Home

Bryant 581B Air Conditioner User Manual

Contents

1. NEGATIVE PRESSURE IN UNIT in wg E 0 123456 7 8 9 10 1112 13 14 15 16 17 18 19 20 21 22 23 OUTDOOR AIRFLOW cfm in 100 s EXAMPLE Given Negative Pressure 0 2 in wg CLITA ON AIT n tee S es hava ce Un e 900 Determine Setting 5 in Fig 22 Varislide Economizer Minimum Position Setting 8 Remove tape from outdoor air thermostat OAT F as ten OAT to inside of hood using screws and speed dips provided See Fig 23 Make sure OAT terminals are positioned up 9 Replace outdoor air opening panel using screws from Step 2 Replace filter access panel Ensure the filter access panel slides along the tracks and is securely engaged 10 Fasten hood top and side plate assembly Fig 17 to outdoor air opening panel with screws provided 11 Place knob supplied with economizer on OAT See Fig 23 Set for 3 F below indoor room thermostat set ting If accessory enthalpy control EC is used in place of OAT see instructions shipped with EC for installa tion and adjustment See Fig 23 12 Connect OAT per Fig 24 13 Slide outdoor air inlet screen into screen track on hood side plate While holding screen in place fasten screen retainer to hood using screws provided NOTE Refer to Fig 25 for economizer barometric relief damper characteristics H Optional P
2. 29 V Refrigerant Charge 29 Main Burners 30 Vil Flue Gas Passageways 30 Combustion Air Blower 30 IX Limit Switch 31 X Burner Ignition 31 Replacement Parts 32 TROUBLESHOOTING 33 36 START UP CHECKLIST CL 1 SAFETY CONSIDERATIONS A WARNING I mproper installation adjustment alter ation service maintenance or use can cause carbon mon oxide poisoning explosion fire electric shock or other occurrences which may injure you or damage your property Consult a qualified installer service agency or the gas supplier for information or assistance The qualified installer or agency must use only factory authorized kits or accessories when modifying this product Recognize safety information This is the safety alert sym bol When you see this symbol on the unit and in in structions or manuals be alert to the potential for personal injury Understand the signal words DANGER WARNING and CAUTION These words are used with the safety alert 581B 36 2 9 15 98 Cancels 581B 36 1 Fig 1 Typical Unit symbol Danger identifies the most serious hazards which will result in severe personal injury or death Warning indic
3. NOTES 1 In compliance with NEC requirements for multimotor and combina tion load equipment refer to NEC Articles 430 and 440 the over current protective device for the unit shall be fuse or HACR breaker The CUL units may be fuse or circuit breaker 2 Unbalanced 3 Phase Supply Voltage Never operate a motor where a phase imbalance in supply voltage is greater than 2 Use the following formula to determine the percent age of voltage imbalance Control Voltage Connections Install a factory approved room thermostat See Table 4 Lo cate the thermostat on an inside wall in the space to be con ditioned where it will not be subjected to either a cooling or heating source or direct exposure to sunlight Mount the ther mostat 4 to 5 ft above the floor Route thermostat cable or equivalent single leads of colored wire from subbase terminals through connector on unit to low voltage connections shown in Fig 14 Connect thermostat wires to matching screw terminals of low voltage connection board See Fig 14 NOTE For wire runs up to 50 ft use no 18 AWG insulated wire 35 C minimum For 50 to 75 ft use no 16 AWG insu lated wire 35 C minimum For 75 to 155 ft use no 14 AWG insulated wire 35 C minimum All wire larger than no 18 AWG cannot be directly connected to the thermostat and will require a junction box and splice at the thermostat max voltage deviation from average voltage average voltage EXAMP
4. 08 Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 1162 125 1125 121 1160 1195 BELT DRIVE MOTOR AIRFLOW External Static Pressure in wg Cfm 1167 1 23 1202 1 32 1197 1 35 1232 1 45 1229 1 48 1262 1 58 LEGEND 6 Bhp Brake Horsepower Input to Fan NOTES 1 Boldface indicates field supplied drive is required See Note 4 7 2 I indicates field supplied motor and drive required 3 indicates maximum usable bhp 4 Motor drive range is 840 to 1185 rpm All other rpms require a field supplied drive 5 Values include losses for filters unit casing and wet coils o co 24 1 5 309 a et gt a e nig Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 1134 1171 1210 0 80 0 94 1 12 1185 1219 1257 0 88 1 00 1 17 1 10 Maximum continuous bhp is 1 2 Extensive motor and electrical testing on these units ensure that the full range of the motor can be utilized with confidence Using your fan motors up to the ratings shown will not result in nuisance trip ping or premature motor failure Unit warranty will not be affected Use of a field supplied motor may affect wire sizing Contact your local repre sentative to verify Interpolation is permissible Do not extrapolate Minimum allowable cfm is 300 cfm ton Table 11 5818060 Air Delivery Ve
5. 700 06 26 30 15 2 575360 518 632 77 560 06 26 30 122 LEGEND EXAMPLE Supply voltage is 460 3 60 AB 452 v FLA Full Load Amps HACR Heating Air Conditioning and Refrigeration BG 455 Indoor Evaporator Fan Motor V 452 464 455 LRA Locked Rotor Amps Average Voltage SVE TOS TRY MCA Minimum Circuit Amps 3 MOCP Maximum Overcurrent Protection _ 1371 NEC National Electrical Code 8 OFM Outdoor Condenser Fan Motor 457 RLA Rated Load Amps n E UL Underwriters Laboratories Determine maximum deviation from average voltage m 457 452 5 Used to determine minimum disconnect NEC BC 464 457 7 v TFuse or HACR circuit breaker AC 457 455 2v Maximum deviation is 7 v U Determine percentage of voltage imbalance 7 o C L US Voltage Imbalance 100 x 457 1 53 This amount of phase imbalance is satisfactory as it is below the NOTES maximum allowable 2 1 In compliance with NEC requirements for multimotor and combina IMPORTANT If the supply voltage phase imbalance is more than tion load equipment refer to NEC Articles 430 and 440 the over 296 contact your local electric utility company immediately current protective device for the unit shall be fuse or HACR breaker 8 575 v units are UL Canada approved only The CUL units may be fuse or circuit breaker 2 Unbalanced 3 Phase Supply Vol
6. ing panel outward Panel is now disengaged from track and can be removed No tools are required to remove filter access panel Remove outdoor air opening panel Save panels and screws See Fig 16 Remove optional outdoor air damper hood package from filter section 3 Assemble outdoor air hood top and side plates as shown in Fig 17 Install seal strips on hoop top and sides Put aside screen retainer and retainer screw for later assembly Do not attach hood to unit at this time 4 Slide economizer into unit and secure with screws See Fig 18 NOTE Besure to engage rear economizer flange under tabs in vertical return air opening 5 To convert to horizontal discharge application a Rotate the economizer 90 degrees until the econo mizer motor faces the condenser section see F ig 19 b Rotate the barometric relief damper cover 90 degrees Install horizontal discharge block off plate over the opening on the access panel Block off plate MUST be installed before installing hood assem bly See Fig 20 6 Insert economizer plug into economizer harness Re move tape from barometric relief damper See Fig 21 7 f ventilation air is not required proceed to Step 9 If ventilation air is required determine the minimum po sition setting for required airflow See Fig 22 Adjust minimum position setting by adjusting the screws on the position setting bracket Slide bracket until the top screw is in the position deter
7. 10 750 620 Refer to Table 10 2 National Fire Protection Association NFPA latest edition This length includes an ordinary number of fittings NOTE Typical natural gas heating value is 1000 Btuh per cubic ft For example A 115 000 Btuh input unit equals 115 cubic ft per hour or When installing the gas supply line observe local codes per taining to gas pipe installations Refer to the NFGC ANSI 2223 1 1992 in Canada CAN CGA B149 1 2 M86 or NFPA 54 1992 in the absence of local building codes Adhere to the following pertinent recommendations 1 Avoid low spots in long runs of pipe Grade all pipe Y4 inch in every 15 ft to prevent traps Grade all hori zontal runs downward to risers Userisers to connect to heating section and to meter Protect all segments of piping system against physical and thermal damage Support all piping with appropri ate straps hangers etc Use a minimum of one hanger every 6 ft SeeFig 10 For pipe sizes larger than Y2 in follow recommendations of national codes Apply joint compound pipe dope sparingly and only to malethreads of joint when making pipe connections Use only pipe dope that is resistant to action of liquefied pe troleum gases as specified by local and or national codes Never use Teflon coated tape Install sediment trap in riser leading to heating sec tion This drip leg functions as a trap for dirt and con densate Install trap where condensate can not freeze
8. BELT DRIVE MOTOR AIRFLOW External Static Pressure in wg 1543 1585 1598 Cfm 25 On LEGEND Bhp Brake Horsepower Input to Fan NOTES 1 Boldface indicates field supplied drive is required See Note 4 2 indicates field supplied motor and drive required indicates maximum usable bhp Motor drive range is 1120 to 1585 rpm All other roms require a field supplied drive Values include losses for filters units casing and wet coils Maximum continuous bhp is 2 40 Extensive motor and electrical test ing on these units ensures that the full range of the motor can be utilized with confidence Using your fan motors up to the ratings shown will not result in nuisance tripping or premature motor failure Unit warranty will not be affected Use of a field supplied motor may affect wire sizing Contact your lo cal representative to verify Interpolation is permissible Do not extrapolate Minimum allowable cfm is 300 cfm ton Table 13 581B036 Air Delivery Horizontal Discharge Units BELT DRIVE MOTOR AIRFLOW External Static Pressure in wg 00 02 092 04 4 o eee 22 Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Bhp Cfm BELT DRIVE MOTOR AIRFLOW External Static Pressure in wg Cfm LEGEND Using your fan motors up to the ratings shown will not result in n
9. Loosen fan pulley setscrews 2 Slide fan pulley along fan shaft 3 Make angular alignment by loosening motor from mounting To adjust belt tension 1 Loosen fan motor nuts 2 Slide motor mounting plate away from fan scroll for proper belt tension 2 deflection with one finger and tighten mounting nuts 3 Adjust lock bolt and nut on mounting plate to secure motor in fixed position CAPACITOR MOTOR 581B036 048 MOUNTING SINGLE PHASE PLATE NUTS UNITS ONLY Fig 33 Belt Drive Motor Mounting MOVABLE FLANGE STRAIGHTEDGE MUST BE PARALLEL WITH BELT MOTOR AND FAN SHAFTS MUST BE PARALLEL SETSCREWS FIXED FLANGE SINGLE GROOVE Fig 34 Evaporator Fan Pulley Adjustment B Ventilation Sequence If unit is equipped with an economizer the damper will open to the minimum position whenever the evaporator fan runs The damper motor will be energized with 24 vac power and damper will drive open until SW3 on the damper is de activated The damper motor will stop and damper will remain in the minimum ventilation position until the evapo rator fan is shut off When the evaporator fan is shut off the damper motor is again energized and the damper runs closed until SW2 is activated and the damper motor turns off When unit is equipped with an economizer additional out door air can be brought in through the damper to provide cooling If the unit calls for cooling and the ou
10. control circuit down period before resetting Check 24 v circuit breaker reset as necessary Burned out heat anticipator in Replace thermostat thermostat Broken thermostat wires Run continuity check Replace wires if necessary Dirty air filter Clean or replace filter as necessary manifold pressure or replace with correct orifices Limit switch cycles main burners Check rotation of blower thermostat heat anticipator settings and temperature rise of unit Adjust as needed Too much outdoor air Adjust minimum position Check economizer operation Poor flame Incomplete combustion lack of Check all screws around flue outlets and burner compartment Tighten as characteristics combustion air results in necessary Aldehyde odors carbon monoxide Cracked heat exchanger sooting flame or floating flame Overfired unit reduce input change orifices or adjust gas line or manifold pressure Check vent for restriction Clean as necessary Check orifice to burner alignment Burners will not Unit is locked into Heating mode Wait until mandatory one minute time period has elapsed or reset power to unit turn off for a one minute minimum Table 20 Cooling Service Analysis PROBLEM CAUSE REMEDY Compressor and Call power company condenser fan Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker will not start Defective thermostat contactor transformer Replace component cont
11. 1 7 1 DISCONNECT SIZE 5818072 Fig 13 Power Wiring Connections R LOW VOLTAGE RACEWAY CONNECTIONS INTEGRATED GAS UNIT SCREW TERMINALS CONTROLLER IGC Yt y CONNECTIONS A e v2 z e 8 LOW VOLTAGE SECTION w1 w2 TYPICAL THERMOSTAT CONNECTION BOARD LEGEND AHA Adjustable Heat Anticipator Thermostat Cooling Cooling Compensator TH Thermostat Heating RC 24 v Cooling Field Wiring RH 24 v Heating _ Factory Wiring NOTE Connect Y2 when unit is equipped with an integrated HOLE IN END PANEL HIDDEN economizer Fig 14 Low Voltage Connections With or Fig 15 Field Control Wiring Raceway Without Economizer or Two Position Damper 10 High Voltage Connections Fig 13 Laboratories approved copper connector Install con Theunit must have a separate electrical service with a field duit connectors in side panel power supply knockout supplied waterproof fused disconnect switch mounted at or openings indicated in Fig 2 Route power lines through within sight from the unit Refer to the unit rating plate for connector to unit control box maximum fuse circuit breaker size and minimum circuit amps Special Procedures for 208 V Operation ampacity for wire sizing The field supplied disconnect switch box may be mounted on A DANGER Make sure that the power supply to the the unit over the high vol
