 075 os o 9264 066 oso os 06 091 o5 om 091 051 075 092 05 0 91 17052 16400 15182 16240 15312 14123 15602 14500 12833 14616 12978 11441 13007 1145 amps 54 55 ss 59 59 59 65 66 71 m 71 77 SR 048 06 0 049 068 049 oro oo 05 oo 053 079 oo RATING POINT ARI 310 380 Extended Heating Performance OUTDOOR DRY BULB TEMP DEGREES F 7 __ hl gt m 5 647 5 T 33 883 1 3 3 2 7 0 8 9 0 4 5 6 4 6 720 5 5 3 4 5 8 T 4 1 T 9 4 3 5250 gt 9245 5 7 gt 7726 8531 10700 11278 12234 1039 1073 4 l 5 5 2 3 3 3 4 5 2 ow w ns S ms 25 l 295 9 4 gt U w c T
14. 3 controls the fan mode see page 23 for setting Emergency Heat Operation In the event of a compressor failure in heat pump mode the compressor may be locked out to provide heat through the resistance heater This feature ensures that even in the unlikely event of a compressor failure the room temperature can be maintained until the compressor can be serviced Dip switch 1 controls the emergency heat setting see page 23 Fan Mode All units are shipped with fan mode set to continuous for cooling and cycle for heating Fan Only Mode Pressing the Fan button will run the fan to allow for air circulation in the room without operating the compressor or heater regardless of the room or set temperature The fan speed selection is made by pressing either the High Fan Med Fan or Low Fan button Cycle Continuous The owner may choose between fan cycling or fan continuous mode based on property preference Note Even heat monitoring and quiet start stop fan delay only operate in fan cycle mode Fan continuous mode is used to keep constant airflow circulation in the room during all times the unit is ON Fan cycle will conserve energy by only operating the fan while the compressor or electric heater is operating Dip switch 3 4 controls the fan mode see page 23 for setting 21 22 Digital Control User Input Configuration The adjustable control dip switches are located at the lower left hand portion of the digital Smart Center The
15. Accurate refrigerant charge measuring device such as a Balance Scales 1 2 oz accuracy b Charging Board 1 2 oz accuracy A WARNING RISK OF ELECTRIC SHOCK Unplug and or disconnect all electrical power to the unit before performing inspections maintenances or service Failure to do so could result in electric shock serious injury or death A WARNING HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure Proper safety procedures must be followed and proper protective clothing must be worn when working with refrigerants Failure to follow these procedures could result in serious injury or death Refrigerant Charging Proper refrigerant charge is essential to proper unit opera tion Operating a unit with an improper refrigerant charge will result in reduced performance capacity and or efficiency Accordingly the use of proper charging methods during ser vicing will insure that the unit is functioning as designed and that its compressor will not be damaged 9 High Pressure Gauge 0 750 Ibs 10 Low Pressure Gauge 30 200 Ibs 11 Vacuum Gauge 0 1000 microns 12 Facilities for flowing nitrogen through refrigeration tubing during all brazing processes EQUIPMENT MUST BE CAPABLE OF 1 Recovering refrigerant to EPA required levels 2 Evacuation from both the high side and low side of the system simultaneously 3 Introducing refrigerant
16. Big system small room Reveiving distance of remote control Replace the battery Replace the battery is too short LCD display flashes or when pressing the transmit button the entire screen Battery s capacity is insufficient Replace the battery is displayed Slect the A C which is applicable to the room areas 26 LED display is found short of stroke The LCD frame hasn t fixed well Fix the LCD frame properly The compressor hasn t installed well and the Check whether the base is firm base is unstable The unit hasn t placed flatly and stable Adjust the unit s position Vibration and noise are abnormal The unit s support is unstable Strengthen the support or refit it There are foreign objects on the unit Get rid of the foreign objects Screws are loosened Tighten the screws As for the above malfunction analysis there aren t malfunction related to heating for the cooling only unit COMPONENTS TESTING BLOWER FAN MOTOR Asingle phase permanent split capacitor motor is used to drive the evaporator blower and condenser fan A self resetting overload is located inside the motor to protect against high temperature and high amperage conditions AWARNING ELECTRIC SHOCK HAZARD Disconnect power to the unit before servicing Failure to follow this warning could result in serious injury or death BLOWER FAN MOTOR TEST 1 Make sure the motor has cooled down 2 Disconnect the fan motor wir
17. Heating mode The air temperature offset is used to adjust the room air temperature display when in cooling heating modes if the actual room temp is differentthan the displayed Adjustment allowed to 6 in both cooling and heating with 0 being the default 2 Default Cooling Offset 3 Default Heating Offset 54 Display Configuration Mode Options continued 4 Indoor Temperature display Changes between Set point only display during cooling and heating modes SP or displaying ambient room temperature during cooling and heating modes AA SP is the default setting If SP Set Point is the selected option only the set point will be displayed during cooling and heating modes regardless of what the room temperature is If AA Ambient Air mode is selected the room temperature is displayed during cooling and heating modes There will be a small dot LED on the bottom right comer of the display this signifies that the display is configured to AA Ambient Air e If the mode button has been changed to cooling or heating SP Set Point will be displayed for 10 seconds before returning to AA Ambient Air mode e When powering on the unit SP Set Point will be displayed for 10 seconds to show last programmed SP before returning to AA Ambient Air mode e During the cooling or heating modes if either the up or down arrow is pressed SP Set Point will be displaye
18. Restriction Outdoor Coil Refrigerant System Reversing Valve not Reversing Valve not Overcharged Restriction Fully Seated Fully Seated Undercharged Overcharged Undercharged System Non Condensables air Defective Compressor Defective Compressor TROUBLESHOOTING CHART HEATING REFRIGERANT SYSTEM DIAGNOSIS HEATING PROBLEM PROBLEM PROBLEM PROBLEM LOW SUCTION PRESSURE HIGH SUCTION PRESSURE LOW HEAD PRESSURE HIGH HEAD PRESSURE Low Air Flow Across Outdoor Ambient Too High Refrigerant System Outdoor Ambient Too High Outdoor Coil for Operation in Heating Restriction For Operation In Heating Refrigerant System Reversing Valve not Reversing Valve not Low Air Flow Across Restriction Fully Seated Fully Seated Indoor Coil Undercharged Overcharged Undercharged Overcharged Defective Compressor Defective Compressor ide x air ELECTRICAL TROUBLESHOOTING CHART HEAT PUMP AWARNING CAUTION ELECTRIC SHOCK HAZARD BURN HAZARD Turn off electric power before service or Certain unit components operate at installation temperatures hot enough to cause burns Extreme care must be used if it becomes Proper safety procedures must be followed necessary to work on equipment with power E and proper protective clothing must be applied worn Failure to do so could result in serious injury Failure to do so could result in minor to or death moderate injury HEAT PUMP SYSTEM COOLS WHEN HEATING IS DESIRED Is Line Voltage Present at th
19. Wall Thermostat operation the Dip Switches 3 4 5 amp 6 will be disabled DIGITAL CONTROL DIAGNOSTICS The chart below lists malfunctions and their description Ls ester con nan emo tec STATUS aah omes ad oe repent STATUS res ae T s STATUS ash 9 imes and af ee 23 MALFUNCTION ANALYSIS Switch is at the OFF position or socket and plug is No power supply loosened or power wire has malfunction or power failure Fuse is burned out Replace the fuse Inspect the supply voltage If it is lower 10 of the rated voltage pleaselook for the reason improve the Supply voltage is too low Check if optional switch ON OFF is disconnected with the wire or it s with mechanical failure use the universal meter to check if contacts of the switch are conducting if not replace it with a new one with the same model and specification Switch is broken down Failure of crystal oscillator or reset circuit Replace those parts which have malfunction Check the circuit and connect the wire according to the The wire is loosened electric diagram attached to the unit Transformer is broken Replace the transformer Replace the controller Controller is broken Receiver head is loosened First press the AUTO button of the manual switch If the re button is normal recheck if the installation and connection of Receiver head is broken or it isn t
20. after a call for second stage This extra savings feature is used to temporarily lock out auxiliary heat devices R allowing just heat pump to try to satisfy heat call 200 Press the up down button to select Press the right button to advance to the next screen 7 Maximum Heat Setpoint 45 F to 90 F 7 C to 32 C Adjust to control the maximum heat set temperature allowed f Press the up or down button to select HI Press the right button to advance to the next screen 8 Minimum Cool Setpoint 45 F to 90 F 7 C to 32 C Adjust to control the minimum cool set temperature allowed Press the up or down button to select Press the right button to advance to the next screen 9 Room Temperature Offset 9 F to 9 F 4 5 C to 4 5 C Adjust to calibrate displayed room temperature to match actual room temperature Note When not set to 0 2 will display Press the up or down button to select Press the right button to advance to the next screen Mode of Operation The RT6 is a 1 stage or 2 stage heat thermostat It functions with air conditioning heat pumps or electric heat systems The thermostat activates the heating appliance when the room temperature is below the set heat temperature by the differential temperature The RT6 will stop outputting when the call for heat has been satisfied With heat pumps the thermostat will not let the compressor come on for 4 mi
21. charge into high side of the system 4 Accurately weighing the refrigerant charge introduced into the system Too much refrigerant overcharge in the system is just as bad if not worse than not enough refrigerant undercharge They both can be the source of certain compressor failures if they remain uncorrected for any period of time Quite often other problems such as low air flow across evaporator etc are misdiagnosed as refrigerant charge problems The refrigerant circuit diagnosis chart will assist you in properly diagnosing these systems An overcharged unit will at times return liquid refrigerant slugging back to the suction side of the compressor eventually causing a mechanical failure within the compressor This mechanical failure can manifest itself as valve failure bearing failure and or other mechanical failure The specific type of failure will be influenced by the amount of liquid being returned and the length of time the slugging continues Not enough refrigerant undercharge on the other hand will cause the temperature of the suction gas to increase to the point where it does not provide sufficient cooling for the compressor motor When this occurs the motor winding temperature will increase causing the motor to overheat and possibly cycle open the compressor overload protector Continued overheating of the motor windings and or cycling of the overload will eventually lead to compressor motor or overload fail
22. determing this is the problem replace the reversing valve After all of the previous inspections and checks have been made and determined correct then perform the Touch Test on the reversing valve FROM OUTDOOR COIL TO COMPRESSOR SUCTIO BOTH THE SAME TEMPERATURE BOTH THE SAME TEMPERATURE Reversing Valve in Cooling Mode Touch Test in Heating Cooling Cycle A WARNING BURN HAZARD Certain unit components operate at temperatures hot enough to cause burns Proper safety procedures must be followed and proper protective clothing must be bli ______ _ _ worn Failure to follow these procedures could result in minor to moderate injury The only definite indications that the slide is in the mid position is if all three tubes on the suction side of the valve are hot after a few minutes of running time NOTE A condition other than those illustrated above and on Page 31 indicate that the reversing valve is not shifting properly Both tubes shown as hot or cool must be the same corresponding temperature Procedure For Changing Reversing Valve AWARNING HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure Proper safety procedures must be followed and proper protective clothing must be worn when working with refrigerants Failure to follow these procedures could result in serious injury or death NOTICE FIRE HAZARD The use of a torch requir
23. filters shall be washable and reusable by cleaning with water or by vacuuming The chassis shall have a built in damper capable of providing at least 75 CFM offresh air into the conditioned area A fine mesh screen shall filter the incoming fresh air There must be a provision for locking the damper closed to ensure a proper seal OUTDOOR AIR HANDLING SECTION The outdoor air section shall consist of a single injection molded fan shroud that incorporates the outdoor motor mount into a single piece for ease of service and assembly The outdoor motor shall be totally enclosed ball bearing permanently lubricated and directly drive the outdoor fan slinger ring CONTROLS Covered controls shall be accessible in a compartment atleast 772 wide with the controls no deeper than 1 74 in the opening to facilitate easy operation of the unit The unit controls shall feature a soft blue LED readout that can display either room temperature or setpoint temperature The unit shall re ceive input from the digital control panel through push buttons labeled Cool Heat High Fan Med Fan Low Fan A W and Power When Off the unit may be put directly into cooling or heating mode by pressing the Cool or Heat button The unit must have the following energy saving and convenience features built in Quiet start stop fan delay Fan cycle control for cooling and heating independently Room f
