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Page 61

31-5000724 Rev. 0

Field Wiring Applications with Conventional Thermostat

Thermostat

DIP Switch Settings and On-Board Links

Wiring Connections

DIP Switch 1

W915

(Y1 to Y2)

Two-Stage Cooling

W914

(DS to R)

Dehumidification

W951

(O to R)

Heat Pumps

1 Heat / 1 Cool

NOTE:

Use DIP

switch 3 to set

sceond-stage heat

ON delay.

OFF - 7 minutes

ON - 12 minutes

Intact

T'STAT

CONTROL

TERM. STRIP

OUTDOOR

UNIT

1 Heat / 2 Cool

NOTE:

Use DIP

switch 3 to set

sceond-stage heat

ON delay.

OFF - 7 minutes

ON - 12 minutes

Cut

Intact

T'STAT

CONTROL

TERM. STRIP

OUTDOOR

UNIT

1 Heat / 2 Cool

with t’stat with

dehumidification

mode

NOTE:

Use DIP

switch 3 to set

sceond-stage heat

ON delay.

OFF - 7 minutes

ON - 12 minutes

Cut

Intact

T'STAT

CONTROL

TERM. STRIP

OUTDOOR

UNIT

* “R” required on some units.
** Connect W1 to W1 ONLY if using defrost tempering kit

Table 30. Field Wiring

Содержание GE NF97DM

Страница 1: ...31 5000724 Rev 0 11 22 GEA NF97DM 97 Downflow Modulating Variable Speed Gas Furnace Service Manual READ CAREFULLY KEEP THESE INSTRUCTIONS ...

Страница 2: ...his equipment and wear gloves and protective clothing CAUTION Improper installation adjustment alteration service or maintenance can cause property damage personal injury or loss of life Installation and service must be performed by a licensed professional HVAC installer or equivalent service agency or the gas supplier WARNING NF97DM series units are high efficiency upflow horizontal right and lef...

Страница 3: ...20 60 1 15 10 1 40 165 NF97D110M5C 110 000 107 000 97 0 5 Tons 1 2 120 60 1 20 12 8 40 174 Note For vent length and clearances to combustibles please reference installation instructions At full capacity Technical Specifications NF97DM MODEL NUMBER GUIDE MAJOR MINOR REVISION CABINET WIDTH B 17 5 C 21 0 NOMINAL CFM 3 1200 CFM 4 1600 CFM 5 2000 CFM DESIGN VARIANT M VARIABLE SPEED MODULATING BRAND N G...

Страница 4: ...30 894 15 444 649 853 10 520 619 714 822 NF97D090M4C 1 2 HP 10 x 9 60 90 Max Input 15 756 1033 1309 2nd Stage 10 924 1083 1218 1386 7 5 713 971 1230 Default 835 1000 1136 1259 Default 669 910 1150 10 751 890 1028 1145 35 65 Min Input 1st Stage 10 610 771 902 1035 7 5 599 845 1091 Default 549 690 808 923 15 530 781 1032 10 466 623 721 812 NF97D110M5C 1 HP 11 x 11 50 80 Max Input 15 906 1475 2045 2n...

Страница 5: ...1 21 0 C Width Flush Mount Termination 90 Furnaces only US Only 51W11 2 3 0 Vent Concentric Vent Kit 90 Furnaces only US Only 71M80 1 1 2 Vent Version United States 69M29 2 Vent Version United States 60L46 3 Vent Version United States Concentric Vent Kit Canada 44W92 1 1 2 2 Vent 44W93 3 0 Vent For vent length and clearances to combustibles please reference installation instructions ...

Страница 6: ...v 0 Parts Arrangement Figure 1 Burner Access Panel Blower Access Panel Combustion Air Inducer Control Box Blower Assembly Burner Box Assembly Blower Deck Heat Exchanger Assembly Gas Valve and Manifold Primary Limit Cabinet ...

Страница 7: ...set by pressing the button on the face See Figure 3 PRESS TO RESET Figure 3 Circuit Breaker CB8 Shock hazard Disconnect power before servicing Integrated control is not field repairable If control is inoperable simply replace entire control Can cause injury or death Unsafe operation will result if repair is attempted WARNING Integrated Control A92 Units are equipped with a variable capacity integr...

Страница 8: ...only operational with a two stage thermostat The thermostat selection is made using dip switches one and or two Figure 4 and must be positioned for the particular application Variable Capacity Using a two stage thermostat the system will operate in a variable capacity sequence mode In this mode the control will vary the firing rate anywhere between 35 and 100 of full capacity The indoor blower wil...

