COMFORT-AIRE Century GDD95C Series Скачать руководство пользователя страница 11

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508115-01

Issue 2043

Page

of 5

Primary Limit Control (Figure 6)

Primary limit (S10) used on

GDD95C

units is located

in the heating vestibule panel. When excess heat is

sensed in the heat exchanger, the limit will open. Once

the limit opens, the furnace control energizes the

supply air blower and de-energizes the gas valve.

The limit automatically resets when unit temperature

returns to normal. The switch is factory set and cannot be

adjusted. For limit replacement remove wires from limit

terminals, remove mounting screws, rotate limit switch

90 degrees and slowly remove from the vestibule

panel. Install replacement limit with same care. See

flash code 7 in Table 4 or Table 5 for troubleshooting if

limit switch opens during operation.

Install limit face down

Figure 6. Primary Limit Location and Heat Exchanger

Gas Valve (Figure 7)

The

GDD95C

uses an internally redundant valve to

assure safety shut-off. If the gas valve must be

replaced, the same type valve must be used.

24VAC terminals and gas control switch are located on top

of the valve. All terminals on the gas valve are connected to

wires from the ignition control. 24V applied to the terminals

opens the valve.

Inlet and outlet pressure taps are located on the valve. A

manifold adjustment screw is also located on the valve. An

LP/Propane changeover kit is available.

Figure 7. Gas Valve

GAS VALVE SHOWN IN ON POSITION

MANIFOLD

PRESSURE

OUTLET

PORT

INLET

PRESSURE

PORT

MANIFOLD PRESSURE

ADJUSTMENT SCREW

(under barbed fitting)

To Measure Flame Signal - Integrated Control:

Use a digital readout meter capable of reading DC

microamps. See Figure 8 for flame signal check.

Set the meter to the DC amps scale.

Turn off supply voltage to control.

Remove sensor wire from integrated control.

Connect (-) lead to flame sensor wire.

Connect (+) lead to Terminal FS on integrated control.

Turn supply voltage on and close thermostat contacts

to cycle system.

When main burners are in operation for two minutes,

take reading.

Содержание Century GDD95C Series

Страница 1: ...This is a safety alert symbol and should never be ignored When you see this symbol on labels or in manuals be alert to the potential for personal injury or death Electric shock hazard Can cause injury or death Before attempting to perform any service or maintenance turn the electrical power to unit OFF at disconnect switch es Unit may have multiple power supplies WARNING As with any mechanical equ...

Страница 2: ...5 C G DD 95 C 0 0 4 45 5 B B 3 M 3 M STAGES MOTOR A SINGLE STAGE PSC C SINGLE STAGE CONSTANT TORQUE T TWO STAGE VARIABLE SPEED ECM PHYSICAL AND ELECTRICAL DATA Model Input Btuh Output Btuh AFUE ICS Nom Cooling Capacity Gas Inlet in Volts Hz Phase Max Time Delay Breaker or Fuse Nominal F L A Trans V A Approx Shipping Weight lbs DOWNFLOW GDD95C045B3M 44 000 42 000 95 0 1 1 2 3 1 2 120 60 1 15 6 8 40...

Страница 3: ...Med High 1470 1430 1390 1335 1300 1260 1220 Med 1265 1235 1185 1155 1100 1050 1015 Med Low 1165 1120 1070 1015 970 915 865 Low 895 835 775 690 625 570 520 GDD95C090C4M 3 4 10 x 10 40 70 High 1685 1630 1620 1570 1540 N A N A Med High 1455 1415 1370 1335 1295 1260 1210 Med 1310 1285 1245 1185 1145 1110 1060 Med Low 1220 1165 1125 1080 1045 990 940 Low 1080 1035 985 925 875 825 760 GDD95C110C5M 1 11 ...

Страница 4: ...rvice Kits 86W57 Single Stage Horizontal Suspension Kit 51W10 80 90 Kit Flush Mount Termination 90 Furnaces only US Only 51W11 2 3 Vent Version Concentric Vent Kit 90 Furnaces only US Only 71M80 1 1 2 Vent Version 69M29 2 Vent Version 60L46 3 Vent Version Concentric Vent Kit 90 Furnaces only Canada 44W92 1 1 2 and 2 Vent Version 44W93 3 Vent Version 2 Stage Compressor Relay Kit 85W66 Blower Relay ...