24. frosting and thawing of the evaporator is another indication of a low charge however frosting and thawing can also be caused by insufficient air over the evaporator Checks for an undercharged system can be made at the compressor If the compressor seems quieter than normal it is an indication of a low refrigerant charge A check of the amperage drawn by the compressor motor should show a lower reading Check the Unit Specification 31 32 After the unit has run 10 to 15 minutes check the gauge pressures Gauges connected to system with an undercharge will have low head pressures and substantially low suction pressures Reversing Compressor P Valve Accumulator n Head Pressure Indoor Coil uen Lower Compressor Running Quieter than Normal Amps Lower Undercharged System Overcharged Refrigerant Systems Compressor amps will be near normal or higher Noncondensables can also cause these symptoms To confirm remove some of the charge if conditions improve system may be overcharged If conditions don t improve Noncondensables are indicated Wheneveranoverchargedsystemisindicated alwaysmake sure that the problem is not caused by air flow problems Restricted Refrigerant System Troubleshooting a restricted refrigerant system can be difficult The following procedures are the more common problems and solutions to these problems There are two types of ref
25. inputs are only visible and accessible with the front cover removed from the PTAC Dip Switch Setting 1 Emergency Heat Override Switch 1 4 Electronic Temperature Limiting Switches 5 6 In the unlikely event of a compressor failure a heat pump unit may The digital control is set from the factory to allow a temperature be switched to operate in only the electric heat mode until repairs range between 61 F and 86 F in both heating and cooling can be made Moving Dip Switch 1 to ON mode Dip Switches 5 6 can be used to set high and low limits for either heating both cooling both or both 2 Wall Thermostat Switch 2 In order to enable the wall thermostat move Dip Switch to ON From the factory switches in the down OFF position The chart below shows the available electronic limiting ranges 3 Fan Cycle Control Switch 3 4 All PTACs are shipped from the factory with Dip Switch 3 4 in the OFF position In this position the cooling fan cycle will run continuously providing air circulation during the warm months owner s preference by moving Dip Switch 7 to OFF This feature cycle IS ii E E js E m nd will monitor the indoor room conditions and in the event that the SUUM MOES Dy PIP SWIC S room falls below 40 F the unit will cycle on high fan with the position electric heater This occurs regardless of mode 5 RoomFreeze Protection Switch 7 Units are shipped from the factory w
26. is now controlled by the wall thermostat only m If the accessory escutcheon kit PDXRTA is to be used install it over the existing control panel The unit mounted controls no longer control the unit To restore the unit mounted controls move dip switch 2 to the down or OFF position Thermostat Connections R 24 Power from Unit Y Callfor Cooling W Call for Heating O Reversing Valve Energized in cooling mode PDH Models Only GL Call for Low Fan GH Call for High Fan C Common Ground If only G terminal is present on thermostat connect to GL for low speed fan or to GH for high speed fan operation Control board with optional PDXRT escutcheon kit installed CJ Controlled by Wall Thermostat Use well thermostat to operate unit FRP029 Desk Control Terminals The Friedrich PD model PTAC has built in provisions for connection to an external switch to control power to the unit The switch can be a central desk control system or even a normally open door switch For desk control operation connect one side of the switch to the D1 terminal and the other to the D2 terminal Whenever the switch closes the unit operation will stop NOTE The desk control system and switches must be field supplied Energy Management Sometimes known as Front Desk Control an input is provided so that the unit can be manually disabled from a remote location If the unit detects 24Vac on this input
27. it will automatically turn itself off If no voltage is detected on the input the unit will run normally NOTE It is the installer s responsibility to ensure that all control wiring connections are made in accordance with the installation instructions Improper connection of the thermostat control wiring and or tampering with the unit s internal wiring can void the equipment warranty Other manufacturer s PTACs and even older Friedrich models may have different control wire connections Questions concerning proper connections to the unit should be directed to Friedrich WARNING Electrical Shock Hazard Turn off electrical power before service or installation ALL electrical connections and wiring MUST be installed by a qualified electrician and conform to the National Code and all local codes which have jurisdiction Improper connection of the thermostat control wiring and or tampering with the units internal wiring may result in property damage personal injury or death 19 FRIEDRICH DIGITAL CONTROL FEATURES The new Friedrich digital PTAC has state of the art features to improve guest comfort indoor air quality and conserve energy Through the use of specifically designed control software for the PTAC industry Friedrich has accomplished what other Manufacturers have only attempted a quiet dependable affordable and easy to use PTAC Below is a list of standard features on every Friedrich PTAC and their benefit to t
28. liquid refrigerant The charge for any system is critical When the compressor is noisy suspect an overcharge when you are sure that the air quantity over the evaporator coil is correct Icing of the evaporator will not be encountered because the refrigerant will boil later if at all Gauges connected to system will usually have higher head pressure depending upon amount of over charge Suction pressure should be slightly higher Suction Pressure Noticeably High 2 Pressure Compressor Slightly Slugged with Refrigerant Overcharged System With a complete restriction the current drawn may be considerably less than normal as the compressor is running in a deep vacuum no load Much of the area of the condenser will be relatively cool since most or all of the liquid refrigerant will be stored there The following conditions are based primarily on a system in the cooling mode Accumulator Head Pressure Suction Pressure Lower Deep Vacuum Compressor Outdoor Coll Gauges will not equalize with unit shut off Completely Restricted System Reversing Valve Accumulator Head Suction Pressure Lower x Indoor Coil Outdoor Coil Gauges may equalize very slowly Partially Restricted System HERMETIC COMPONENTS CHECK A WARNING BURN HAZARD Proper safety procedures must be followed and proper protective clothing must be worn when working with a torch pene
29. plugged well head and lines are correct If correct replace receiving head or remote controller Remote controller has malfunction Lower the temperature of the thermostat The thermostathasn t beerradiusted well or increase the temperature when heating Too much dust accumulated on the filter Clean the filter Clean the dust accumulated on the surface of the heat Heat exchanger is blocked exchanger Fan speed is set too slow Set the fan speed at high or medium fan speed can run but it can t cooling or heating 1 Wrong wire connection 2 whether the capacitor damaged or not 3 the motor has malfunction Connect the wire correctly or replace those parts which has malfunction The fan can t run or the fan speed is too slow 24 cooling or heating Call for fan motor but fan motor will not come on Compressor isn t running controller is with output Refrigerant is insufficient or leaking Refrigeration system is blocked Too much refrigerant The efficiency of the compressor is low Condenser can t discharge smoothly At the time of heating the electric heater can t run Outdoor temperature is too high Whether the cooling heating load is suitable The air tightness in room is not good People come in and go out frequently There are heating devices in the room when is cooling Supply voltage is unstable Wrong wire conn
30. proper connection Double check that each wire is connected to the proper terminal 12 Turn on power to the system at the main service panel 13 Configure thermostat to match the type of system you have 14 Replace cover on thermostat by snapping it in place 15 Test thermostat operation as described in Testing the Thermostat Wiring Diagrams Heat Cool Systems Heat pump with electric backup Transformer Transformer R T In R T 120 120 ra 24 VAC Jael VAC gt Low Fan GL R Low Fan GL R M M High Fan GH 9 High Fan GH 9 O B 5 Reversing Valve O B Compressor Y A Heat T Auxiliary Heat T Terminal Designator Descriptions R 24 VAC hot C 24 VAC common O B Configurable O Cool active reversing valve Freidrich PTHP B Heat active reversing valve Freidrich Vert I Pak Kuhl HP Y 1st stage cool 1st stage heat for heat pumps W 1st stage heat for non heat pump systems auxiliary heat for HP systems GL Low fan GH High fan RT6 Output Chart Configuration 1 Cool 1 Heat 2 Heat Heat Cool and single stage HP models ELC YG PTHP models only HP O Config Y G O Y G Y W The RT6 thermostat is configurable for different systems The configuration directly affects the output
31. protective clothing and gloves etc Failure to do so could result in serious injury 3 Switch the unit to the heating mode and observe the gauge readings after a few minutes running time If the system pressure is lower than normal the heating capillary is restricted 4 Ifthe operating pressures are lower than normal in both the heating and cooling mode the cooling capillary is restricted the port liquid line to the outdoor coil The flow path of the refrigerant is then through the filter drier and heating capillary to the outdoor coil Failure of the slide in the check valve to seat properly in either mode of operation will cause flooding of the cooling coil This is due to the refrigerant bypassing the heating or cooling capillary tube and entering the liquid line COOLING MODE In the cooling mode of operation liquid refrigerant from condenser liquid line enters the cooling check valve forcing the heating check valve shut The liquid refrigerant is directed into the liquid dryer after which the refrigerant is metered through cooling capillary tubes to evaporator Note liquid refrigerant will also be directed through the heating capillary tubes in a continuous loop during the cooling mode HEATING MODE In the heating mode of operation liquid refrigerant from the indoor coil enters the heating check valve forcing the cooling check valve shut The liquid refrigerant is directed into the liquid dryer after whic
32. those parts which has malfunction Replace the controller Replace capacitor connect the wire correctly according to the electric circuit diagram Check with a multimeter if the enclosed motor windings of compressor is with short or broken circuit or earthing If so it is needed to replace it with the same type and specifications Knock the compressor housing with a rubber bar or with a hammer padding with a wood the compressor might be shocked and run If not change the compressor 25 Adjust the quantity of the refrigerant Refrigerant is insufficient or super abundance Capillary is blocked and the suction Protector is temperature is rising activated due to overheating of The compressor can run smoothly or is stuck the compressor The air discharge valve is damaged Use the multimeter to check whether the contact point of the Protector has malfunction compressor is conducted at the timer of non subheating If it Replace capillary Replace the compressor can t be conducted please replace the protector Supply voltage is abnormal Check the reason improve the power supply condition and add the regulated power supply The radiating for evaporator and condensor is Compressor not good Poor air ventilation Get rid of the dust on the evaporator and condensor remove the obstacles at the air outlet is ON OFF frequently The air conditioner capability does not match the area of the room i e so called
33. 0 22 17 140 61 3 579 100 1 009 16 115 000 23 16 390 62 3 454 101 0 980 15 108 700 24 15 680 63 3 333 102 0 952 14 102 900 25 15 000 64 3 217 103 0 925 13 97 400 26 14 360 65 3 105 104 0 898 12 92 220 27 13 740 66 2 998 105 0 873 11 87 350 28 13 160 67 2 896 106 0 848 10 82 750 29 12 600 68 2 97 107 0 825 9 78 430 30 12 070 69 2 02 108 0 802 8 74 350 31 11 570 70 2 611 109 0 779 7 70 500 32 11 090 71 2 523 110 0 758 6 66 880 33 10 630 72 2 439 111 0 737 5 63 460 34 10 200 73 2 358 112 0 717 4 60 230 35 9 779 74 2 280 113 0 697 3 57 180 36 9 382 75 2 206 114 0 678 2 54 310 37 9 003 76 2 133 115 0 660 1 51 590 38 8 642 77 2 064 116 0 642 0 49 020 39 8 297 78 1 997 117 0 625 1 46 600 40 7 967 79 1 933 118 0 608 2 44 310 41 7 653 80 1 871 119 0 592 3 42 140 42 7 352 81 1 811 120 0 577 4 40 090 43 7 065 82 1 754 121 0 561 5 38 150 44 6 791 83 1 699 122 0 547 6 36 320 45 6 529 84 1 645 123 0 532 7 34 580 46 6 278 85 1 594 124 0 519 8 32 940 47 6 038 86 1 544 125 0 505 9 31 380 48 5 809 87 1 497 126 0 492 10 29 900 49 5 589 88 1 451 127 0 480 11 28 510 50 5 379 89 1 408 128 0 467 12 27 180 51 5 197 90 1 363 129 0 456 13 25 920 52 4 986 91 1 322 130 0 444 14 24 730 53 4 802 92 1 282 131 0 433 15 23 600 54 4 625 93 1 244 132 0 422 16 22 530 55 4 456 94 1 207 133 0 412 17 21 510 56 4 294 95 1 171 134 0 401 18 20 540 5 4 139 96 1 136 135 0 391 19 19 630 58 3 990 97 1 103 136 0 382 47 48 Resis
34. 0 227 2450 718 545 5464 800 328 2450 800 431 1143 TECHNICAL SUPPORT CONTACT INFORMATION FRIEDRICH FRIEDRICH AIR CONDITIONING CO 10001 Reunion Place Ste 500 San Antonio TX 78216 210 546 0500 877 599 5665 261 FAX 210 546 0630 Email tac friedrich com www friedrich com Printed in the U S A Table of Contents Important Safety Information 2 4 PREPARED RAS 4 General Product Features 5 HVAC Engineering Specifications 6 Component identification 7 ACCOSSOTI6S i i ed t REC rrt 8 9 Unit Identification u u u u DQ tein 10 Chassis Specifications 11 Cooling and Heating Performance 12 13 Electric Heat citet 14 Electrical Rating Tables 15 Power Cord Information sees 15 17 Remote Wall Thermostat Low Voltage Wire Connections sssssee 18 19 Digital Control Features u 20 Digital Control Operation 21 Digital Control User Input Configuration 22 Digital Control Diagnostics
35. 137 8700137 Fresh Air Door 8700121 8700121 Fresh Air Door Cable 8700133 8700133 Fresh Air Door Filter 8700139 8700139 DID Fresh Air Door Lever 8700148 8700148 Front Panel Assy Complete 8700144 8700144 Front Panel clip 8700128 8700128 DID 8700074 8700075 Heater Wiring Block Board 8700126 8700126 Inner Wall ass 8700115 8700115 8700120 68700120 J 8700117 _ 68700117 DID 8700105 _ 168700105 Terminal Board 24vac 8700156 8700156 DID Motor Bracket Indoor 8700123 8700123 Shroud Brace 8700119 8700119 Relay Board 8700103 8700104 DID Thermal baffle 8700132 8700132 Cover Plate Sub Ass 8700116 8700116 8700112 8700111 ring ring perature DID Cross Flow Fan Evaporator 8700136 8700136 T T 8700149 8700154 Wi T DID Cross flow fan support right 8700130 8700130 Lower cover_of Fresh Air Door Lever 8700150 8700150 Terminal 7 position 24VAC 8700155 8700155 8700046 8700046 pe IB IB b I 5 JQ JD JD o9 o9 JH o9 IN 02 PO JN JIB O JO oo 2 O JD O o oo JN Os JB IS r2 O Joo Overload Protector 8700052 Tube Thermistor 8700153 8700051 8700153 ID ID DID ID ID ID DID DID ID
