Johnson Controls 340968-XIM-A-0108 Air Conditioner User Manual
Contents
1. 5 3 5 SE 2 g ee a gt 55 z N 5 g 55 2 2 lt 3 ala 4 oO 5 ae lor SE e p 2 WI CONTROL BOX RCITRC2 A BR 79 214 BR 109 BK LJ GAS VALVE gt jga s lt ss 599 i THF iti 5 El Z z ss 2155 2 z SHE aa gs 8 8 5 lk Js lt lt 3 55 ire O 55 5121212 5 FIGURE 14 TYPICAL WIRING DIAGRAM 018 THRU 060 208 230 1 60 POWER SUPPLY 22 Johnson Controls Unitary Products 340968 XIM A 0108 TYPICAL WIRING DIAGRAM NOTES 6 If both LR and ASCT are present wire 801 BL and 805 SEE FIGURE 14 1 All field wiring to be accomplished following city local and or national codes in effect at time of installation of this unit 2 Caution Label all wires prior to disconnection when ser BL are connected to ASCT 3 If only LR is present wire 801 BL and 805 BL are connected to2. 24 VOLT TRANSFORMER PROGRAMMABLE THERMOSTAT ONLY 22422 COMPRESSORS Units are shipped with compressor mounting factory adjusted for shipping FIGURE 3 TYPICAL FIELD CONTROL WIRING DIAGRAM CONTACTOR 9 FIELD SUPPLIED Sy rooma SINGLE Pees a 4 0 7 D gt PHASE 1 0 2 O S GROUND REFER TO ELECTRICAL Lasoo SUPPLY LUG DATA TABLES TO SIZE THE DISCONNECT FIGURE 4 TYPICAL FIELD POWER WIRING DIAGRAM A CAUTION Loosen compressor mounting bolts a half turn before operating unit Johnson Controls Unitary Products 340968 XIM A 0108 TABLE 3 NATURAL GAS APPLICATION DATA INPUT OUTPUT GAS RATE NUMBER OF AVAILABLE MODELS MBH MBH ae BURNERS INPUT MIN MAX 1 1 2 2 2 1 2 3 3 1 2 TON 45 36 42 2 25 55 2 2 1 2 70 56 65 3 30 60 3 3 1 2 TON 70 56 65 3 25 55 4 5 TON 80 64 74 3 25 55 3 3 1 2 TON 90 72 84 4 30 60 4 5 TON 108 87 100 4 35 65 4 5 TON 135 108 126 5 45 75 1 Heating capacity valid for elevations up to 2000 feet above sea level For elevations above 2 000 feet rated capacity should be reduced by 4 for each 1 000 feet above sea level 2 Based on 1075 BTU Ft 3 3 The air flow must be adjusted to obtain a temperature rise within the range shown Continuous return air temperature should not be below 55 F TABLE 4 PROPANE
3. PS RC2 PRESSURE SWITCH COMPRESSOR START amp OUTDOOR FAN RUN CAPACITOR RS ROLLOUT SWITCH TB4 TERMINAL BLOCK TRANSFORMER 24V 230V FIGURE 15 TYPICAL WIRING DIAGRAM LEGEND Johnson Controls Unitary Products 23 Subject to change without notice Printed in U S A 340968 0108 Copyright 2008 by Johnson Controls Inc All rights reserved Supersedes 286483 0807 Johnson Controls Unitary Products 5005 York Drive Norman OK 73069
4. ambient accessory is available for operation down to 0 F LOCATION Use the following guidelines to select a suitable location for these units 1 Unit is designed for outdoor installation only 2 Condenser must have an unlimited supply of air Where a choice of location is possible position unit on either north or east side of building 340968 XIM A 0108 A CAUTION Excessive exposure of this furnace to contami nated combustion air may result in equipment damage or personal injury Typical contaminants include permanent wave solution chlorinated wastes and cleaners chlorine based swimming pool chemicals water softening chemicals carbon tetrachloride halogen type refrigerants cleaning solvents e g perchloroethylene printing inks paint removers varnishes hydrochloric acid cements and glues antistatic fabric softeners for clothes dryers masonry acid washing materials 3 For ground level installation a level pad or slab should be used The thickness and size of the pad or slab used should meet local codes and unit weight Do not tie the slab to the building foundation 4 For roof top installation be sure the structure will support the weight of the unit plus any field installed components Unit must be installed on a level roof curb or appropriate angle iron frame providing adequate support under the compressor condenser section 5 Maintain level tolerance of unit to 1 8 maxi
5. Power interruptions of any duration shall not cause lockout or any operation reguiring manual intervention FLAME PRESENT WITH GAS OFF If flame is sensed for longer than 4 0 seconds during a period when the gas valve should be closed the control will enter lockout flashing 8 on the LED The control will turn on the inducer blower while the flame is present GAS VALVE STUCK OPEN OR CLOSED If either or both Pilot and Main Gas valve outputs are sensed to be off for more than 1 second when commanded to be on the control board shuts off all outputs and enters a hard lockout flashing 9 on the LED If the Pilot valve or Main valve output is sensed to be energized for more than 1 second when commanded to be off the control de energizes the induced draft motor if flame is not present to attempt to open the pressure switch to de energize the gas valve If the pilot or main gas valve is still sensed as energized after the inducer has been off for 5 seconds the control re energizes the inducer to attempt to vent the unburned gas In either case the control enters a hard lockout flashing 9 on the LED If the pilot or main valve becomes Un Welded the inducer will de energize but the control will remain in a hard lockout and not respond to any thermostat demands The only way to recover from a hard lockout is to remove and then reapply 24VAC power to the control board FLAME SENSE CIRCUIT FAILURE If the control detects an interna
6. 10 ROLLOUT 14 8 10 POWER e 14 9 UNIT DIMENSIONS 11 FLAME PRESENT WITH GAS OFP aa 14 10 UNITMINIMUM CLEARANCES 11 GAS VALVE STUCK OPEN OR CLOSE Du a 14 11 IGNITION CONTROL BOARD FLASH CODES 15 FLAME SENSE CIRCUIT FAILURE 14 12 GASE RATE CUBIC FEET PER HOUR 18 SAFETY CONTROLS s s 14 13 SUPERHEAT CHARGING TABLE FOR DNAO18 7 19 COOLING 15 14 SUPERHEAT CHARGING TABLE FOR DNAO24 22 20 CIRCULATING FAN 15 15 SUPERHEAT CHARGING TABLE FOR DNAO30 20 START UP 15 16 SUPERHEAT CHARGING TABLE FOR DNAOS6 20 PRE START CHECK LIST WU m 15 17 SUPERHEAT CHARGING TABLE FOR DNA042 21 OPERATING INSTRUCTIONS 15 18 SUPERHEAT CHARGING TABLE FOR DNA048 21 TO TURN OFF GAS TO UNIT ae ee es _ 15 19 SUPERHEAT CHARGING TABLE FOR DNA060 21 POST START CHECK LIST 5 16 MANIFOLD GAS PRESSURE ADJUSTMENT 16 BURNER INSTRUCTIONS 16 PILOT INSTRUCTIONS 16 ADJUSTMENT OF TEM