Страница 5: ...ntrol transformer and door switch BAG ASSEMBLY BLOWER MOTOR hidden COMBUSTION AIR INDUCER BURNER BOX ASSEMBLY includes flame sensor rollout switches and ignitor GAS VALVE BLOWER DECK HEAT EXCHANGER COLD END HEADER BOX PRIMARY LIMIT BLOWER ACCESS PANEL HEATING ACCESS PANEL COMPARTMENT COMPARTMENT ...

Страница 6: ... the transformer T1 The breaker is rated at 3A at 32V If the current exceeds this limit the breaker will trip and all unit operation will shutdown The breaker can be manually reset by pressing the button on the face Integrated Ignition Control A92 Shock hazard Disconnect power before servicing Control is not field repairable If control is inoperable simply replace entire control Can cause injury o...

Страница 7: ...g heat demand 4 Low Flame Signal check flame sensor 5 Watchguard burner failed to light exceeded maximum number of retries or recycles 6 Not Used 7 Primary or Secondary Limit Open or Watchguard Mode Limit Switch Open longer than 3 minutes 8 Rollout Switch Open 9 Pressure Switch failed to close or opened during heat demand 10 Watchguard Pressure Switch opened 5 times during one heat demand 11 Press...

Страница 8: ... Open 9 Pressure Switch failed to close or opened during heat demand 10 Watchguard Pressure Switch opened 5 times during one heat demand 11 Pressure Switch stuck closed prior to activation of combustion air inducer 12 Flame Sensed without gas valve energized 13 Low Line Voltage 1 A Heartbeat is indicated by a Slow Flash 1 sec on 1 sec off repeating 2 Error codes are indicated by a Rapid Flash the ...

Страница 9: ...nd has been satisfied can be adjusted by moving the jumper to a different setting The unit is shipped with a factory fan off setting of 90 seconds For customized comfort monitor the supply air temperature once the heat demand is satisfied Note the supply air temperature at the instant the blower is de energized Adjust the fan off delay to achieve a supply air temperature between 90 110 at the inst...

Страница 10: ...only to clean without removing any part of the burners During operation flame is sensed by current passed through the flame and sensing electrode The ignition control allows the gas valve to remain open as long as flame signal is sensed NOTE The GDD95C is polarity sensitive Make sure that the furnace is wired correctly and is properly grounded A microamp DC meter is needed to check the flame signa...

Страница 11: ...ssure safety shut off If the gas valve must be replaced the same type valve must be used 24VAC terminals and gas control switch are located on top of the valve All terminals on the gas valve are connected to wires from the ignition control 24V applied to the terminals opens the valve Inlet and outlet pressure taps are located on the valve A manifold adjustment screw is also located on the valve An...

Страница 12: ... Set Dial to DC MicroAmps Multi Meter To Control Sensor T erminal T o Flame Terminal Remove Sensor Wire from Intergrated Control and Connect Alligator Clip to Terminal on Control Flame Sensor Terminal Flame Sensor Wire Remove Sensor Wire from Intergrated Control and Connect Alligator Clip to Frame Sensor Lead Intergrated Control ...

Страница 13: ... 3 Check ignitor for correct voltage Insert meter probes into terminals 2 and 4 use small diameter probes in order not to damage plug Check voltage during 20 second ignitor warm up period Voltage should read 120 volts 10 If voltage reads below these values check for correct supply voltage to furnace Integrated Control Detail Test 1 Check ignitor circuit for correct resistance Remove 4 pin plug fro...

Страница 14: ...ce to insure proper flow through the heat exchanger The switch is a SPST N O pressure switch electrically connected to the integrated control The purpose of the switch is to prevent burner operation if the combustion air inducer is not moving enough air for proper combustion Figure 10 Pressure Switch On start up the switch monitors whether the combustion air inducer is operating It closes a circui...

Страница 15: ...ine and with hose from the positive side of the manometer to the tee in the positive line NOTE tive However the port reads less negative pressure than the port 4 Operate unit and observe manometer reading Readings will change as heat exchanger warms a Take one reading immediately after start up b Take a second reading after unit has reached steady state approximately 5 minutes This will be the pre...

Страница 16: ... through Table 12 Wrong pressure switch installed in the unit or pressure switch is out of calibration Check that the correct pressure switch is installed in the unit Replace pressure switch if necessary Miswiring of furnace or improper connections at pressure switch Check for correct wiring and loose connections Correct wiring and or replace any loose connections Pressure switch failure If all th...

Страница 17: ...present in tests 1 and 2 and motor is not operating properly replace motor The motor is not field repairable If replacing the indoor blower motor or blower wheel is necessary placement is critical The blower wheel must be centered in the blower housing as shown in Figure 13 When replacing the indoor blower motor the set screw must be aligned and tightened with the motor shaft as shown in Figure 14...