36. 24 8700125 8700004 8700102 8700135 8700145 8700158 8700129 8700130 8700136 8700131 8700143 8700122 8700151 8700034 8700013 8700141 8700088 8700071 8700137 8700121 8700133 8700139 8700148 8700144 8700128 8700099 8700126 8700115 8700120 8700117 8700150 8700105 8700156 8700123 8700119 8700104 8700132 8700116 8700111 8700149 8700154 8700155 8700046 8700110 8700162 8700153 Part 68700138 68700082 8700152 8700097 8700127 8700147 8700134 8700118 8700107 8700109 8700113 8700084 8700124 8700125 8700047 8700102 8700135 8700145 8700158 8700129 8700130 8700136 8700131 8700143 8700122 8700151 8700036 8700101 8700141 8700078 8700089 8700137 8700121 8700133 8700139 8700148 8700144 8700128 8700098 8700126 8700115 8700120 8700117 8700150 8700105 8700156 8700123 8700119 8700103 8700132 8700116 8700112 8700149 8700154 8700155 8700046 8700110 8700053 8700153 P 68700138 68700083 8700152 8700097 8700127 8700147 8700134 8700118 8700107 8700108 8700109 8700084 8700124 8700125 8700048 8700102 8700135 8700145 8700158 8700129 8700130 8700136 8700131 8700143 8700122 8700151 8700038 8700101 8700141 8700086 8700090 8700137 8700121 8700133 8700139 8700148 8700144 8700128 8700099 8700126 8700115 8700120 8700117 8700150 8700105 8700156 8700123 8700119 8700104 8700132 8700116 8700111 8700149 8700154 8700155 8700046 8700110 8700161 8700153
37. 640 11 38 010 50 7 173 89 1 875 128 0 623 12 36 240 51 6 905 90 1 818 129 0 607 13 34 570 52 6 648 91 1 736 130 0 592 14 32 980 53 6 403 92 1 710 131 0 577 15 31 470 54 6 167 93 1 658 132 0 563 16 30 040 55 5 942 94 1 609 133 0 549 17 28 680 56 5 726 95 1 561 134 0 535 18 27 390 57 5 519 96 1 515 135 0 521 19 26 170 58 5 320 97 1 470 136 0 509 g FRIEDRICH Friedrich Air Conditioning Company 10001 Reunion Place Suite 500 San Antonio TX 78216 800 541 6645 www friedrich com PD SERIES PACKAGED TERMINAL AIR CONDITIONERS LIMITED WARRANTY SAVE THIS CERTIFICATE It gives you specific rights You may also have other rights which may vary from state to state and province to province In the event that your unit needs servicing contact your nearest authorized service center If you do not know the nearest service center ask the company that installed your unit or contact us see address and telephone number above To obtain service and or warranty parts replacement you must notify an authorized FRIEDRICH Air Conditioning Co service center distributor dealer or contractor of any defect within the applicable warranty period When requesting service please have the model and serial number from your unit readily available Unless specified otherwise herein the following applies FRIEDRICH PACKAGED TERMINAL AIR CONDITIONERS AND HEAT PUMPS LIMITED WARRANTY FIRST YEAR Twelve 12 months from the dat
38. 700111 68700112 68700111 2_ 68700153 68700153 68700153 68700153 68700153 68700153 68700153 68700153 68700149 68700149 68700149 68700149 68700149 68700149 68700149 68700149 68700154 68700154 68700154 68700154 68700154 68700154 68700154 68700154 4 4 1 168700155 68700155 68700155 68700155 68700155 68700155 68700155 68700155 n a 68700094 68700063 68700045 68700076 53 Addemdum Sheet PTAC Display Configuration Instructions amp NE amp Fan Speed To Enter Change amp Exit the Display Configuration Mode Press Power button to turn unit on Press Low Fan Speed button and Y Temperature button simultaneously for 3 seconds to enter Display Configuration Mode Press the Low Fan Speed button one time to view the four Display Configuration Options Press the x Or Y Temperature buttons to scroll throueh the four Display Configuration options Press the Cool button one time to save and exit changes Display Configuration Mode Options 15 option in Display configuration mode Fahrenheit Celsius display option Change between the Fahrenheit Celsius temperatures setting using the Temperature Up Down buttons until either F C is displayed Fahrenheitis the default setting c Celsius qi Fahrenheit 2 4 and 3 option Indoor air temperature offset for Cooling mode and
39. C ompressor Gasket way Reversing Valve Ass way Reversing Valve Ass 12 9 N a 5 7 9 9 29 F 56 56 EN 1 1 EN EW EN EW EH 1 EN EN EG 68700158 68700158 68700158 68700158 68700158 68700158 68700158 68700158 EN EW ER 1 EN EW EW EW 1 a 1 1 1 EG 1 2 EN EN EN EN Solenoid Col eee 68700092 68700093 68700092 68700093 68700092 68700093 68700092 EN EN EN 2 PDH15R5SF Friedrich 68700138 Friedrich 68700138 Friedrich 68700138 Friedrich 68700138 Friedrich 68700138 Friedrich 68700138 Friedrich 68700138 68700121 68700133 68700139 68700148 68700144 2 68700128 68700074 68700075 68700098 68700099 68700098 68700099 68700098 68700099 68700126 68700115 68700120 68700117 68700150 68700106 68700104 68700123 2 68700156 68700156 68700156 68700156 68700156 68700156 68700156 68700156 68700132 68700132 68700132 68700132 68700132 68700132 68700132 68700132 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 68700116 68700116 68700116 68700116 68700116 68700116 68700116 68700116 EN 1 168700112 68700111 68700112 68700111 68700112 68
40. D The use of nitrogen requires a pressure regulator Follow all safety procedures and wear protective safety clothing etc Failure to follow proper safety procedures result in serious injury or death 8 Pressurize with a combination of R 410A and nitrogen and leak test all connections with leak detector capable of detecting HFC Hydrofluorocarbon refrigerant Recover refrigerant nitrogen mixture and repair any leaks found Repeat Step 8 to insure no more leaks are present 9 Evacuate the system with a good vacuum pump capable of a final vacuum of 200 microns or less The system should be evacuated through both liquid line and suction line gauge ports While the unit is being evacuated seal all openings on the defective compressor CAUTION FREEZE HAZARD Proper safety procedures must be followed and proper protective clothing must be worn when working with liquid refrigerant Failure to follow these procedures could result in minor to moderate injury 10 Recharge the system with the correct amount of refrigerant The proper refrigerant charge will be found on the unit rating plate The use of an accurate measuring device such as a charging cylinder electronic scales or similar device is necessary NOTICE NEVER under any circumstances charge a rotary compressor through the LOW side Doing so would cause permanent damage to the new compressor SPECIAL PROCEDURE IN THE CASE OF MOTOR COMPRESSOR BURNO
41. Failure to follow these procedures could result in moderate or serious injury METERING DEVICE Capillary Tube Systems All units are equipped with capillary tube metering devices Checking for restricted capillary tubes 1 Connect pressure gauges to unit 2 Startthe unit in the cooling mode If after a few minutes of operation the pressures are normal the check valve and the cooling capillary are not restricted CHECK VALVE A unique two way check valve is used on the reverse cycle heat pumps It is pressure operated and used to direct the flow of refrigerant through a single filter drier and to the proper capillary tube during either the heating or cooling cycle One way Check Valve Heat Pump Models X 1 e X NOTE The slide check inside the valve is made of teflon Should it become necessary to replace the check valve place a wet cloth around the valve to prevent overheating during the brazing operation CHECK VALVE OPERATION In the cooling mode of operation high pressure liquid enters the check valve forcing the slide to close the opposite port liquid line to the indoor coil Refer to refrigerant flow chart This directs the refrigerant through the filter drier and cooling capillary tube to the indoor coil In the heating mode of operation high pressure refrigerant enters the check valve from the opposite direction closing A WARNING CUT SEVER HAZARD Be careful with the sharp edges and corners Wear
42. Install Thermostat ELECTRICAL SHOCK HAZARD Turn off power at the main service panel by removing the fuse or switching the appropriate circuit breaker to the OFF position before removing the existing thermostat IMPORTANT Thermostat installation must conform to local and national building and electrical codes and ordinances Note Mount the thermostat about five feet above the floor Do not mount the thermostat an outside wall in direct sunlight behind a door or in an area affected by a vent or duct Turn off power to the heating and cooling system by removing the fuse or switching the appropriate circuit breaker off To remove cover pull gently at the seam at the top e Put thermostat base against the wall where you plan to mount it Be sure wires will feed through the wire opening in the base of the thermostat Mark the placement of the mounting holes Set thermostat base and cover away from working area Using 3 16 drill bit drill holes in the places you have marked for mounting Use a hammer to tap supplied anchors in mounting holes m Align thermostat base with mounting holes and feed the control wires through slit in thermal intrusion barrier and into wire opening Use supplied screws to mount thermostat base to wall ar 0 Insert stripped labeled wires in matching wire terminals CAUTION Be sure exposed portion of wires does not touch other wires 11 Gently tug wire to be sure of
43. NLY All Friedrich 230 208V PTAC units are shipped from the factory with a Leakage Current Detection Interrupter LCDI equipped power cord The LCDI device meets the UL and NEC requirements for cord connected air conditioners effective August 2004 Typical LCDI Devices e To test your power supply cord WARNING 1 Plug power supply cord into a grounded 3 prong outlet 1 PRESS RESET BUTTON x dg iod TN R DO NOT USE IF ABOVE TEST POP UP 3 Press TEST listen for click Reset button trips and pops PRESS TEST BUTTON out IT IS WORKING PROPERLY DO NOT USE IF ABOVE TEST wee Se 4 Press and release RESET listen for click Reset button latches and remains in The power supply cord is ready for operation NOTE The LCDI device is not intended to be used as a switch 15 20A LCDI Device 30A LCDI Device Once plugged in the unit will operate normally without the need to reset the LCDI device If the LCDI device trips and Use ONLY wiring size recommended for single outlet branch circuit 15 16 S x s Pe 3 ees 1 1 1 1 1 1 1 1 1 1 1 1 1 Electrical Wiring for 265 Volt To install the line voltage power leads and conduit to chassis follow the instructions below Models PXCJA Co
44. S S TS TS S 5 s RATING POINT ARI 310 380 P gt Cooling amp Heating Performance PDE 265V Extended Cooling Performance OUTDOOR DRY BULB TEMP DEGREES F AT 40 R H INDOOR WET BULB TEMP DEGREES F AT 80 F D B 5 s s ooo ws so eo 9 e oo ros 2 2 ws 2 2 2 Jar 21 22 26 ome 24 2s 29 26 0 70 sm oz ose o em om ws ww om om ew oe sm ow es o5 oor os om ws ws om om om erus 10572 12504 12072 eee 1212 12000 1 we warts oa se ee no nao no om eo o6 vom sm 0 ow es os oor os om ow os ws om om eru 1705 1o00 18040 16140 15000 1378 ss nes ss aoo ues 4s s ss sa sa 55 so 5 e oo os 7 sa oar om o sr om om we o2 es om sw RATING POINT ARI 310 380 OUTDOOR DRY BULB TEMP DEGREES F AT 40 INDOOR WET BULB TEMP DEGREES F AT 80 F D B z e z JN c z z Te z z wans 52 s se s ws s eo om es ms ms 7
45. Service Manual FRIEDRICH 2011 2013 PTAC R410A Models Packaged Terminal Air Conditioners Packaged Terminal Heat Pumps PD ServMan E 4 13 94991400_02 CUSTOMER SATISFACTION and QUALITY ASSURANCE Friedrich is a conscientious manufacturer concerned about customer satisfaction product quality and controlling warranty costs As an Authorized Service Provider you play a vital role in these areas By adhering to the policies and procedures you provide us with vital information on each warranty repair you complete This information is used to identify product failure trends initiate corrective action and improve product quality thereby further reducing warranty expenses while increasing customer satisfaction levels CHARGES TO CUSTOMER The customer end user is not to be charged for any warranty repairs to correct defects in materials or workmanship in accordance with the specific warranty provisions outlined in the product s warranty certificate FRIEDRICH AUTHORIZED PARTS DEPOTS AAA Refrigeration Service The Gabbert Company Reeve Air Conditioning Inc 1322 24th Street Suite B 6868 Ardmore 2501 South Park Road Kenner Louisiana 70062 Houston Texas 77054 Hallandale Florida 33009 504 464 7444 713 747 4110 954 962 0252 877 813 7444 800 458 4110 800 962 3383 Alamo Service Company Johnstone Supply of Woodside 1450 North Flores Street 27 01 Brooklyn Queens Expway San Antonio Texas 78212 Woodside New York 11377 21
46. UT A WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation Failure to do so may result in personal injury or death A WARNING HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure Proper safety procedures must be followed and proper protective clothing must be worn when working with refrigerants Failure to follow these procedures could result in serious injury or death AWARNING EXPLOSION HAZARD The use of nitrogen requires a pressure regulator Follow all safety procedures and wear protective safety clothing etc Failure to follow proper safety procedures result in serious injury or death 1 Recover all refrigerant and oil from the system 2 Remove compressor capillary tube and filter drier from the system 3 Flush evaporator condenser and all connecting tubing with dry nitrogen or equivalent Use approved flushing agent to remove all contamination from system Inspect suction and discharge line for carbon deposits Remove and clean if necessary Ensure all acid is neutralized 4 Reassemble the system including new drier strainer and capillary tube 5 Proceed with step 8 10 on previous page ROUTINE MAINTENANCE ELECTRICAL SHOCK HAZARD Turn off electrical power before service or installation All eletrical connections and wiring MUST be installed by a qualified electrician and conform to the National Code an