12. 25 Varislide Economizer Barometric Relief Damper Characteristics Save panels and screws Remove optional economizer so the outdoor air damper hood package can be re moved from the filter section See Fig 16 3 Assembly outdoor air hood top and side plates as shown 4 in Fig 17 Install seal strips on hoop top and sides Put aside screen retainer and retainer screw for later assembly Do not attach hood to unit at this time Slide economizer into unit and secure with screws See Fig 26 NOTE Besure to engage rear economizer flange under tabs in vertical return air opening 15 5 6 Insert economizer plug into economizer harness Re move tape from barometric relief damper See Fig 26 If ventilation is not required proceed to Step 7 If ven tilation air is required perform the following a Make sure the factory installed jumper is in place across terminals P and P1 on the economizer logic module T and T1 should be disconnected during adjustment b The 2 potentiometers with slots for adjustment are located on the face of the economizer logic module Turn the lower potentiometer fully clockwise The dampers should be fully closed Turn the potenti ometer gradually counterclockwise until the de sired position is reached c Connect T and T1 to the 24V power supply d After installation is complete calculate the mini mum airflow across the economizer To calculatethe minimum airflow th
13. 44 Spark Adjustment 32 TROUBLESHOOTING Table 18 LED Error Code Service Analysis PROBLEM CAUSE REMEDY Hardware failure Loss of power to IGC Check 5 amp fuse on IGC power to unit 24 v circuit breaker and LED Off transformer Units without a 24 v circuit breaker have an internal over load in the 24 v transformer If the overload trips allow 10 minutes for automatic reset Limit switch fault High temperature limit switch Check the operation of the indoor evaporator fan motor Ensure that LED 2 Flashes is open the supply air temperature rise is in accordance with the range on the unit nameplate Flame sense fault The IGC sensed flame that Reset unit If problem persists replace control board LED 3 Flashes should not be present 4 consecutive limit switch trips Inadequate airflow to unit Check operation of indoor evaporator fan motor and that supply air LED 4 Flashes temperature rise agrees with range on unit nameplate information Ignition lockout Unit unsuccessfully attempted Check ignitor and flame sense electrode spacing gas etc Ensure that LED 5 Flashes ignition for 15 minutes flame sense and ignition wires are properly terminated Verify that unit is obtaining proper amount of gas Induced draft motor fault IGC does not sense that Check for proper voltage If motor is operating check the speed sensor LED 6 Flashes induced draft motor is operating plug IGC Terminal J2 connection Proper conne
14. 75 5 3 1240 10 10 Belt 2400 2 40 56 1120 1585 Ball al 2100 2 4 3 4 58 3 7 38 14 7 15 5 93 5 3 1305 95 EVAPORATOR COIL Rows Fins in Total Face Area sq ft FURNACE SECTION Rollout Switch Cutout Temp F Burner Orifice Diameter in drill size t Natural Gas Std Liquid Propane Alt Thermostat Heat Anticipator Setting amps 208 230 460 v Stage 1 Stage 2 Gas Input Btuh Stage 1 Stage 2 Efficiency Steady State 6 Temperature Rise Range F Manifold Pressure in wg Natural Gas Std Liquid Propane Alt Maximum Static Pressure in wg Gas Valve Quantity Field Gas Connection Size in HIGH PRESSURE SWITCH psig Standard Compressor Internal Relief Cutout Reset Auto LOSS OF CHARGE LOW PRESSURE SWITCH Liquid Line psig Cutout Reset Auto FREEZE PROTECTION THERMOSTAT Opens F Closes F OUTDOOR AIR INLET SCREENS Quantity Size in RETURN AIR FILTERS Quantity Size in LEGEND Bhp Brake Horsepower Indicates automatic reset 581B036072 072072 units have 2 burners 581B036115 072115 and 581B048150 072150 units have 3 burners Indicates an accessory Medium Heat 195 113 33 089 43 Enhanced Copper Tubes Aluminum Double Wavy Fins Acutrol Feed Device 2 15 4 15 4 5 5 Medium Heat 195 113 33 089 43 089 43 High Heat 195 129 30 102 38 14 14 120 000 150 000 5
15. Install this sediment trap by connecting a piping tee to riser leading to heating section so that straight through section of tee is vertical See Fig 11 Then con nect capped nipple into lower end of tee Extend capped nipple below level of gas controls 5 Install an accessible external manual main shut off valve in gas supply pipe within 6 ft of heating section 6 Install ground joint union dose to heating section be tween unit manual shutoff and external manual main shut off valve Pressure test all gas pipingin accordance with local and national plumbing and gas codes before connecting pip ing to unit NOTE When pressure testing the gas supply system after the gas supply piping has been connected to the unit gas valve the supply piping must be disconnected from the gas valve during any pressuretesting of the piping systems at test pres sure in excess of 0 5 psig When pressuretesting the gas sup ply piping system at test pressures equal to or less than 0 5 psig the unit heating section must be isolated from the gas piping system by closing the external main manual shut off valve and slightly opening the ground joint union After pressure test is completed retighten ground joint union 115 000 115 cubic ft hr 1 000 TEE OUT NIPPLE CAP Fig 11 Sediment Trap NCAUTION Unstable operation may occur when the gas valve and manifold assembly are forced out of po sition while c
16. Screens Clean screens with steam or hot water and a mild detergent Do not use disposable filters in place of screens LUBRICATION A Compressors Each compressor is charged with the correct amount of oil at the factory B Fan Motor Bearings Fan motor bearings are of the permanently lubricated type Nofurther lubrication is required Nolubrication of condenser or evaporator fan motors is required CONDENSER FAN ADJUSTMENT Fig 38 1 Shut off unit power supply 2 Remove condenser fan assembly grille motor motor cover and fan Loosen fan hub setscrews Adjust fan height as shown in Fig 38 Tighten setscrews Replace condenser fan assembly OU BU FAN HEIGHT 036 060 and 072 2 75 208 230 V 072 3 5 460 and 575 V Fig 38 Condenser Fan Adjustment IV ECONOMIZER ADJUSTMENT Refer to Optional Economizer sections on pages 13 and 14 V REFRIGERANT CHARGE Amount of refrigerant charge is listed on unit nameplate also refer to Table 1 Refer to GTAC2 5 Charging Recovery Re cyding and Redamation training manual and the following procedures Unit panels must be in place when unit is oper ating during charging procedure This unit uses a fixed orifice refrigerant metering device located in the coil header There is one orifice in each coil cir cuit The size of the orifice is stamped on the outside of the tube where the orifice is located Orifices are factory selected
17. Slide out burner compartment side panel 5 Remove heat shield 6 Disconnect gas piping at unit gas valve 7 Remove wires connected to gas valve Mark each wire 8 Remove induced draft motor ignitor and sensor wires 9 at the Integrated Gas Unit Controller IGC Remove the 2 screws that attach the burner rack tothe vestibule plate 10 Remove the gas valve bracket 11 Slide the burner tray out of the unit Fig 31 12 Toreinstall reverse the procedure outlined above B Cleaning and Adjustment 1 2 3 4 5 6 Remove burner rack from unit as described in Removal and Replacement of Gas Train section above Inspect burners if dirty remove burners from rack Using a soft brush dean burners and crossover port as required Adjust spark gap See Fig 44 Reinstall burners on rack Reinstall burner rack as described in Removal and Re placement of Gas Train section above XI REPLACEMENT PARTS A complete list of replacement parts may be obtained from your distributor upon request SEE DETAIL LOW HEAT 581B036072 581B072072 72 000 BTUH INPUT SEE DETAIL SEE DETAIL E MEDIUM AND HIGH HEAT 581B036115 5818072115 115 000 BTUH INPUT 581B048150 5818072150 150 000 BTUH INPUT SPARK DETAIL 7 SPARKER MUST POSITION TO IGNITE ON FIRST TRY REF PLACE SPARKER GAP WITHIN BURNER CIRCUMFERENCE AS SHOWN 4 60 IN DETAIL TE Fig
18. for gas meter test dial to make one revolution 4 Divide number of seconds in Step 3 into 3600 number of seconds in 1 hour 5 Multiply result of Step 4 by the number of cubicft shown for one revolution of test dial to obtain cubic ft of gas flow per hour 6 Multiply result of Step 5 by Btu heating value of gas to obtain total measured input in Btuh Comparethis value with heating input shown in Table 1 Consult the local gas supplier if the heating value of gas is not known EXAMPLE Assume that the size of test dial is 1 cubicft one revolution takes 33 seconds and the heating value of the gas is 1050 Btu ft then proceed as follows 1 33 seconds to complete one revolution 2 3600 33 109 3 109 x 1 109 ft of gas flow hr 4 109 x 1050 114 450 Btuh input If the desired gas input is 115 000 Btuh only a minor change in the manifold pressure is required Observe manifold pressure and proceed as follows to adjust gas input 1 Remove cover screw over regulator adjustment screw on gas valve See Fig 31 2 Turn regulator adjustment screw clockwise to increase gas input or turn regulator adjustment screw counter clockwise to decrease input Manifold pressure must be between 3 2 and 3 8 in wg on high fire two stage units A WARNING Unsafe operation of the unit may result if manifold pressure is outside this range Personal in jury or unit damage may result Replace cover screw cap on gas valve Turn off ga
19. not on Check wiring between G on connection board and indoor fan contactor No power to economizer motor Disconnect power at TR and TR1 Disconnect jumper across P and P1 Connect jumper across TR and 1 Connect jumper across T1 and T If connected remove enthalpy sensor from terminals and Factory installed 620 ohm resistor should be connected to terminals Sp and Apply power 24 vac to terminals TR and TR1 The LED should be off and the damper should be in the closed position Disconnect the factory installed 620 ohm resistor from terminals Sg and The LED should light up and the motor should drive towards open If this does not happen replace the economizer control module Economizer motor failure If the indoor fan and economizer motor are energized verify that there is a minimum of 24 vac at terminals TR and TR1 If the motor is not operating replace the motor Economizer operation Economizer control module 1 To simulate high or low enthalpy reconnect the factory installed 620 ohm limited to minimum failure resistor across terminals and position 2 Connect 1 2 checkout resistor across terminals and Turn the enthalpy set point to A The LED should turn on indicating low en thalpy The motor should drive towards open If LED does not light re place module If motor does not drive open check motor operation Turn the enthalpy set point to D The LED should turn off i
20. of condenser coil Carefully separate the outer Coil section 3 to 4 in from the inner coil section See Fig 37 6 Use a water hose or other suitable equipment to flush down between the 2 coil sections to remove dirt and de bris Clean the outer surfaces with a stiff brush in the normal manner 7 Secure inner and outer coil rows together with a field supplied fastener 8 Reposition the outer coil section and remove the coil cor ner post from between the top panel and center post 9 Reinstall the coil corner post and replace all screws C Condensate Drain Check and clean each year at start of cooling season In win ter keep drain dry or protect against freeze up 28 REMOVE REMOVE SCREWS SCREWS TOP REMOVE CONDENSER CONTROL POST PANEL SCREWS CORNER POST COIL CENTER POST REMOVE SCREWS COMPRESSOR ACCESS CONDENSER REMOVE COIL PANEL COIL CORNER POST Fig 35 Cleaning Condenser Coil COIL CORNER CENTER BAFFLE TOP PANEL POST 4 COMPRESSOR ACCESS PANEL CONDENSER COIL Fig 36 Propping Up Top Panel TOP VIEW TOP PANEL CENTER BAFFLE CONDENSER COIL INNER COIL SECTION OUTER COIL SECTION HAIRPIN END Fig 37 Separating Coil Sections D Filters Clean or replace at start of each heating and cooling season or more often if operating conditions require it Replacement filters must be same dimensions as original filters E Outdoor Air Inlet
21. panel Remove from shipping location and using screws provided install flue hood in location shown in Fig 2 and 9 CONDENSATE PAN CONDENSATE FACTORY INSTALLED DRAIN PLUG LOCATION NOTE Drain plug is shown in factory installed position Fig 7 Condensate Drain Pan MINIMUM PITCH 1IN PER 10 FT OF LINE TO ROOF DRAIN DRAIN PLUG NOTE Trap should be deep enough to offset maximum unit static dif ference A 4 in trap is recommended Fig 8 External Trap Condensate Drain lt lt lt INTAKE LOUVERS FLUE OPENING Fig 9 Flue Hood Details For units being installed in California Air Quality Manage ment Districts which require NO emissions of 40 nanograms joule or less kit CRLOWNOX001A00 must be installed C Gas Piping Fig 10 Unit is equipped for use with type of gas shown on nameplate The gas supply pipe enters the unit through the access hole provided The gas connection to the unit is made to the in female NPT gas inlet on the manual shutoff or gas valve Install a separate gas supply linethat runs directly from the meter to the heating section Refer to Table 2 and the NFGC for gas pipe sizing Do not use cast iron pipe Check the local utility for recommendations concerning existing lines Choose a supply pipe that is large enough to keep the pressure loss as low as practical Never use pipe smaller than the 2 in fe male gas inlet th
22. regulator and the appliance Pipe size is determined by the length of the pipe run and the to tal load of all appliances Contact your LP gas supplier or regulator manufacturer for further details regarding tank sizing recommended regula tor settings and pipe sizing Special pipe compound must be used when assembling pip ing for liquid propane gas as white lead or commercial com pounds will be easily dissolved Use a shellac based compound suitable for use with LP D Field Duct Connections NOTE The design and installation of the duct system must be in accordance with the standards of the NFPA for the in stallation of nonresidence type air conditioning and ventilat ing systems NF PA No 90A or residence type NFPA No 90B and or local codes and ordinances Adhere to the following criteria when selecting sizing and installing the duct system 1 Remove appropriate panels from unit to obtain either a horizontal or vertical application If units are installed for horizontal applications remove vertical duct covers save screws and install covers on vertical duct openings 2 Select and size ductwork supply air registers and return air grilles according to ASHRAE American Society of Heating Refrigeration and Air Conditioning Engi neers recommendations CAUTION DO NOT DRILL OR 50 18 5 INSERT SCREWS IN SHADED AREA INLET OUTLET PANEL Fig 12 Location of Coil Area Not To Be Drilled A CAUTION When
23. the duct system fastening holes are being drilled into the side of the unit for duct flanges be careful not to puncture the coil or coil tubes See Fig 12 3 Use flexible transition between rigid ductwork and unit to prevent transmission of vibration The transition may be screwed or bolted to duct flanges Use suitable gas kets to ensure weather and airtight seal 4 When horizontal return is used install external field supplied air filters in return air ductwork where they are easily accessible for service Recommended filter sizes are shown in Table 1 5 For horizontal applications be sure ductwork does not cover nameplate 6 Size all ductwork for maximum required airflow either heating or cooling for unit being installed Avoid abrupt duct size increases or decreases 7 Adequately insulate and weatherproof all ductwork lo cated outdoors Insulate ducts passing through uncon ditioned space and use vapor barrier in accordance with latest issue of SMACNA Sheet Metal and Air Condi tioning Contractors N ational Association and ACCA Air Conditioning Contractors of America minimum instal lation standards for heating and air conditioning sys tems Secure all ducts to building structure 8 Flash weatherproof and vibration isolate all openings in building structure in accordance with local codes and good building practices E Electrical Connections A WARNING The unit cabinet must have an uninter rupted un