Страница 9: ...XC COMMON RS BUS INDOOR E44 not used R 24VAC I DATA HIGH CONNECTION I DATA LOW CONNECTION C 24VAXC COMMON 1 4 QUICK CONNECT TERMINALS HUM 120 VAC OUTPUT TO HUMIDIFIER XMFR 120 VAC OUTPUT TO TRANSFORMER LI 120 VAC INPUT TO CONTROL CIRC 120 VAC OUTPUT TO CIRCULATING BLOWER EAC 120 VAC OUTPUT TO ELECTRICAL AIR CLEANER NEUTRALS 120 VAC NEUTRAL THERMOSTAT CONNECTIONS E7 DS DEHUMIDIFICATION SIGNAL W2 HE...

Страница 10: ...Page 10 31 5000724 Rev 0 Figure 5 Integrated Control Configuration Guide ...

Страница 11: ... off timings that will result from different switch settings Blower Off Delay Seconds Switch 4 Switch 5 60 Off On 90 Factory Off Off 120 On Off 180 On On Table 4 Blower Off Delay Switch Settings Switches 6 and 7 Continuous Indoor Fan Operation Blower Speed The unit is shipped from the factory with the DIP switches positioned for medium low 38 speed during continuous indoor blower operation Continu...

Страница 12: ...t motor ramps down to stop OFF OFF 82 CFM 100 CFM COMPRESSOR DEMAND 7 1 2 MIN Ramping Option C Motor runs at 100 until demand is satisfied Once demand is met motor runs at 100 for 45 seconds then ramps down to stop OFF OFF 100 CFM 100 CFM 45 SEC COMPRESSOR DEMAND Ramping Option D Motor runs at 100 until demand is satisfied Once demand is met motor ramps down to stop OFF OFF 100 CFM COMPRESSOR DEMA...

Страница 13: ...e 4 On board link W915 is a clippable connection between terminals Y1 and Y2 on the integrated control W915 must be cut if two stage cooling will be used If the link is not cut the outdoor unit will operate in second stage cooling only Diagnostic LED Figure 4 The seven segment diagnostic LED displays operating status target airflow error codes and other information LED codes are listed on Page 16 ...

Страница 14: ...de after 45 minutes of operation These options are displayed on the menu when the button is pressed during normal operation Display Action when button is released No change idle Remain in idle mode Solid E Enter diagnostic mode Solid Enter field test mode NOTE No change implies the display will continue to show whatever is currently being displayed for normal operation Table 10 Idle Menu Options T...

Страница 15: ...ing function must be repeated Verify that the selected unit size code is correct and stored in non volatile memory by cycling the 24 volt power to the furnace control At 24 volt power up of the furnace control the 7 segment LED will display a unit size code If three horizontal bars display the board does not recognize the unit size code The programming function must be repeated FINISHED If alarm i...

Страница 16: ...oltage and frequency problems System resumes normal operation 5 seconds after fault recovered E115 Low 24V Control will restart if the error recovers 24 Volt Power high Range is 18 to 30 Volts Check and correct voltage Check for additional power robbing equipment connected to system May require installation of larger VA transformer to be installed in furnace air handler Clears after fault recovere...

Страница 17: ...w c Inspect vent and combustion air inducer for correct operation and restriction Resumes normal operation after fault is cleared E224 Low pressure switch failed closed Refer to troubleshooting Check pressure inches W C of low pressure switch closing on heat call Measure operating pressure inches w c Inspect vent and combustion air inducer for correct operation and restriction Resumes normal opera...

Страница 18: ...um number of recycles Last recycle due to the pressure switch opening Check operation of low pressure to see if it is stuck closed on heat call Check pressure inches w c of high pressure switch closing on heat call Measure operating pressure Inspect vent and combustion air inducer for correct operation and restriction Clears when heat call finishes successfully E273 Soft lockout Exceeded maximum n...

Страница 19: ...d airflow Reduce firing rate every 60 seconds to match available CFM Check filter and duct system To clear replace filter if needed or repair add duct 2 stage controls will reduce firing rate to 1 stage Clears when heat call finished successfully E312 Restricted airflow in cooling or continuous fan mode is lower than CFM setting Warning Only Restricted airflow Indoor blower is running at a reduced...