47. adapter The extension can be cut to length by the installer Maximum allowable straight extension is 15 feet Accessories New Construction Accessories CONDUIT KIT WITH JUNCTION BOX Hard wire conduit kit with junction box for 208 230V and 265V units subbase not required Kit includes a means of quick disconnect for easy removal of the chassis Required for 265V installations REPLACEMENT FILTER PACK These are original equipment return air filters They are reusable and can be cleaned by vacuuming washing or blowing out and are sold in convenient ten packs Two filters per chassis PD Series Digital PTAC Series System E Cooling with or UNIT IDENTIFICATION Model Number Code PDHO7 SF A Engineering Digit without electric heat H Heat Pump with Auxiliary Heat Nominal Cooling Capacity 07 7000 BTUh 09 9000 BTUh 12 12000 BTUh 15 15000 BTUh SERIAL NUMBER LJ 2009 AK 2010 AA 2011 AB 2012 AC 2013 AD 2014 AE 2015 AF 2016 AG 2017 AH 2018 AJ 2019 Options S Standard Nominal Heater Size 230V or 265V 0 No Heater 2 2KW 3 3KW 5 5 0KW Voltage K 208 230V 1Ph 60Hz R 265V 1Ph 60Hz PTAC Serial Number Identification Guide 00001 YEAR MANUFACTURED PRODUCTION RUN NUMBER PRODUCT LINE MONTH MANUFACTURED Jan Feb C Mar D Apr May F Jun G Jul H Aug J
48. ately identify the unit you are servicing so you can be certain of a proper diagnosis and repair See Unit Identification General Product Features DIAMONBLUE TECHNOLOGY DIGITALDEFROST THERMOSTAT INSTANT HEAT HEAT PUMP MODE EVEN HEAT MONITORING SEPARATE HEAT COOL FAN CYCLE CONTROL EMERGENCY HEAT OVERRIDE DESK CONTROL READY INDOOR COIL FROST SENSOR ULTRA QUIET AIRSYSTEM HIGH EFFICIENCY DUAL MOTOR ROTARY COMPRESSOR STAINLESS STEEL ENDPLATES TOP MOUNTED ANTIMICROBIAL AIR FILTERS FILTERED FRESH AIR INTAKE R 410A REFRIGERANT Diamonblue seacoast protection protects the outdoor coil from harsh environments Comes standard on all models The new Friedrich PTAC uses a digital thermostat to accurately monitor the outdoor coil conditions to al low the heat pump to run whenever conditions are correct Running the PTAC in heat pump mode saves energy and reduces operating costs The digital thermostat allows maximization of heat pump run time Heat pump models will automatically run the electric heater to quickly bring the room up to temperature when initially energized then return to heat pump mode This ensures that the room is brought up to temperature quickly without the usual delay associated with heat pump units The digital control monitors indoor conditions to ensure that the room temperature is within five degrees of the setpoint If necessary the unit will cycle the electric heat to main
49. ath PROPERTY DAMAGE HAZARDS FIRE DAMAGE HAZARDS e Read the Installation Operation Manual for this air conditioning unit prior to operating e Use air conditioner on a single dedicated circuit within the specified amperage rating e Connect to a properly grounded outlet only e Donotremove ground prong of plug e Donotcut or modify the power supply cord e Donotuse extension cords with the unit e Failure to follow these instructions can result in fire and minor to serious property damage WATER DAMAGE HAZARDS e Improper installation maintenance or servicing of the air conditioner unit or not following the above Safety Warnings can result in water damage to personal items or property e Insure that the unit has a sufficient pitch to the outside to allow water to drain from the unit e Donotdrill holes in the bottom of the drain pan or the underside of the unit e Failure to follow these instructions can result in result in damage to the unit and or minor to serious property damage INTRODUCTION This service manual is designed to be used in conjunction with the installation manuals provided with each unit This service manual was written to assist the professional HVAC service technician to quickly and accurately diagnose and repair any malfunctions of this product This manual therefore will deal with all subjects in a general nature i e All text will pertain to all models IMPORTANT It will be necessary for you to accur
50. d all local codes which have jurisdiction Failure to do so can result in property damage personal injury and or death To ensure proper unit operation and life expectancy the following maintenance procedures should be performed on a regular basis 1 Air Filter To ensure proper unit operation the air filters should be cleaned at least monthly and more frequently if conditions warrant The unit must be turned off before the filters are cleaned To remove the air filters grasp the top of the filter and lift out of the front cabinet Reverse the procedure to reinstall the filters Clean the filters with a mild detergent in warm water and allow them to dry thoroughly before reinstalling 2 Coils amp Chassis NOTE Do not use a caustic coil cleaning agent on coils or base pan Use a biodegradable cleaning agent and degreaser The use of harsh cleaning materials may lead to deterioration of the aluminum fins or the coil end plates The indoor coil and outdoor coils and base pan should be inspected periodically annually or semi annually and cleaned of all debris lint dirt leaves paper etc as necessary Under extreme conditions more frequent cleaning may be required Clean the coils and base pan with a soft brush and compressed air or vacuum A pressure washer may also be used however you must be careful not to bend the aluminum fin pack Use a sweeping up and down motion in the direction of the vertical aluminum fi
51. d for 10 seconds before returning to AA Ambient Air mode Note In Fan only mode Ambient room temp is always displayed 7 FRIEDRICH FRIEDRICH AIR CONDITIONING CO 10001 Reunion Place Ste 500 San Antonio TX 78216 P 210 546 0500 F 210 546 0731 www friedrich com Printed in the U S A PD ServMan E 4 13
52. d to change this certificate or to create for us any other obligation or liability in connection with this unit Any implied warranties shall last for one year after the original purchase date Some states and provinces do not allow limitations on how long an implied warranty or condition lasts so the above limitations or exclusions may not apply to you The provisions of this warranty are in addition to and not a modification of or subtraction from the statutory warranties and other rights and remedies provided by law Performance of Friedrich s Warranty obligation is limited to one of the following methods 1 Repair of the unit 2 A refund to the customer for the prorated value of the unit based upon the remaining warranty period of the unit 3 Providing a replacement unit of equal value The method of fulfillment of the warranty obligation is at the sole discretion of Friedrich Air Conditioning In case of any questions regarding the provisions of this warranty the English version will govern 11 10 49 2011 PTAC EXPLODED VIEW 2011 PTAC PARTS LIST PDE MODELS Nn en en x N n x m a n e x N m a PDEO7K3S Ht _ Description 1 Air Filter Pai 2 68700138 68700138 Air Guide 1 68700055 X 68700056 8700152 P 68700138 68700058 8700152 8700096 8700127 8700147 8700134 8700118 8700100 8700113 8700108 8700016 87001
53. e Solenoid Valve YES Is the Solenoid Coil Good Replace the Solenoid Coil NO YES Is the Selector Switch Set for Heat Reversing Valve Stuck Replace the Reversing Valve REMOTE WALL THERMOSTAT WIRING DIAGRAM COOL WITH ELECTRIC HEAT LEGEND FOR T STAT WIRING HARNESS 24VAC Power FromUnt Reversing Valve Energized in cooling mode Call for Low Fan Call for High Fan RT6 Two Speeds Fan T Stat Field Provided Field Wiring Electronic THERMOSTAT CONNECTIONS Control ee Board I Er s NM a 1 1 1 1 1 1 4a rq 1 1 1 MN 5 I bog j x I stc Ez lr I I I I I RT6 Disk control or Auxillary fan 42 REMOTE WALL THERMOSTAT WIRING DIAGRAM HEAT PUMP WITH ELECTRIC HEAT LEGEND FOR T STAT WIRING HARNESS DR 24VAC Power FromUnt Reversing Valve Energized in cooling mode RT6 Two Speeds Fan T Stat Field Provided Field Wiring Electronic THERMOSTAT CONNECTIONS Control bebe Board I eels Doe 2 I I I tok gs 2 I I I I I I ae 5 E bog B5 I aks aoe lr 1 I I I RT6 Disk control or Auxillary fan 43 44 5VDC 5VDC 5VDC Thermistors WIRING DIAGRAM Indoor Air Outdoor Logic Board Display Control Board gt lt p1eog
54. e meter The compressor under these conditions will not start and will usually kick out on overload within a few seconds since the pressures in the system will not have had time to equalize Voltage should be at or above minimum voltage of 197 VAC as specified on the rating plate If less than minimum check for cause of inadequate power supply i e incorrect wire size loose electrical connections etc Amperage L R A Test The running amperage of the compressor is the most impor tant of these readings Arunning amperage higher than that indicated in the performance data indicates that a problem exists mechanically or electrically Single Phase Running and L R A Test NOTE Consult the specification and performance section for running amperage The L R A can also be found on the rating plate Select the proper amperage scale and clamp the meter probe around the wire to the C terminal of the compressor Turn on the unit and read the running amperage on the me ter If the compressor does not start the reading will indicate the locked rotor amperage L R A Overloads The compressor is equipped with an external overload which senses both motor amperage and winding temperature High motor temperature or amperage heats the overload causing it to open breaking the common circuit within the compressor Heat generated within the compressor shell usually due to recycling of the motor is slow to dissipate It may take an
55. e normal operating pressures before the reversing valve can shift WARNING HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure Proper safety procedures must be followed and proper protective clothing must be worn when working with refrigerants Failure to follow these procedures could result in serious injury or death Check the operation of the valve by starting the system and switching the operation from Cooling to Heating and then back to Cooling Do not hammer on valve Occasionally the reversing valve may stick in the heating or cooling position or in the mid position When sluggish or stuck in the mid position part of the discharge gas from the compressor is directed back to the suction side resulting in excessively high suction pressure Should the valve fail to shift from coooling to heating block the air flow through the outdoor coil and allow the discharge pressure to build in the system Then switch the system from heating to cooling If the valve is stuck in the heating position block the air flow through the indoor coil and allow discharge pressure to build in the system Then switch the system from heating to cooling Should the valve fail to shift in either position after increasing the discharge pressure replace the valve Dented or damaged valve body or capillary tubes can prevent the main slide in the valve body from shifting If you
56. e of installation Any part found to be defective in the material or workmanship will be repaired or replaced free of charge by our authorized service center during the normal working hours and LIMITED WARRANTY SECOND THROUGH FIFTH YEAR Sixty 60 months from the date of installation ON THE SEALED REFRIGERATION SYSTEM Any part of the sealed refrigeration system that is defective in material or workmanship will be repaired or replaced free of charge excluding freight charges by our authorized service center during normal working hours The sealed refrigeration system consists of the compressor metering device evaporator condenser reversing valve check valve and the interconnecting tubing These warranties apply only while the unit remains at the original site and only to units installed inside the continental United States Alaska Hawaii Puerto Rico Mexico and Canada The warranty applies only if the unit is installed and operated in accordance with the printed instructions and in compliance with applicable local installation and building codes and good trade practices For international warranty information contact the Friedrich Air Conditioning Company International Division Any defective part to be replaced must be made available to FRIEDRICH in exchange for the replacement part Reasonable proof must be presented to establish the date of install otherwise the beginning date of this certificate will be considered to be our shipment da
57. e refrigerant must be totally condensed changed to a Liquid before leaving the condenser coil I Suction Line Evaporator Coil Metering Device 22 Refrigerant Strainer The refrigerant leaves the condenser Coil through the liquid line as a warm high pressure liquid It next will pass through the refrigerant drier if so equipped It is the function of the driertotrap any moisture presentin the system contaminants and large particulate matter The liquid refrigerant next enters the metering device The metering device is a capillary tube The purpose of the metering device is to meter i e control or measure the quantity of refrigerant entering the evaporator coil In the case of the capillary tube this is accomplished by design through size and length of device and the pressure difference present across the device Since the evaporator coil is under a lower pressure due to the suction created by the compressor than the liquid line the liquid refrigerant leaves the metering device entering the evaporator coil As it enters the evaporator coil the larger area and lower pressure allows the refrigerant to expand and lower its temperature heat intensity This expansion is often referred to as boiling Since the unit s blower is moving indoor air across the finned surface of the evaporator coil the expanding refrigerant absorbs some of that heat This results in a lo
58. e used to adjust the set point After 5 seconds of inactivity the screen will display the room temperature and the COOL icon will not blink COOL icon will blink Testing the Thermostat Once the thermostat is configured it should be thoroughly tested Heat Test 1 Press SYS left button until heat mode is displayed Adjust the set temperature so it is 5 degrees above the room temperature CAUTION Do not energize the air conditioning system when the outdoor temperature is below 50 2 3 Heat should come on within few seconds 4 Adjust the set temperature 2 degrees below the room temperature and the heat degrees It can result in equipment damage or personal injury a C should turn off There may be a fan delay on your system Note For heat pumps there is four minute delay to protect your compressor after it turns off To bypass the compressor time delay go to OFF mode for 5 seconds h Adjust the set temperature 2 degrees above the room temperature and the should turn off There may be a fan delay on your system Note There is a four minute time delay to protect the compressor after it To bypass the compressor time delay go to OFF mode for 5 seconds 7 2 Cool Test 1 Press SYS left button until cool mode is displayed 2 Adjust set temperature so it is 5 degrees below room temperature 3 A C should come on within a few seconds 4 Fan Tes