24. to 45 F the switch resets and the compressor is allowed to restart IV INDOOR AIRFLOW AND AIRFLOW ADJUSTMENTS A CAUTION For cooling operation the recommended airflow is 300 to 500 cfm per each 12 000 Btuh of rated cooling capacity F or heating operation the airflow must produce a temperature rise that falls within the range stamped on the unit rating plate Adjust evaporator fan speed to meet jobsite conditions and temperature rise in Table 1 Table 7 shows fan rpm at motor pulley settings Table 8 shows evaporator fan motor per formance Refer to Tables 9 16 to determine fan speed settings A Belt Drive Motors Fan motor pulleys are factory set for speed shown in Table 1 Check pulley alignment and belt tension prior to start up NOTE Before adjusting fan speed make sure the new fan speed will provide an air temperature rise range as shown in Table 1 To change fan speed 1 Shut off unit power supply 2 Loosen belt by loosening fan motor mounting nuts See Fig 33 3 Loosen movable pulley flange setscrew see Fig 34 4 Screw movableflangetoward fixed flangeto increase speed and away from fixed flange to decrease speed ncreas ing fan speed increases load on motor Do not exceed maxi mum speed specified in Table 1 5 Set movable flange at nearest keyway of pulley hub and tighten setscrew See Table 1 for speed change for each full turn of pulley flange To align fan and motor pulleys 1
25. using curb is 1 inch bottom of base rail when not using curb is inches Minimum clearance on all sides to block walls or any other grounded surface is 42 inches Between unit and ungrounded surfaces control box side is 36 inches between units control box side is 42 inches ii SERVICE CLEARANCE OPERATIONAL CLEARANCE Fig 3 Service and Operational Clearances Minimum clearance of condenser coil is 36 in on one side 12 in the other Side getting greater clearance is optional Minimum distance overhead is 60 inches Locate the unit where the vent cap will be a minimum of 4 ft from openable windows and doors Do not install unit in an indoor location Do not locate unit air inlets near exhaust vents or other sources of contami nated air Be surethat unit is installed so that snow will not block the combustion intake or flue outlet Although unit is weatherproof guard against water from higher level runoff and overhangs Slab mounted units should be at least 4 in above the highest expected water flood and runoff levels Do not use the unit if it has been under water Locate mechanical draft system flue assembly at least 48 in from any opening through which combustion products could enter the building and at least 24 in from an adjacent build ing When unit is located adjacent to public walkways flue assembly must be at least 7 ft above grade Flue gas can deteriorate building materials
26. 015416 AIR 97 w VERTICAL 2781 dco FACTORY SUPPLIED 1 uc ME 3 B FLUE HD 2 1 e iH 2 N LX ie eee ee ZZ 11144 T feo T 2 9 5 16 CONDENSER COIL M P ALT CONDENSATE De 9 16 845 5 17 4 5 16 NING 414 5 CC ues IN BASEPAN SUPPLY AIR SUPPLY 2 176 21 OPENING BOTTOM vd VERTICAL n Je NSS 0 1 15 16 1533 PER 1492 0 B 5 8 0 7 1 2 0 3 5 16 1168 2 gia 7 Ge T d j BOTTOM POWER SEE NOTE 8 FRONT 07 4 9 16 7 CORNER pt CHART ELEC ONLY vu CU N ELECTRICAL lS 2 11 11 16 0 3 16 J 1 0 10167 0 3 3 15 CORNER C 165 DISCONNECT 19051 78 3061 1817 LEFT STOE SLOGANON ER 8 1 11 16 11872 0 7 1 47 0 4 1 16 m 103 2 FILTER ACCESS PANEL DISPOSABLE FILTERS CONTROL BOXA CONE RE SSOR BURNER ACCESS ESN RD HOOD FILTER 17 6 7 16 652 5 46 EVAPORATOR FAN MOTOR amp BLOWER ACCESS Cu Ei ERE PANEL TT 84 N 0 1 7 8 SUPPLY AIR RI 7 Z E 1301 6 07 3 5 16 I HORIZONTAL OUTSIDE AIR 191 03 i i a ume Si 0 B 1 8 2564 27 5 3 8 4 1 RN gt 246 21 o net TREK EUIS gd 658 6 tags 0 2 1 4 DIA OUTSIDE KaM SUPPLY AIR FRONT PLACES OR PANEL RIGHT SIDE E STD CONDENSATE DRAIN Fig 2 Base Unit Dimensions 2 923 INSTALLATION Unit is shipped in the vertical airflow configuration See Fig 1 To convert to horizontal discharge remove h
27. 3 black wire If 24 vac not present check unit wiring see unit label diagram If 24 vac is found in both places check for 24 vac at the yellow terminal of the econo mizer control board yellow wire If 24 vac power is not present replace the economizer control board Economizer motor failure If the indoor evaporator fan and economizer motor are energized verify that there is a minimum of 18 at the positive motor terminal If the motor is not operating replace the motor Economizer operation OAT or EC set too high 1 Set at correct temperature 3 F below indoor space temperature limited to minimum 2 Check OAT or EC by setting above outdoor temperature or humidity level position If the OAT or EC switches do not close replace OAT or EC Economizer control board 1 Perform the following tests when OAT or EC is closed Y1 is called for and incorrectly wired or not damper is at minimum position Confirm 24 vac on gray terminal of the functioning economizer control board gray wire If 24 vac is not present check wiring see unit label diagram 2 Verify that SW1 and SW3 are wired correctly and working properly see unit label diagram 3 Check to ensure that 24 vac exists at PL6 2 blue wire If 24 vac is not present check wiring see unit wiring label diagram 4 Check 24 vac output at PL6 10 white wire If 24 vac is not present replace economizer control board Incorrect SAT wiring or in 1 After verifyi
28. 5 Medium Heat 195 113 33 089 43 089 43 3 5 5 5 30 45 High Heat 195 129 30 102 38 44 44 120 000 150 000 5 5 Medium Heat 195 113 33 089 43 High Heat 195 129 30 102 38 44 44 120 000 150 000 Cleanable 1 20 x 24x 1 Throwaway 2 16 x 25 x2 IV FIELD CONNECTIONS A External Trap Condensate Drain The unit s in condensate drain connections are located at the bottom and side of the unit Unit discharge connec tions do not determine the use of drain connections either drain connection can be used with vertical or horizontal applications When using the standard side drain connection make sure the plug in the alternate bottom connection is tight before installing the unit To use the bottom drain connection for a roof curb installa tion relocate the factory installed plug from the bottom con nection to the side connection See Fig 7 The piping for the condensate drain and external trap can be completed after the unit is in place All units must have an external trap for condensate drain age Install a trap at least 4 in deep and protect against freeze up See Fig 8 If drain line is installed downstream from the external trap pitch the line away from the unit at 1 in per 10 ft of run Do not use a pipe size smaller than the unit connection B Install Flue Hood Flue hood is shipped screwed to the burner compartment ac cess
29. ARABLADE Economizer The optional PARABLADE economizer hood assembly is pack aged and shipped in the filter section Damper blades and control boards are installed at the factory and the econo mizer is shipped in the vertical discharge position NOTE Horizontal discharge block off plate is shipped with the air hood package The PARABLADE economizer can only be used for vertical discharge applications Discard this plate Assembly 1 Determine if ventilation air is required in building If so determine the minimum amount to be supplied by each unit and record quantity of ventilation air needed for use in Step 6 2 Remove filter access panel by raising panel and swing ing panel outward Panel is now disengaged from track and can be removed No tools are required to remove filter access panel Remove outdoor air opening panel 14 OUTDOOR z THERMOSTAT OR ACCESSORY ENTHALPY CONTROL TERMINALS OUTDOOR AIR THERMOSTAT TERMINALS ARE UP HOOD ENTHALPY CONTROL HOOD Fig 23 Outdoor Air Thermostat Enthalpy Control Installation OAT Gray ame LEGEND OAT Outdoor Air Thermostat NOTE PRESSURE DROP in wg See unit wiring diagram for details Fig 24 Wiring Connections for Outdoor Air Thermostat 0 30 0 25 0 20 0 15 0 10 0 05 0 00 50 100 150 200 250 300 350 400 450 500 550 CFM Fig
30. B On 3 phase units voltages be run in same conduit as high voltage wires tween phases must be balanced within 2 and the cur 5 Donot damageinternal components when drilling through rent within 1096 Use the formula shown in Tables 3A any panel to mount electrical hardware conduit etc and 3B Note 2 to determine the percent voltage im balance Operation on improper line voltage or exces sive phase imbalance constitutes abuse and may cause damage to electrical components Such operation would invalidate any applicable warranty NOTE If accessory thru the bottom connections and roof curbs are used refer the Thru the Bottom Installation Instruc tions for information on power wiring e BLK s TO COMP O 090 6 5 OROS na mi 1 1 li 1 1 eS i ee T EN a mii ty plo T FIELD POWER SUPPLY Bc tud FIELD POWER SUPPLY P LaL LL 208 230 1 60 5 1 575 3 60 F DISCONNECT SIZE 581B036 060 L PER SIZE 581B036 060 _ _ BLK 2 2 TO TB2 1 2 ve pve SP 1 BLU 1 oal i F ee 14 post Zr GY C Contactor TE pr COMP Compressor EQUIP Equipment 1 rg FIELD POWER SUPPLY GND Ground rt 5753 88 IFC Indoor Evaporator Fan NN in DISCONNECT Contactor 208 230 3 60 FIELD POWER SUPPLY SIZE 5818072 PERNEC NEC National Electrical Code 460 3 60
31. Btu ft at 1 5 specific gravity For elevations above 2000 ft reduce input 4 for each 1000 ft above sea level When the gas supply being used has a different heating value or specific gravity refer to national and local codes or contact your distributor or branch to determine the required orifice size Refer to Table 6 for the correct orifice to use at high al titudes Kits are available from your distributor E Adjusting Gas Input The gas input to the unit is determined by measuring the gas flow at the meter or by measuring the manifold pressure Measuringthe gas flow at the meter is recommended for natu ral gas units The manifold pressure must be measured to determine the input of propane gas units Measuring Gas Flow at Meter Method Natural Gas Units Minor adjustment can be made by changing the manifold pres sure The manifold pressure must be maintained between 3 2 and 3 8 in wg on high fire two stage units If larger adjust ments are required change main burner orifices following the recommendations of national and local codes NOTE other appliances that use the same meter must be turned off when gas flow is measured at the meter Proceed as follows 1 Turn off gas supply to unit 2 Remove pipe plug on outlet of gas valve or manifold then connect manometer at this point Turn on gas to unit 18 Table 5 Rated Gas Inputs at Indicated Manifold Pressures GAS SUPPLY PRESSURE in wg M
32. E PLATE 1 4 13 16 4271 0 0 1 4 t7 4 INSIDE af s N 0 4 9 16 1163 1 1 SUPPLY AIR RETURN AIR N AANS V m T VIEW N HEAD OF BOLT TO BE ON INSIDE OF FLANGE 5 7 1 8 17051 3 0 15 16 938 RATE A 4 e ALL CORNERS SEE VIEW 7 7 2 Fig 4 Roof Curb Dimensions Ze MAXIMUM ALLOWABLE DIFFERENCE in Fig 5 Unit Leveling Tolerances Il UNIT DUCT CONNECTIONS On vertical units secure all ducts to roof curb and building structure Do not connect ductwork to unit On horizontal units duct flanges should be attached to horizontal openings and all ductwork should be secured to flanges Insulate and weath erproof all external ductwork joints and roof openings with counter flashing and mastic in accordance with applicable codes Ducts passing through an unconditioned space must be in sulated and covered with a vapor barrier If a plenum return is used on a vertical unit the return should be ducted through the roof deck to comply with applicable fire codes A minimum dearance is not required around ductwork Cabinet return air static shall not exceed 0 35 in wg with Varislide economizer 0 35 in wg with PARABLADE econo mizer or 0 45 in wg without economizer 36 54 914 1371 SEE DETAIL NOTES 1 Dimension in are in millimeters 2 Hook rigging shackles through holes in base
33. LE Supply voltage is 460 3 60 96 Voltage Imbalance 100 x B 452 v 464 v 455 v P Average Voltage 292 x 494 499 z I1 3 457 Determine maximum deviation from average voltage 457 452 5v BC 464 457 2 7 v AC 457 455 2v Maximum deviation is 7 v Determine percentage of voltage imbalance Voltage Imbalance 100 x 1 53 This amount of phase imbalance is satisfactory as it is below the maximum allowable 2 IMPORTANT If the supply voltage phase imbalance is more than 296 contact your local electric utility company immediately 3 575 v units are CUL approved only 457 Pass control wires through the hole provided in the corner post then feed wires through the raceway built into the cor ner post to the 24 v barrier located on the left side of the con trol box See Fig 15 The raceway provides the UL required clearance between high and low voltage wiring Connect thermostat wires to pigtails of low voltage circuit in low voltage section on control box using wirenuts Table 4 Thermostat List TYPE Manual Changeover Standard 2 Heat 2 Cool Auto Changeover Standard 2 Heat 2 Cool Manual Changeover Electronic Setback 2 Heat 2 Cool Auto Changeover Electronic Setback 2 Heat 2 Cool See Trade Prices for part numbers Heat Anticipator Setting The room thermostat heat anticipator must be properly ad justed to ensure prop
34. ON LINE TEMPERATURE F 4 10 16 21 SUCTION LINE TEMPERATURE C PSIG fy PSIO ep SUCTION LINE PRESSUR 40 50 70 80 SUCTION LINE TEMPERATURE F 4 10 16 21 SUCTION LINE TEMPERATURE C Fig 42 Cooling Charging Chart 581B072 Slide the motor and blower wheel assembly out of the blower housing The blower wheel can be cleaned at this point If additional cleaning is required continue with steps 5 and 6 To remove blower from the motor shaft remove 2 setscrews To remove motor remove 4 screws that hold the motor to mounting plate Remove the motor cooling fan by removing one setscrew Then remove nuts that hold motor to mounting plate Toreinstall reverse the procedure outlined above INDUCED ROLLOUT DRAFT SWITCH MOTOR MOUNTING PLATE EXHAUST mE Br m T EXE esl M t INDUCED ae ALF b MOTOF LM al BLOWER MOTOR gt HOUSING MANIFOLD e PRESSURE 2 GAS TAP See VALVE Fig 43 Burner Section Details IX LIMIT SWITCH Remove blower access panel Fig 2 Limit switch is located on the fan deck X BURNER IGNITION Unit is equipped with a direct spark ignition 100 lockout system Integrated Gas Unit Controller IGC is located in the control box Fig 15 The IGC contains a self diagnostic LED light emitting diode A single LED on the IGC pro vides a visual display of operational or