Страница 20: ...perates independent of a Y1 thermostat demand Normal Operation 1 On On On Acceptable 24 VAC High 100 Dehumidification mode begins when humidity is greater than set point Maximum overcool from cooling setpoint is 2 F Dehumidification Call 2 On On On Demand 0 VAC High 70 Dehumidification Call ONLY 1 On On On Demand 0 VAC High 70 Thermostat will keep outdoor unit energized after cooling temperature s...

Страница 21: ...emperature setpoint has been reached in order to maintain room humidity setpoint Maximum overcool from cooling setpoint is 2 F ROOM THERMOSTAT CALLS FOR FIRST AND SECOND STAGE COOLING BASIC MODE only active on a Y1 thermostat demand Normal Operation 1 On On On On Acceptable 24 VAC High 100 Thermostat energizes 2nd Stage and de energizes D on a call for de humidification Dehumidification Call 2 On ...

Страница 22: ...onents The controller uses sensing devices to sense what position the rotor is in at any given time By sensing the position of the rotor and then switching the motor windings on and off in sequence the rotor shaft turns the blower All NF97DM blower motors use single phase power An external run capacitor is not used The motor uses permanently lubricated ball type bearings Internal Operation The mot...

Страница 23: ...ct power from unit and wait at least five minutes to allow capacitors to discharge before attempting to service motor Failure to wait may cause personal injury or death DANGER Power Choke L13 A choke coil is used on units equipped with 1 hp motors The choke is located on the blower housing and is used to suppress transient current spikes Remove Blower from Unit 1 Remove unit access panels control ...

Страница 24: ...8 5 Pin J48 5 Pin Line Voltage Connector J49 4 Pin Control Connector J48 5 Pin J49 4 Pin MOTOR with INTEGRATED CONTROLLER SHAFT P49 4 Pin P48 5 Pin P48 5 Pin P49 4 Pin J48 Connector installed on motor P49 4 Pin 120v 0 240v 5 4 3 2 1 J48 Connector 24v Transformer J49 Connector Figure 10 Blower B3 Harness Connectors ...

Страница 25: ...esistance should be the same If the measured resistance is greater than 20 ohms replace the motor and control module Figure 13 Test B Heating Components Ignitor The ignitor is made of durable silicon nitride Ignitor longevity is enhanced by controlling voltage to the ignitor The integrated control provides 120 volts to the ignitor for a consistent ignition Due to this feature of the control voltag...

Страница 26: ...perate the unit with the burner box front panel in place Each burner uses an orifice that is precisely matched to the burner input Burners can be removed as a one piece assembly for service If burner assembly has been removed it is critical to align center of each burner to the center of the clamshell when re installing See more detail in Maintenance Heat Exchanger Figure 15 NF97DM units use an al...

Страница 27: ...f explosion There are circumstances in which odorant used with LP propane gas can lose its scent In case of a leak LP propane gas will settle close to the floor and may be difficult to smell An LP propane leak detector should be installed in all LP applications DANGER The burner box is sealed and operates under a negative pressure A pressure hose is connected from the burner box to the gas valve T...

Страница 28: ...tch open RPM margin value 3 If low pressure switch is open set flag for calibration on next call for heat Turn inducer off until next call for heat 4 If low pressure switch is closed move inducer speed to RPM1 Allow 5 seconds for stabilization Finally the switch interrupts the combustion process if the condensate drainage system becomes blocked to the point the condensate level builds up in the co...

Страница 29: ... measures the pressure differential across the CAI orifice difference in the channel and cold end header box If replacement is necessary the gaskets used to seal the box to the vestibule panel and the CAI to the box must also be replaced Unit Set Point High Fire Set Point Low Fire All 1 00 0 05 0 25 0 05 Units over 7500 ft will require a conversion kit See Table 28 Table 17 Pressure Switch 0 to 75...

Страница 30: ...mp Tubing Exhaust Elbow Exhaust Coupling Blower Deck Seal Pipe Clamp Exhaust Pipe Intake Air Pipe Cold End Header Box Combustion Air Inducer CAI Exhaust Connector with Alignment Tabs Drain Cap Figure 19 Combustion Air Inducer Cold End Header Box Vent Pipe Assembly ...

Страница 31: ...ecommended during cooler weather Metal or plastic strapping may be used for vent pipe hangers Uniformly apply a liberal coat of PVC primer for PVC or use a clean dry cloth for ABS to clean inside socket surface of fitting and male end of pipe to depth of fitting socket Canadian Applications Only Pipe fittings primer and solvent cement used to vent exhaust this appliance must be certified to ULC S6...

