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Page 33

31-5000726 Rev. 0

On field-supplied terminations, a minimum distance

between the end of the exhaust pipe and the end of

the intake pipe without a termination elbow is 8” and a

minimum distance of 6” with a termination elbow. See

Figure 36.

If intake and exhaust piping must be run up a side

wall to position above snow accumulation or other

obstructions, piping must be supported. At least one

bracket must be used within 6” from the top of the

elbow and then every 24” (610mm) as shown in Figure

36, to prevent any movement in any direction. When

exhaust and intake piping must be run up an outside

wall, the exhaust piping must be terminated with pipe

sized per Table 12. The intake piping may be equipped

with a 90° elbow turndown. Using turndown will add 5

feet (1.5m) to the equivalent length of the pipe.

A multiple furnace installation may use a group of up to

four terminations assembled together horizontally, as

shown in Figure 28.

5-1/2”

(140mm)

12”

(305mm)

5”

(127mm)

18” MAX.

(457mm)

EXHAUST

Vent

INTAKE

Air

EXHAUST VENT

Side View

Optional intake elbow

Inches (mm)

INTAKE

AIR

Front View

12” (305mm) Min.

above grade or

average snow

accumulation

Figure 28. Optional Vent Termination for Multiple Unit

Installation of Direct Vent Wall Termination

Minimum

Above Average

Snow

Accumulation

SHEET 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

12” (305mm)

INTAKE

AIR

EXHAUST

VENT

Figure 29. Direct Vent Concentric Rooftop

Termination

71M80, 69M29 or 60L46 (US)

44W92 or 44W93 (Canada)

Figure 30. 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 PLATE

ALTERNATE

INTAKE PIPE

INSULATION (optional)

EXTERIOR

PORTION OF

CHIMNEY

INSULATE

TO FORM

SEAL

SHEET

METAL TOP

PLATE

8” - 12”

(203mm - 305mm)

* SIZE TERMINATION

PIPE PER EXHAUST

PIPE TERMINATION

SIZE REDUCTION

TABLE

3” - 8”

(76mm -

203mm)

3” - 8”

(76mm -

203mm)

Minimum 12” (305mm)

above chimney top

plate or average snow

accumulation

NOTE:

Do not discharge exhaust gases directly into any chimney

or vent stack. If vertical discharge through an existing unused

chimney or stack is required, insert piping inside chimney until

the pipe open end is above top of chimney and terminates as

illustrated. In any exterior portion of chimney, the exhaust vent

must be insulated.

12” (305mm) Min.

above grade or

average snow

accumulation.

INTAKE

AIR

INTAKE

AIR

INTAKE

AIR

OUTSIDE

WALL

GRADE

CLAMP

(Not Furnished)

FIELD-PROVIDED

REDUCER MAY BE REQUIRED

TO ADAPT LARGER VENT

PIPE SIZE TO TERMINATION

EXHAUST

VENT

EXHAUST

VENT

Figure 31. Direct Vent Concentric Wall Termination

71M80, 69M29 or 60L46 (US)

44W92 or 44W93 (Canada)

2” EXTENSION FOR 2” PVC PIPE

1” EXTENSION FOR 3” PVC PIPE

1-1/2” ACCELERATOR

FURNACE

EXHAUST

PIPE

FURNACE

INTAKE

PIPE

4''

GLUE EXHAUST

END FLUSH INTO

TERMINATION

FLAT

SIDE

Figure 32. Flush-Mount Side Wall Termination 51W11

Содержание GE NF96UV

Страница 1: ...31 5000726 Rev 0 10 22 GEA NF96UV 96 Upflow Horizontal Two Stage Variable Speed Gas Furnace Service Manual READ CAREFULLY KEEP THESE INSTRUCTIONS...

Страница 2: ...l 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 electr...

Страница 3: ...5 7 7 40 154 NF96U090V5C 57 000 55 000 88 000 85 000 96 0 5 1 2 120 60 1 20 12 8 40 166 NF96U110V5C 72 000 70 000 110 000 105 000 96 0 5 1 2 120 60 1 15 12 8 40 173 NF96U135V5C 88 000 84 000 132 000 1...

Страница 4: ...945 1100 1245 Norm 830 935 980 1084 720 840 970 1115 30 60 Low Fire 960 1040 1120 1206 1st Stage 625 710 830 950 875 945 995 1100 565 670 760 860 Norm 790 840 920 950 520 610 685 785 NF96U090V5C 1 11...

Страница 5: ...idth 68W63 21 0 C Width 68W64 24 5 D Width Flush Mount Termination 90 Furnaces only 51W11 2 3 0 Vent US Concentric Vent Kit 90 Furnaces only 71M80 1 1 2 Vent Version US 69M29 2 Vent Version US 60L46 3...