7. 2 Adjust the pilot adjustment screw to achieve the proper pilot flame 3 Replace the pilot adjustment cover screw after the pilot flame is set To remove the pilot assembly 1 Disconnect the wiring from the control board to the pilot assembly 2 Remove the two 2 8 screws holding the pilot assem bly in place 3 Remove the pilot assembly ADJUSTMENT OF TEMPERATURE RISE _ BIUH Output Degrees F Temp Rise 108 x CFM OR Output EM e p 5 1 08 Degrees F Rise The temperature rise or temperature difference between the return air and the heated air from the furnace must lie within the range shown on the rating plate and the data in Tables 3 and 4 After the temperature rise has been determined the CFM can be calculated as follows After about 20 minutes of operation determine the furnace temperature rise Take readings of both the return air and the heated air in the ducts about six feet from the furnace where they will not be affected by radiant heat Increase the blower CFM to decrease the temperature rise decrease the blower CFM to increase the rise DIRECT DRIVE BLOWER All units have direct drive multi speed blower motors Refer to the unit wiring diagram and connect the blower motor for the desired motor speed CHECKING GAS INPUT NATURAL GAS 1 Turn off all other gas appliances connected to the gas meter 2 With the furnace turned on measure the time needed for o
8. 090 90 000 BTUH 110 110 000 BTUH FACTORY Johnson Controls Unitary Products INSTALLATION LIMITATIONS These units must be installed in accordance with the follow ing national and local safety codes 1 National Electrical Code ANSI NFPS No 70 or Canadian Electrical Code Part 1 C22 1 latest editions 2 National Fuel Gas Code 7223 1 or CAN CGA B149 1 or 2 Installation Code 3 Local gas utility requirements 4 Local plumbing and waste water codes and other appli cable local codes Refer to Table 1 for unit application data and to Table 2 for gas heat application data If components are to be added to a unit to meet local codes they are to be installed at the dealer s and or the customer s expense Size of unit for proposed installation should be based on heat loss heat gain calculations made in accordance with industry recognized procedures identified by the Air Conditioning Contractors of America TABLE 1 UNIT APPLICATION DATA Voltage Variation Min 208 230V Wet Bulb Temperature F of Air on Evaporator Coil Min Max Dry Bulb Temperature F of Air on Condenser Coil 3 Max 187 253 57 72 45 120 1 Rated in accordance with ARI Standard 110 utilization range 1 transformer primary tap must be moved from the 230 volt connection to the 208 volt connection for low voltage applica tions of 208 volt and below 3
9. 2 5 6 6 1 9 6 13 2 16 7 20 2 115 gt 8 0 11 8 15 7 19 6 Johnson Controls Unitary Products 21 340968 XIM A 0108 92 ye 20 Or oe p 22 5 5 4 s On 255 5 DI TH REV RC2 BR PTCR E COPPER CONDUCTORS ONLY 9 EMENTARY DIAGRAM OPE BEFORE SERVIC avoi 2 dud 34 901 Fd 8 002 G281329A 109 BK 24 SEC 40 VA CAUTION UNIT size pevic ALS lt N HEATING TRANSFORMER SPARK LS ED WITH CRANKCASE Qs P o Bi 244 PR 245 F 71940 BLK _ Q gt OPTIONAL S P CONFIGURATION Ar AN PRP AC T BL 80 HEAT CONT S 242 Ese 1
10. M1 coil If only ASCT is present wire 202 Y is connected to ASCT 3 If neither LR or ASCT are present wire 202 Y is connected to M1 coil as shown 7 Shunt contact also used with crankcase heater vicing controls Wiring errors can cause improper and optional dangerous operation If any of the wire as supplied with 8 Select indoor blower speed to remain within the temper this unit must be removed it must be replaced with type ature rise range on the nameplate in heating 105 C 600V wire or equivalent clearly renumbered for identification Verify proper operation after servicing 3 Motors inherently protected 4 Factory wired for 230V For 208V operation move wire 107 PR to 208V Tap on transformer T1 5 See unit nameplate for maximum fuse size and or circuit A CAUTION Open all disconnects before servicing this unit breaker size and minimum circuit ampacity LEGEND ALS AUXILARY LIMIT SWITCH ASCT ANTI SHORT CYCLE TIMER OPTIONAL BR CB BLOWER RELAY CIRCUIT BREAKER CCH CRANK CASE HEATER OPTIONAL COMPR COMPRESSOR DRAFT MOTOR FAN CONTROL BOARD GROUND FREEZE STAT SWITCH OPTIONAL HIGH PRESSURE SWITCH OPENS 380 PSIG DM FCB GND 79 INDOOR MOTOR LOW PRESSURE SWITCH OPENS 7 PSIG r LIMIT SWITCH 1 LOCK OUT RELAY OPTIONAL CONTACTOR COMPR AND OD FAN ODFAN OUTDOOR FAN MOTOR
11. is being run 4 Knowing the pressure drop across a dry coil the actual CFM through the unit can be determined from the curve in Coil Delta P vs Supply Air CFM figure AWARNING Failure to properly adjust the total system air quan tity can result in extensive system damage SECONDS SIZE OF TEST DIAL FOR ONE REV 1 2 CU FT 1 CU 10 180 360 12 150 300 14 129 257 16 113 225 18 100 200 20 90 180 22 82 164 24 75 150 26 69 138 28 64 129 30 60 120 32 56 113 34 53 106 36 50 100 38 47 95 40 45 90 42 43 86 44 41 82 46 39 78 48 37 75 50 36 72 52 35 69 54 34 67 56 32 64 58 31 62 60 30 60 EXAMPLE actual measurement it takes 38 seconds for the hand on the 1 cubic foot dial to make a revolution with just a 100 000 BTUH furnace running Using this information locate After readings have been obtained remove the tubes and reinstall the two 14 inch plugs removed in Step 1 De energize the compressors before taking any test mea surements to ensure a dry indoor coil 38 seconds in the first column of Table 12 Read across to the column headed 1 Cubic Foot where you will see that 95 cubic feet of gas per hour are consumed by the furnace at that rate Multiply 95 x 1050 the BTU rating of the gas obtained from the local gas company The result is 99 750 BTUH which is close to the 100 000 BTUH rating of the furnace 18 Johnson Controls Unitary Products 340968 X
12. 267 504 1 039 50 114 237 448 913 60 103 217 409 834 70 96 196 378 771 80 89 185 346 724 FIGURE 5 EXTERNAL SUPPLY CONNECTION 90 83 173 322 677 EXTERNAL SHUT OFF 100 78 162 307 630 1 Maximum capacity of pipe in thousands of BTU per hour based upon a pressure drop of 0 5 inch water column 8 Johnson Controls Unitary Products 340968 XIM A 0108 A CAUTION If flexible stainless steel tubing is allowed by the authority having jurisdiction wrought iron or steel pipe must be installed at the gas valve and extend a minimum of two 2 inches outside of the unit casing AWARNING Natural gas may contain some propane Propane being a excellent solvent will quickly dissolve white lead or most standard commercial com pounds Therefore a special pipe dope must be applied when wrought iron or steel pipe is used Shellac base compounds such as gaskoloc or sta lastic and compounds such as rectorseal 5 Clyde s or John Crane may be used 4 All piping should be cleaned of dirt and scale by ham mering on the outside of the pipe and blowing out the loose dirt and scale Before initial start up be sure that all of the gas lines external to the unit have been purged of air 5 gas supply should be a separate line and installed accordance with all safety codes as prescribed under Limitations After the gas connections have been com pleted open the main shut off valve admitting nor