Страница 32: ...nsert end of pipe into socket until it bottoms out Turn PVC pipe 1 4 turn during assembly but not after pipe is fully inserted to distribute cement evenly DO NOT turn ABS or cellular core pipe NOTE Assembly should be completed within 20 seconds after last application of cement Hammer blows should not be used when inserting pipe 8 After assembly wipe excess cement from pipe at end of fitting socket...

Страница 33: ...Piping Figure 22 and Figure 23 Route piping to outside of structure Continue with installation following instructions given in piping termination section Do not discharge exhaust into an existing stack or stack that also serves another gas appliance If vertical discharge through an existing unused stack is required insert PVC pipe inside the stack until the end is even with the top or outlet end o...

Страница 34: ...m Not Furnished 2 2 Plate Furnished 90 Elbow Not Furnished Figure 23 Typical Exhaust Pipe Connections with Right Side Vent Option TRANSITION 2 3 TOP VIEW 2 When transitioning up in pipe size use the shortest length of 2 PVC pipe possible NOTE Intake pipe and exhaust pipe must be the same diameter 2 Plate Furnished 2 90 Elbow Not Furnished Figure 24 Typical Air Intake Pipe Connections with Right Si...

Страница 35: ... the termination Refer to Table 22 In some applications which permit the use of several different sizes of vent pipe a combination vent pipe may be used Contact GE Appliances Application Department for assistance in sizing vent pipe in these applications NOTE It is acceptable to use any pipe size which fits within the guidelines allowed in table 24 NOTE The exhaust collar on all models is sized to...

Страница 36: ...29 100 53 n a 122 103 78 9 46 24 95 48 117 98 73 10 41 19 90 43 112 93 68 Standard Termination at Elevation 4 501 10 000 ft Number of 90 Elbows Used 1 1 2 Pipe 2 Pipe 2 1 2 Pipe 3 Pipe Model Model Model Model 70 90 110 70 90 110 70 90 110 70 90 110 1 n a n a n a 61 39 n a 110 63 n a 132 113 88 2 56 34 105 58 127 108 83 3 51 29 100 53 122 103 78 4 46 24 95 48 117 98 73 5 41 19 90 43 112 93 68 6 36 ...

Страница 37: ...9 8 43 27 90 49 106 99 74 9 38 22 85 44 101 94 69 10 33 17 80 39 96 89 64 Concentric Termination Elevation 4 501 10 000 ft Number of 90 Elbows Used 1 1 2 Pipe 2 Pipe 2 1 2 Pipe 3 Pipe Model Model Model Model 70 90 110 70 90 110 70 90 110 70 90 110 1 n a n a n a 53 37 n a 100 59 n a 116 109 84 2 48 32 95 54 111 104 79 3 43 27 90 49 106 99 74 4 38 22 85 44 101 94 69 5 33 17 80 39 96 89 64 6 28 12 75...

Страница 38: ...ed that the exhaust outlet not be located within 6 feet 1 8m of an outdoor AC unit because the condensate can damage the painted coating NOTE See Table 21 for maximum allowed exhaust pipe length without insulation in unconditioned space during winter design temperatures below 32 F 0 C If required exhaust pipe should be insulated with 1 2 13mm Armaflex or equivalent In extreme cold climate areas 3 ...

Страница 39: ...N A N A N A N A N A N A 2 in N A N A N A N A N A N A 2 1 2 in N A N A N A N A N A N A 3 in N A N A N A N A N A N A 1 Refer to 99 Minimum Design Temperature table provided in the current edition of the ASHRAE Fundamentals Handbook 2 Poly Propylene vent pipe PP by Duravent and Centrotherm 3 Vent length in table is equivalent length Each elbow is equivalent to 5ft of straight pipe and should be inclu...

Страница 40: ...es 152mm for appliances 10 000 pliances 10 000 Btuh 3kw and 50 000 pliances 50 000 Btuh 15kw 6 inches 152mm for appliances 10 000 Btuh 3kw 12 inches 305mm for appliances 10 000 Btuh 3kw and 100 000 Btuh 30kw 36 inches 9m for appliances 100 000 Btuh 30kw 3 feet 9m above if within 10 feet 3m horizontally 6 feet 1 8m 7 feet 2 1m 12 inches 305mm 1 In accordance with the current ANSI Z223 1 NFPA 54 Nat...