35. Orient unit such that flue gas will not affect building materials Adequate combustion air space must be provided for proper operation of this equipment Be sure that installation com plies with all local codes Flue vent discharge must have a minimum horizontal clear ance of 4 ft from electric and gas meters gas regulators and gas relief equipment B Roof Curb Mount Assemble and install accessory roof curb in accordance with instructions shipped with curb See Fig 4 Install insulation cant strips roofing felt and counter flashing as shown Duct work must be attached to curb If gas electric power or con trol power is to be routed through the curb attach the utility connection plates to the roof curb in accordance with the ac cessory installation instructions Accessory electric and gas utility connection plates must be installed before unit is in place on roof curb IMPORTANT The gasketing of the unit to the roof curb is critical for a watertight seal Install gasket with the roof curb as shown in Fig 4 Improperly applied gasket can also result in air leaks and poor unit performance Curb should be level This is necessary for unit drain to func tion properly Unit leveling tolerances are shown in Fig 5 C Slab Mount Horizontal Units Only Provide a level concrete slab that extends a minimum of 6 in beyond unit cabinet Install a gravel apron in front of condenser coil air inlet to prevent grass and foliage f
36. PLY AIR PRESSURES GAS INLET PRESSURE GAS MANIFOLD PRESSURE REFRIGERANT SUCTION REFRIGERANT DISCHARGE Copyright 1998 Bryant Heating amp Cooling Systems VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT REMOVE ALL SHIPPING HOLDDOWN BOLTS AND BRACKETS PER INSTALLATION INSTRUCTIONS VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS CHECK GAS PIPING FOR LEAKS CHECK THAT INDOOR AIR FILTER IS CLEAN AND IN PLACE VERIFY THAT UNIT INSTALLATION IS LEVEL CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING ORIFICE AND SETSCREW L2 L3 L3 L1 L2 L3 L2 L3 DB DB WB IN WG IN WG HI FIRE PSIG PSIG VERIFY REFRIGERANT CHARGE USING CHARGING TABLES VERIFY THAT 3 PHASE SCROLL COMPRESSOR ROTATING IN CORRECT DIRECTION CL 1 CATALOG NO 5358 100 CUT ALONG DOTTED LINE CUT ALONG DOTTED
37. W3 Replace original wire with type 90 C wire or its equivalent Three phase motors are protected under primary single phasing conditions Use thermostats HH07AT170 172 Subbases HH93AZ176 177 178 and 179 Set heat anticipator at 14 amp for first stage and 14 amp for second stage Use copper conductors only TRAN is wired for 230 V unit If unit is to be run with 208 V power supply disconnect Supply Air Thermostat Sensor Switch Fully Open Switch Fully Closed Switch Minimum Vent Position Switch Maximum Vent Position Thermostat Cooling Thermostat Heating Transformer Field Splice Marked Wire Terminal Marked Terminal Unmarked Terminal Block Splice Factory Wiring Field Control Wiring Field Power Wiring Accessory or Optional Wiring To indicate common potential only not to represent wiring BLK wire from 230 V tap and connect to 208 V tap RED Insulate end of 230 V tap Copyright 1998 Bryant Heating amp Cooling Systems CATALOG NO 5358 100 1 PRELIMINARY INFORMATION MODEL DATE START UP CHECKLIST Remove and Store in Job File SERIAL NO TECHNICIAN PRE START UP insert checkmark in box as each item is completed TIGHTNESS Ill START UP ELECTRICAL SUPPLY VOLTAGE L1 L2 COMPRESSOR AMPS L1 INDOOR FAN AMPS L1 TEMPERATURES OUTDOOR AIR TEMPERATURE RETURN AIR TEMPERATURE COOLING SUPPLY AIR GAS HEAT SUP
38. al Fire Protection Association 54 TIA 54 92 1 In Canada installation must conform with CAN CGA Canadian Gas Association B 149 1 2 M86 Refer to Pro vincial and local plumbing or wastewater codes and other applicable local codes 6 Approved for outdoor installation on wood flooring or on dass A B or C roof covering materials STANDARD VARISLIDE CORNER CORNER CORNER CORNER UNIT ECONOMIZER WEIGHT WEIGHT WEIGHT WEIGHT WEIGHT WEIGHT B Lb Kg 138 Dia 35 Field Power Supply Hole C 7 amp Dia 22 Field Control Wiring Hole 34 14 NPT Condensate Drain 1 14 NPT Gas Connection 212 Dia 64 Power Supply Knock Out 15 4 134 60 8 34 15 4 147 66 7 NOTES 1 Dimensions in are in millimeters BOTTOM POWER CHART 2 Center of Gravity THESE HOLES REQUIRED FOR zc USE WITH ACCESSORY PACKAGES 3 E Direction of airflow CRBTMPWROO01 A00 v2 34 4 On vertical discharge units ductwork to be attached to accessory THREADED roof curb only For horizontal discharge units field supplied flanges CONDUIT WIRE REQUIRED SIZES should be attached to horizontal discharge openings and all duct SIZE USE MAXIMUM work should be attached to the flanges Minimum clearance local codes or jurisdiction may prevail 74 22 2 a Between unit flue side and combustible surfaces 48 inches 1 28 4 b Bottom of unit to combustible surfaces when not using curb 1 inch Botto
39. ates a condition that could result in personal injury Caution is used to identify unsafe practices which would result in minor personal injury or product and property damage NWARNING Disconnect gas piping from unit when leak testing at pressure greater than 0 5 psig Pressures greater than 0 5 psig will cause gas valve damage re sulting in hazardous condition If gas valve is subject to pressure greater than 0 5 psig it must be replaced before use When pressure testing fiel d supplied gas pip ing at pressures of 0 5 psig or less a unit connected to such piping must be isolated by manually dosing the gas valve A WARNING Before performing service or mainte nance operations on unit turn off main power switch to unit Electrical shock could cause personal injury 1 The power supply volts hertz and phase must corre spond to that specified on unit rating plate 2 Theelectrical supply provided by the utility must be suf ficient to handle load imposed by this unit 3 Refer to the Locate the Unit section on page 3 and Fig 2 for locations of gas and electrical inlets conden sate drain duct connections and required clearances be fore setting unit in place 4 Locate the unit where the vent cap will be a minimum of 4 ft from openable windows or doors 5 Thisinstallation must conform with local building codes the NFGC National Fuel Gas Code ANSI American National Standards Institute 2223 1 1992 and Nation
40. broken electrical ground to minimize the pos sibility of personal injury if an electrical fault should occur This ground may consist of electrical wire con nected to the unit ground lug in the control compart ment or conduit approved for electrical ground when installed in accordance with the NEC National Elec trical Code ANSI NFPA latest edition in Canada Canadian Electrical Code CSA Canadian Standards As sociation C22 1 and local electrical codes Do not use gas piping as an electrical ground Failure to adhere to this warning could result in personal injury A CAUTION Failure to follow these precautions could result in damage to the unit being installed Field Power Supply Fig 13 15 1 Makeall electrical connections in accordance with NEC ANSI NFPA latest edition and local electrical codes gov erning such wiring In Canada all electrical connec tions must be in accordance with CSA standard C22 1 Canadian Electrical Code Part 1 and applicablelocal codes Refer to unit wiring diagram 2 Useonly copper conductor for connections between field supplied electrical disconnect switch and unit DO NOT USE ALUMINUM WIRE Maximum wire size is no 2 AWG American Wire 3 Voltage to compressor terminals during operation must 4 Insulate low voltage wires for highest voltage con be within voltage range indicated on unit nameplate also tained within conduit when low voltage control wires are see Tables 3A and 3
41. ction PIN 1 White PIN 2 Red PIN 3 Black Rollout switch fault Rollout switch has opened Rollout switch will automatically reset but IGC will continue to lock out LED 7 Flashes unit Check gas valve operation Ensure that induced draft blower wheel is properly secured to motor shaft Reset unit at unit disconnect Internal control fault Microprocessor has sensed an If error code is not cleared by resetting unit power replace the IGC LED 8 Flashes error in the software or hardware LEGEND IMPORTANT Refer to Table 19 Heating Service Analysis for ad IGC Integrated Gas Unit Controller ditional troubleshooting analysis LED Light Emitting Diode A WARNING If the IGC must be replaced be sure to ground yourself to dissipate any electrical charge that may be present before handling new control board The IGC is sensitive to static electricity and may be damaged if the necessary precautions are not taken Table 19 Heating Service Analysis PROBLEM CAUSE REMEDY Burners will not Misaligned spark electrodes Check flame ignition and sensor electrode positioning Adjust as needed ignite No gas at main burners Check gas line for air purge as necessary After purging gas line of air allow gas to dissipate for at least 5 minutes before attempting to relight unit Check gas valve Check power supply fuses wiring and circuit breaker Check transformer Transformers with internal overcurrent protection require a cool
42. ctronic leak detector halide torch or liquid soap solution If refrigerant leak is de tected see Refrigerant Leaks section page 30 c Inspect all field and factory wiring connections Be sure that connections are completed and tight d Inspect coil fins If damaged during shipping and han dling carefully straighten fins with a fin comb 4 Verify the following conditions Z DANGER Do not purge gas supply into the com bustion chamber Do not usea match or other open flame to check for gas leaks Failure to adhere to this warn ing could result in an explosion causing personal in jury or death Makesure that gas supply has been purged and that all gas piping has been checked for leaks b Make sure that condenser fan blade is correctly po sitioned in fan orifice Blades should clear fan motor and fan orifice ring c Make sure that correct air filters are in place See Table 1 Do not operate unit without return air filters d Make sure that condensate drain pan and trap are filled with water to ensure proper drainage e Make sure that all tools and miscellaneous loose parts have been removed f Make sure outdoor air inlet screen is in place 5 Compressors are internally spring mounted Do not loosen or remove compressor holddown bolts 6 Each unit system has 4 Schrader type gage ports one on the suction line one on the compressor discharge line and two additional Schrader valves located under t
43. e following data is needed total cfm cfm4 temperature of the total cfm T3 temperature of the return air T and tempera ture of the entering outside air T4 Cfm is the outside air cfm which will bethe minimum airflow Insert the data into the following equations T4 cfm cfm cfm i cfm cfm cfm Therefore T4 dm T cfm cfm T dm ECONOMIZER CONTROL WIRING MODULE DAMPER ENTHALPY BAROMETRIC HARNESS ACTUATOR SENSOR RELIEF DAMPER Fig 26 PARABLADE Economizer Installed in Unit CONTROL CURVE CONTROL POINT APPOX DEG AT 50 RH 95 100 105 110 29 5 32 35 38 40 5 43 5 INN i ue L gt SL AOX de ap X CZ 75 SZ LN ZS Ec ZN CX ZXZ lt Bick ZA vA Z WAS X Z2 Y m ZZN 105 5 5 1 15 45 7 10 13 15 5 18 5 21 24 26 5 29 5 32 35 38 40 DRY BULB TEMPERATURE APPROXIMATE FAHRENHEIT CELSIUS IN 90 Fig 27 Enthalpy Settings for PARABLADE Economizer 16 Use this equation to determine cfm which is the minimum airflow across the economizer T4 gt cfm T4 T3 If cfm does not match the desired minimum air flow from Step 1 readjust the minimum position setting screw Determine the enthalpy changeover set point from Fig 27 The enthalpy changeover set point should be set to
44. e unit gas valve For natural gas applications the gas pressure at unit gas con nection must not be less than 4 in wg or greater than 13 in wg while the unit is operating On 581B048 060 072 high heat units the gas pressure at unit gas connection must not be less than 5 in wg or greater than 13 in wg while the unit is operating For propane applications the gas pressure must not be less than 5 in wg or greater than 13 in wg at the unit connection Imc X 9 MINIMUM CLEARANCE FOR PANEL REMOVAL MANUALGAS GAS SHUTOFF VALVE REGULATOR 48 MINIMUM e DRIP LEG PER NFGC ROOF CURB BASE RAIL FIELD FABRICATED 4 SUPPORT FROM GAS METER LEGEND NFGC National Fuel Gas Code Field Supplied NOTE Follow all local codes STEEL PIPE NOMINAL SPACING OF SUPPORTS DIAMETER in X DIMENSION ft 6 8 Vo 3A or 1 1 or Larger 10 Fig 10 Gas Piping Guide With Accessory Utility Connections Package Table 2 Maximum Gas Flow Capacity of Pipe in Cubic Ft of Gas Per Hour for Gas Pressures of 0 5 Psig or Less and a Pressure Drop of 0 5 in wg Based on a 0 60 Specific Gravity Gas NOMINAL IRON PIPE INTERNAL DIAMETER REE Lor E LENGTH OF PIPE FT 80 90 125 150 175 15 120 97 a2 73 66 61 57 53 soj 44 4 i 140 950 770 600 580 530 490 460 430 400 360 325 300 280 2100 1460 1180 eso eoo
45. ed tested and factory sealed NOTE Adjustment of the refrigerant charge is not required unless the unit is suspected of not having the proper R 22 charge This unit uses charging charts to determine proper charge See Refrigerant Charge section on page 29 for fur ther details C Unit Controls All compressors have the following internal protection controls High PressureRdief Valve This valve internal to the compressor opens when the pressure differential be tween the low and high side becomes excessive and will automatically reset when pressure returns to normal 2 Compressor Overload This overload interrupts power to the compressor when either the current or internal temperature become excessive and automatically re sets when the internal temperature drops to a safe level This overload may require up to 60 minutes or longer to reset therefore if the internal overload is suspected of being open disconnect the electrical power tothe unit and check the circuit through the overload with an ohm meter or continuity tester D Cooling Sequence of Operation Cooling Units Without Economizer When thermostat calls for cooling terminals G and Y1 and the compressor contactor are energized The indoor evapo rator fan motor IF M compressor and outdoor condenser fan motor OF M start The OFM runs continuously while the unit isin cooling When thethermostat is satisfied 1 1 deen ergized and the compres
46. equired using a wire brush Vill COMBUSTION AIR BLOWER Clean periodically to ensure proper airflow and heating effi ciency Inspect blower wheel every fall and periodically dur ing heating season F or the first heating season inspect blower wheel bimonthly to determine proper cleaning frequency SUCTION LINE PRESSURE KILOPASCALS H H2HHEHHHAHHHHHHHHHHHHHHHHHRHHHH LITTTTI 40 50 60 70 SUCTION LINE TEMPERATURE F 4 10 16 21 SUCTION LINE TEMPERATURE C o ESSURE PSIG aN SUCTION LIN I 214 Ama ea T T I Li L1 H 8 a E g Li N amp E H E x Li t sed boo 8 70 4 E H C Z L1 Li gt 5 2 S H gt Li Li Li Li SUCTION LINE TEMPERATURE F 4 10 16 21 SUCTION LINE TEMPERATURE C Fig 40 Cooling Charging Chart 581B048 Toinspect blower wheel remove draft hood and screen Shine a flashlight into opening to inspect wheel If deaning is re quired remove motor and wheel as follows 1 Slide burner access panel out 2 Removethe 2 screws which hold the heat shield in place and remove heat shield 3 Remove the 7 screws that attach induced draft motor mounting plate to blower housing Fig 43 30 SUCTION LINE PRESSURE KILOPASCALS a N 4 lt U lt a eo a v 4 2 2 c a 2 f z o us e 2 N 40 50 60 70 SUCTI
