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507762-01

Issue 1907

Page 1 of 46

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INSTALLATION INSTRUCTIONS

95G1UHEX

Warm Air Gas Furnace

Upflow / Horizontal Left and Right Air Discharge

(P) 507762-01

*P507762-01*

Manufactured By

Allied Air Enterprises LLC

A Lennox International, Inc. Company

215 Metropolitan Drive

West Columbia, SC 29170

This manual must be left with the homeowner for future reference.

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.

As with any mechanical equipment, personal injury can

result from contact with sharp sheet metal edges. Be

careful when you handle this equipment.

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

Table of Contents

Unit Dimensions ..........................................................

95G1UHEX Gas Furnace ............................................

Shipping and Packing List ...........................................

General ........................................................................

Combustion, Dilution & Ventilation Air .........................

Installation - Setting Equipment ...................................9

Filters .........................................................................

Duct System ..............................................................

Pipe & Fittings Specifications ....................................

Joint Cementing Procedure .......................................

Venting Practices .......................................................

Vent Piping Guidelines ..............................................

Condensate Piping ....................................................

Gas Piping

.................................................................

Electrical ....................................................................

Unit Start-Up ..............................................................

Gas Pressure Adjustment ..........................................

Proper Combustion....................................................

High Altitude Information ...........................................

Testing for Proper Venting and Sufficient Combustion Air

for Non-Direct Vent Applications ................................

Other Unit Adjustments..............................................

Service.......................................................................

Repair Parts List ........................................................

Содержание 95G1UH040BE12X

Страница 1: ... this equipment 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 Table of Contents Unit Dimensions 2 95G1UHEX Gas Furnace 3 Shipping and Packing List 3 General 5 Combustion D...

Страница 2: ...urn Air Opening A B 9 16 14 C 3 4 33 838 16 406 14 3 4 375 2 OPTIONAL SIDE RETURN AIR FILTER KIT Either Side 5 8 16 6 9 16 167 Left 9 229 Right INTAKE AIR Unit Dimensions Model A B C in mm in mm in mm 95G1UH040BE12X 95G1UH060BE12X 17 1 2 446 16 3 8 416 16 406 95G1UH080CE16X 95G1UH100CE20X 21 553 19 7 8 505 19 1 2 495 1 NOTE 60C size units that require second stage air volumes over 1800 cfm must ha...

Страница 3: ... trap cap 1 Condensate trap clamp 1 2 diameter debris screen 1 3 4 Threaded street elbow Check equipment for shipping damage If you find any damage immediately contact the last carrier The following items may also be ordered separately 1 Thermostat 1 Return air base kit 1 Horizontal suspension kit Improper installation adjustment alteration service or maintenance can cause property damage personal...

Страница 4: ... cause erratic limit operation and premature heat exchanger failure This 95G1UHEX furnace must be installed so that its electrical components are protected from water Installed in Combination with a Cooling Coil When this furnace is used with cooling coils Figure 3 it shall be installed in parallel with or on the upstream side of cooling coils to avoid condensation in the heating compartment With ...

Страница 5: ...URE TO FOLLOW THE ABOVE INSTALLATION INSTRUCTIONS FAILURE TO FOLLOW THE ABOVE INSTALLATION INSTRUCTIONS VOIDS THE MANUFACTURER S EQUIPMENT LIMITED WARRANTY ALLIED AIR DISCLAIMS ALL LIABILITY IN CONNECTION WITH INSTALLER S FAILURE TO FOLLOW THE ABOVE INSTALLATION INSTRUCTIONS General These instructions are intended as a general guide and do not supersede local codes in any way Consult authorities h...

Страница 6: ...ed at the same time as the furnace much more air is required to ensure proper combustion and to prevent a downdraft Insufficient air causes incomplete combustion which can result in carbon monoxide In addition to providing combustion air fresh outdoor air dilutes contaminants in the indoor air These contaminants may include bleaches adhesives detergents solvents and other contaminants which can co...

Страница 7: ...ly communicate with the outdoors or indirectly through vertical ducts Each opening shall have a minimum free area of 1 square inch 645 mm2 per 4 000 Btu 1 17 kW per hour of total input rating of all equipment in the enclosure See Figure 5 and Figure 8 When communicating with the outdoors through horizontal ducts each opening shall have a minimum free area of 1 square inch 645 mm2 per 2 000 Btu 56 ...

Страница 8: ...c OUTLET AIR INLET AIR ROOF TERMINATED EXHAUST PIPE SIDE WALL TERMINATED EXHAUST PIPE ALTERNATE LOCATION FURNACE NOTE Each air duct opening shall have a free area of at least one square inch per 2 000 Btu 645mm2 per 59kW per hour of the total input rating of all equipment in the enclosure If the equipment room is located against an outside wall and the air openings communicate directly with the ou...