Страница 41: ...t Pipe Furnace Inlet Air Minimum 12 in 305MM above grade or snow accumulation Figure 29 Exiting Exhaust and Intake Vent no common pressure zone 2 Intake and exhaust pipes should be placed as close together as possible at termination end refer to illustrations Maximum separation is 3 76MM on roof terminations and 6 152MM on side wall terminations NOTE When venting in different pressure zones the ma...

Страница 42: ...elerator provided on 71M80 44W92 kits for 045 and 070 models 12 305mm INTAKE AIR EXHAUST VENT Figure 32 Direct Vent Concentric Rooftop Termination 71M80 69M29 or 60L46 US 44W92 or 44W93 Canada Figure 33 Direct Vent Application Using Existing Chimney STRAIGHT CUT OR ANGLE CUT IN DIRECTION OF ROOF SLOPE EXHAUST VENT 1 2 13mm WEATHERPROOF INSULATION SHOULDER OF FITTINGS PROVIDE SUPPORT OF PIPE ON TOP...

Страница 43: ...above grade or average snow accumulation B Horizontal separation between intake and exhaust C Minimum from end of exhaust to inlet of intake D Exhaust pipe length E Wall support distance from top of each pipe intake exhaust 12 305 mm Min 12 305 mm Min 6 152 mm Min 24 610 mm Max 9 227 mm Min 12 305 mm Min 16 405 mm Max 6 152 mm Max 6 152 mm Min 24 610 mm Max 9 227 mm Min 12 305 mm Min 20 508 mm Max...

Страница 44: ... for all provinces of Canada GEA approves the following termination for use in all provinces of Canada C 12 D B A 2 51MM Vent Pipe 3 76MM Vent Pipe 12 305 mm Min 12 305 mm Min 6 152 mm Min 24 610 mm Max 6 152 mm Max 6 152 mm Min 24 610 mm Max 6 152 mm Max A Clearance above grade or average snow accumulation B Horizontal separation between intake and exhaust C Exhaust pipe length D Wall support dis...

Страница 45: ...ting into cold end header box Use Teflon tape or appropriate pipe dope Figure 43 3 Install the cap over the clean out opening at the base of the trap Secure with clamp See Figure 43 and Figure 44 4 Install drain trap using appropriate PVC fittings glue all joints Glue the provided drain trap as shown in Figure 43 or Figure 44 Route the condensate line to an open drain When combining the furnace an...

Страница 46: ... condensate and blockage of drain line If this is not possible a heat cable kit may be used on the condensate trap and line Figure 40 Unit with Cooling Coil Using Separate Drain Drain Field Provided Vent 1 min 2 max above condensate drain Condensate Drain Connection Evaporator Drain Line vent required Figure 41 Evaporator Coil Using a Common Drain Field Provided Vent 1 min 2 max above condensate d...

Страница 47: ...ch PVC Pipe Not Furnished Drain Assembly for 3 4 inch Drain Pipe Condensate Drain Connection In Unit Condensate Drain Connection In Unit Vent To Drain Condensate Drain Connection In Unit Optional Condensate Drain Connection OptionalDrainPipingFromTrap DrainTrapAssembly Furnished DrainTrap Assembly with 1 2 inch Piping DrainTrap Assembly with 3 4 inch Piping 1 2 inch 3 4 inch 1 25 mm Min 2 50 mm Ma...

Страница 48: ...2 inch PVC To Drain 90 Elbow 1 2 inch PVC Not Furnished 1 2 inch PVC Pipe Not Furnished Drain Assembly for 3 4 inch Drain Pipe 90 Street Elbow 1 2 inch PVC Not Furnished Condensate Drain Connection In Unit Adapter 1 2 inch slip X 1 2 inch mpt Not Furnished Condensate Drain Connection In Unit Vent To Drain Condensate Drain Connection In Unit Drain Trap Assembly with 3 4 inch Piping Vent To Drain Fu...

Страница 49: ...replace the valve Do not try to repair it Force or attempted repair may result in a fire or explosion Placing the Furnace into Operation NF97DM units are equipped with an ignition system Do NOT attempt to manually light burners on this furnace Each time the thermostat calls for heat the burners will automatically light The ignitor does not get hot when there is no call for heat on units with an ig...