59. ection The fan s capacitor is broken The motor winding is of broken circuit or short circuit or the built in temperature limiter device in open circuit due to overheat The controller has malfunction The compressor capacitor is broken wrong wire connection The compressor s motor is burned out The compressor is jammed or blocked Check leakage carry out vacuum pumping after repairing leakage and charge refrigerant according to requirements Check whether the system is blocked by observing the condensation of the evaporator and the pressure value of the high pressure manometer and then take measures to deal with the system Release the redundant refrigerant in system Replace the compressor Get rid of the obstacle 1 the wire is loosened 2 thermal fuse is broken 3 temperature limiter is damaged 4 electric heater is damaged 5 controller is broken correct the wore correctly or replace those parts which has malfunction You can install the rain proof and sun proof board If the cooling air is still insufficient you are suggested to replace the A C Check the preset cooling heating load Keep the air tightness well Try not to use the electic appliances with a large quantity of heat Check the reason and correct it Check the circuit and connect the wire correctly according to the electic circuit diagram Replace fan s capacitor with the same mode and specification Replace
60. es extreme care and proper judgment Follow all safety recommended precautions and protect surrounding areas with fire proof materials Have a fire extinguisher readily available Failure to follow this notice could result in moderate to serious property damage 1 Install Process Tubes Recover refrigerant from sealed system PROPER HANDLING OF RECOVERED REFRIGERANT ACCORDING TO EPA REGULATIONS IS REQUIRED 2 Remove solenoid coil from reversing valve If coil is to be reused protect from heat while changing valve 3 Unbraze all lines from reversing valve 4 Clean all excess braze from all tubing so that they will slip into fittings on new valve 5 Remove solenoid coil from new valve 35 36 6 Protectnew valve body from heat while brazing with plastic heat sink Thermo Trap or wrap valve body with wet rag 7 Fit all lines into new valve and braze lines into new valve A WARNING EXPLOSION HAZARD The use of nitrogen requires a pressure regulator Follow all safety procedures and wear protective safety clothing etc Failure to follow proper safety procedures could result in serious injury or death 8 Pressurize sealed system with a combination of R 22 and nitrogen and check for leaks using a suitable leak detector Recover refrigerant per EPA guidelines 9 Once the sealed system is leak free install solenoid coil on new valve and charge the sealed system by weighing in the proper amount and ty
61. es from the control board 3 Test for continuity between the windings also test to ground 4 If any winding is open or grounded replace the motor CAPACITORS ELECTRIC SHOCK HAZARD Turn off electric power before servicing Discharge capacitor with a 20 000 Ohm 2 Watt resistor before handling Failure to do so may result in personal injury or death Many motor capacitors are internally fused Shorting the terminals will blow the fuse ruining the capacitor A 20 000 ohm 2 watt resistor can be used to discharge capacitors safely Remove wires from capacitor and place resistor across terminals When checking a dual capacitor with a capacitor analyzer or ohmmeter both sides must be tested Capacitor Check with Capacitor Analyzer The capacitor analyzer will show whether the capacitor is open or shorted It will tell whether the capacitor is within its micro farads rating and it will show whether the capacitor is operating at the proper power factor percentage The instrument will automatically discharge the capacitor when the test switch is released Capacitor Connections The starting winding of a motor can be damaged by a shorted and grounded running capacitor This damage usually can be avoided by proper connection of the running capacitor terminals From the supply line on a typical 230 volt circuit a 115 volt potential exists from the R terminal to ground through a possible short in the capacitor How
62. ever from the S or start terminal a much higher potential possibly as high as 400 volts exists because of the counter EMF generated in the start winding Therefore the possibility of capacitor failure is much greater when the identified terminal is connected to the S or start terminal The identified terminal should always be connected to the supply line or R terminal never to the S terminal When connected properly a shorted or grounded running capacitor will result in a direct short to ground from the terminal and will blow the line fuse The motor protector will protect the main winding from excessive temperature Dual Rated Run Capacitor Hook up FAN MOTOR RUN CAPACITOR 27 28 COMPONENTS TESTING Continued HEATER ELEMENTS AND LIMIT SWITCHES SPECIFICATIONS All heat pumps and electric heat models are equipped with a heating element and a limit switch bimetal ther mostat The limit is in series with the element and will interrupt the power at a designed temperature Should the blower motor fail filter become clogged or air flow be restricted etc the high limit switch will open and interrupt the power to the heater before reaching an un safe temperature condition TESTING THE HEATING ELEMENTS AND LIMIT SWITCHES AWARNING ELECTRIC SHOCK HAZARD Disconnect power to the unit before servicing Failure to follow this warning could result in serious injury or death Testing o
63. f the heating elements can be made with an ohmmeter or continuity tester across the terminals after the power wires have been removed Test the limit switch for continuity across its input and output terminals Test below the limit switch s reset temperature DRAIN PAN VALVE During the cooling mode of operation condensate which collects in the drain pan is picked up by the condenser fan blade and sprayed onto the condenser coil This assists in cooling the refrigerant plus evaporating the water During the heating mode of operation it is necessary that water be removed to prevent it from freezing during cold outside temperatures This could cause the condenser fan blade to freeze in the accumulated water and prevent it from turning To provide a means of draining this water a bellows type drain valve is installed over a drain opening in the base pan This valve is temperature sensitive and will open when the outside temperature reaches 40 F The valve will close gradually as the temperature rises above 40 F to fully close at 60 F Bellows Assembly Drain Pan Valve REFRIGERATION SEQUENCE OF OPERATION A good understanding of the basic operation of the refrigeration system is essential for the service technician Without this understanding accurate troubleshooting of refrigeration system problems will be more difficult and time consuming if not in some cases entirely impossible The refrigeration system uses four basic pr
64. g Mode Pressing the Heat button while the unit is in any mode including off will put the unit into heating mode Heat Pump Models PDH When the Heat button is pressed initially the unit will energize the electric resistance heat to quickly bring the room to the set temperature When the desired room temperature falls 1 8 F below the desired set temperature the unit will cycle the compressor on and operate as a heat pump to maintain the room temperature while running more efficiently than resistance heat only models If the room temperature should fall more than 5 F from the set temperature the unit will run the resistance heater The fan operation is dependent on the fan mode selected either continuous or cycling Dip switch 3 controls the fan mode see page 23 for setting When the outdoor coil temperature falls below 30 F for more than 2 min utes the unit will operate the resistance heaters and not the compressor When the outdoor coil temperature reaches 45 F the compressor will be allowed to operate again Models PDE After pressing the Heat button adjust the temperature readout to the desired room temperature and the unit will cycle the resistance heat on and off to maintain a comfortable room The heater will come on anytime that the room temperature is 1 8 F below the desired temperature The fan operation is dependent on the fan mode selected either continuous or cycling Dip switch
65. h the refrigerant is metered through the heating capillary tubes to outdoor coils Note liquid refrigerant will also be directed through the cooling capillary tubes in a continuous loop during the heating mode 33 34 REVERSING VALVE DESCRIPTION OPERATION A WARNING ELECTRIC SHOCK HAZARD Disconnect power to the unit before servicing Failure to follow this warning could result in serious injury or death The Reversing Valve controls the direction of refrigerant flow to the indoor and outdoor coils It consists of a pressure operated main valve and a pilot valve actuated by a solenoid plunger The solenoid is energized during the heating cycle only The reversing valves used in the PTAC system is a 2 position 4 way valve The single tube on one side of the main valve body is the high pressure inlet to the valve from the compressor The center tube on the opposite side is connected to the low pressure suction side of the system The other two are connected to the indoor and outdoor coils Small capillary tubes connect each end of the main valve cylinder to the A and B ports of the pilot valve A third capillary is a common return line from these ports to the suction tube on the main valve body Four way reversing valves also have a capillary tube from the compressor discharge tube to the pilot valve The piston assembly in the main valve can only be shifted by the pressure differential between the high and low
66. he owner Digital Temperature Readout One Touch Operation Individual Mode and Fan Control Buttons Quiet Start Stop Fan Delay Remote Thermostat Operation Internal Diagnostic Program Service Error Code Electronic Temperature Limiting Room Freeze Protection Random Compressor Restart By digitally monitoring desired room temperature the room is controlled more precisely than conventional systems The large easy to read LED display can show either set point or actual room temperature as selected by owner When the unit is powered off the unit can be returned directly to heating or cooling mode by pressing the Heat or Cool buttons without the confusing power up sequence of some controls One touch control takes guess work out of unit control delivering a more enjoyable experience and eliminating front desk calls By having separate control buttons and indicators for both fan and mode settings the Friedrich digital con trol eliminates the confusion of previous digital PTACs The accurate temperature setting provides greater guest comfort than other systems The fan start and stop delays prevent abrupt changes in room acoustics due to the compressor energizing or stopping immediately Upon call for cooling or heating the unit fan will run for five seconds prior to en ergizing the compressor Also the fan off delay allows for free cooling by utilizing the already cool indoor coil to its maximum ca
67. inciples laws in its operation they are as follows 1 Heat always flows from a warmer body to a cooler body 2 Heat must be added to or removed from a substance before a change in state can occur 3 Flow is always from a higher pressure area to a lower pressure area 4 The temperature at which a liquid or gas changes state is dependent upon the pressure The refrigeration cycle begins at the compressor Starting the compressor creates a low pressure in the suction line which draws refrigerant gas vapor into the compressor The compressor then compresses this refrigerant raising its pressure and its heat intensity temperature The refrigerant leaves the compressor through the discharge Line as a hot High pressure gas vapor The refrigerant enters the condenser coil where it gives up some of its heat The condenser fan moving air across the coil s finned surface facilitates the transfer of heat from the refrigerant to the relatively cooler outdoor air When a sufficient quantity of heat has been removed from the refrigerant gas vapor the refrigerant will condense i e change to a liquid Once the refrigerant has been condensed changed to a liquid it is cooled even further by the air that continues to flow across the condenser coil The PTAC design determines at exactly what point in the condenser the change of state i e gas to a liquid takes place In all cases however th
68. ing levels where damage can occur to plumbing and fixtures Multiple compressor starts in a short period 3minutes or less can often cause electrical overloads and premature unit failure The random restart delay adds protection and eliminates those applications with multiple units from starting at once following a power outage or initial power up The compressor delay will range from 180 to 240 seconds Digital Control Operation Digital Control Panel Med gt Low v Temperature Fan Speed F vs C Display The unit is factory configured to display all temperatures in degrees Fahrenheit F To switch to degrees Celsius C press the Low Fan Speed button and Down Temperature Arrow buttons simultaneously for three seconds The display will show a C C as acknowledgement of the change To revert back to F F press the Up Temperature Arrow button once Press the Cool button one time to exit and save Cooling Mode Pressing the Cool button while the unit is in any mode including off will put the unit into cooling mode Adjust the temperature readout to the desired room temperature and the unit will cycle the compressor on and off to maintain a comfortable room The compressor will come on anytime that the room temperature is 1 8 F above the desired temperature The fan operation is dependent on the fan mode selected either continuous or cycling See Fan Mode for fan cycle control Heatin
69. ith the room freeze protection enabled Room Freeze Protection can be switched off at the Dip Switches DIP SWITCH LOCATION OF DIP SWITCHES ON UNIT Freeze guard Setpoint Limit 2 Setpoint Limit 1 Fan CON CYC for cooling Fan CON CYC for heating Wall Thermostat enable Electric heat only for Heat Pumps FRP028 1 Emergency Heat Override Enables electric heat only operation in the event of a com Down Normal Operation Up Overrides compressor operation for PDH Heat Pump pressor failure on HP models PDH models only Models Wall Thermostat Switch Enables the use of a wall thermostat or unit controls Down Unit Controls Up Enables Wall Thermostat Usage Fan Cycle for Heating Allows selection of continuous fan or cycling in heating mode Down Cycle Up Continuous Fan Cycle for Cooling Allows selection of continuous fan or cycling in cooling mode Up Cycle Setpoint Switch 1 Allows the temperature setpoint range to be adjusted 61F 86F 63F 80F 65F 78F 68F 75F 16C 30C 18C 28C 19C 26C can 7 Room Freeze Protection Allows the unit to ensure the indoor room temperature does Down Freeze Protection Enabled Up Freeze Protection Disabled not fall below 40F even when turned off Note Disconnect power to unit prior to making Dip Switch changes Power unit up after changes made When Dip Switch 2 is selected for