13. 29 2 29 7 30 3 30 9 31 5 70 9 5 12 5 15 5 18 5 21 5 24 5 27 5 28 2 28 8 29 4 30 1 75 5 2 8 6 12 1 15 5 19 0 22 4 25 9 26 6 27 3 28 0 28 7 80 8 7 12 5 16 4 20 3 24 2 25 0 25 8 26 5 27 3 85 s 5 2 9 6 13 9 18 3 22 6 23 4 24 2 25 1 25 9 90 2 7 8 11 9 16 1 20 3 21 5 22 7 23 8 25 0 95 6 0 10 0 14 0 18 0 19 5 21 1 22 6 24 2 100 8 4 12 1 15 9 17 7 19 5 21 3 23 1 105 6 9 10 3 13 8 15 8 17 9 20 0 22 0 110 5 3 8 5 11 7 14 0 16 3 18 7 21 0 115 6 7 9 6 12 2 14 8 17 3 19 9 OUTDOOR TEMP F INDOOR WB TEMP F 55 57 59 61 63 65 67 69 71 73 75 65 13 7 16 9 20 1 23 3 26 6 29 8 33 0 33 5 34 0 34 5 35 0 70 10 8 14 2 17 7 214 24 5 28 0 31 4 32 1 32 8 33 5 34 2 75 7 8 11 5 15 2 18 8 22 5 26 2 29 8 30 7 31 6 32 6 33 5 80 8 8 12 7 16 6 20 5 24 4 28 2 29 4 30 5 31 6 32 7 85 6 1 10 2 14 3 18 4 22 6 26 7 28 0 29 3 30 6 32 0 90 7 3 11 5 15 7 19 9 24 1 25 9 27 7 29 5 31 3 95 8 6 13 0 17 3 21 6 23 8 26 1 28 3 30 6 100 6 9 10 7 14 5 18 3 21 2 24 0 26 9 29 7 105 5 1 8 4 11 8 15 1 18 5 22 0 25 4 28 9 110 6 2 9 0 11 8 15 9 19 9 24 0 28 0 115 6 2 8 5 13 2 17 9 22 5 27 2 ouTDOOR UPERHEAT AT COMPRE R SUCTION F AIRFLOW 400 CFM TEMP F INDOOR WB TEMP F 55 57 59 61 63 65 67 69 71 73 75 65 27 1 28 4 29 7 31 1 32 4 33 7 35 0 35 9 36
14. 3 7 16 9 20 3 110 7 8 11 2 14 7 18 1 115 z E 5 2 8 8 12 4 16 0 TABLE 18 SUPERHEAT CHARGING TABLE FOR DNA048 OUTDOOR SUPERHEAT AT COMPRESSOR SUCTION F AIRFLOW 400 CFM TEMP F INDOOR WB TEMP F 55 57 59 61 63 65 67 69 71 73 75 65 20 9 21 8 22 7 23 6 24 4 25 3 26 2 27 4 28 6 29 8 31 0 70 17 6 18 7 19 7 20 7 21 7 22 7 23 7 25 2 26 6 28 1 29 6 75 14 4 15 5 16 6 17 8 18 9 20 0 21 2 22 9 24 7 26 4 28 2 80 11 1 12 4 13 6 14 9 16 1 17 4 18 6 20 7 22 7 24 8 26 8 85 7 8 9 2 10 6 12 0 13 3 14 7 16 1 18 4 20 8 23 1 25 4 90 5 8 7 0 8 2 9 3 10 5 11 7 12 9 15 7 18 6 21 5 24 4 95 5 8 6 7 7 7 8 6 9 6 13 0 16 5 19 9 23 3 100 54 6 0 6 7 74 8 0 11 6 15 2 18 7 22 3 105 5 3 5 7 6 1 6 5 10 2 13 9 17 6 21 3 110 8 7 12 6 16 4 20 3 115 7 3 11 3 15 3 19 3 TABLE 19 SUPERHEAT CHARGING TABLE FOR DNAO60 UPERHEAT COMPRESSOR SUCTION F AIRFLOW 400 CFM TEMP F INDOOR WB TEMP F 55 57 59 61 63 65 67 69 71 73 75 65 7 0 9 2 11 4 13 6 15 9 18 1 20 3 21 8 23 2 24 7 26 1 70 6 1 8 4 10 7 13 0 15 2 17 5 19 8 21 2 22 7 24 1 25 6 75 5 3 7 6 9 9 12 3 14 6 16 9 19 3 20 7 22 2 23 6 25 0 80 6 8 9 2 11 6 14 0 16 3 18 7 20 2 21 6 23 1 24 5 85 6 0 8 4 10 9 13 3 15 8 18 2 19 6 21 1 22 5 23 9 90 6 5 8 7 10 8 12 9 15 1 17 1 19 1 21 1 23 1 95 6 5 8 3 10 1 11 9 14 5 17 1 19 7 22 3 100 5 9 7 3 8 6 10 0 12 9 15 8 18 7 21 6 105 5 3 6 2 71 8 0 11 3 14 5 17 7 20 9 110 5 5
15. 8 37 6 38 5 70 23 3 24 8 26 2 27 7 29 2 30 6 32 1 33 5 34 9 36 4 37 8 75 19 5 21 1 22 7 24 4 26 0 27 6 29 2 31 2 33 1 35 1 37 1 80 15 7 17 5 19 2 21 0 22 8 24 5 26 3 28 8 31 3 33 8 36 3 85 11 9 13 8 15 7 17 6 19 6 21 5 23 4 26 5 29 5 32 6 35 6 90 8 6 10 6 12 6 14 6 16 6 18 6 20 6 24 1 27 6 31 1 34 6 95 5 3 7 4 9 5 11 5 13 6 15 7 17 8 21 7 25 7 29 7 33 7 100 5 6 7 6 9 6 11 6 13 6 15 6 20 1 24 5 28 9 33 4 105 5 7 7 6 9 6 11 5 13 5 18 4 23 3 28 2 33 1 110 2 5 6 7 5 9 4 11 3 16 7 22 1 27 4 32 8 115 5 5 7 4 9 2 15 0 20 9 26 7 32 5 20 Johnson Controls Unitary Products 340968 XIM A 0108 TABLE 17 SUPERHEAT CHARGING TABLE FOR DNA042 SUPERHEAT AT COMPRESSOR SUCTION F AIRFLOW 400 CFM OUTDOOR TEMP F INDOOR WB TEMP F 55 57 59 61 63 65 67 69 71 73 75 65 18 0 19 7 21 4 23 0 24 7 26 3 28 0 29 1 30 2 31 3 32 4 70 13 4 15 3 17 3 19 3 21 2 23 2 25 2 26 6 28 1 29 6 31 1 75 8 7 10 9 13 2 15 5 17 8 20 0 22 3 24 2 26 1 28 0 29 9 80 6 6 9 1 11 7 14 3 16 9 19 5 21 7 24 0 26 3 28 6 85 5 1 7 9 10 8 13 7 16 6 19 3 21 9 24 6 27 3 90 6 7 9 3 11 9 14 6 17 4 20 2 23 1 25 9 95 5 5 7 8 10 2 12 5 15 5 18 5 21 5 24 5 100 6 3 8 0 9 8 12 9 16 1 19 2 22 4 105 5 9 741 10 3 1
16. AFFINITY SERIES SINGLE PACKAGED GAS ELECTRIC AIR COOLED AIR CONDITIONERS 1 5 THROUGH 5 NOMINAL TON DNA 018 042 024 048 030 060 036 EKPORT CZN 2 SS ESSE Z 9 i 22 2 0 NI 5 2 SH SEY 070 DESIGN CERT FES ISO 9001 Certified Quality Management System So we 4000 REGISTR 340968 0108 340968 XIM A 0108 TABLE OF CONTENTS GENERAL 3 LIST OF FIGURES INSPECTION ai 3 RENEWAL 6 3 APPROVALS 3 1 PRODUCT NOMENCLATURE 3 4 2 UNIT CENTER OF GRAVITY 5 LIMITATIONS 4 3 TYPICAL FIELD CONTROL WIRING DIAGRAM 6 LOCATION 4 4 TYPICAL FIELD POWER WIRING DIAGRAM 6 RIGGING OR 4 5 EXTERNAL SUPPLY CONNECTION CLEARANCES 5 EXTERNAL SHUT OFF 8 DUCTWORK 5 6 FLUE VENTOUTLETAIRHOOD 9 eee AA 5 7 UNIT DIMENSIONS 11 CONDENSATE 5 5 UNITDIMENSIONSEBONTAS BOTTOM si 1 SERVICEACCESS 9 UNIT DIMENSIONS BACK amp BOTTOM 12 THERMOSTAT 6 10 GASVALVE F
17. ALA LRA pLa AMPACITY SIZE FACTOR FLA AMPS 018 208 230 1 60 187 253 9 0 48 0 Ti 22 145 20 20 96 20 024 208 230 1 60 187 252 115 600 Ti 22 177 25 25 96 40 030 208 230 1 60 187 253 147 730 22 217 30 30 96 40 036 208 230 1 60 187 253 172 940 1 1 3 5 26 2 35 35 96 40 042 208 230 1 60 187 253 154 860 11 3 5 23 9 30 30 96 40 048 208 230 1 60 187 253 244 1400 13 7 0 38 8 50 50 96 40 060 208 230 1 60 187 253 289 1750 13 7 0 444 60 60 96 40 1 Utilization range A in accordance with ARI Standard 110 2 Dual element time delay type 10 Johnson Controls Unitary Products 340968 XIM A 0108 VENT AIR OUTLET HOOD BLOWER SERVICE ACCESS COMPARTMENT PANEL CONDENSER COIL GAS SUPPLY 1 1 4 DIA HOLE 1 2 NPTI CONNECTION UNIT CONDENSATE CONNECTION 3 4 TRAP RECOMMENDED B L 2 HIGH VOLTAGE CONN 1 3 8 DIA 7 KNOCKOUT HIGH VOLTAGE 74 CONN 7 8 DIA Io REFRIGERANT KNOCKOUT i CONNECTIONS GAS SUPPLY 1 1 4 DIA W COMBUSTION AIR KNOCKOUT 1 2 NPTI X gt 0 TEN INLET LOUVERS CONNECTION ahs FRONT LOW VOLTAGE CONN 1 3 8 DIA KNOCKOUT GAS ELECTRIC CONTROL X 7 8 HOLE SERVICE ACCESS 47 1 4 OVERALL COMPARTMENT PANEL OVERALL aaa All dimensions inches They are subject to change with out notice Certified dimensions will be pro