Страница 50: ...unit ignition system in lockout If the unit locks out again inspect the unit for blockages 10 Is blower harness connected to integrated control Furnace will not operate unless harness is connected Safety or Emergency Shutdown Turn off unit power Close manual and main gas valves Extended Period Shutdown Turn off thermostat or set to UNOCCUPIED mode Close all gas valves both internal and external to...

Страница 51: ...hould not lift from burner Natural gas should burn blue 5 After allowing unit to run for 5 minutes record manifold pressure and compare to value given in Table 28 6 Repeat steps 3 4 and 5 on high fire 7 Shut unit off and remove manometer as soon as an accurate reading has been obtained Take care to remove barbed fitting and replace threaded plug 8 Start unit and perform leak check Seal leaks if fo...

Страница 52: ...eld Installed Gas Valve Figure 47 Manifold Pressure Measurement Negative Port Positive Port Gas Valve Measuring Device Field Installed Black Tubing Red and Black Tubing or Red Tubing Figure 48 Operating Signal Delta P Measurement ...

Страница 53: ...a pressure switch change perTable 28 Table 28 also lists gas conversion kit requirements at all altitudes The combustion air pressure switch is factory set and requires no adjustment Model Input Size LP Propane Kit High Altitude Pressure Switch Kit 0 10 000 0 3048 m 0 7 500 0 2286 m 7 501 10 000 2287 3048m 70 68W77 Not required 14T67 90 110 Table 27 Conversion Kit Requirements Firing Rate Manifold...

Страница 54: ...second stage heat If using a single stage thermostat furnace must fire at least 10 minutes before switching to second stage heat 3 After plenum thermometers have reached their highest and steadiest readings subtract the two readings The difference should be in the range listed on the unit rating plate If the temperature is too low decrease blower speed If temperature is too high first check the fi...

Страница 55: ...y filters have a higher static pressure drop than standard efficiency glass foam filters If the pressure drop is too great system capacity and performance may be reduced The pressure drop may also cause the limit to trip more frequently during the winter and the indoor coil to freeze in the summer resulting in an increase in the number of service calls Before using any filter with this system chec...

Страница 56: ...nect all combustion air pressure tubing from cold end header collector box 12 Mark and remove wires from pressure switches Remove pressure switches Keep tubing attached to pressure switches 13 Disconnect the 4 pin plug from the combustion air inducer Remove two screws which secure combustion air inducer to collector box Remove combustion air inducer assembly Remove ground wire from vest panel 14 R...

Страница 57: ...tment access panel Cleaning the Burner Assembly 1 Turn off electrical and gas power supplies to furnace Remove upper and lower furnace access panels 2 Disconnect the 2 pin plug from the gas valve 3 Remove the burner box cover 4 Disconnect the gas supply line from the gas valve Remove gas valve manifold assembly 5 Mark and disconnect sensor wire from the sensor Disconnect 2 pin plug from the ignito...

Страница 58: ...MINALS NOT USED 24V THERMOSTAT CONNECTIONS DH AND L TERMINALS NOT USED 070 3B 090 4C 110 5C 070 3B 090 4C 110 5C J J2 J P79 CUT W914 JUMPER LABELED DEHUM OR HARMONY FROM DS TO R AT A92 CONTROL BOARD WHEN USED WITH THERMOSTAT WITH DEHUM OPTION Figure 51 NF97DM Typical Field Wiring Diagram ...

Страница 59: ...till present the furnace will continue to operate at the present firing rate until the heat cycle ends 7 When the demand for first and second stage heat is satisfied the gas valve is de energized and the field selected indoor blower off delay begins The combustion air inducer begins a 20 second post purge period 8 When the combustion air post purge period is complete the inducer is de energized Th...

Страница 60: ...cond ON delay When the delay ends the indoor blower motor is energized at a speed that matches the firing rate After the 10 second ignition stabilization delay expires the inducer speed is adjusted to the appropriate target rate The inducer will remain at the 70 percent speed as long as the thermostat has a first stage heating demand 5 If second stage heat is required the thermostat second stage h...

Страница 61: ...s ON 12 minutes ON Intact Intact Intact T STAT CONTROL TERM STRIP OUTDOOR UNIT 1 Heat 2 Cool NOTE Use DIP switch 3 to set sceond stage heat ON delay OFF 7 minutes ON 12 minutes ON Cut Intact Intact T STAT CONTROL TERM STRIP OUTDOOR UNIT 1 Heat 2 Cool with t stat with dehumidification mode NOTE Use DIP switch 3 to set sceond stage heat ON delay OFF 7 minutes ON 12 minutes ON Cut Cut Intact T STAT C...