47. er heating performance Set the heat anticipator using an ammeter to determine the exact re quired setting NOTE For thermostat selection purposes use 14 amp for the approximate required setting Set heat anticipator stage 1 and 2 at 14 amp Failure to make a proper heat anticipator adjustment may result in improper operation discomfort to the occupants of the conditioned space and inefficient energy utilization how ever the required setting may be changed slightly to provide a greater degree of comfort for a particular installation F Accessory Installation At this time any required accessories should be installed on the unit Control wiring information is provided in the unit wiring book Refer to accessory nstallation Instructions vided with accessory G Optional Varislide Economizer The optional economizer hood assembly is packaged and shipped in the filter section Damper blades and control boards are installed at the factory and the economizer is shipped in the vertical discharge position NOTE Horizontal discharge block off plate is shipped with the air hood package If unit is to be used for vertical dis charge application discard this plate Assembly 1 Determine if ventilation air is required in building If so determine the minimum amount to be supplied by each unit and record quantity of ventilation air needed for use in Step 7 2 Remove filter access panel by raising panel and swing
48. for optimum performance and are not designed to be changed in the field To determine if an orifice has become plugged disconnect power to the evaporator fan motor and start the unit in cooling Observe the coil for an uneven frost pattern indicating a plugged orifice A No Charge Use standard evacuating techniques After evacuating sys tem weigh in the specified amount of refrigerant Refer to Table 1 29 B Low Charge Cooling Using Cooling Charging Charts Fig 39 42 vary refrigerant until the conditions of the appropriate chart are met Note the charging charts are different from type normally used Charts are based on charging the units to the correct super heat for the various operating conditions Accurate pressure gage and temperature sensing device are required Connect the pressure gagetothe service port on the suction line Mount the temperature sensing device on the suction line and insu late it so that outdoor ambient temperature does not affect the reading ndoor air cfm must be within the normal oper ating range of the unit C To Use Cooling Charging Charts Take the outdoor ambient temperature and read the suction pressure gage Refer to appropriate chart to determine what suction temperature should be If suction temperature is high add refrigerant If suction temperature is low carefully re daim some of the charge Recheck the suction pressure as charge is adjusted EXAMPLE Fig 41 Outdoo
49. g this limit control is to gradually block off the return air after the unit has been operating for a period of at least 5 minutes As soon as the limit control functions the return air opening should be un blocked to permit normal air circulation By usingthis method to check the limit control it can be established that the limit is functioning properly and the unit will fail safe if there is a restricted circulating air supply or motor failure If the limit control does not function during this test the cause must be determined and corrected l Heating Sequence of Operation Heating Units Without Economizer When the thermostat calls for heating terminal W1 is ener gized In order to prevent thermostat short cyding the unit is locked into the H eating mode for at least 1 minute when W1 is energized The induced draft motor is energized and burner ignition sequence begins Theindoor evaporator fan motor IFM is energized 45 seconds after a flame is ignited When additional heat is needed W2 is energized and the high fire solenoid on the main gas valve MGV is energized When the thermostat is satisfied and W1 is deenergized the IFM stops after a 45 second time off delay Heating Units With Economizer When the thermostat calls for heating terminal W1 is ener gized In order to prevent thermostat short cyding the unit is locked into the H eating mode for at least 1 minute when W1 is energized The induced draft motor is ene
50. gs liammeter between terminals of the economizer control module and terminals S of the enthalpy sensor The milliammeter should indicate be tween 3 and 25 mA if the sensor is operating properly If the milliammeter indicates 0 the sensor may be wired backwards If any other readings are shown replace the sensor 5 1 b S 208 230 3 50 wi Pa SEE wore 5 PER __ ovg ami _ 5 gy Ell ns s n e au io 8i MTR BRN p t BRN rap caeco a E Fig 45 Typical Wiring Schematic and Component Arrangement C LEGEND AND NOTES FOR FIG 45 TYPICAL CONTROL WIRING SCHEMATIC AND COMPONENT ARRANGEMENT Adjustable Heat Anticipator Contactor Compressor Capacitor Cooling Compensator Compressor Lockout Compressor Motor Diode Enthalpy Control Economizer Emergency Power Supply 9 V Battery Equipment Economizer Relay Freeze Protection Thermostat Fuse Ground High Pressure Switch Hall Effect Sensor Ignitor Induced Draft Motor Indoor Fan Contactor Indoor Fan Motor Integrated Gas Unit Controller Low Pressure Switch Limit Switch Main Gas Valve Motor Outdoor Air Thermostat Outdoor Fan Motor Plug Plug Assembly Quadruple Terminal Relay Rollout Switch OTES Oak won SAT SEN SW1 2 S
51. he high pressure and low pressure switches Be sure that caps on the ports are tight Unit is now ready for initial start up START UP COMPRESSOR ROTATION On 3 phase units it is important to be certain the scroll com pressor is rotating in the proper direction To determine whether or not compressor is rotating in the proper direction 1 Connect service gages to suction and discharge pres sure fittings 2 Energize the compressor 3 Thesuction pressure should drop and the discharge pres sure should rise as is normal on any start up If the suction pressure does not drop and the discharge pres sure does not rise to normal levels 1 Note that the evaporator fan 006 and 007 only is prob ably also rotating in the wrong direction 2 Turn off power to the unit 3 Reverse any 2 of the unit power leads 4 Reapply power to the compressor The suction and discharge pressure levels should now move to their normal start up levels NOTE When the compressor is rotating in the wrong direc tion the unit will make an elevated level of noise and will not provide cooling HEATING SECTION START UP AND ADJUSTMENTS A CAUTION Complete the required procedures given in the Pre Start U p section on this page before starting unit Do not jumper any safety devices when operating the unit Ensure that burner orifices are properly aligned Unstable operation may occur when the burner orifices in the mani fold are misa
52. hin 15 minutes there is a lockout To reset the control break the 24 v power to W1 5 The evaporator fan motor will turn on 45 seconds after burner ignition 6 The evaporator fan motor will turn off 45 seconds after thermostat temperature is satisfied 7 Adjust airflow to obtain a temperature rise within the range specified on the unit nameplate NOTE The default value for the evaporator fan motor ON OFF delay is 45 seconds Thelntegrated Gas Unit Controller IGC modifies this value when abnormal limit switch cycles occur Based upon unit operating conditions the ON delay can be reduced to 0 seconds and the OFF delay can be ex tended to 180 seconds When one flash of the light emitting diode LED is observed the evaporator fan ON OFF delay has been modified If the limit switch trips at the start of the heating cycle dur ing the evaporator ON delay thetime period of the ON delay for thenext cyde will be5 seconds less than thetime at which the switch tripped EXAMPLE If the limit switch trips at 30 seconds the evaporator fan ON delay for the next cycle will occur at 25 seconds To prevent short cyding a 5 second reduction will only occur if a minimum of 10 minutes has elapsed since the last call for heating The evaporator fan OFF delay can also be modified Once the call for heating has ended there is a 10 minute period during which the modification can occur If the limit switch trips during this period the evapo
53. in Max Natural 50 3 5 0 MANIFOLD PRESSURE in wg Orifice Heating Input Orifice Heating Input Drill Size Btuh t Drill Size Btuh t NATURAL GAS PROPANE 3 3 0 8 ZA 5 0 036 072 3 4 56 When a 581B unit is converted to liquid propane LP the burners must be modified with accessory LP Kit TBased on altitudes from sea level up to 2000 ft above sea level For altitudes above 2000 ft reduce input rating 4 for each 1000 ft above sea level In Canada from 2000 ft above sea level to 4 500 ft above sea level derate the unit 1096 581B036 with 150 000 Btuh input not available 11581B036115 at high fire operation At low fire manifold pressure is 1 8 in wg and heating input is 82 000 Btuh 1581 048 072150 at high fire operation At low fire manifold pressure is 2 2 in wg and heating input is 120 000 Btuh Table 6 Altitude Compensation Units 581B036 072 ELEVATION Natural Natural ft Gas Gas Orifice ifi Orifice 1 0 2 000 33 3000 35 35 1 44 40 As the height above sea level increases there is less oxygen per cubic foot of air Therefore heat input rate should be reduced at higher altitudes TOrifices are available through your local distributor or branch NOTE The gas manifold is equipped with a plug located ap proximately 5 in down from the gas valve which may also be used to connect the manometer 3 Record number of seconds
54. installation start up service instructions SINGLE PACKAGE ROOFTOP 581B Sizes 036 072 3 to 6 Tons GAS HEATING ELECTRIC COOLING UNITS IMPORTANT READ BEFORE INSTALLING 1 Read and become familiar with these installation in structions before installing this unit Fig 1 2 Be sure the installation conforms to all applicable local and national codes 3 Theseinstructions contain important information for the proper maintenance and repair of this equipment Re tain these instructions for future use CONTENTS Page SAFETY CONSIDERATIONS 12 INSTALLATION 3 17 Locate the Unit 3 Unit Duct Connections 5 Rig and Place Unit 5 IV Field Connections 7 PRE START UP 17 START UP eonun eux ux ek REIR RO CR 17 27 Compressor Rotation 17 Heating Section Start Up and Adjustments 18 Cooling Section Start Up and Adjustments 21 IV Indoor Airflow and Airflow Adjustments 22 CARE AND MAINTENANCE 28 l Ait Filler eee desee SR 28 SERVICE 28 32 1 Cleaning ee ee 28 Lubrication 29 Condenser Fan Adjustment 29 IV Economizer Adjustment
55. k for leaks Check Burner Flame and Ignition Observethe unit heating operation Watch the burner flames through the access door to see if they are light blue and soft in appearance and if the flames are approximately the same for each burner See Fig 32 CARRYOVER FLAME BURNER FLAME Fig 32 Monoport Burners Main burners are factory set and should require no adjustment To check ignition of main burners and heating controls move thermostat set point above room temperature and verify that the burners light and evaporator fan is energized Check heat ing effect then lower the thermostat setting below the room temperature and verify that the burners and evaporator fan turn off Refer to Table 6 for the correct orifice to use at high altitudes G Airflow and Temperature Rise The heating section of each side of unit is designed and approved for heating operation within the temperature rise range stamped on theunit rating plate Temperature rise range is also found in Table 1 The heating operation airflow must produce a temperature rise that falls within the approved range Refer to Care and Maintenance section on page 28 to adjust heating airflow when required H Safety Check of Limit Control Limit control is located on the deck next to the evaporator fan The control shuts off the gas supply and energizes the evaporator fan motor and inducer motor if the unit overheats The recommended method of checkin
56. l cover is in place and secured 3 Donot remove compressor terminal cover until all electrical sources have been disconnected 4 If refrigerant leak is suspected around compres sor terminals relieve all pressure from system before touching or disturbing anything inside ter minal box 5 Never attempt to repair soldered connection while refrigerant system is under pressure 6 Do not use torch to remove any component Sys tem contains oil and refrigerant under pressure To remove a component wear protective goggles and proceed as follows a Shut off gas supply and then electrical power to unit b Reclaim refrigerant to relieve all pressure from system using both high and low pressure ports c Cut component connecting tubing with tubing cutter and remove component from unit d Carefully unsweat remaining tubing stubs when necessary Oil can ignite when exposed to torch flame Proceed as follows to inspect and prepare the unit for initial startup 1 Remove all access panels 2 Read and follow instructions on all WARNING CAU TION and INFORMATION labels attached to or shipped with unit 3 Makethe following inspections a Inspect for shipping and handling damages such as broken lines loose parts disconnected wires etc b Inspect for oil at all refrigerant tubing connections and on unit base Detecting oil generally indicates a refrigerant leak Leak test all refrigerant tubing connections using ele
57. ligned Follow the lighting instructions on the heating section opera tion label located inside the burner access door to start the heating section When lighting the unit for the first time perform the follow ing additional steps If the gas supply pipe was not purged before connecting the unit it will be full of air It is recom mended that the ground joint union be loosened and the supply line be allowed to purge until the odor of gas is de tected Never purge gas lines into a combustion chamber Im mediately upon detection of gas odor retighten the union Allow 5 minutes to elapse then light unit in accordance with Check ing Heating Control Operation section below A Checking Heating Control Operation Start and check the unit for proper heating control operation as follows Also see unit lighting instructions located inside the burner access panel 1 Turn on unit electrical supply and manual gas valve 2 Set system switch selector at HEAT position and fan switch at AUTO or ON position Set heating temperature lever above room temperature 3 Theinduced draft motor will start immediately The evapo rator fan will have a 45 second delay before starting 4 After a call for heating the main burners should light within 5 seconds If the burner does not light then there is a 22 second delay before another 5 second try If the burner still does not light the time delay is repeated If the burner does not light wit