18. IGURE 10 GAS VALVE FRONT 340968 XIM A 0108 Pressure Tap FIGURE 11 GAS VALVE REAR Adjust as follows 1 Remove the cap from the valve body See Figure 10 for location 2 decrease the gas pressure turn the adjusting screw counterclockwise 3 increase the gas pressure turn the adjusting screw clockwise NOTE The correct manifold pressure for natural gas fur naces is 3 5 IWG The correct manifold pressure for propane LP is 10 0 BURNER INSTRUCTIONS To check or change the burners CLOSE THE MAIN MAN UAL SHUT OFF VALVE AND SHUT OFF ALL POWER TO THE UNIT 1 Remove the two 2 8 screws holding each burner in place 2 Remove the burner assembly from the manifold assem bly by moving the burner assembly forward turn at an angle and pull back 3 Burners are now accessible for service PILOT INSTRUCTIONS To check adjust or remove the pilot assembly CLOSE THE MAIN MANUAL SHUT OFF VALVE AND SHUT OFF ALL POWER TO THE UNIT The pilot flame should envelope 3 8 inch of the end of the flame sensor and not contain any yellow color see Figure 12 16 Johnson Controls Unitary Products 340968 XIM A 0108 3 8 min NL gt Spark Ignitor Pilot Flame Sensor FIGURE 12 PROPER FLAME ADJUSTMENT To adjust the pilot flame 1 Remove the pilot adjustment cover screw
19. IM A 0108 DNA018 DNA Coil Delta P vs Airflow DNA024 30 DNA042 DNA048 60 DNA036 DNA024 30 5 0 042 DNA048 60 0 018 400 600 800 1000 1200 1400 1600 1800 2200 Airflow FIGURE 13 DNA COIL DELTA P VS AIRFLOW TABLE 13 SUPERHEAT CHARGING TABLE FOR DNA018 OUTDOOR UPERHEAT AT R SUCTION AIRFLOW 400 TEMP F INDOOR WB TEMP F 55 57 59 61 63 65 67 69 71 73 75 65 17 1 19 5 21 9 24 4 26 8 29 3 31 7 32 7 33 7 34 6 35 6 70 13 6 16 2 18 8 21 5 24 1 26 8 29 4 30 6 31 8 33 1 34 3 75 10 1 12 9 15 7 18 6 21 4 24 3 27 1 28 6 30 0 31 5 32 9 80 6 6 9 6 12 7 15 7 18 7 21 8 24 8 26 5 28 2 29 9 31 6 85 6 3 9 6 12 8 16 0 19 3 22 5 24 4 26 4 28 3 30 2 90 6 8 9 9 13 0 16 1 19 3 21 6 24 0 26 4 28 8 95 7 1 10 0 13 0 16 0 18 8 21 7 24 5 27 4 100 7 1 9 6 12 0 15 4 18 8 22 3 25 7 105 6 1 8 0 12 0 16 0 20 0 24 0 110 8 6 13 1 17 7 22 2 115 5 1 10 3 15 4 20 5 Johnson Controls Unitary Products 19 TABLE 14 SUPERHEAT CHARGING TABLE FOR DNA024 340968 XIM A 0108 SUPERHEAT AT COMPRESSOR SUCTION F AIRFLOW 400 CFM OUTDOOR TEMP F INDOOR WB TEMP F 55 57 59 61 63 65 67 69 71 73 75 65 13 9 16 5 19 0 21 5 24 1 26 6
20. LP GAS APPLICATION DATA INPUT OUTPUT GAS RATE NUMBER OF AVAILABLE ON MODELS MBH MBH BURNERS INPUT MIN MAX 1 1 2 2 2 1 2 3 3 1 2 45 36 18 2 25 55 2 2 1 2 70 56 28 3 30 60 3 3 1 2 TON 70 56 28 3 25 55 4 5 TON 80 64 32 3 25 55 3 3 1 2 TON 90 72 36 4 30 60 4 5 TON 108 87 43 4 35 65 4 5 TON 135 108 54 5 45 75 1 Propane applications are accomplished by field installation of a Propane Conversion Accessory 1 0807 for 1 1 2 thru 3 1 2 ton units with 33 1 2 tall cabinets and Model 1 0808 for 4 and 5 ton units with 41 1 2 tall cabinets 2 Heating capacity valid for elevations to 2 000 feet above sea level For elevations above 2 000 feet rated capacity should be reduced by 4 for each 1 000 feet above sea level 3 Based on 2500 BTU Ft 4 The air flow must be adjusted to obtain a temperature rise within the range shown Continuous return air temperatures should not be below 55 F Johnson Controls Unitary Products GAS PIPING Proper sizing of gas piping depends on the cubic feet per hour of gas flow reguired specific gravity of the gas and the length of run National Fuel Gas Code 2223 1 or CAN CGA 149 1 or 2 should be followed in all cases unless super seded by local codes or gas company requirements Refer to Tables 5 and 6 The heating value of the gas may differ with locality The value should be checked with the local gas uti
21. PERATURE RISE 17 DIRECT DRIVE 17 CHECKING GAS 17 NATURAL 6 17 CHECKING SUPPLY AIR CFM 18 TYPICAL WIRING DIAGRAM NOTES 23 2 Johnson Controls Unitary Products 340968 XIM A 0108 GENERAL YORK Model DNA units are cooling heating air conditioners designed for outdoor installation Only gas piping electric power and duct connections are required at the point of installation The gas fired heaters have spark to pilot ignition The tubular heat exchangers are aluminized steel This appliance is not to be used for temporary heating of buildings or structures under construction Installer should pay particular attention to the words NOTE CAUTION and WARNING NOTES are intended to clarify or make the installation easier CAUTIONS are given to prevent equipment damage WARNINGS are given to alert the installer that personal injury and or equipment damage may result if installation procedure is not handled properly INSPECTION As soon as a unit is received it should be inspected for possi ble damage during transit If damage is evident the extent of the damage should be noted on the carrier s freight bill A separate request for inspection by the carrier s agent should be made in writing RENEWAL PARTS Contact your local York parts distribution center for autho rized replace
22. RONT 16 AND CONTROL 6 11 16 COMPRESSORS 6 12 PROPER FLAME ADJUSTMENT 17 GAS PIPING aa OO Geena ne PAY Oe eed 8 13 COIL DELTA P VS AIRFLOW 19 GAS CONNECTION 8 14 TYPICAL WIRING DIAGRAM DNA 018 THRU 060 208 230 1 60 POWER 22 HEATING ia AGRAM LEGEND 58 PRESSURE SWITCH PROVING 13 13 LIST OF TABLES IGNITION TRIAL PERIOD 13 PILOT FLAME STABILIZATION PERIOD 13 4 APPLICATION 4 BLOWER ON DELAY 13 2 UNIT WEIGHTS AND CENTER OF GRAVITY 5 MAIN BURNER OPERATION 13 3 NATURAL GAS APPLICATION DATA 7 POST PURGE 444 14 4 LP GAS APPLICATION DATA 7 AEAT BLOWER 14 5 NATURAL GAS PIPE SIZINGCHART 8 LOCKOUT RO a WL a a 14 6 PROPANE LP GAS PIPE SIZING CHART 8 14 7