Страница 18: ...g P49 If 24 volts is not present problem may be up stream of plug P49 Proceed to test 4 Multi Meter set to VAC 12 0 12 0 24 Multi Meter set to VAC problem is with the harness If voltage is not present problem may be may be with the integrated control Check for 120 volts across terminals CIRC and Neutrals on the integrated control If voltage is present problem is with the harness If voltage is not ...

Страница 19: ... 20 000 2 K two kilo ohms two thousand ohms 0 2 000 200 two hundred ohms 0 200 Motor Module Installation All replacement motor control modules look similar however each module is designed for a specific motor size It is very important to make sure that you are using the correct replacement motor control module USE OF THE WRONG MOTOR CONTROL MODULE MAY RESULT IN UNEXPECTED UNIT OPERATION 1 Verify e...

Страница 20: ...CPVC Low temperature solvent cement is recommended 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 NOTE Canadian Applications Only Pipe fittings primer and solvent cement used to vent exhau...

Страница 21: ...t of cement to pipe and while both inside socket surface and end of pipe are wet with cement forcefully insert end of pipe into socket until it bottoms out Turn PVC pipe 1 4 turn Capacity Vent Pipe Dia in Standard Concentric Outdoor Exhaust Accelerator Dia x Length Outdoor Exhaust Accelerator Dia x Length Flush Mount Kit 1 1 2 Concentric Kit 2 Concentric Kit 3 Concentric Kit 1 1 2 x 12 2 x 12 51W1...

Страница 22: ...n a residence where unit is shut down for an extended period of time such as a vacation home make provisions for draining condensate collection trap and lines Figure 20 CHIMNEY OR GAS VENT Check sizing for water heater only FURNACE Replaced by EL195 WATER HEATER OPENINGS To Adjacent Room If the furnace replaces a furnace which was commonly vented with another gas appliance appliance must be checke...

Страница 23: ...outside the home Table 10 lists the minimum vent pipe lengths permitted Table 11 through Table 12 lists the maximum pipe lengths permitted Regardless of the diameter of pipe used the standard roof and wall terminations described in section Exhaust Piping Terminations should be used Exhaust vent termination pipe is sized to optimize the velocity of the exhaust gas as it exits the termination Refer ...

Страница 24: ...045 070 090 110 Standard or Concentric See Table 9 Intake or Exhaust 1 1 2 2 2 1 2 or 3 Furnace capacity 1 Which termination 2 Which needs most elbows 3 How many 4 Desired pipe size 5 What is the altitude 6 Use Table 11 through Table 12 to find max pipe length 7 Figure 21 Vent Pipe Diameter Sizing ...

Страница 25: ... 11 65 45 n a 92 92 73 73 9 21 n a 60 40 87 87 68 68 10 16 55 35 82 82 63 63 Concentric Termination Elevation 0 10 000 ft Number of 90 Elbows Used 1 1 2 Pipe 2 Pipe 2 1 2 Pipe 3 Pipe Capacity Capacity Capacity Capacity 045 070 090 110 045 070 090 110 045 070 090 110 045 070 090 110 1 15 10 n a n a 53 38 22 n a 90 70 39 n a 111 111 104 104 2 10 n a 48 33 17 85 65 34 106 106 99 99 3 n a 43 28 12 80 ...

Страница 26: ... 070 090 110 045 070 090 110 045 070 090 110 1 15 10 n a n a 61 46 24 n a 100 80 43 n a 127 127 108 108 2 10 n a 56 41 19 95 75 38 122 122 103 103 3 n a 51 36 14 90 70 33 117 117 98 98 4 46 31 n a 85 65 28 112 112 93 93 5 41 26 80 60 23 107 107 88 88 6 36 21 75 55 18 102 102 83 83 7 31 16 70 50 13 97 97 78 78 8 26 11 65 45 n a 92 92 73 73 9 21 n a 60 40 87 87 68 68 10 16 55 35 82 82 63 63 NOTE Add...

Страница 27: ...e in horizontal runs of exhaust pipe When transitioning up in pipe size use the shortest length of 2 PVC pipe possible NOTE Exhaust pipe and intake pipe must be the same diameter Figure 23 Typical Intake Pipe Connections Direct Vent Applications 2 Pipe size determined in Table 11 or Table 12 2 2 2 2 or TOP VIEW EXHAUST INTAKE TRANSITION 3 2 2 TRANSITION 3 2 2 1 1 2 or TRANSITION NOTE 1 1 2 Vent Pi...