58. m of base rail to combustible surfaces when not using curb 0 inches Condenser coil for proper airflow 36 in one side 12 in the other The side getting the greater clearance is optional Overhead 60 in to assure proper condenser fan operation Between Cody control box side 42 in per NEC National FILTER ACCESS PANEL Between unit and ungrounded surfaces control box side 36 in per NEC 9 Between unit and block or concrete walls and other grounded surfaces control box side 42 in per NEC h Horizontal supply and return end 0 inches 6 With the exception of the clearance for the condenser coil and combustion side as stated in Note 5a b and c a removable fence or barricade requires no clearance 7 Units may be installed on combustible floors made from wood or o Class A B or C roof covering material if set on base rail bUTSIDE APR 8 The vertical center of gravity is 1 6 457 up from the bottom of S S the base rail REAR a 633 11143 FILTER ECONOMIZER ACCESS PANEL CONDENSER COIL OPTIONAL ECONOMIZER HOOD gt 17 4 3 8 1416 CORNER AZ 2 1 27 3 4 L CORNER B 1800 2552225 27 1 11 16 0 3 3 16 RIGHT LEFT i ___ SIDE 1 7 3 16 11 7 0 3 13 16 SIDE EVAPORATOR 0 10 RETURN RETURN AIR OPENING
59. mined by Fig 22 Tighten screws 13 FILTER ACCESS PANEL COMPRESSOR ACCESS PANEL OUTDOOR AIR OPENING PANEL Fig 16 Typical Access Panel Locations SCREEN SEAL STRIP RETAINER HOOD TOP HOOD SIDE SEAL STRIP pon SCREEN TRACKS HOOD SIDE PLATE OUTDOOR AIR INLET SCREEN OUTDOOR AIR HOOD UNASSEMBLED HOOD TOP HOOD SIDE PLATE TRACKS FOR AIR INLET SCREEN HOOD SIDES AND TOP ASSEMBLED Fig 17 Outdoor Air Hood Details ECONOMIZER ECONOMIZER ECONOMIZER TOP CONTROL BOARD PLUG MOTOR SCREW BAROMETRIC RELIEF DAMPER 7 Q gt ECONOMIZER POSITION SETTING MOUNTING SCREWS BRACKET Fig 18 Varislide Economizer Installed in Unit ECONOMIZER CONTROL BOARD BAROMETRIC RELIEF DAMPER ECONOMIZER PLUG ECONOMIZER MOTOR Fig 19 Horizontal Varislide Economizer Installation 90 Degree Rotation BLOCK OFF PLATE Fig 20 Horizontal Discharge Block Off Plate oo WIRING HARNESS Fig 21 Typical Varislide Economizer and Wiring Harness
60. n FAN switch is placed in AUTO position 2 PlaceSYSTEM switch in COOL position and FAN switch in AUTO position Set cooling control below room temperature Observe that compressor condenser fan mo tor and evaporator fan motor start Observe that cool ing cyde shuts down when control setting is satisfied or reset thermostat at a position above room tempera ture Compressor will shut off Evaporator fan will shut off after a 30 second delay 3 Check unit charge See Section B below 4 To shut off unit set system selector switch at OFF position Resetting thermostat at a position above room temperature shuts unit off temporarily until space tem perature exceeds thermostat setting Units are equi pped with Cycle LOC protection device Unit shuts down on any safety trip and indicator light on thermostat comes on Check reason for all safety trips 5 When using an autochangeover room thermostat place both SYSTEM and FAN switches in AUTO positions Observe that unit operates in H eating mode when tem perature control is set to call for heating above room temperature and operates in Cooling mode when tem perature control is set to call for cooling below room temperature 6 Compressor restart is accomplished by manual reset at the thermostat by turning the selector switch to OFF and then to ON positions B Checking and Adjusting Refrigerant Charge The refrigerant system contains R 22 refrigerant and is fully charg
61. n necessary 6 Check and clean vent screen if needed A WARNING Failure to follow these warnings could re sult in serious personal injury 1 Turn off gas supply then turn off electrical power to the unit before performing any maintenance service on the unit 2 Use extreme caution when removing panels and parts As with any mechanical equipment per sonal injury can result from sharp edges etc 3 Never place anything combustible either on or in contact with the unit 4 Should overheating or the gas supply fail to shut off shut off the external main manual gas valve to the unit then shut off the electrical supply I AIR FILTER CAUTION Never operate the unit without a suitble air filter in the return air duct system Always replace the filter with the same dimensional size and type as originally installed See Table 1 for recommended filter sizes Inspect air filter s at least once each month and replace throwaway type or clean deanable type at least twice dur ing each heating and cooling season and whenever the fil ter s becomes dogged with dust and lint When necessary replace filters with the same dimensional size and type as originally provided SERVICE A CAUTION When servicing unit shut off all electri cal power to unit to avoid shock hazard or injury from rotating parts CLEANING Inspect unit interior at the beginning of each heating and cool ing season and as opera
62. n position remove shipping materials and rig ging skids IT ON ROOF CURB DETAIL A Fig 6 Rigging Details BASE UNIT 581B 048 NOMINAL CAPACITY tons 03 0 04 5 6 J OPERATING WEIGHT Ib Unit With Economizer Roof Curb COMPRESSOR Quantity oz Table 1 Specifications Scroll 072 REFRIGERANT TYPE Operating Charge Ib oz CONDENSER FAN Quantity Diameter in Nominal Cfm Motor Hp Rpm Watts Input Total CONDENSER COIL Rows Fins in Total Face Area sq ft EVAPORATOR FAN Size in Type Drive Nominal Cfm Maximum Continuous Bhp Motor Frame Size Fan Rpm Range Motor Bearing Type Maximum Fan Rpm Motor Pulley Pitch Diameter A B in Nominal Motor Shaft Diameter in Fan Pulley Pitch Diameter in Belt Type Length in Pulley Center Line Distance in Speed Change Per Full Turn of Movable Pulley Flange rpm Movable Pulley Maximum Full Turns from Closed Position Factory Setting Full Turns Open Factory Speed Setting rpm Fan Shaft Diameter at Pulley in 10x 10 Belt 1200 1 20 48 760 1090 Ball A 33 10 0 12 4 R 22 Propeller 4000 V4 1100 300 Enhanced Copper Tubes Aluminum Lanced Fins 2 17 2 17 10 10 Belt 1600 1 20 48 840 1185 Ball 2100 1 9 2 9 Vb 4 0 A 36 10 0 12 4 70 5 3 980 5 Centrifugal 10x 10 Belt 2000 1 80 56 1020 1460 B all 2100 2 4 3 4 Ve 4 0 A 40 14 7 15 5
63. ndicating high enthalpy The motor should drive towards closed If these actions do not occur replace module Disconnection 1 2 Kohm checkout resistor before resuming operation Damper does not close No power to economizer Disconnect power at TR and TR1 Disconnect jumper across P and P1 Connect jumper across TR and 1 Connect jumper across T1 and T If connected remove enthalpy sensor from terminals and Factory installed 620 ohm resistor should be connected to terminals Sp and Apply power 24 Vac to terminals TR and TR1 The LED should be off and the damper should be in the closed position Disconnect the factory installed 620 ohm resistor from terminals S and The LED should light up and the motor should drive towards open If this does not happen replace the economizer control module Return spring failure If power to unit is off and damper does not close check for a bound linkage If linkage is not bound then internal spring may be broken Replace actuator Economizer motor failure If the economizer control module is functioning properly verify that there is a minimum of 24 Vac at terminals TR and 1 If the motor is not operating replace the motor Damper does not open Sensor incorrectly wired or bad To verify sensor operation reconnect the lead of the outdoor enthalpy sen or close according to sor to the terminal of the economizer control module Connect a DC mil enthalpy readin
64. ng that the OAT and EC settings and the economizer control operative SAT board wiring are correct check to ensure that the 24 vac terminal of the SAT has 24 vac white wire If OAT EC and control board are functioning and wired properly and no 24 vac exists check wiring see unit label diagram 2 supply air temperature is greater than 57 F 24 vac should be found at ter minal T2 on the SAT pink wire If 24 vac is not present replace SAT Damper does not Incorrect economizer 1 Verify that SW2 and SWA are wired and working properly see unit label close wiring diagram 2 Check diode D19 If diode is not functioning properly replace economizer control board Incorrect damper actuator 1 After verifying that the wiring is correct modulate the damper to the mini wiring or inoperative econo mum position Remove the calls for G mizer circuit board 2 If the damper does not move check for 24 vac at PL6 1 red wire If 24 vac is not present check wiring see unit label diagram 3 If damper still does not move check for 24 vac at blue terminal of econo mizer control board blue wire If 24 vac is not present replace the econo mizer control board Incorrect SAT wiring or in 1 After verifying that the wiring is correct and the economizer control board is operative SAT functioning properly place the OAT or EC switch in the closed position Place a call for Y1 and open the damper to the fully open position Confirm that
65. ntact your local repre sentative to verify Interpolation is permissible Do not extrapolate Minimum allowable cfm is 300 cfm ton 2 indicates field supplied motor and drive required 3 indicates maximum usable bhp 4 Motor drive range 840 to 1185 rpm All other roms require a field supplied drive 5 Values include losses for filters unit casing and wet coils o oo 26 Table 15 581B060 Air Delivery Horizontal Discharge Units AIRFLOW Cfm BELT DRIVE MOTOR AIRFLOW External Static Pressure in wg Cfm BELT DRIVE MOTOR External Static Pressure in wg Hom Bh Rem Bhp Hom Bhp Rem Bh Rem Bh Hem on 0 8 1 0 LEGEND Bhp Brake Horsepower Input to Fan NOTES 1 2 gs indicates field supplied motor and drive required Boldface indicates field supplied drive is required See Note 4 indicates maximum usable bhp Motor drive range is 1020 to 1460 rpm All other rpms require a field supplied drive Values include losses for filters units casing and wet coils Maximum continuous bhp is 1 8 Extensive motor and electrical test ing on these units ensures that the full range of the motor can be utilized with confidence Using your fan motors up to the ratings shown will not result in nuisance tripping or premature motor failure Unit warranty will not be affected Use of a field
66. ollout switch RS is a temperature actuated automatic re set switch connected in series with heating limit switch The function of the switch is to close the main gas valve in the 20 event of flame rollout The switch is located above the main burners on the internal wind baffle When the temperature at the rollout switch exceeds the maximum allowable tem perature the W control circuit trips deenergizing the gas valve and stopping gas flow to the burners The inducer motor is energized when the rollout switch trips Although the rollout switch has an automatic reset the GC locks out the unit when a trip occurs and must be reset at unit disconnect If the switch cycles again shut down the unit and call for service COOLING SECTION START UP AND ADJUSTMENTS A CAUTION Complete the required procedures given in the Pre Start U p section on page 17 before starting the unit Do not jumper any safety devices when operating the unit Do not operate the compressor when the outdoor tem perature is below 25 F unless accessory low ambient kit is installed Do not rapid cycle the compressor Allow 5 minutes be tween on cycles to prevent compressor damage A Checking Cooling Control Operation Start and check the unit for proper cooling control operation as follows 1 Place room thermostat SYSTEM switch in OFF posi tion Observe that blower motor starts when FAN switch is placed in ON position and shuts down whe
67. on CARE AND MAINTENANMCE To ensure continuing high performance and to minimize the possibility of premature equipment failure periodic mainte nance must be performed on this equipment This combina tion heating cooling unit should beinspected at least once each year by a qualified service person NOTE TO EQUIPMENT OWNER Consult your local dealer about the availability of a maintenance contract A WARNING ability to properly perform mainte nanceon this equipment requires certain expertise me chanical skills tools and equipment If you do not pos sess these do not attempt to perform any maintenance on this equipment other than those procedures recom mended in the User s Manual FAILURE TO HEED THIS WARNING COULD RESULT IN SERIOUS PER SONAL INJ URY AND POSSIBLE DAMAGE TO THIS EQUIPMENT The minimum maintenance requirements for this equipment are as follows 1 Inspect air filter s each month Clean or replace when necessary 2 Inspect cooling coil drain pan and condensate drain each cooling season for cleanliness Clean when necessary 3 Inspect fan motor and wheel for cleanliness and check lubrication each heating and cooling season Clean and lubricate if required when necessary 4 Check electrical connections for tightness and controls for proper operation each heating and cooling season Service when necessary 5 Check and inspect heating section before each heating season Clean and adjust whe
68. onnecting improperly routed rigid gas pip ing to the gas valve Use a backup wrench when mak ing connection to avoid strain on or distortion of the gas control piping CAUTION If a flexible conductor is required or al lowed by the authority having jurisdiction black iron pipe shall be installed at the gas valve and extend a minimum of 9 in outside the unit casing A WARNING Never use a match or other open flame when checking for gas leaks Never purge gas line into combustion chamber F ailure to adheretothis warning could result in an explosion causing personal injury or death 8 Check for gas leaks at all field and factory installed gas lines after all piping connections have been completed Use soap and water solution or method specified by lo cal codes and or regulations Liquid Propane Units are shipped for use with natural gas but may be field converted for use with liquid propane with accessory LP liq uid propane kit LP gas equipment must conform to NFPA safety standards LP gas pressure at the unit must not beless than 5 in wg or greater than 13 in wg under full load Maintaining proper gas pressure depends on 1 Vaporization rate Vaporization rate is determined by the temperature of the LP and the level of LP in the tank 2 Proper pressure regulation Two stage regulation is more cost effective and efficient 3 Pressure drop in lines between regulators and between the second stage