70. l or perform service on equipment it is your responsibility to read and obey these warnings to guard against any bodily injury or property damage which may result to you or others Your safety and the safety of others are very important We have provided many important safety messages in this manual and on your appliance Always read and obey all safety messages This is a safety Alert symbol This symbol alerts you to potential hazards that can kill or hurt you and others All safety messages will follow the safety alert symbol with the word WARNING or CAUTION These words mean A WARN NG You can be killed or seriously injured if you do not follow instructions A CAUTION You can receive minor or moderate injury if you do not follow instructions All safety messages will tell you what the potential hazard is tell you how to reduce the chance of injury and tell you what will happen if the instructions are not followed A message to alert you of potential property damage will have the NO TICE word NOTICE Potential property damage can occur if instructions are not followed PERSONAL INJURY OR DEATH HAZARDS ELECTRICAL HAZARDS Unplug and or disconnect all electrical power to the unit before performing inspections maintenance or service Make sure to follow proper lockout tag out procedures Always work in the company of a qualified assistant if possible Capacitors even when disconnected from the electrical p
71. mensions WALL SLEEVE OUTDOOR GRILLE DISCHARGE GRILLE FILTERS JS U RETURN AIR GRILLE FRONT COVER PDXWS Wall Sleeve Dimensions 16 H x 42 W x 13 4 D D Front Cover Dimensions 16 H x 42 W x 7 34 Cut Out Dimensions 16 x 42 4 Accessories New Construction Accessories PDXWSEXT PXDR10 PXSB PDXRTA PXSE PDXDAA PDXDEA WALL SLEEVE Galvanized zinc coated steel is prepared in an 11 step process then powder coated with a polyester finish and cured in an oven for exceptional durability The wall sleeve is insulated for sound absorption and thermal efficiency 16 High x 42 Wide x 13 3 4 Deep DEEP WALL SLEEVE EXTENSION For use when the wall is thicker than 13 1 4 The wall sleeve may be special ordered through your Sales Representative and will be cut to your specific depth require ments PDXWSEXT GRILLE Standard stamped aluminium anodized to resist chalking and oxidation ARCHITECTURAL GRILLES Consist of heavy gauge 6063 T5 alumi num alloy PXAA Clear extruded aluminum PXBG Beige acrylic enamel PXSC Also available in custom colors CONDENSATE DRAIN KIT Attaches to the bottom of the wall sleeve for internal draining of condensate or to the rear wall sleeve flange for exter nal draining Recommended on all units to remove excess condensate Packaged in quantities of ten DECORATIVE SUBBASE Provides unit suppor
72. metically sealed and consist of a rotary compressor that is externally mounted on vibration isolators no smaller than 1 3 8 dia x 1 7 high condenser and evaporator coils constructed of copper tubes and aluminum plate fins and capillaries as expansion devices Unit shall have a fan slinger ring to increase efficiency and condensate disposal and have a drain pan capable of retaining 1 72 gallons of condensate A tertiary condensate removal system shall also be incorporated for back up and shall overflow through the wall sleeve and to the outside of the building as a safeguard against damage to the interior room INDOOR AIR HANDLING SECTION The indoor air handling sec tion shall consist of a tangential blower wheel direct driven by a totally enclosed motor The air handling system shall be designed to minimize airflow noise and provide smooth and consistent airflow The indoor fan must have three fan speeds that may be selected by the user The indoor discharge grille shall be designed to maximize airflow throughout the room The grille shall be reversible to allow a change in the airflow directions The grille openings shall be sized to prevent personal injury or damage to the unit The front cover shall incorporate dual air filters conveniently mounted in the front ofthe unit The filters must be accessible without the removal of the front cover The filters shall be made of anti microbial material to prevent mold and bacterial growth The
73. n a burnout You will contaminate your manifold and hoses Use a Schrader valve adapter and copper tubing for burnout failures WARNING HIGH TEMPERATURES Extreme care proper judgment and all safety procedures must be followed when testing troubleshooting handling or working around unit while in operation with high temperature components Wear protective safety aids gu such as gloves clothing etc Failure to do so could result in serious burn injury NOTICE FIRE HAZARD The use of a torch requires extreme care and proper judgment Follow all safety recommended precautions and protect surrounding areas with fire proof materials Have a fire extinguisher readily available Failure to follow this notice could result in moderate to serious property damage 3 After all refrigerant has been recovered disconnect suction and discharge lines from the compressor and remove compressor Be certain to have both suction and discharge process tubes open to atmosphere 4 Carefully pour a small amount of oil from the suction stub of the defective compressor into a clean container 5 Using an acid test kit one shot or conventional kit test the oil for acid content according to the instructions with the kit 6 If any evidence of a burnout is found no matter how slight the system will need to be cleaned up following proper procedures 7 Install the replacement compressor A WARNING EXPLOSION HAZAR
74. n pack when pressure cleaning coils Note It is extremely important to insure that none of the electrical and or electronic parts of the unit get wet Be sure to cover all electrical components to protect them from water or spray 3 Decorative Front The decorative front and discharge air grille may be cleaned with a mild soap or detergent Do NOT use solvents or hydrocarbon based cleaners such as acetone naphtha gasoline benzene etc to clean the decorative front or air discharge grilles Use a damp not wet cloth when cleaning the control area to prevent water from entering the unit and possibly damaging the electronic control 4 Fan Motor amp Compressor The fan motor amp compressor and are permanently lubricated and require no additional lubrication 5 Wall Sleeve Inspect the inside of the wall sleeve and drain system periodically annually or semi annually and clean as required Under extreme conditions more frequent cleaning may be necessary Clean both of these areas with an antibacterial and antifungal cleaner Rinse both items thoroughly with water and ensure that the drain outlets are operating properly 39 40 TROUBLESHOOTING CHART COOLING REFRIGERANT SYSTEM DIAGNOSIS COOLING PROBLEM PROBLEM PROBLEM PROBLEM Low Load Conditions High Load Conditions Low Load Conditions High Load Conditions Low Air Flow Across High Air Flow Across Refrigerant System Low Air Flow Across Indoor Coil Indoor Coil
75. nce OUTDOOR DRY BULB TEMP DEGREES F AT 40 R H INDOOR WET BULB TEMP DEGREES F AT 80 F D B wars 2 sw se seo ss ser eo eo e e ees ms ms z 23 23 25 25 25 25 25 3 5 3 35 35 33 sm oss o 0 05 om os os om os os os ow os osr 0 sm os oe os os oe os os am os or oo os ot 2 152 12564 12072 mosa 12912 2000 10620 120 0740 oase 10764 026 5164 wars f o s sw s no n 213 1900 13 42 42 43 45 46 46 51 so st 55 5 55 6 6 sm os oe os os oe oor os on oo os ors oo os os 9s Brun 17640 16965 15705 16800 15840 14610 16340 15000 13275 15120 19426 11835 13455 1580 10200 1246 1266 1282 1960 14 to 15 15 654 2 1667 1004 1904 55 se se 6 6 6 67 em 67 72 72 72 79 79 79 sm osm os oss oe osr os os7 0 or os os os RATING POINT ARI 310 380 PDH 230V Extended Cooling Performance OUTDOOR DRY BULB TEMP DEGREES F AT 40 R H To INDOOR WET BULB TEMP DEGREES F AT 80 F D B wars 52 s 5 ss ss 2 amp o 60 62 e 6 23 23 24 25 25 25 25 29 29
76. nduit Kit is required with this setup Power Cord Installation All 265V PTAC PTHP units come with a factory installed non LCDI 1 Follow the removal process of the chassis s junction box power cord for use in a subbase If the unit is to be hard wired refer to ihe instructions below listed in the installation manual Figure 25 step 2 page 19 NOTE It is recommended that the PXSB subbase assembly the 2 Prepare the 265V or 230V power cord for connection to the chas PXCJA conduit kit or equivalent be installed on all hardwire sis power cord connector by cutting the cord to the appropriate units If installing a flush floor mounted unit make sure the length Figure 15 Power cord harness selection shown on Table chassis can be removed from the sleeve for service and above maintenance WARNING Electrical Shock Hazard Turn off electrical power before service or installation ALL electrical connections and wiring MUST be installed by a qualified electrician and conform to the National Code and all local codes which have jurisdiction Failure to do so can result in property damage personal injury and or death TO CHASSIS JUNCTION EXPOSE WIRES 1 0 IN TRIM HARNESS TO LENGTH f STRIP WIRE ENDS 0 5 IN TO WALL JUNCTION 2 Route the cut ends of harness through the conduit connector assembly and flex conduit sleeve Be sure to use the supplied conduit bu
77. ng system for repair Do not allow liquid refrigerant to contact skin Direct contact with liquid refrigerant can result in minor to moderate injury Be extremely careful when using an oxy acetylene torch Direct contact with the torch s flame or hot surfaces can cause serious burns Make sure to protect personal and surrounding property with fire proof materials Have a fire extinguisher at hand while using a torch Provide adequate ventilation to vent off toxic fumes and work with a qualified assistant whenever possible Always use a pressure regulator when using dry nitrogen to test the sealed refrigeration system for leaks flushing etc e Make sure to follow all safety precautions and to use proper protective safety aids such as gloves safety glasses clothing etc e Failure to follow proper safety procedures and or these warnings can result in serious injury or death MECHANICAL HAZARDS e Extreme care proper judgment and all safety procedures must be followed when testing troubleshooting handling or working around unit with moving and or rotating parts Be careful when handling and working around exposed edges and corners of sleeve chassis and other unit components especially the sharp fins of the indoor and outdoor coils e Use proper and adequate protective aids such as gloves clothing safety glasses etc e Failure to follow proper safety procedures and or these warnings can result in serious injury or de
78. nutes after it turns off This protects your compressor When the room temperature is greater than the set cool temperature by the differential temperature the cooling device is activated The RT6 will stop outputting when the call for cooling is satisfied The thermostat will not let the compressor come on for 4 minutes after it turns off This protects your compressor The RT6 has three possible operating modes OFF Heat and Cool mode In off mode the thermostat will not turn on heating or cooling devices The manual fan can be turned on in all operating modes using the fan button In heat mode the thermostat controls the heating system In the cool mode the thermostat controls the cooling system Button Functions Up button Down button SYStem left f gt TL FAN right UP Used to increase the set temperatures and to adjust configuration settings DOWN Used to decrease the set temperatures and to adjust configuration settings SYS left Used to change from OFF HEAT and COOL modes FAN right Used to turn on and off the indoor fan Operating Modes There are four possible operating modes for the RT6 Off Heat and Cool modes are accessed by pressing the SYS left button OFF Mode In this mode the thermostat will not turn on the heating or cooling devices Note The indoor fan can be turned on manually in every operating mode by pressing the FAN right button The word FAN sh
79. ow is reduced or low outdoor temperatures cause the indoor coil to freeze When the indoor coil reaches 30 F the compressor is disabled and the fan continues to operate based on demand Once the coil temperature returns to 45 F the compressor returns to operation The new Friedrich PD series units feature an indoor fan system design that reduces sound levels without lowering airflow or preventing proper air circulation The Friedrich PTAC has been engineered so that all functional systems are optimized so that they work together to deliver the highest possible performance With Friedrich s new dual motor design the indoor motor can run at slower speeds which reduces sound levels indoors High efficiency rotary compressors are used on all Friedrich PTACs to maximize durability and effi ciency Outdoor coil endplates made from stainless steel reduce corrosion on the outdoor coil common with other coil designs All Friedrich PTAC return air filters feature an antimicrobial element that has proven to prevent mold and bacterial growth in laboratory testing PDXFT replacement filter kits feature the same antimicrobial agent All filters are washable reusable and easily accessed from the top of the unit without the removal of the front cover Friedrich PTAC units are capable of introducing up to 75 CFM of outside air into the conditioned space The outdoor air passes through a washable mesh screen to prevent debris from entering the airstream
80. ower source retain an electrical charge potential capable of causing electric shock or electrocution Handle discharge and test capacitors according to safe established standards and approved procedures Extreme care proper judgment and safety procedures must be exercised if it becomes necessary to test or troubleshoot equipment with the power on to the unit Do not spray or pour water on the return air grille discharge air grille evaporator coil control panel and sleeve on the room side of the air conditioning unit while cleaning Electrical component malfunction caused by water could result in electric shock or other electrically unsafe conditions when the power is restored and the unit is turned on even after the exterior is dry Never operate the A C unit with wet hands Use air conditioner on a single dedicated circuit within the specified amperage rating Use on a properly grounded outlet only Do not remove ground prong of plug Do not cut or modify the power supply cord Do not use extension cords with the unit Follow all safety precautions and use proper and adequate protective safety aids such as gloves goggles clothing adequately insulated tools and testing equipment etc Failure to follow proper safety procedures and or these warnings can result in serious injury or death REFRIGERATION SYSTEM HAZARDS Use approved standard refrigerant recovering procedures and equipment to relieve pressure before openi