Страница 28: ...ke opening with the protective screen should always be directed forward or sideways 2 If intake air is drawn from a ventilated attic Figure 25 or ventilated crawlspace Figure 26 the exhaust vent length must not exceed those listed in Table 12 If 3 diameter pipe is used reduce to 2 diameter pipe at the termination point to accommodate the debris screen 3 Use a sheet metal screw to secure the intake...

Страница 29: ...anada for details Position termination according to location given in Figure 28 or Figure 37 In addition position termination so it is free from any obstructions and 12 above the average snow accumulation At vent termination care must be taken to maintain protective coatings over building materials prolonged exposure to exhaust condensate can destroy protective coatings It is recommended that the ...

Страница 30: ...0 10 16 16 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 included when measuring total length NOTE Maximum uninsulated vent lengths listed may include the termination...

Страница 31: ... 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 For clearances not specified in ANSI Z223 1 NFPA 54 or CSA...

Страница 32: ...should terminate straight down using two 90 elbows see Figure 29 4 Exhaust piping must terminate straight out or up as shown A reducer may be required on the exhaust piping at the point where it exits the structure to improve the velocity of exhaust away from the intake piping See Table 14 Capacity Exhaust Pipe Size Termination Pipe Size 045 070 2 51mm 21 2 64mm 3 76mm 1 1 2 38mm 90 2 51mm 110 045...

Страница 33: ...EET METAL STRAP Clamp and sheet metal strap must be field installed to support the weight of the termination kit FLASHING Not Furnished CLAMP FIELD PROVIDED REDUCER MAY BE REQUIRED TO ADAPT LARGER VENT PIPE SIZE TO TERMINATION 1 1 2 38mm accelerator provided on 71M80 44W92 kits for 045 and 070 models 12 305mm INTAKE AIR EXHAUST VENT Figure 35 Direct Vent Concentric Wall Termination 71M80 69M29 or ...

Страница 34: ...rance under veranda porch deck or balcony 12 Equal to or greater than soffit depth 3 feet 9m 12 3 feet 9m within a height 15 feet 4 5m above the meter regulator assembly 3 feet 9m 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 ...

Страница 35: ...EDUCTION TABLE 3 If exhaust piping must be run up a side wall to position above snow accumulation or other obstructions piping must be supported every 24 inches 610mm When exhaust piping must be run up an outside wall any reduction in exhaust pipe size must be done after the final elbow 4 Distance between exhaust pipe terminations on multiple furnaces must meet local codes Figure 39 Non Direct Ven...

Страница 36: ...ance 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 m...

Страница 37: ...ld end header box drain plugs are factory installed Check the unused plug for tightness to prevent leakage 3 Install the cap over the clean out opening at the base of the trap Secure with clamp See Figure 47 or Figure 48 4 Install drain trap using appropriate PVC fittings glue all joints Glue the provided drain trap as shown in Figure 47 or Figure 48 Route the condensate line to an open drain Cond...

Страница 38: ... drain 1 min 2 max Trap can be installed a maximum of 5ft from furnace PVC only Field Provided Vent 1 min 2 max above condensate drain Piping from furnace must slope down a minimum 1 4 per ft toward trap Figure 44 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 FurnaceCondensate...

Страница 39: ... 2 inch 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 ...

Страница 40: ...ow 1 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 Dra...

Страница 41: ...e heating demand 5 Wait for the combustion air inducer to stop Set the thermostat to initiate a heating demand and again allow the burners to fire for approximately 3 minutes 6 Adjust the thermostat to deactivate the heating demand and again wait for the combustion air inducer to stop At this point the trap should be primed with sufficient water to ensure proper condensate drain operation If you d...

Страница 42: ... be resistant to action of liquefied petroleum gases Testing Gas Piping In case emergency shutdown is required turn off the main shut off valve and disconnect the main power to unit These controls should be properly labeled by the installer IMPORTANT When pressure testing gas lines the gas valve must be disconnected and isolated Gas valves can be damaged if subjected to more than 0 5 psig 14 W C S...

Страница 43: ...nometer as soon as an accurate reading has been obtained Take care to remove barbed fitting and replace threaded plug 6 Start unit and perform leak check Seal leaks if found Capacity Gas Manifold Pressure in w g Supply Line Pressure in w g 0 10 000 ft 0 4500 ft 4501 5500 ft 5501 6500 ft 6501 7500 ft 7501 10000 ft All Sizes Natural 3 5 3 3 3 2 3 1 3 5 4 5 13 0 LP Propane 10 0 9 4 9 1 8 9 10 0 11 0 ...