69. orizontal duc opening covers Using the same screws install covers with insulation side down facing outside on the unit on ver tical duct openings Seals around duct openings must betight Model 581B meets the California maximum oxides of nitro gen NO emission regulations when equipped with acces sory NO Reduction Kit part no 309424 101 These units are equipped with an energy saving automatic electric direct spark ignition system that does not have a con tinuously burning pilot units are manufactured with natu ral gas controls These units are designed for a minimum continuous return air temperature of 50 F dry bulb or an intermittent opera tion down to 45 F dry bulb such as when used with a night set back thermostat units can be connected into existing duct systems that are properly sized and designed to handle an airflow of 300 to 500 cfm per each 12 000 Btuh of rated cooling capacity NOTE When installing any accessory or factory installed op tion see the manufacturer s installation instructions pack aged with the accessory or option A qualified agency must usefactory authorized kits or accessories when modifying this unit 1 LOCATE THE UNIT A Clearance Maintain dearance around and above unit to provide mini mum distance from combustible materials proper airflow and service access See Fig 2 and 3 Minimum dearance to combustibles is 48 in on flue side bot tom of unit when not
70. ors up to the ratings shown in this table will not result in nuisance tripping or premature motor failure Unit warranty will not be affected 23 Table 9 5818036 Air Delivery Vertical Discharge Units BELT DRIVE MOTOR External Static Pressure in wg Ut 0 Bhp Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp AIRFLOW Cfm BELT DRIVE MOTOR AIRFLOW External Static Pressure in wg Cfm LEGEND Bhp Brake Horsepower Input to Fan 5 NOTES 1 Boldface indicates a field supplied drive is required See Note 2 2 drive 3 Values include losses for filters unit casing and wet coils 4 Maximum continuous bhp is 1 2 Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence Using your fan motors up to the ratings shown will not result in nuisance trip ping or premature motor failure Unit warranty will not be affected Use of a field supplied motor may affect wire sizing Contact your local repre sentative to verify 6 Interpolation is permissible Do not extrapolate Motor drive range is 760 to 1090 rpm All other rpms require a field supplied 7 Minimum allowable is 300 cfm ton Table 10 581B048 Air Delivery Vertical Discharge Units BELT DRIVE MOTOR AIRFLOW Cfm External Static Pressure in wg 0 7 o ipe og o4
71. r Temperature 85F Suction Pressure 74 psig Suction Temperature should be 48 F Suction Temperature may vary 5 F D Refrigerant Leaks Proceed as follows to repair a refrigerant leak and to charge the unit 1 Locate leak and ensure that refrigerant system pres sure has been relieved 2 Repair leak following accepted practices NOTE Replace filter drier in the liquid line whenever the system has been opened for repair 3 Add small charge of R 22 refrigerant vapor to system and leak test unit 4 Evacuate refrigerant system if additional leaks are not found 5 Charge unit with R 22 refrigerant using a volumetric charging cylinder or accurate scale Refer to unit rating plate for required charge Be sure to add extra refriger ant to compensate for internal volume of filter drier VI MAIN BURNERS At the beginning of each heating season inspect for deterio ration or blockage due to corrosion or other causes Observe the main burner flames and adjust if necessary Vil FLUE GAS PASSAGEWAYS To inspect the flue collector box and upper areas of the heat exchanger 1 Remove the combustion blower wheel and motor assem bly according to directions in Combustion Air Blower sec tion below 2 Remove the 3 screws holding the blower housing to the flue cover 3 Remove the flue cover to inspect the heat exchanger 4 Clean all surfaces as r
72. rail as shown in detail A Holes in base rails are centered around the unit center of grav ity Use wooden top skid when rigging to prevent rigging straps from damaging unit Weights include base unit without economizer See Table 1 for unit operating weights with an economizer N CAUTION All panels must be in place when rigging UN PLACE ALL SEAL STRIPS IN PLACE BEFORE PLACING DUCT END NOTE Connection must be made to roof curb before unit is set in place RIG AND PLACE UNIT Inspect unit for transportation damage File any daim with transportation agency Keep unit upright and do not drop Spreader bars are not required if top crating is left on unit Rollers may be used to move unit across a roof Level by us ing unit frame as a reference See Table 1 and Fig 6 for ad ditional information Operating weight is shown in Table 1 and Fig 6 Lifting holes are provided in base rails as shown in Fig 6 Refer to rigging instructions on unit IMPORTANT If unit has forklift protection skids be sure to remove forklift protection skids from under unit before set ting unit in place A CAUTION All rigging panels must be in place when A properly positioned unit will have the following clearances between unit and roof curb Y4 in clearance between roof curb and base rails on each side and front of unit 1582 dear ance between roof curb and rear of unit See Fig 4 Views A A and C C After unit is i
73. rator fan OFF delay will increase by 15 seconds A maximum of 9 trips can occur ex tending the evaporator fan OFF delay to 180 seconds To restore the original default value reset the power to the unit To shut off unit set system switch selector at OFF position Resetting heating selector lever below room temperature will temporarily shut unit off until space temperature falls below thermostat setting B Safety Relief A soft solder joint at the suction service Schrader port pro vides pressure relief under abnormal temperature and pres sure conditions C Ventilation Continuous Fan Set fan and system switch selectors at ON and OFF posi tions respectively Evaporator fan operates continuously to provide constant air circulation When the evaporator fan selector switch is turned to the OFF position there is a 30 second delay before the fan turns off D Gas Input Check gas input and manifold pressure after unit start up See Table 5 If adjustment is required proceed as follows CAUTION These units are designed to consume the rated gas inputs using the fixed orifices at speci fied manifold pressures as shown in Table 5 DO NOT REDRILL THE ORIFICES UNDER ANY CIRCUMSTANCES The rated gas inputs shown in Table 5 are for altitudes from sea level up to 2000 ft above sea level These inputs are based on natural gas with a heating value of 1050 Btu ft at 0 65 specific gravity or LP gas with a heating value of 2500
74. return the outdoor air damper to the minimum position when enthalpy rises above the set point The settings are A B C and D Set the enthalpy change over per the setting in Fig 27 Replace outdoor air opening panel using screws from Step 2 Replace filter access panel Ensure the filter access panel slides along thetracks and is securely en gaged See Fig 28 Fasten hood top and side plate assembly Fig 29 to outdoor air opening panel with screws provided Slide outdoor air inlet screen into screen track on hood side plate While holding screen in place fasten screen retainer to hood using screws provided See Fig 30 cfm 10 FILTER ACCESS PANEL OUTDOOR AIR OPENING PANEL Fig 29 Outdoor Air Hood Installed On Unit Fig 30 Filter Installed on Outdoor Air Hood PRE START UP A WARNING Failure to observe the following warn ings could result in serious personal injury 1 Follow recognized safety practices and wear pro tective goggles when checking or servicing refrig erant system 2 Do not operate compressor or provide any electric power to unit unless compressor termina
75. rgized and the burner ignition sequence begins The indoor evaporator fan motor IFM is energized 45 seconds after a flame is ignited and the damper moves to the minimum position If the two position damper is used the outdoor air damper opens to the minimum position whenever the evaporator fan runs When additional heat is needed W2 is energized and the high fire solenoid the main gas valve MGV is energized When the thermostat is satisfied W1 is energized the FM stops after a 45 second ti me off delay The economizer damper then moves to the full y closed position When using continuous fan the damper will remain in the minimum position J Limit Switches Heating limit switch LS deenergizes the gas valve and the Integrated Gas Unit Controller IGC if the leaving air tem perature exceeds the maximum allowable temperature Normally closed limit switch completes a circuit to the gas valve Should the leaving air temperature rise above the maximum allowable temperature the limit switch opens instantly closing the gas valve and stopping gas flow to the burners Theinducer motor and the evaporator motor are en ergized to cool heat exchanger When the air temperature at the limit switch drops to the low temperature setting of the limit switch the switch doses and completes the gas valve circuit The electric spark igni tion system cydes and the unit returns to normal heating operation K Rollout Switch R
76. rol relay or capacitor Insufficient line voltage Determine cause and correct Incorrect or faulty wiring Check wiring diagram and rewire correctly Thermostat setting too high Lower thermostat setting below room temperature Compressor will not start Faulty wiring or loose connections in compressor Check wiring and repair or replace but condenser fan runs circuit Compressor motor burned out seized or internal Determine cause Replace compressor overload open Defective run start capacitor overload start relay Determine cause and replace One leg of of 3 phase power dead Replace fuse or reset circuit breaker Determine cause ther han norman other than normally to nameplate satisfying thermostat Defective compressor Replace and determine cause Compressor operates continuously Leaking valves in compressor Replace compressor Air in system Reclaim refrigerant evacuate system and recharge Condenser coil dirty or restricted Clean coil or remove restriction excessive noise Start Up on page 17 Excessive head pressure Head pressure too low Compressor rotating in wrong direction Reverse the 3 phase motor power leads as described in Start Up on page 17 Excessive suction High heat load Check for source and eliminate pressure Compressor valves leaking Replace compressor Refrigerant overcharged Reclaim excess refrigerant Compressor rotating in wrong direction Reverse the 3 phase motor power lead
77. rom obstructing airflow NOTE Horizontal units may be installed on a roof curb if required NOTES aes worse UNIT SIZE 1 Roof curb accessory is shipped ACCESSORY disassembled CRRFCURBO01A00 Insulated panels 956 581B036 072 Dimensions in in millimeters CRRFCURBO002A00 S16 Roof curb galvanized steel Attach ductwork to curb flanges of duct rest on curb Service clearance 4 ft on each side E Direction of airflow SERVICE PLATE SIZES ae 5815 D Alt g PACKAGE 581B C Drain G Hole Contro ACCESSORY 7 314213 204 otter 16 que 9 9 cthruthe Side 036 072 406 ARON 551 44 5 n CRBTMPWR001A00 a 94 V recte Bottom SUPPLY AIR GASKET OPENING SUPPLIED WITH CURB M 2 0 0 7 16 x Uu 17 7 13 16 171 1 87 SUP 1G 5041 13341 0 37 BOLT HEADS 0 0 1 4 71 gt NATL TYPICAL 4 SIDES COUNTER FLASHING FIELD SUPPLIED 761 DUCT 0 0 7 18 3 0 0 0 7 16 FIELD SUPPLIED ROOFING FELT OPENING FOR BASEPAN 19141 111 FIELD SUPPLIED ENTRY SERVICE 111 a1 A A BOLT HEADS BOLT HEADS SECTION C C SCALE 1 4 CANT STRIP e FIELD SUPPLIED ROOFING MATERIAL FIELD SUPPLIED 0 3 1 4 LNY SEE NOTE 2 4 RIGID INSULATION 25 FIELD SUPPLIED oe GAS 4 SERVIC
78. rtical Discharge Units BELT DRIVE MOTOR AIRFLOW External Static Pressure in wg Gm oap ie 92 mem Ew Fem ehe Rom Bi Rom Bi Pem Si Fem Bhe Cfm 1392 1 81 1460 1427 1 94 1518 BELT DRIVE MOTOR AIRFLOW External Static Pressure in wg On LEGEND Bhp Brake Horsepower Input to Fan NOTES Boldface indicates field supplied drive is required See Note 4 2 indicates field supplied motor and drive required indicates maximum usable bhp Motor drive range is 1020 to 1460 rpm All other rpms require a field supplied drive Values include losses for filters units casing and wet coils Maximum continuous bhp is 1 8 Extensive motor and electrical test ing on these units ensures that the full range of the motor can be utilized with confidence Using your fan motors up to the ratings shown will not result in nuisance tripping or premature motor failure Unit warranty will not be affected Use of a field supplied motor may affect wire sizing Contact your lo cal representative to verify Interpolation is permissible Do not extrapolate Minimum allowable cfm is 300 cfm ton Table 12 581B072 Air Delivery Vertical Discharge Units BELT DRIVE MOTOR AIRFLOW External Static Pressure in wg ro 1 0 e Bmp em Hem Bhp Rom Hem Bhp Rom Bhp
79. s as described in Start Up on page 17 Suction pressure too low Low refrigerant charge Check for leaks repair and recharge if necessary Temperature too low in conditioned area Reset thermostat Outdoor ambient below 25 F Install low ambient kit Evaporator fan Time off delay not finished Wait for 30 second off delay will not shut off 34 Table 21 Varislide Economizer Troubleshooting PROBLEM CAUSE REMEDY Damper does not Indoor evaporator fan 1 Check to ensure that 24 vac is present at terminal C1 on the IFC or that open is off 24 vac is present at the IFO terminal Check whether 24 vac is present at PL6 1 red wire and or PL6 3 black wire If 24 vac is not present check wiring see unit label diagram Check proper thermostat connection to G on the connection board No power to economizer Check that SW3 is properly making contact with the damper blade Check motor that SW1 is in the NC normally closed position Check diode D18 If diode is not functioning properly replace economizer control board Confirm that the economizer control board is grounded properly at PL6 4 brown wire and at brown terminal of the economizer control board brown wire The economizer motor must also be grounded properly at the negative motor terminal brown wire Verify SW1 and SW3 are working and wired properly see unit label diagram Check for 24 vac input at both PL6 1 red wire and PL6
80. s supply to unit Remove manometer from pressure tap Replace pipe plug on gas valve or manifold Turn on gas to unit 8 Check for leaks RU COVER SCREW OVER REGULATOR ADJUSTMENT SCREW FOR LOW FIRE OPERATION MANIFOLD PRESSURE TAP COVER SCREW OVER REGULATOR GAS ADJUSTMENT VALVE SCREW FOR 2 STAGE HIGH FIRE OPERATION BURNERS Fig 31 Burner Tray Details Measuring Manifold Pressure LP Gas Units The main burner orifices on LP gas unit aresized for the unit rated input when the manifold pressure is 3 5 in wg high fire on two stage units Proceed as follows to adjust gas input on an LP gas unit 1 Turn off gas to unit 2 Remove pipe plug on outlet of gas valve or manifold 3 Connect manometer 19 NOTE The gas manifold is equipped with a plug located proximately 5 in down from the gas valve which may also be used to connect the manometer 4 Turn on gas to unit 5 Remove cover screw over regulator adjustment screw on gas valve See Fig 31 6 Adjust regulator adjustment screw for a manifold pres sure reading of 3 5 in wg high fireon two stage units Turn adjusting screw dockwiseto increase manifold pres sure or turn adjusting screw counterclockwise to decrease manifold pressure 7 Replace cover screw 8 Turn off gas to unit 9 Remove manometer from pressure tap 10 Replace pipe plug on gas valve or manifold 1l Turn on gas to unit and chec