81. ows on the display and the fan icon appears when the fan operates Heat In this mode the thermostat controls the heating system When the heat outputs N the flame icon apprears on the display 68 Note For heat pumps there is a four minute delay for your compressor to restart after it has turned off To bypass the compressor time delay go to OFF mode for 5 seconds Cool Mode In this mode the thermostat controls the cooling system When the cooling oot 1 G outputs the snowflake icon apprears on the display 18 Note There is a four minute delay for your compressor to restart after it has q turned off To bypass the compressor time delay go to OFF mode for 5 seconds Set Point Adjustment Heat Set Point Use the SYS button to select Heat Mode Press the up or down button to view the current heat set point larger on the display When the large set point is displayed the HEAT icon will blink The up or down buttons can be used to adjust the set HEAT point After 5 seconds of inactivity the screen will display the room temperature and the HEAT it II not blink adiu HEAT icon will blink Cool Set Point 5 Use the SYS button to select Cool Mode Press the up or down button to view the current set point larger on the display When the large set point is displayed the COOL icon will blink The up or down buttons b
82. pacity by running for 30 seconds after the compressor Some applications require the use of a wall mounted thermostat All new Friedrich PTACs may be switched from unit control to remote thermostat control easily without the need to order a special model or acces sory kit The new Friedrich digital PTAC features a self diagnostic program that can alert maintenance to compo nent failures or operating problems The internal diagnostic program saves properties valuable time when diagnosing running problems The self diagnosis program provides error codes shown in the controller display if certain conditions occur such as extreme high or low operating conditions or activation of the room freeze protection feature Dislaying error codes can help properties determine if the unit faced obscure conditions or if an error occurred and corrected itself By limiting the operating range the property can save energy by eliminating max cool or max heat situ ations common with older uncontrolled systems The new electronic control allows owners to set operating ranges for both heating and cooling independently of one another When the PTAC senses that the indoor room temperature has fallen to 40 F the unit will cycle on high fan and the electric strip heat to raise the room temperature to 46 F then cycle off again This feature works regardless of the mode selected and can be turned off This feature ensures that unoccupied rooms do not reach freez
83. pe of refrigerant as shown on rating plate Crimp the process tubes and solder the ends shut Do not leave Schrader or piercing valves in the sealed system NOTE When brazing a reversing valve into the system it is of extreme importance that the temperature of the valve does not exceed 250 F at any time Wrap the reversing valve with a large rag saturated with water Re wet the rag and thoroughly cool the valve after each brazing operation of the four joints involved The wet rag around the reversing valve will eliminate conduction of heat to the valve body when brazing the line connection COMPRESSOR CHECKS A WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation Extreme care must be used if it becomes necessary to work on equipment with power applied Failure to do so could result in serious injury or death Locked Rotor Voltage L R V Test Locked rotor voltage L R V is the actual voltage available at the compressor under a stalled condition Single Phase Connections Disconnect power from unit Using a voltmeter attach one lead of the meter to the run terminal on the compressor and the other lead to the common terminal of the com pressor Restore power to unit Determine L R V Start the compressor with the volt meter attached then stop the unit Attempt to restart the compressor within a couple of seconds and immediately read the voltage on th
84. reeze protection Random compressor restart Electronic temperature limiting The PTAC must also offer the ability to be controlled by a remote wall mounted thermostat without additional accessories Low voltage inputs will include C common R 24V power Y cooling GL fan low GH fan high W heat and O reversing valve on PDH heat pumps only PTAC models shall use a single stage cool single stage heat ther mostat PTHP models shall use a single stage cool two stage heat thermostat An accessory thermostat must be available from the manufacturer RT6 or equivalent The RT6 thermostat will provide temperature setpoint mode selection from cool heat and fan modes The thermostat must also allow the selection of fan speed between high and low speed Other controls accessible without removal of the chassis shall include fan cycle switch fresh air vent control and emergency heat override switch heat pump only ELECTRICAL CONNECTION All PTAC PTHP units shall come from the factory with a power cord installed All 230 208V power cords shall feature a leakage current detection device on the plug head All units shall feature a 6 pin connector for removal of the power cord The power cord shall be interchangeable to allow changes to the heater output based on the property electrical requirements GENERAL CONSTRUCTION The wall sleeve shall be constructed of 18 gauge Galvanized zinc coated steel It shall be prepared by a p
85. rigerant restrictions Partial restrictions and complete restrictions A partial restriction allows some of the refrigerant to circulate through the system With a complete restriction there is no circulation of refrigerant in the system Restricted refrigerant systems display the same symptoms as a low charge condition When the unit is shut off the gauges may equalize very slowly Gauges connected to a completely restricted system will run in a deep vacuum When the unit is shut off the gauges will not equalize at all A quick check for either condition begins at the evaporator With a partial restriction there may be gurgling sounds at the metering device entrance to the evaporator The evaporator in a partial restriction could be partially frosted or have an ice ball close to the entrance of the metering device Frost may continue on the suction line back to the compressor Often a partial restriction of any type can be found by feel as there is a temperature difference from one side of the restriction to the other With a complete restriction there will be no sound at the metering device entrance An amperage check of the compressor with a partial restriction may show normal current when compared to the unit specification Improper air flow over the evaporator coil may indicate some of the same symptoms as an over charged system An overcharge can cause the compressor to fail since it would be slugged with
86. rocess where it is zinc phosphate pretreated and sealed with a chromate rinse then powder coated with a polyester finish and oven cured for durability The sleeve shall be shipped with a protective weatherboard and a structural center support and be insulated for sound absorption and thermal efficiency The grille or louver shall be shipped separately and made from stamped or extruded anodized aluminum All louvers shall be in the horizontal plane The front panel shall attach firmly to the chassis by two hidden spring clips As an option the cover may be attached by two screws to pre vent tampering The front panel will feature a contoured discharge with no sharp corners CORROSION PROTECTION The unit shall have corrosion resistant fans fan shroud and drain pan for corrosion protection and to prevent rust on the side of the building below the outdoor louver The unit shall feature corrosion resistant materials and finishes to help prevent dete rioration The outdoor coil shall have Diamonblue corrosion protection consisting of hydrophilic coated fins to prolong the life of the coil in all applications including seacoast environments All outdoor coils shall also have stainless steel endplates to eliminate rusting of the endplates WARRANTY The warranty is one year on all parts and 5 years on the sealed system including compressor indoor and outdoor coils and refrigerant tubing Component Identification Typical Unit Components and Di
87. s Use the output chart to correctly configure and wire the thermostat to your system Configuration Mode The configuration mode is used to set the RT6 to match your heating cooling system The RT6 functions with heat pump air conditioning or electric heat systems Note Thermostat comes configured for 1 stage heat 1 stage cooling for use with all heat cool and single stage heat pump models For Friedrich PTHP models follow the instructions below to configure the thermostat for two stage heat pump operation using the O terminal To configure the RT6 perform the following steps 1 Verify the RT6 is in the OFF mode Press the SYS left button until off mode displays 1 2 Remove the cover of the thermostat by gently pulling near one of the corners at the top of the thermostat pm 3 Press the CONFIG button for 1 second while the RT6 is in OFF mode Press the up or down button to change settings within each screen p Up button y Down button Press the right button to advance to the next screen I Note Pressing the left button will return you to the previous screen Left Right button button To exit configuration mode press the CONFIG switch for 1 second 45 46 Configuration Mode Settings The setup screens for Configuration Mode are as follows 1 System Set for heat pump non heat pump reversing valve operation System Setting Reversing Val
88. shing to prevent damage to the cord by the conduit The cord should pass through the Locknut Spacer Chassis Junction Box Conduit Connector Bushing then the Conduit Sleeve Refer to wire harness insertion diagram Route the cut ends of the power cord through the elbow connector at the other end of the conduit Tighten screws on elbow connector to secure conduit sleeve Fasten and secure the elbow connector to the wall junction box cover with locknut Place and mount the wall junction box with the four wall mounting screws making sure to pass the wall lines through the junction box Connect and join all wall lines with the stripped ends using wire nuts Tighten both screws of the wall junction box cover to junction box STRAIGHT CONNECTOR JUNCTION BOX GROUND N WIRE HARNESS Q JUNCTION SCREWS BOX COVER LEADING SIDE FOR WIRE HARNESS INSERTION SPACER a LOCKNUT CALLI MEE AAA CHASSIS JUNCTION BOX SPACER CONDUIT CONNECTOR BUSHING CONDUIT SLEEVE EXITING SIDE FOR WIRE HARNESS UL FRP034 17 18 Remote Control Thermostat Installation Install Thermostat 1 Approximately 5 ft from the floor 2 Close to or in a frequently used room preferably on an inside wall 3 On a section of wall without pipes or ductwork The Thermostat should NOT be mounted 1 Close to a window on an outside wall or nex
89. sides TESTING THE COIL A WARNING ELECTRIC SHOCK HAZARD Unplug and or disconnect all electrical power inspections to the unit before performing maintenances or service Failure to do so could result in electric shock serious injury or death The solenoid coil is an electromagnetic type coil mounted on the reversing valve and is energized during the operation of the compressor in the heating cycle Turn off high voltage electrical power to unit Unplug line voltage lead from reversing valve coil 3 Check for electrical continuity through the coil If you do not have continuity replace the coil 4 Check from each lead of coil to the copper liquid line as it leaves the unit or the ground lug There should be no continuity between either of the coil leads and ground if there is coil is grounded and must be replaced If coil tests okay reconnect the electrical leads 6 Make sure coil has been assembled correctly of the system The pilot section of the valve opens and closes ports for the small capillary tubes to the main valve to cause it to shift NOTE System operating pressures must be near normal before valve can shift PILOT SOLENOID VALVE FROM VALVE DISCHARGE TO OUTDOOR 4 WAY REVERSING VALVE NOTE Do not start unit with solenoid coil removed from valve or do not remove coil after unit is in operation This will cause the coil to burn out CHECKING THE REVERSING VALVE NOTE You must hav
90. t 1 Press FAN right button Fan displays Indoor fan turns ON 2 Press FAN right button Indoor fan turns OFF Troubleshooting Symptom Remedy No display Check for 24 VAC at thermostat display is blank when 24 VAC is not present All thermostat buttons are inoperative Verify 24 VAC is present unit locks out when 24 VAC is not present No response with first button press First button press activates backlight only Thermostat turns on and off too Adjust temperature differential frequently see Configuration Mode Settings 3 amp 4 Fan runs continuously Press FAN right button to turn fan off Room temperature is not correct Calibrate thermostat see Configuration Mode Setting 10 Heat or Cool not coming on Verify wiring is correct gently pull on each wire to verify there is a good connection at terminal block HEAT blinking In heat set point screen COOL blinking In cool set point screen Problem not listed above Press Reset button once Reset Button Function Display is refreshed configuration settings are unchanged Resistance Table for Air Indoor Temperature Sensor Temp Resistance Temp Resistance Temp Resistance Temp Resistance F F gt 19 138 100 20 18 750 59 3 848 98 1 071 18 128 600 21 17 930 60 3 711 99 1 039 17 121 60