23. culating fan to run at the cool speed If a call for COOL occurs the circulating fan continues to run at the cool speed If a call for HEAT occurs the circulating fan switches to heat speed after a 30 second delay When the thermostat ends the call for FAN the thermostat terminal G is de energized de energizing the circulating fan START UP PRE START CHECK LIST Complete the following checks before starting the unit 1 Check the type of gas being supplied Be sure that it is the same as listed on the unit nameplate 2 Make sure that the vent outlet air hoods has been prop erly installed OPERATING INSTRUCTIONS STOP Read the information on the unit safety label Set the thermostat to the OFF position Turn off all electrical power to the unit DO NOT try to light the burners by hand This appliance is equipped with an ignition device which automatically lights the burners 5 Remove the access panel 6 the gas valve switch to the OFF position 7 Wait five 5 minutes to clear out any gas If you then smell gas STOP Follow B in the information on the unit safety label If you don t smell gas go to the next step 8 Turn the gas valve switch to the ON position 9 Replace the control access panel 10 Turn on all electric power to the unit 11 Set the thermostat to the desired setting 12 If the unit will not operate follow the instructions To Turn Off Gas To Appliance and call y
24. demand for heat is removed the control de energizes the gas valve energizes the blower on heat speed and initiates a post purge and heat blower off delay MAIN BURNER OPERATION High heat warm up Two stage models run high heat for the first 60 seconds fol lowing Pilot Flame Stabilization period regardless of W2 demand If W2 is not energized at the end of this 60 second period the control de energizes the high gas output and steps the inducer to low speed If W2 is energized the control remains on high heat There is no high heat warm up on single stage models Low heat The control board keeps the pilot gas valve main gas valve and induced draft motor energized while continuously moni toring the call for heat low pressure switch and flame status If the call for heat W1 is lost the control de energizes the gas valve and begins post purge If low pressure switch opens the control de energizes the gas valve and begins pressure switch proving mode If flame is lost the control de energizes the gas valve within 2 0 second and counts the flame loss If flame has been lost more than 16 times within the same call for heat the control board locks out flashing 5 on the LED If flame has been lost less than 16 times the control attempts re ignition after a 300 second inter purge period High heat If the W2 terminal was energized more than 1 second before W1 at the start of the call for heat and remains continuously energi
25. l board begins a call for heat when W1 is ener gized connected to R The control ignores W2 until pilot ignition has been established The control checks to see if the pressure switch is open If the pressure switch is closed the control board flashes 3 on the LED and waits indefinitely for it to open When the pressure switch is sensed as open the control begins pressure switch proving period If the call for heat is lost the control goes back to Standby PRESSURE SWITCH PROVING The control board energizes the induced draft motor High speed for 2 stage model and waits for the low pressure switch to close When the low pressure switch closes the control begins Pre purge period If the call for heat is lost the control de energizes the inducer without post purge and returns to standby If the low pressure switch does not close within 10 seconds of inducer energizing the control board flashes 2 on the LED If the pressure switch does not close within 5 minutes of inducer energizing the control shuts off the inducer for 30 seconds then energizes the inducer for another 5 minute try to close the pressure switch This cycle continues indefinitely until either the pressure switch is proved closed or the call for heat ends PRE PURGE The control board monitors the low pressure switch and ensures it remains closed during pre purge If the pressure switch opens the control goes back to pressure switch prov ing mode The contr
26. l hardware failure in the flame sense circuit it shuts off all outputs and enters a hard lockout flashing 10 on the LED The control will not respond to thermostat demands during a hard lockout The only way to recover from a hard lockout is to remove and then reapply 24VAC power to the control If problem persist after removal and reapplication of 24VAC power the board may need to be replaced SAFETY CONTROLS The control circuit includes the following safety controls 1 Limit Switch LS This control is located inside the heat exchanger compartment and is set to open at the temperature indicated in the Temperature Controls Table of the unit wiring diagram It resets automatically The limit switch operates when a high temperature condition caused by inadequate supply air flow occurs thus shut ting down the ignition control and closing the main gas valve and energizing the blower 14 Johnson Controls Unitary Products 340968 XIM A 0108 2 Pressure Switch PS If the draft motor should fail the pressure switch prevents the ignition controls and gas valves from being energized 3 Flame Sensor The flame sensor and controls are located per Proper Flame Adjustment Figure 12 If an ignition control fails to detect a signal from the flame sen sor indicating the pilot flame is properly ignited then the main gas valve will not open 4 Rollout Switch RS This switch is located in the burner vestibule In the event
27. lity NOTE There may a local gas utility requirement specify ing a minimum diameter for gas piping All units require a 1 2 inch pipe connection at the gas valve GAS CONNECTION The gas supply line can be routed through the hole located on the left side of the unit Refer to Figure 7 to locate these access openings Typical supply piping arrangements are shown in Figure 5 Gas piping recommendations 1 A drip leg and a ground joint union must be installed the gas piping 2 When required by local codes a manual shut off valve may have to be installed outside of the unit 340968 XIM A 0108 TABLE 5 NATURAL GAS PIPE SIZING CHART NOMINAL INCHES IRON PIPE SIZE LENGTH INEEEY 1 2 3 4 1 1 1 4 10 132 278 520 1 050 20 92 190 350 730 30 73 152 285 590 40 63 130 245 500 50 56 115 215 440 60 50 105 195 400 70 46 96 180 370 80 43 90 170 350 90 40 84 160 320 100 38 79 150 305 1 Maximum capacity of pipe in cubic feet of gas per hour based upon a pressure drop of 0 3 inch water column and 0 6 specific gravity gas TABLE 6 PROPANE LP GAS PIPE SIZING 3 Use wrought iron or steel pipe for all gas lines Pipe dope CHART should be applied sparingly to male threads only NOMINAL INCHES IRON PIPE SIZE LENGTH GAS VALVE 1 2 3 4 1 1 1 4 10 275 567 1 071 2 205 NAK VAROS SOBR 20 189 393 732 1 496 30 152 315 590 1 212 40 129