Страница 62: ...o R Heat Pumps 2 Heat 2 Cool OFF Cut Intact Intact T STAT CONTROL TERM STRIP OUTDOOR UNIT 2 Heat 2 Cool with t stat with dehumidification mode OFF Cut Cut Intact T STAT CONTROL TERM STRIP OUTDOOR UNIT 2 Heat 1 Cool OFF Intact Intact Intact T STAT CONTROL TERM STRIP OUTDOOR UNIT R required on some units Connect W1 to W1 ONLY if using defrost tempering kit Table 30 Field Wiring ...

Страница 63: ...abilities Capable of 2 stage gas heat control OFF Intact Intact Cut T STAT CONTROL TERM STRIP HEAT PUMP 67M41 Y H L Y2 D B L Y2 T T outdoor sensor Dual Fuel Two Stage Heat Pump thermostat w dual fuel capabilities Capable of 2 stage gas heat control OFF Cut Intact Cut CONTROL TERM STRIP HEAT PUMP out blue 67M41 H L Y2 D B L Y2 T T outdoor sensor T STAT R required on some units Connect W1 to W1 ONLY...

Страница 64: ... 20Seconds Soft Lockout Error Code Flashes YES NO NO YES Call For Heat Ends NO YES YES NO C A L L F O R 1 S T S T A G E H E A T 3A 2 1 1 OR Call For Heat NO 4 Calibrations Attempted Calibration Successful Wait 5 minutes NO NO Soft Lockout Error Code Flashes YES YES YES 2 1 1 2 Set Target Firing Rate Based on Thermostat Signals Present SOF T LOCKOU T IS RESE T AUTOMATICALLY AFTER ONE HOUR WITH A CA...

Страница 65: ... 10 Seconds NO Error Code Flashes NO YES Wait 5 Minutes 3A 2 1 2 1 System will always light at 70 even if 2nd stage call for heat is in place If the high pressure switch does not close within 5 attempts the system will operate at low fire for the remainder of the call for heat at request Combustion Air Inducer ON 100 Rate Speed Increase Combustion Air Inducer Speed if Not at 100 Rate Speed Adjust ...

Страница 66: ...OR Combustion Air Inducer switched to 70 rate speed Adjust Indoor Blower to appropiate speed Combustion Air Inducer OFF after 20 Second Post Purge Indoor Blower OFF after OFF Delay RUN MODE 2 STAGE THEREMOSTAT 1ST OR 2ND STAGE CALL FOR HEAT ALL INPUTS MONITORED LIMIT PRESSURE CALL FOR HEAT COOL FLAME LEVEL RUN MODE SINGLE STAGE THERMOSTAT ALL INPUTS MONITORED LIMIT PRESSURE CALL FOR HEAT COOL FLAM...

Страница 67: ...ockout Error Code Flashes YES NO NO YES Call For Heat Ends NO YES YES NO C A L L F O R H E A T 3B 1 4 Move to Mid Firing Rate and High Firing Rate after 2nd and 3rd Stage Delays based on DI P Switch selections Pressure Switch Calibration Call For Heat NO 4 Calibrations Attempted Calibration Successful Wait 5 minutes NO NO Soft Lockout Error Code Flashes YES YES YES SOFT LOCKOUT IS RESE T AUTOMATIC...

Страница 68: ...oling mode High Cooling mode Per Ramping Profile NO NO YES NO 5 1 2 1 2 2 2 1 Indoor Blower On After 2 second delay Energize Indoor Blower Per Ramping Profile Energize Indoor Blower Maintain Indoor Blower Maintain Indoor Blower at De EnergizeIndoor Blower 2nd stage cooling operation requires a 2 stage thermostat a 2 stage cooling system and jumpers W915 must be be cut The control will not respond ...

Страница 69: ... 1 1 Call for Continuous Blower Indoor Blower On Maintain Indoor Blower at set speed Maintain Indoor Blower at set speed OR Maintain Indoor Blower at set speed Indoor Blower Per Go to Call for Heat Single Stage Thermostat Indoor blower low cooling mode and high cooling mode have specific ON OFF and speed ramping profiles The specific profile is selected using the dip switches on the control Figure...

Страница 70: ...Printed in the U S A All specifications and illustrations subject to change without notice and without incurring obligations ...

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