91. t for walls less than six inches thick Includes leveling legs side filler panels and mount ing brackets for electrical accessories Accepts circuit breaker power disconnect switch or conduit kit DIGITAL REMOTE WALL THERMOSTAT Single stage cool single stage heat for PDE models or single stage cool dual stage heat for PDH model thermostat features high low fan speed switch Thermostat is hard wired and can be battery powered or unit powered Features backlit display and multiple configuration modes For use on PD series Friedrich PTACs and Vert I Paks REMOTE THERMOSTAT ESCUTCHEON KIT This kit contains ten escutcheons that can be placed over the factory control buttons when a remote wall mounted thermostat is used The escutcheon directs the guest to the wall thermostat for operation and retains the LED window to display error codes and diagnostic information lnm SLEEVE EXTENSION RETROFIT KIT Galvanized zinc coated steel 2 4 sleeve extension attached to the room side of the sleeve to allow for the installation of a PD Series Friedrich PTAC in a T Series sleeve LATERAL DUCT ADAPTER Attaches to the PTAC PTHP unit and provides a transition to direct up to 35 of the total CFM to a second ary room either left or right of the unit Kit includes duct plenum with discharge grille and internal baffle adapter and end cap LATERAL DUCT EXTENSION A three foot insulated plenum that at taches to the left or right side of the duct
92. t through service cord to unit or through separate ground wire provided on permanently connected units Be sure that branch circuit or general purpose NOTE Use Copper Conductors ONLY Wire sizes outlet is grounded The field supplied are per NEC check local codes for overseas applica outlet must match plug on service cord tions and be within reach of service cord Refer to Table 1 for proper receptacle and fuse Table 1 250 V Receptacles and Fuse Types type Do NOT alter the service cord or plug Do NOT use an extension cord The field supplied outlet must match plug RECEPTACLE on service cord and be within reach of RECEPTACLE service cord Refer to Table 1 for proper receptacle and fuse type Do NOT alter the service cord or plug Do NOT use an extension cord HACR Heating Air Conditioning Refrigeration Use recommended wire size given May be used for 15 Amp applications if fused for 15 Amp in Table 2 and install a single branch NOTE 265 volt units are hard wired NA circuit All wiring must comply with local TIME DELAY TYPE FUSE or HACR circuit breaker and national codes NOTE Use copper conductors only Table 2 Recommended branch circuit wire sizes NAMEPLATE MAXIMUM 7 CIRCUIT BREAKER SIZE AWG WIRE SIZE 15 14 12 10 AWG American Wire Gauge Single circuit from main box Based on copper wire single insulated conductor at 60 C POWER CORD INFORMATION 230 208V MODELS O
93. t to a door leading outside 2 Where it can be exposed to direct sunlight or heat such as the sun a lamp fireplace or any temperature radiating object which may cause a false reading 3 Close to or in the direct airflow of supply registers and or return air grilles 4 areas with poor air circulation such as a corner behind a door or an alcove Remote Thermostat and Low Voltage Control Connections Remote Thermostat All Friedrich PD model PTAC units are factory configured to be controlled by either the chassis mounted Smart Center or a 24V remote wall mounted thermostat The thermostat may be auto or manual changeover as long as the control configuration matches that of the PTAC unit NOTE All PDE models require a single stage cool single stage heat thermostat All PDH models require a single stage cool dual stage heat thermostat with an O reversing valve control The Friedrich RT6 thermostat can be configured for either model To control the unit with a wall mounted thermostat follow the steps below 1 Unplug the unit before doing any work 2 With the front cover removed locate the dip switches located below the Smart Center control panel Switch Dip switch 2 to the up on ON position Remove the low voltage terminal block from the unit Connect the corresponding terminals from the wall thermostat to the terminal block Replace the terminal block on the unit Restore power to the unit The unit
94. tain the temperature This feature ensures guest comfort by delivering the heating benefits of an electric heater while maintaining the ef ficiency benefits of a heat pump The owner may choose between fan cycling or fan continuous mode based on property preference Note Even heat monitoring and quiet start stop fan delay only operate in fan cycle mode Fan continuous mode is used to keep constant airflow circulation in the room during all times the unit is ON Fan cycle will conserve energy by only operating the fan while the compressor or electric heater is operating The ability to set the fan cycling condition independently between heating and cooling mode will increase user comfort by allowing the choice of only constantly circulating air in the summer or winter time Unlike other PTAC brands that only allow one selection In the event of a compressor failure in heat pump mode the compressor may be locked out to provide heat through the resistance heater This feature ensures that even in the unlikely event of a compressor failure the room temperature can be maintained until the compressor can be serviced All Friedrich digital PTACs have low voltage terminals ready to connect a desk control energy manage ment system Controlling the unit from a remote location like the front desk can reduce energy usage and requires no additional accessories on the PTAC unit The frost sensor protects the compressor from damage in the event that airfl
95. tance Table for Frost Protection Indoor and Outdoor Temperature Sensors Temp Resistance Temp Resistance Temp Resistance Temp Resistance 19 181 400 20 25 010 59 5 130 98 1 427 18 171 400 21 23 900 60 4 948 99 1 386 17 162 100 22 22 850 61 4 773 100 1 346 16 153 300 23 21 850 62 4 605 101 1 307 15 145 000 24 20 900 63 4 443 102 1 269 14 137 200 25 20 000 64 4 289 103 1 233 13 129 900 26 19 140 65 4 140 104 1 198 12 123 000 27 18 130 66 3 998 105 1 164 11 116 500 28 17 550 67 3 861 106 1 131 10 110 300 29 16 800 68 3 729 107 1 099 9 104 600 30 16 100 69 3 603 108 1 069 8 99 130 31 15 430 70 3 481 109 1 039 7 94 000 32 14 790 71 3 364 110 1 010 6 89 170 33 14 180 72 3 252 111 0 983 5 84 610 34 13 590 73 3 144 112 0 956 4 80 310 35 13 040 74 3 040 113 0 930 3 76 240 36 12 510 75 2 940 114 0 904 2 72 410 37 12 000 76 2 844 115 0 880 1 68 790 38 11 520 77 2 752 116 0 856 0 65 370 39 11 060 78 2 663 117 0 833 1 62 130 40 10 620 79 2 577 118 0 811 2 59 080 41 10 200 80 2 495 119 0 770 3 56 190 42 9 803 81 2 415 120 0 769 4 53 460 43 9 420 82 2 339 121 0 746 5 50 870 44 9 054 83 2 265 122 0 729 6 48 420 45 8 705 84 2 194 123 0 710 7 46 110 46 8 370 85 2 125 124 0 692 8 43 920 47 8 051 86 2 059 125 0 674 9 41 840 48 7 745 87 1 996 126 0 658 10 39 870 49 7 453 88 1 934 127 0
96. te plus sixty days Replacement parts can be new or remanufactured Replacement parts and labor are only warranted for any unused portion of the unit s warranty We will not be responsible for and the user will pay for 1 Service calls to A Instruct on unit operation B Replace house fuses or correct house wiring C Clean or replace air filters D Remove the unit from its installed location when not accessible for service required E Correct improper installations 2 Parts or labor provided by anyone other than an authorized service center 3 Damage caused by A Accident abuse negligence misuse riot fire flood or acts of God B Operating the unit where there is a corrosive atmosphere containing chlorine fluorine or any damaging chemicals other than in a normal residential environment C Unauthorized alteration or repair of the unit which in turn affects its stability or performance D Failing to provide proper maintenance and service E Using an incorrect power source F Faulty installation or application of the unit We shall not be liable for any incidental consequential or special damages or expenses in connection with any use or failure of this unit We have not made and do not make any representation or warranty of fitness for a particular use or purpose and there is no implied condition of fitness for a particular use or purpose We make no expressed warranties except as stated in this certificate No one is authorize
97. ure Method Of Charging Repairs The acceptable method for charging the RAC system is the Weighed in Charge Method The weighed in charge method is applicable to all units It is the preferred method to use as itis the most accurate The weighed in method should always be used whenever a charge is removed from a unit such as for a leak repair compressor replacement or when there is no refrigerant charge left in the unit To charge by this method requires the following steps 1 Install a piercing valve to remove refrigerant from the sealedsystem Piercing valve must be removed from the system before recharging 2 Recover Refrigerant in accordance with EPA regulations AWARNING BURN HAZARD Proper safety procedures must be followed and proper protective clothing must be worn when working with a torch Failure to follow these procedures could result in moderate or serious injury 3 Install a process tube to sealed system AWARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation Extreme care must be used if it becomes necessary to work on equipment with power applied Failure to do so could result in serious injury or death HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure Proper safety procedures must be followed and proper protective clothing must be worn when working with refrigerants Fail
98. ure to follow these procedures could result in serious injury or death CAUTION FREEZE HAZARD Proper safety procedures must be followed and proper protective clothing must be worn when working with liquid refrigerant Failure to follow these procedures could result in minor to moderate injury 4 Make necessary repairs to system 5 Evacuate system to 200 microns or less 6 Weigh in refrigerant with the property quantity of R 410A refrigerant 7 Start unit and verify performance A WARNING BURN HAZARD Proper safety procedures must be followed and proper protective clothing must be worn when working with a torch ww Failure to follow these procedures could result in moderate or serious injury 8 Crimp the process tube and solder the end shut Undercharged Refrigerant Systems An undercharged system will result in poor performance low pressures etc in both the heating and cooling cycle Whenever you service a unit with an undercharge of refrigerant always suspect a leak The leak must be repaired before charging the unit To check for an undercharged system turn the unit on allow the compressor to run long enough to establish working pressures in the system 15 to 20 minutes During the cooling cycle you can listen carefully at the exit of the metering device into the evaporator an intermittent hissing and gurgling sound indicates a low refrigerant charge Intermittent
99. ve Setting Friedrich Models Heat Pump HP O Energized in Cooling PDH PTHP Only Heat Cool and Single Stage wa VEA PDE PTAC Kuhl Heat Pump Only Press the up or down button to select elf Press the right button to advance to the next screen 2 Temperature Scale F or C Choose Fahrenheit or Celsius Press the up or down button to select Press the right button to advance to the next screen 3 1 Stage Temperature Differential 1 F to 5 F 0 5 C to 2 5 C Set the number of degrees between your setpoint temperature and your turn on temperature i Press the up or down button to set differential value dfF Press the right button to advance to the next screen 4 2 Stage Temperature Differential 1 F to 5 F 0 5 C to 2 5 C For HP 0 only Set the number of degrees between when stage 1 turns on and when stage 2 turns on Press the up or down button to set differential value Press the right button to advance to the next screen dfF 5 Staged Off Outputs For HP 0 only Select whether the outputs for heating and cooling are staged off independently or are satisfied simultaneously 1 outputs staged off independently 50 0 outputs off simultaneously Press the up or down button to set Press the right button to advance to the next screen 6 Auxiliary Delay ON 0 30 minutes For HP 0 only Set the delay time in minutes for auxiliary heat to be locked out
100. wering of the indoor air temperature hence the cooling effect The expansion and absorbing of heat cause the liquid refrigerant to evaporate i e change to a gas Once the refrigerant has been evaporated changed to a gas it is heated even further by the air that continues to flow across the evaporator coil The particular system design determines at exactly what point in the evaporator the change of state i e liquid to a gas takes place In all cases however the refrigerant must be totally evaporated changed to a gas before leaving the evaporator coil The low pressure suction created by the compressor causes the refrigerant to leave the evaporator through the suction line as a cool low pressure vapor The refrigerant then returns to the compressor where the cycle is repeated Condenser Coil Compressor Refrigerant Drier Liquid Line 29 30 R 410A SEALED REFRIGERATION SYSTEM REPAIRS IMPORTANT SEALED SYSTEM REPAIRS TO COOL ONLY MODELS REQUIRE THE INSTALLATION OF A LIQUID LINE DRIER SEALED SYSTEM REPAIRS TO HEAT PUMP MODELS REQUIRE THE INSTALLATION OF A SUCTION LINE DRIER EQUIPMENT REQUIRED 1 Voltmeter 2 Ammeter 3 Ohmmeter 4 E P A Approved Refrigerant Recovery System 5 Vacuum Pump capable of 200 microns or less vacuum gt Acetylene Welder 7 Electronic Halogen Leak Detector capable of detect ing HFC Hydrofluorocarbon refrigerants 8
101. y where from a few minutes to several hours for the overload to reset Checking the Overload A WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation Extreme care must be used if it becomes necessary to work on equipment with power applied Failure to do so could result in serious injury or death AWARNING BURN HAZARD Certain unit components operate at temperatures hot enough to cause burns Proper safety procedures must be followed and proper protective clothing must be worn anth IRE Failure to follow this warning could result in moderate to serious injury External Overload With power off remove the leads from compressor termi nals If the compressor is hot allow the overload to cool before starting check Using an ohmmeter test continu ity across the terminals of the external overload If you do not have continuity this indicates that the overload is open and must be replaced OHMMETER ROTARY COMPRESSOR ELECTRIC SHOCK HAZARD Turn off electric power before service or installation Extreme care must be used if it becomes necessary to work on equipment with power applied Failure to do so could result in serious injury or death Remove the leads from the compressor terminals and set the ohmmeter on the lowest scale R x 1 Touch the leads of the ohmmeter from terminals common to start C to S Next touch the leads of the ohmmeter

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