28. mal gas pressure to the mains Check all joints for leaks with soap solution or other material suitable for the purpose NEVER USE A FLAME 6 The furnace and its individual manual shut off valve must be disconnected from the gas supply piping system dur ing any pressure testing of that system at test pressures in excess of 1 2 psig 3 48 kPa The furnace must be isolated from the gas supply piping sys tem by closing its individual manual shut off valve during any pressure testing of the gas supply piping system at test pres sures equal to or less than 1 2 psig 3 48 kPa FLUE VENT HOOD The flue vent hood with screen is not shipped attached This hood must be installed to assure proper unit operation The hood must be fastened to the outside of the side gas control electrical compartment with the screws provided in the bag attached to the inside of the gas control electrical compart ment see Figure 6 AWARNING Flue hood surfaces may be hot VENT OUTLET SCREEN FLUE VENT OUTLET AIR HOOD FIGURE 6 FLUE VENT OUTLET AIR HOOD A CAUTION The flue exhaust hood must be properly installed and within the recommended clearances Further communications and action must be given to the home or building owner s to eliminate any unau thorized human contact around this area during the heating cycle Flue hood surface and immedi ate area are designed to operate at high tempera tures during
29. ment parts PRODUCT CATEGORY D Single Package Air Conditioner PRODUCT GENERATION 2 2nd Generation 3 3rd Generation PRODUCT IDENTIFIER NA 10 SEER Gas Heat Electric NOMINAL COOLING CAPACITY MBH 018 18 000 BTUH 024 24 000 BTUH 030 30 000 BTUH 036 36 000 BTUH 042 42 000 BTUH 060 60 000 BUTH FIGURE 1 PRODUCT NOMENCLATURE INSTALLED GAS HEAT N Natural Gas Heat Installed APPROVALS Design certified by CGA and AGA listed as follows 1 For use as a forced air furnace with cooling unit 2 For outdoor installation only 3 For installation directly on combustible flooring or in U S on wood flooring or Class A B C roof covering material 4 For installation on combustible material 5 For use with natural gas and or propane LP gas Not suitable for use with conventional venting systems A CAUTION This product must be installed in strict compliance with the enclosed installation instructions and any applicable local state and national codes includ ing but not limited to building electrical and mechanical codes AWARNING Improper installation may create a condition where the operation of the product could cause personal injury or property damage VOLTAGE CODE 06 208 230 1 60 NOMINAL GAS HEATING OUTPUT CAPACITY 036 36 000 BTUH 056 56 000 BTUH 065 65 000 BTUH 072 72 000 BTUH
30. mum RIGGING OR HANDLING Care must be exercised when moving the unit Do not remove any packaging until the unit is near the place of installation Rig unit with slings placed under the unit Spreader bars of sufficient length should be used across the top of the unit AWARNING Before lifting a unit make sure that its weight is dis tributed equally on the cables so that it will lift evenly Units may also be moved or lifted with a fork lift Slotted openings in the skid are provided for this purpose Forks must pass completely through the base Refer to Table 2 for unit weights and to Figure 2 for approxi mate center of gravity Johnson Controls Unitary Products 340968 XIM A 0108 TABLE 2 UNIT WEIGHTS AND CENTER OF GRAVITY SHIPPING OPERATING CORNER WEIGHTS WEIGHT WEIGHT LOCATION LBS LBS LBS D 365 360 oT 788 789 92 365 360 91 88 89 92 395 390 98 95 96 99 400 395 100 96 98 101 415 410 104 100 101 105 475 470 119 115 116 120 480 475 120 116 117 122 GRAVITY FIGURE 2 UNIT CENTER OF GRAVITY CLEARANCES All units reguire certain clearances for proper operation and service Refer to Table 10 for the clearances reguired for combustion construction servicing and proper unit opera tion AWARNING Do not permit overhanging structure
31. ne revolution of the hand on the smallest dial on the meter A typical gas meter usually has a 1 2 or a 1 cubic foot test dial 3 Using the number of seconds for each revolution and the size of the test dial increment find the cubic feet of gas consumed per hour from Table 12 If the actual input is not within 5 of the furnace rating with allowance being made for the permissible range of the regu lator setting replace the orifice spuds with spuds of the proper size NOTE To find the BTU input multiply the number of cubic feet of gas consumed per hour by the BTU content of the gas in your particular locality Contact your gas company for this information since it varies widely from city to city Johnson Controls Unitary Products 17 TABLE 12 GASE RATE CUBIC FEET PER HOUR 340968 XIM A 0108 CHECKING SUPPLY AIR CFM To check the supply air CFM after the initial balancing has been completed 1 Remove the two inch dot plugs in the duct panel 2 Insert at least 8 inches of 4 inch tubing into each of these holes for sufficient penetration into the airflow on both sides of the indoor coil 3 Using an inclined manometer determine the pressure drop across the dry evaporator coil Since the moisture on an evaporator coil may vary greatly measuring the pressure drop across a wet coil under field conditions would be inaccurate To ensure a dry coil the compres sors should be deactivated while the test
32. nstructions enclosed with the thermostat for general installation procedure Four color coded insulated wires minimum 18 AWG should be used to connect thermostat to unit See Figure 3 POWER AND CONTROL WIRING Field wiring to the unit must conform to provisions of the cur rent N E C ANSI NFPA No 70 or C E C and or local ordi 340968 XIM A 0108 nances The unit must be electrically grounded in accordance with local codes or in their absence with the N E C C E C Voltage tolerances which must be maintained at the com pressor terminals during starting and running conditions are indicated on the unit Rating Plate and Table 8 The wiring entering the cabinet must be provided with mechanical strain relief A fused disconnect switch should be field provided for the unit If any of the wire supplied with the unit must be replaced replacement wire must be of the type shown on the wiring diagram Electrical line must be sized properly to carry the load Each unit must be wired with a separate branch circuit fed directly from the meter panel and properly fused Refer to Figure 4 for typical field wiring and to the appropriate unit wiring diagram for control circuit and power wiring infor mation NOTE HEAT ANTICIPATOR SHOULD BE SET AT 0 35 AMPS FOR ALL MODELS THERMOSTAT UNIT TERMINAL STRIP Minimum wire size of 18 AWG wire should be used for all field installed 24 volt wire R