81. sequential problems when the power supply is uninterrupted When a break in power occurs the IGC will resulting in a loss of fault history Theindoor evaporator fan ON OFF times will also be reset The LED error code can be observed through the viewport During servicing refer to the label on the control box cover or Table 17 for an explanation of LED error code descriptions If lockout occurs unit may be reset by interrupting the power supply to unit for at least 5 seconds A CAUTION When servicing gas train do not hit or plug orifice spuds Table 17 LED Error Code Description ON Operation Hardware 1 Flasht Evaporator Fan On Off Delay Modified 4Flashes 4Consecutive Limit Switch Faults 5Flashes Ignition Lockout Fault Induced Draft Motor Fault 7 Flashes Rollout Switch Fault 8 Flashes Internal Control Fault LEGEND LED Light Emitting Diode A 3 second pause exists between LED error code flashes If more than one error code exists all applicable codes will be displayed in numeri cal sequence TIndicates a code that is not an error The unit will continue to operate when this code is displayed IMPORTANT Refer to Troubleshooting Tables 18 22 for additional information 31 Removal and Replacement of Gas Train See Fig 31 and 43 1 Shut off manual gas valve 2 Shut off power to unit 3 Remove compressor access panel 4
82. sor and OFM shut off After a 30 second delay the IFM shuts off If the thermostat fan selector switch is in the ON position the evaporator motor will run continuously Cooling Units With Varislide Economizer When the outdoor air temperature is above the OAT setting and the room thermostat calls for cooling compressor con tactor is energized to start the compressor and outdoor con denser fan motor OFM The evaporator indoor fan motor IFM is energized and the economizer damper moves to the minimum position After the thermostat is satisfied the damper moves to the fully closed position when IFM is deenergized When the outdoor air temperature is below the OAT setting and the thermostat calls for Y1 and cooling the econo mizer damper moves to the minimum position when the evaporator fan starts The first stage of cooling is provided by the economizer If the supply air temperature is above 57 F a switch on the supply air thermostat is dosed between the T2 terminal and the 24 vac terminal This causes the damper to continue to modulate open until the supply air tem perature falls below 55 F or the damper reaches the fully open position When the supply air temperature is between 55 F and 52 F the supply air thermostat has open switches between the T2 and 24 vac terminals and between the T1 and 24 vac termi nals This causes the economizer damper to remain in an in termediate open position If the supply air tempera
83. supplied motor may affect wire sizing Contact your lo cal representative to verify Interpolation is permissible Do not extrapolate Minimum allowable cfm is 300 cfm ton Table 16 581B072 Air Delivery Horizontal Discharge Units AIRFLOW Cfm BELT DRIVE MOTOR AIRFLOW External Static Pressure in wg BELT DRIVE MOTOR External Static Pressure in wg Rpm Bhp Bhp Rpm Bhp Bhp 0 8 1 0 Bnp Rem Bmp 1 1 1 1 1 1 86 1 95 On LEGEND Bhp Brake Horsepower Input to Fan NOTES 1 Boldface indicates field supplied drive is required See Note 4 2 indicates field supplied motor and drive required indicates maximum usable bhp Motor drive range is 1120 to 1585 rpm All other roms require a field supplied drive Values include losses for filters units casing and wet coils Maximum continuous bhp is 2 4 Extensive motor and electrical test ing on these units ensures that the full range of the motor can be utilized with confidence Using your fan motors up to the ratings shown will not result in nuisance tripping or premature motor failure Unit warranty will not be affected Use of a field supplied motor may affect wire sizing Contact your lo cal representative to verify Interpolation is permissible Do not extrapolate Minimum allowable cfm is 300 cfm t
84. tage Never operate a motor where a phase imbalance in supply voltage is greater than 296 Use the following formula to determine the percent age of voltage imbalance max voltage deviation from average voltage 96 Voltage Imbalance 100 x average vollage Table 3B Electrical Data Units with Electrical Convenience Outlet NOMINAL VOLTAGE V Ph Hz MINIMUM UNIT VOLTAGE COMBUSTION POWER SUPPLY RANGE COMPRESSOR ao FAN MOTOR WITH OUTLET DISCONNECT Mex MA IRA FUA TUA Mea WOCHE FLA IRA e 07 036 3 Tons oas 208 230 3 60 187 254 135 990 07 49 57 285285 3535 2828 1177117 4 Tons 575 3 60 518 632 5 8 40 0 0 4 2 2 30 11 5 15 11 47 5 Tons 460 360 4 508 90 620 08 26 30 ma 29 v S97 536 ste 632 7i soo 08 26 ms 6 0350 508 96 700 06 26 s mse 29 7 95 sae sta e32 77 seo os 26 30 a 29 4 LEGEND CUL Canadian Underwriters Laboratories FLA Full Load Amps HACR Heating Air Conditioning and Refrigeration IFM Indoor Evaporator Fan Motor LRA Locked Rotor Amps MCA Minimum Circuit Amps MOCP Maximum Overcurrent Protection NEC National Electrical Code OFM Outdoor Condenser Fan Motor RLA Rated Load Amps Used to determine minimum disconnect per NEC TFuse or HACR circuit breaker UL UL
85. tage inlet hole in the control corner unit is switched OFF before making any wiring changes panel Electrical shock can cause personal injury or death Proceed as follows to complete the high voltage connections to the unit For operation on 208 v disconnect the black wire from the 230 v orange wire on the transformer and connect it to the 200 v red wire from the transformer Insulate the end of the orange wire 1 Connect ground lead to chassis ground connection when using separate ground wire 2 Pigtails are provided for field power connection Use factory supplied splices or UL Underwriters Table 3A Electrical Data Units Without Electrical Convenience Outlet MINIMUM UNIT NOMINAL VOLTAGE COMBUSTION unit NOMINAL OLTAGE COMPRESSOR POWER SUPPLY DISCONNECT 3313 V Ph Hz SIZE Wim RLA LRA FLA IA FLA MCA FLA LRA 036 3 Tons se 51 390 o4 22 30 99 1 9 4 3 5 048 54 195 990 or 49 5 225225 3080 22 22 1127112 4 Tons os 74 495 04 22 30 97 15 a se 400 04 22 30 93 9 4 187 25 74 5 8 460 3 60 414 90 620 08 26 30 147 20 14 84 575 3 60 518 71 500 26 30 11 6 15 11 59 77 208 230 1 60 5 169 0 57 46 3 46 3 60 60 45 45 216 216 060 5 Tons ER 208 230 3 60 2 156 0 57 32 8 32 8 40 40 32 32 200 200 6 Tons 603960 414 508 96
86. tdoor air tem perature is below the outdoor air thermostat OAT setting or the outdoor air enthal py is below the enthalpy control EC setting the damper motor starts The damper drives open until it reaches full open and SW1 is activated When SW1 is deactivated the damper motor stops When the cooling load is satisfied or outdoor air is no longer below the OAT or EC setting the damper returns to the minimum position If the supply air thermostat located on the evaporator fan housing senses a supply air temperature less than 50 F the damper closes until the supply air temperature is above 50 F Table 7 Fan Rpm at Motor Pulley Settings MOTOR PULLEY TURNS OPEN Los 1 1 2 m 3 4 m 5 55 6 1055 1055 1025 990 960 925 890 860 825 795 760 1150 1115 1080 1045 1015 980 945 910 875 840 Approximate fan rpm shown Table 8 Evaporator Fan Motor Data MAXIMUM MAXIMUM UNIT UNIT CONTINUOUS AMP 581B BHP VOLTAGE DRAW Single 208 230 208 230 ER Three 1 20 es Singe 120 2080380 54 Three 40 24 d Singe 180 208250 97 Three 46 29 uw 208 230 Three EE Rm LEGEND Bhp Brake Horsepower Extensive motor and electrical testing on these units ensures that the full horsepower range of the motors can be utilized with confidence Using your fan mot
87. the 24 vac terminal of the SAT has 24 vac white wire If 24 vac is not present check wiring see unit label diagram 2 If supply air temperature is less than 52 F 24 vac should be found at termi nal T1 on the SAT violet wire If 24 vac not found replace SAT Economizer motor failure If economizer control board and SAT are functioning properly verify that there is a minimum of 18 vdc at the positive motor terminal If a minimum of 18 vdc is present and the motor is still not operating replace the motor Economizer damper Insufficient battery power in 1 Check voltage potential across batteries If lower than 14 vdc replace close does not close on operative economizer control on power loss power supply 9 v alkaline batteries Check this emergency power loss board power supply on a regular basis or whenever the filters are changed If the close on power loss and economizer control board are functioning properly check for 14 vdc or higher at the blue terminal of the economizer control board blue wire when power is disconnected from unit If 14 vdc is not present replace the control board LEGEND CI Common OAT Outdoor Air Thermostat EC Enthalpy Control PL Plug IFC Indoor Evaporator Fan Contactor SAT Supply Air Thermostat IFO Indoor Evaporator Fan On SW Economizer Position Switch Table 22 PARABLADE Economizer Troubleshooting PROBLEM CAUSE REMEDY Damper does not open Evaporator fan
88. ting conditions require A Evaporator Coil 1 Turn unit power off Remove evaporator coil access panel 2 If economizer is installed remove economizer by dis connecting economizer plug and removing mounting screws See Fig 18 and 19 Refer to Accessory Econo mizer Installation Instructions or Optional Economizer sections on pages 13 and 14 for further details 3 Slide filters out of unit 4 Clean coil using a commercial coil cleaner or dish washer detergent in a pressurized spray canister Wash both sides of coil and flush with clean water For best results backflush toward return air section to remove foreign material Flush condensate pan Reinstall economizer and filters Reconnect wiring Replace access panels B Condenser Coil Inspect coil monthly Clean condenser coil annually and as required by location and outdoor air conditions One Row Coil size 036 Wash coil with commercial coil cleaner It is not necessary to remove top panel 2 Row Coils sizes 048 072 NOTE Save all screws removed in this section The screws must be used when reinstalling the equipment 1 Turn off unit power 2 Remove top panel screws on condenser end of unit 3 Remove condenser coil corner post See Fig 35 To hold top panel open place coil corner post between top panel and center post See Fig 36 4 Remove screws securing coil to center post 5 Remove fastener holding coil sections together at re turn end
89. to the minimum position After the room thermostat is satisfied the damper will spring return to the full closed position When the outdoor air is below the enthalpy control setting and the thermostat calls for cooling the economizer outdoor air damper is opened proportionally to maintain between 50 and 56 F at the mixed air sensor If outside air alone cannot satisfy the cooling requirements economizer cooling is integrated with mechanical cooling When the room ther mostat is satisfied the damper will spring return tothefully dosed position Time Guard Device If the unit is equipped with accessory Time Guard II recycle timer theunit will delay 5 minutes between compressor starts Low Pressure Switch LPS When the liquid line pressure drops below 7 psig the LPS opens 24 v power to the compressor contactor and stops the compressor When the pressure reaches 22 psig the switch resets and the compressor is allowed to come back on High Pressure Switch HPS When therefrigerant high side pressure reaches 428 psig the HPS opens 24 v power to the compressor contactor and stops the compressor When the pressure drops to 320 psig the switch resets and the compressor is allowed to restart Freeze Protection Thermostat FPT When the evaporator coil leaving refrigerant temperature drops below 30 F the FPT opens 24 v power to the compressor con tactor and stops the compressor When the leaving refriger ant temperature warms
90. ture falls below 52 F a switch on the supply air thermostat is dosed between the T1 terminal and the 24 vac terminal This causes the damper to modu late closed until the supply air temperature rises above 55 F or the damper reaches the minimum position When the supply air temperature is between 55 F and 57 the supply air thermostat has open switches between the T2 and 24 vacterminals This causes the economizer damper to remain in an intermediate open position If the outdoor air alone cannot satisfy the cooling require ments of the conditioned space economizer cooling is inte grated with mechanical cooling providing second stage cool ing The compressor and condenser fan will be energized and the position of the economizer damper will be determined by the supply air temperature 21 When the second stage of cooling is satisfied the compressor and OFM will be deenergized The damper position will be determined by the supply air temperature When the first stage of cooling is satisfied there is a 30 second delay before evaporator shuts off 036 060 The damper will move to fully closed position Cooling Units with PARABLADE Economizer When the outdoor air is above the enthalpy control setting and the room thermostat calls for cooling the compressor contactor is energized to start the compressor and the condenser outdoor fan motor The evaporator indoor fan motor is energized and the economizer damper moves
91. uisance trip ping or premature motor failure Unit warranty will not be affected Bhp Brake Horsepower Input to Fan 5 Use of a field supplied motor may affect wire sizing Contact your local repre NOTES sentative to verify 1 Boldface indicates field supplied drive required See Note 2 6 Interpolation is permissible Do not extrapolate Motor drive range is 760 to 1090 rpm All other rpms require field supplied drive 7 Minimum allowable cfm is 300 cfm ton 2 3 Values include losses for filters unit casing and wet coils 4 Maximum continuous bhp is 1 2 Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence Table 14 581B048 Air Delivery Horizontal Discharge Units BELT DRIVE MOTOR AIRFLOW External Static Pressure in wg Cfm BELT DRIVE MOTOR AIRFLOW External Static Pressure in wg Cfm 1134 0 98 1183 1 10 1218 1 14 LEGEND 6 Maximum continuous bhp is 1 2 Extensive motor and electrical testing on these Bh Brake H units ensures that the full range of the motor can be utilized with confidence p Brake Horsepower Input to Fan Using your fan motors up to the ratings shown will not result in nuisance trip NOTES Dn ping or premature motor failure Unit warranty will not be affected 1 Boldface indicates field supplied drive required See Note 4 7 Use of a field supplied motor may affect wire sizing Co

Download Pdf Manuals

Related Search

Related Contents

仕様書等2（PDF：95KB）  Manuel d`utilisation du Nokia 6267  Conférences Tables rondes Laboratoires Ateliers de production  Thesi R Condensing 45 e 65 Istruzioni per l`uso  Bretford LECTTG3018-RNBO computer desk    

Copyright © All rights reserved. Failed to retrieve file