Страница 6: ...726 Rev 0 Parts Arrangement Figure 1 CONTROL BOX BLOWER ASSEMBLY ACCESS PANEL COMBUSTION AIR INDUCER FLUE COLLAR BURNER BOX ASSEMBLY BLOWER DECK PRIMARY LIMIT CABINET HEAT EXCHANGER ASSEMBLY GAS VALVE...

Страница 7: ...ensure furnace ignition and ignitor durability The control provides gas ignition safety checks and indoor blower control with two stage gas heating The furnace combustion air inducer gas valve and ind...

Страница 8: ...100 CFM count the flashes and multiply by 100 to determine the actual CFM delivered for example 5 flashes x 100 500 CFM Pin Function 1 Gas Valve Second Stage 2 Second Stage Prove Switch 3 Rollout Swit...

Страница 9: ...Humidifier 120VAC Line Input 120VAC XFMR Transformer 120VAC EAC Indoor Air Accessory 120VAC Cool Cool Speed 120VAC Park 1 Dead terminal for alternate speed tap Park 2 Dead terminal for alternate speed...

Страница 10: ...earings MOTOR CONTROLLER J49 J48 Figure 5 GenTeq Blower Motor B3 STATOR WINDINGS OUTPUT SHAFT BEARING ROTOR Figure 6 Blower Motor Components Internal Operation Each time the controller switches a stat...

Страница 11: ...is the power plug Line voltage must be applied to J48 pins 4 and 5 in order for the motor to operate When using 120VAC pins 1 and 2 must be jumpered Jack J49 connects the unit controls to the motor Th...

Страница 12: ...AT output from controller to motor windings O volts 325VDC One revolution O volts 325VDC O volts 325VDC WINDING 1 WINDING 2 WINDING 3 O volts 325VDC O volts 325VDC O volts 325VDC WINDING 1 WINDING 2 W...

Страница 13: ...e 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 remov...

Страница 14: ...Page 14 31 5000726 Rev 0 Intake Air Top Cap Sensor Rollout Switch Rollout Switch Burner Assembly Ignitor Manifold And Gas Orifices Two Stage Gas Valve Burner Box Cover Figure 9 Heating Components...

Страница 15: ...ug Reading should be between 39 and 70 ohms If the reading is correct then the problem is with the wiring between the jack plug and the control If reading is not correct the issue is the ignitor Test...

Страница 16: ...e Tap positive Unit Set Point Low Heat Set Point High Heat 045 0 40 0 70 070 0 50 0 85 090 0 50 0 85 110 0 50 0 90 135 0 45 0 90 Table 6 Pressure Switch Setting 0 4500 Pressure Switch Check To check p...

Страница 17: ...Page 17 31 5000726 Rev 0 Black Tubing positive Red and Black or Red Tubing negative Tee 2 long Square Tubing Measuring Device 10 Long Square Tubing Figure 12 Pressure Switch Check...

Страница 18: ...commended 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 socke...

Страница 19: ...to end of pipe 7 Immediately after applying last coat of cement to pipe and while both inside socket surface and end of pipe NF96UV VENT PIPE DIA in STANDARD CONCENTRIC Outdoor Exhaust Accelerator Dia...

Страница 20: ...er only FURNACE WATER HEATER OPENINGS To Adjacent Room If the NF96UV furnace replaces a furnace that was commonly vented with another gas appliance the size of the existing vent pipe for that gas appl...

Страница 21: ...t the problem Resize the common venting system to the minimum vent pipe size determined by using the appropriate tables in Appendix G These are in the current standards of the National Fuel Gas Code A...

Страница 22: ...utdoors 1 Use transition solvent cement or a sheet metal screw to secure the intake pipe to the inlet air connector 2 Route piping to outside of structure Continue with installation following instruct...

Страница 23: ...shortest length of 2 PVC pipe possible NOTE Exhaust pipe and intake pipe must be the same diameter TYPICAL INTAKE PIPE CONNECTIONS IN HORIZONTAL DIRECT OR NON DIRECT VENT APPLICATION RIGHT HAND DISCHA...

Страница 24: ...n sizing vent pipe in these applications NOTE The exhaust collar on all models is sized to accommodate 2 Schedule 40 vent pipe In horizontal applications any transition to exhaust pipe larger than 2 m...

Страница 25: ...n exhaust or intake terminations Doing so will cause freeze ups and may block the terminations IMPORTANT Model Min Vent Length All 15 ft or 5 ft plus 2 elbows or 10 ft plus 1 elbow Any approved termin...

Страница 26: ...0 70 48 13 93 92 73 73 69 10 31 16 65 65 43 8 88 87 68 68 64 Standard Termination Elevation 4500 10 000 ft Number of 90 Elbows Used 1 1 2 Pipe 2 Pipe 2 1 2 Pipe 3 Pipe Model Model Model Model 45 70 90...

Страница 27: ...0 60 44 9 76 76 69 69 60 10 23 8 55 55 39 n a 71 71 64 64 55 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 45 70...