33. of a sustained main burner flame rollout it shuts off the ignition control and closes the main gas valve NOTE The manual reset Rollout Switch RS must be reset before allowing furnace operation 5 Auxiliary Limit Switch ALS This control is located inside the heat exchanger compartment and is set to open at 160 It is a manual reset switch If ALS trips then the primary limit LS has not functioned correctly Replace the primary limit LS TABLE 11 IGNITION CONTROL BOARD FLASH CODES Flash Code Description Heart Beat Normal Operation 2 Flashes Pressure switch open with inducer on 3 Flashes Pressure switch closed with inducer off 4 Flashes Not Used 5 Flashes Lockout from too many flame losses 6 Flashes High temperature switch open 7 Flashes Rollout switch open 8 Flashes Flame present with gas off 9 Flashes Gas valve stuck OFF or ON 10 Flashes Flame sense circuit failure COOLING When the thermostat calls for COOL the thermostat termi nals G and Y are energized signaling the compressor and outdoor fan to run With a call for Y the circulating fan is energized at cooling speed When the thermostat is satisfied terminals G and Y are de energized de energizing the compressor and outdoor fan After a cool fan off delay timing of 30 seconds the circulating fan is de energized CIRCULATING FAN When the thermostat calls for FAN the thermostat terminal G is energized signaling the cir
34. ol waits for a 15 second pre purge period then begins the ignition trial IGNITION TRIAL PERIOD The control board energizes the pilot gas valve and spark outputs for an 85 second Ignition trial The control de ener gizes the spark when flame is sensed and enters a flame sta bilization period If is not established within the ignition trial period the control de energizes the spark and gas valve and begins an inter purge period before attempting another ignition trial If the call for heat is lost during an ignition trial period the control immediately de energizes spark and gas The control runs the inducer motor through a post purge period before de energizing If the pressure switch is lost during an ignition trial period the control immediately de energizes spark and gas The control begins pressure switch proving before inter purge and re ignition attempt PILOT FLAME STABILIZATION PERIOD The control board de energizes the spark output and waits for a 2 second flame stabilization period before energizing the main gas valve If flame is lost during the flame stabilization period the con trol board counts it as a flame loss and retries ignition or locks out flashing a 5 on the LED HEAT BLOWER ON DELAY The control board waits for 30 seconds and then energizes the indoor blower heat speed Blower on delay time begins at the start of flame proving period in the trial for ignition If the thermostat
35. our service technician or gas supplier TO TURN OFF GAS TO UNIT 1 Set the thermostat to the OFF position Johnson Controls Unitary Products 15 2 Turn off all electric power to the appliance if service is to be performed 3 Remove the control access panel 4 Turn the gas valve switch to the OFF position DO NOT FORCE 5 Replace the control access panel POST START CHECK LIST GAS After the entire control circuit has been energized and the heating section is operating make the following checks 1 Check for gas leaks in the unit piping as well as the sup ply piping 2 Check for correct manifold gas pressures See Checking Gas Input 3 Check the supply gas pressure It must be within the lim its shown on rating nameplate Supply pressure should be checked with all gas appliances in the building at full fire At no time should the standby gas line pressure exceed 10 5 nor the operating pressure drop below 4 5 for natural gas units If gas pressure is outside these limits contact the local gas utility for corrective action MANIFOLD GAS PRESSURE ADJUSTMENT Small adjustments to the gas flow may be made by turning the pressure regulator adjusting screw on the automatic gas valve Refer to Figure 10 Manual Pilot Gas Switch Adjustment Remove Cap Electrical Connection Manifold Pressure Adjustment NPT Remove Cap Outlet Pilot Gas Connection Manifold Pressure Tap F
36. s or shrubs to obstruct the condenser air discharge combustion air inlet or vent outlet DUCT WORK These units are adaptable to downflow use as well as rear supply and return air duct openings To convert to downflow use the following steps 1 Remove the duct covers found in the bottom return and supply air duct openings There are four 4 screws securing each duct cover save these screws to use later 2 Install the duct covers removed step to the rear supply and return air duct openings Secure with the four 4 screws used in step one 3 Seal duct covers with silicone caulk Duct work should be designed and sized according to the methods of the Air Conditioning Contractors of America ACCA as set forth in their Manual D A closed return duct system shall be used This shall not pre clude use of economizers or ventilation air intake Flexible joints may be used in the supply and return duct work to min imize the transmission of noise A CAUTION When fastening duct work to the side duct flanges on the unit insert the screws through the duct flanges only Do not insert the screws through the casing Outdoor ductwork must be insulated and waterproofed NOTE Be sure to note supply and return openings Refer to Figure 9 for information concerning rear and bottom supply and return air duct openings ROOF CURB On applications when a roof curb is used the