Страница 44: ... 000 feet require an orifice change Units installed at altitudes of 4501 10 000 feet 1373 to 3048 m require a pressure switch change which can be ordered separately Table 15 lists conversion kit and pressure switch requirements at varying altitudes The combustion air pressure switch is factory set and requires no adjustment Capacity 0 7 500 ft 0 2 286m 7 501 10 000 ft 2 286 3 048 m Natural to LP P...

Страница 45: ...n in the voltage between Line Neutral and C as a function of load indicates a poor or partial ground Compare the readings to Table 20 If the readings exceed the maximum shown in Table 20 make repairs before operating the furnace 2 In addition measure the AC voltage from Line Hot to Line Neutral spade terminals on the integrated control See Figure 52 This voltage should be in the range of 97 to 132...

Страница 46: ...nd return air plenums Insert manometer hose flush with inside edge of hole or insulation Seal around the hose with permagum Connect the zero end of the manometer to the discharge supply side of the system On ducted systems connect the other end of manometer to the return duct as above 3 With only the blower motor running and the evaporator coil dry observe the manometer reading Adjust blower motor...

Страница 47: ... 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 check the specifications pr...

Страница 48: ...r collector box 11 Mark and remove wires from pressure switch assembly Remove pressure switch assembly Keep tubing attached to pressure switch assembly 12 Disconnect the 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 13 Remove electrical junction box from the side ...

Страница 49: ...ter leak test has been completed Do not use matches candles flame or other sources of ignition to check for gas leaks CAUTION Cleaning the Burner Assembly if needed 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 if equipped 4 Disconnect the gas supply line from the gas...

Страница 50: ...508115 01 Issue 2043 Page 50 of 54 Wiring Diagram ...

Страница 51: ...GIZED GAS VALVE OFF COMBUSTION AIR INDUCER ON INDOOR BLOWER ON HEATING SPEED LED FLASHES CODE 11 PRESSURE SWITCH CLOSED GAS VALVE OFF COMBUSTION AIR INDUCER OFF INDOOR BLOWER OFF WITH DELAY Sequence holds until pressure switch opens or thermostat resets control NO NO YES YES IS VOLTAGE ABOVE 70 VOLTS LED FLASHES CODE 13 LOW LINE VOLTAGE CONTROL WILL NOT RESPOND TO A CALL FOR HEATING UNTIL VOLTAGE ...

Страница 52: ...FF WITH DELAY IS 60 MINUTE RESET PERIOD COMPLETE YES 4 SECONDS YES HAS CONTROL RESET IGNITION SEQUENCE FOUR TIMES FLAME SIGNAL 1 5 MICROAMPS OR GREATER YES YES YES ROLLOUT SWITCH CLOSED LED FLASHES CODE 8 ROLLOUT SWITCH OPEN GAS VALVE POWER OFF COMBUSTION AIR INDUCER POWER ON INDOOR BLOWER ON SEQUENCE HOLDS UNTIL ROLLOUT SWITCH IS RESET AND MAIN POWER IS INTERRUPTED OR THERMOSTAT IS CYCLED OFF ON ...

Страница 53: ...ONITORED CONTINUOUSLY IS ROLLOUT SWITCH CLOSED LED SLOW FLASH RATE REMAINS UNCHANGED THROUGHOUT COOLING CYCLE THERMOSTAT CALLS FOR COOLING COMPRESSOR CONTACTOR AND SYSTEM FAN ENERGIZED WITH 2 SECOND DELAY COOLING SPEED COMPRESSOR OFF THERMOSTAT OPENS SYSTEM FAN AND EAC TERM OFF WITH 45 SECOND DELAY NO NO LED FLASHES CODE 8 ROLLOUT SWITCH OPEN GAS VALVE OFF COMBUSTION AIR INDUCER ON INDOOR BLOWER O...

Страница 54: ...G THERMOSTAT OPENS SYSTEM FAN SWITCHED TO COOL SPEED EAC TERM REMAINS ON THERMOSTAT OPENS MANUAL FAN SELECTION MADE AT THERMOSTAT CONTROL G ENERGIZES SYSTEM FAN AT FAN SPEED EAC TERM ENERGIZED NO YES YES NO SYSTEM FAN SWITCHES TO HEAT SPEAD AFTER 30 SECOND DELAY EAC AND HUM TERMINALS REMAIN ON SYSTEM FAN CONTINUES FAN SPEED WITHOUT INTERRUPTION EAC TERMINAL REMAIN ON HUM TERMINALS ARE ENERGIZED WI...

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