Страница 28: ...10 21 6 50 50 28 68 67 48 48 44 Standard Termination at Elevation 4500 10 000 ft Number of 90 Elbows Used 1 1 2 Pipe 2 Pipe 2 1 2 Pipe 3 Pipe Model Model Model Model 45 70 90 110 135 45 70 90 110 135...

Страница 29: ...protective coatings over building materials prolonged exposure to exhaust condensate can destroy protective coatings It is recommended that the exhaust outlet not be located within 6 feet 1 8m of an o...

Страница 30: ...6 14 14 23 23 0 to 20 18 to 29 1 1 2 in 8 N A 13 N A N A N A N A N A N A N A 2 in 6 4 12 10 19 16 18 15 N A N A 2 1 2 in N A N A 7 N A 13 N A 12 N A N A N A 3 in N A N A N A N A 8 8 7 7 13 13 1 Refer...

Страница 31: ...s 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 Btu...

Страница 32: ...t Air Minimum 12 in 305MM above grade or snow accumulation Figure 26 Exiting Exhaust and Intake Vent no common pressure zone 2 Intake and exhaust pipes should be placed as close together as possible a...

Страница 33: ...PROVIDED REDUCER MAY BE REQUIRED TO ADAPT LARGER VENT PIPE SIZE TO TERMINATION 12 305mm INTAKE AIR EXHAUST VENT Figure 29 Direct Vent Concentric Rooftop Termination 71M80 69M29 or 60L46 US 44W92 or 44...

Страница 34: ...above paved sidewalk or paved driveway located on public property Clearance 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...

Страница 35: ...exhaust pipe size must be done after the final elbow 4 Distance between exhaust pipe terminations on multiple furnaces must meet local codes UNCONDITIONED ATTIC SPACE 3 76MM OR 2 51MM PVC PROVIDE SUP...

Страница 36: ...bove 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 ea...

Страница 37: ...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 Ma...

Страница 38: ...elbow fitting into cold end header box Use Teflon tape or appropriate pipe dope NOTE Cold end header box drain plugs are factory installed Check the unused plug for tightness to prevent leakage 3 Ins...

Страница 39: ...not possible a heat cable kit may be used on the condensate trap and line Heating cable kit is available in various lengths 6 ft 1 8m kit no 26K68 24 ft 7 3m kit no 26K69 and 50 ft 15 2m kit no 26K70...

Страница 40: ...required Trap at coil is optional Field Provided Vent Figure 43 Furnace with Evaporator Coil Using a Common Drain Unit shown in horizontal left hand discharge position Condensate Drain Connection 4 m...

Страница 41: ...h 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 Conde...

Страница 42: ...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...

Страница 43: ...ove the switch Never use tools If the the switch will not move by hand replace the valve Do not try to repair it Force or attempted repair may result in a fire or explosion Placing the Furnace into Op...

Страница 44: ...ontrol to shut the unit off 6 Is gas turned on at the meter 7 Is the manual main shut off valve open 8 Is the internal manual shut off valve open 9 Is the unit ignition system in lockout If the unit l...

Страница 45: ...ted 1 Connect the test gauge positive side to manifold pressure tap on gas valve as noted above 2 Tee into the gas valve regulator vent hose and connect to test gauge negative 3 Ignite unit on low fir...

Страница 46: ...00ft 6501 7500ft 7501 10000ft Low Fire High Fire Low Fire High Fire Low Fire High Fire Low Fire High Fire Low Fire High Fire Min Max All Models Natural 1 7 3 5 1 6 3 3 1 5 3 2 1 5 3 1 1 7 3 5 4 5 13 0...

Страница 47: ...n of load indicates a poor or partial ground Compare the readings to Table 17 If the readings exceed the maximum shown in Table 17 make repairs before operating the furnace 2 In addition measure the A...

Страница 48: ...Temperature Rise ________ SUPPLY AIR Temperatures RETURN AIR Figure 50 Temperature Rise External Static Pressure 1 Tap locations shown in Figure 51 2 Punch a 1 4 diameter hole in supply and return air...

Страница 49: ...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 f...

Страница 50: ...ssure switch assembly Remove the assembly Keep tubing attached to pressure switches 14 Disconnect the plug from the combustion air inducer Remove two screws which secure combustion air inducer to coll...

Страница 51: ...res from the gas valve 3 Remove the burner box cover if equipped 4 Disconnect the gas supply line from the gas valve Remove gas valve manifold assembly 5 Mark and disconnect sensor wire from the senso...

Страница 52: ...ING OF AT LEAST 90 c 2 PROPER POLARITY MUST BE OBSERVED FOR FIELD LINE VOLTAGE SUPPLY IGNITION CONTROL WILL LOCK OUT IF POLARITY IS REVERSED 3 FOR TEMPORARY SERVICE REPLACEMENT OF CIRCULATING BLOWER M...

Страница 53: ...ains energized until the limits are closed Fan On When the thermostat is set for continuous fan operation and there is no demand for heating or cooling a call for fan closes the R to G circuit and the...

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