37. the heating cycle Johnson Controls Unitary Products TABLE 7 PHYSICAL DATA 340968 XIM A 0108 MODEL DNA 018 024 030 036 042 048 060 EVAPORATOR CENTRIFUGAL BLOWER Dia x W In 10 8 10x8 10x8 mixio xio Px 121 BLOWER FAN MOTOR HP 3 Speed 1 2 1 2 1 2 3 4 3 4 1 1 ROWS DEEP 2 2 2 2 3 3 3 CASO PR FINS PER INCH 14 13 13 15 13 13 13 FACE AREA Sq Ft 2 25 3 5 3 5 3 5 3 5 4 5 4 5 PROPELLER DIA in 22 22 22 22 22 22 22 CONDENSER MOTOR HP 1 4 1 4 1 4 1 4 1 4 1 4 1 4 NOM CFM TOTAL 1 800 2 200 2 400 2 400 2 400 3 000 3 000 ROWS DEEP 1 1 1 1 1 1 1 CONS FINS PER INCH 13 13 16 20 20 20 20 FACE AREA Sq Ft 8 3 8 3 11 7 117 117 14 8 14 8 CHARGE 22 Ibs oz 372 3716 4712 473 479 670 574 FILTER FACE AREA Sq Ft Size Nominal 2 6 20 20 2 6 20x20 2 6 20x20 2 6 20x20 2 6 20x20 3 3 20x12 3 3 20x12 NATURAL GAS BURNER ORIFICE NO Drill Size 43 43 43 43 43 40 40 EON PROPANE BURNER ORIFICE NO Drill Size 55 55 55 55 55 53 53 GAS CONNECTION SIZE 1 2 1 2 1 2 1 2 1 2 1 2 1 2 COMPRESSOR SERED 1 See FILTERS on 5 TABLE 8 ELECTRICAL DATA COMPRESSOR COND minimum MAX HACH UNIT gra EEE eee HOTON BLOWER CIRCUIT BREAKER POWER E a MIN
38. trol begins an ignition sequence with pre purge while the blower off delay continues LOCKOUT While in lockout the control board keeps the pilot gas valve main gas valve and induced draft motor de energized Lockouts due to failed ignition or flame losses may be reset by removing the call for heat W1 for more than 1 second but less than 20 seconds or by removing power from the control for over 0 25 seconds The control will automatically reset lockout after 60 minutes Lockouts due to detected internal control faults will reset after 60 minutes or power interruption HIGH TEMPERATURE LIMIT SWITCH Any time the high temperature limit switch is open the control board will run the indoor blower motor on heat speed the inducer on high speed for 2 stage models de energize the gas valve and flash 6 on the LED When the high tempera ture switch closes the control will restart the ignition sequence beginning with pre purge ROLLOUT SWITCH If the rollout switch opens for more than 0 25 seconds the control board will run the inducer on high speed for 2 stage models for a post purge period immediately de energize the gas valve and flash 7 on the LED The blower output will be energized during an open rollout condition If the rollout switch closes the control shall remain locked out until power removed or W is removed 340968 0108 Rollout switch lockout shall not reset automatically POWER INTERRUPTIONS
39. unit must be positioned on the curb so the front of the unit is tight against the curb FILTERS Single phase units are shipped without a filter and is the responsibility of the installer to secure a filter in the return air ductowrk or install a Filter Frame Kit 1 0110 for the DNA018 thru DNA042 1 0112 for the DNA048 and DNAO60 Filters must always be used and must be kept clean When filters become dirt laden insufficient air will be delivered by the blower decreasing your units efficiency and increasing operating costs and wear and tear on the unit and controls Filters should be checked monthly especially since this unit is used for both heating and cooling CONDENSATE DRAIN A condensate trap is recommended to be installed in the con densate drain The plumbing must conform to local codes Use a sealing compound on male pipe threads Install the condensate drain line NPTF to spill into an open drain Johnson Controls Unitary Products SERVICE ACCESS Access to all serviceable components is provided by the fol lowing removable panels Blower compartment e Gas control electrical service access Refer to Figure 7 for location of these access panels and min imum clearances THERMOSTAT The room thermostat should be located on an inside wall approximately 56 above the floor where it will not be subject to drafts sun exposure or heat from electrical fixtures or appliances Follow manufacturer s i
40. vided upon request FIGURE 7 UNIT DIMENSIONS FRONT TABLE 9 UNIT DIMENSIONS FRONT TABLE 10 UNIT MINIMUM CLEARANCES 2 UNIT SIZE __ CLEARANCES FRONT 018 thru 042 SACK u 048 and 060 LEFT SIDE Filter Access 24 RIGHT SIDE 12 BELOW UNIT 0 ABOVE UNIT 4 36 For Condenser Air Discharge A 1 clearance must be provided between any combustible material and the supply 7 air ductwork The products of combustion must not be allowed to accumulate within a confined space and recirculate Units may be installed on combustible floors made from wood or class A B or C roof covering material Units must be installed outdoors Overhanging structures or shrubs should not obstruct condenser air discharge outlet Johnson Controls Unitary Products 11 340968 XIM A 0108 HIGH VOLTAGE CONN 1 3 32 DIA KNOCKOUT K FRONT GAS SUPPLY 1 5 8 DIA KNOCKOUT 1 2 NPTI CONNECTION LOW VOLTAGE CONN 1 8 DIA KNOCKOUT 4 5 8 FIGURE 8 UNIT DIMENSIONS FRONT amp BOTTOM 14 1 2 SIDE SUPPLY AIR OPENING 28 3 8 CONDENSER COIL 14 112 BACK SIDE RETURN AIR OPENING BOTTOM RETURN AIR OPENING FIGURE 9 UNIT DIMENSIONS BACK amp BOTTOM 12 Johnson Controls Unitary Products 340968 XIM A 0108 SEQUENCE OF OPERATION The unit is controlled by a conventional heating cooling ther mostat common to this class of equipment HEATING The contro
41. zed through the call for heat the control considers it to be connected to a single stage thermostat and implements a 10 minute Auto staging feature The 2nd stage thermostat call is ignored until 10 minutes into steady heat 9 minutes after high heat warm up ended Johnson Controls Unitary Products 13 The control recognizes a call for 2nd stage heat when W2 is energized connected to R The control energizes the high gas output and induced draft motor on high speed If the call for 2nd stage heat goes away and the 1st stage call remains the control de energizes the high gas valve drops inducer speed to low and returns to low heat operation Response to loss of W1 low pressure switch and flame are identical to low heat operation POST PURGE The control board runs the induced draft motor for a 30 sec ond post purge period and then de energizes the inducer If a call for heat occurs during post purge the control finishes the post purge drops inducer out to re prove open pressure switch before continuing with the heat cycle HEAT BLOWER OFF DELAY The control board de energizes the indoor blower motor after a delay time as selected by movable shunt 60 90 120 or 180 seconds Blower timing begins when the thermostat is satisfied or heat cycle was interrupted The control returns to standby when the blower off delay is complete If the thermostat call for heat returns before the blower off delay is complete the con
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