Страница 9: ...ght seal to the furnace Allow absolutely no sagging cracks gaps etc For no reason should return and supply air duct systems ever be connected to or from other heating devices such as a fireplace or stove etc Fire explosion carbon monoxide poisoning personal injury and or property damage could result WARNING Top Bottom Floor Left Side Right Side Top Plenum 1 in 25 mm Front 1 in 25 mm Back 1 in 25 m...

Страница 10: ...DOOR AIR QUALITY CABINET AIR BASE OPTIONAL RETURN 17 1 2 446 B Width 68W62 21 533 C Width 68W63 24 1 2 622 D Width 68W64 NOTE Optional side return air filter kits are not for use with return air base 1 Both the unit return air opening and the base return air opening must be covered by a single plenum or IAQ cabinet Minimum unit side return air opening dimensions for units requiring 1800 cfm of air...

Страница 11: ...quivalent Front Back Do Not install the furnace on its front or back Figure 16 Left Hand Discharge Top Bottom Floor d n E t h g i R d n E t f e L AIR FLOW d n E t h g i R d n E t f e L Right Hand Discharge Bottom Floor Air Flow Air Flow AIR FLOW Top 1 in 25 mm Front 1 in 25 mm Back 1 in 25 mm Ends 1 in 25 mm Vent 1 in 25 mm Floor 1 in 25 mm Front clearance in alcove installation must be 24 in 610 ...

Страница 12: ...rough the end of a furnace installed in the horizontal position The furnace is equipped with a removable bottom panel to facilitate installation See Figure 15 Filters This unit is not equipped with a filter or rack Afield provided high velocity rated filter is required for the unit to operate properly Table 1 lists recommended filter sizes A filter must be in place whenever the unit is operating F...

Страница 13: ...t the unit operates properly and safely Use fiberglass sealing strips caulking or equivalent sealing method between the plenum and the furnace cabinet to ensure a tight seal If a filter is installed size the return air duct to fit the filter frame Pipe Fittings Specifications All pipe fittings primer and solvent cement must conform withAmerican National Standard Institute and theAmerican Society f...

Страница 14: ... coupling must be installed with provided appliance adapter See Figure 23 Joint Cementing Procedure All cementing of joints should be done according to the specifications outlined in ASTM D 2855 DANGER OF EXPLOSION Fumes from PVC glue may ignite during system check Allow fumes to dissipate for at least 5 minutes before placing unit into operation DANGER 1 Measure and cut vent pipe to desired lengt...

Страница 15: ...S 5 YES YES YES 3 3 YES YES 5 YES YES YES NOTE Standard Terminations do not include any vent pipe or elbows external to the structure Any vent pipe or elbows external to the structure must be included in total vent length calculations See vent length tables Kits must be properly installed according to kit instructions 1 Requires field provided outdoor 1 1 2 exhaust accelerator 2 Concentric kits 71...

Страница 16: ... positive pressure and must be completely sealed to prevent leakage of combustion products into the living space CAUTION Venting Practices See table 2 for allowable pipe NOTE Isolate piping at the point where it exits the outside wall or roof in order to prevent transmission of vibration to the structure SCHEDULE 40 PVC 5 all other pipe 3 Wall e d i s t u o e d i s n i 24 maximum 3 4 minimum Wall ...

Страница 17: ...ize the velocity of the exhaust gas as it exits the termination Refer to Table 8 PVC Exhaust Pipe Vent Adaptor Furnace Exhaust Coupling Furnace Top Panel Top Band Bottom Band Figure 23 Appliance Adaptor to Exhaust Coupling In some applications which permit the use of several different sizes of vent pipe a combination vent pipe may be used Contact the Allied Air Application Department for assistanc...

Страница 18: ... Standard or Concentric See Table 3 Intake or Exhaust 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 5 or 6 to find max pipe length or exhaust pipe length Includes all vent pipe and elbows inside and outside the house 7 Figure 25 ...

Страница 19: ... Concentric Termination at Elevation 0 4500 ft Number of 90 Elbows Used 2 Pipe 3 Pipe Model Model 040 060 080 100 040 060 080 100 1 73 58 42 22 121 121 114 114 2 68 53 37 17 116 116 109 109 3 63 48 32 12 111 111 104 104 4 58 43 27 n a 106 106 99 99 5 53 38 22 101 101 94 94 6 48 33 17 96 96 89 89 7 43 28 12 91 91 84 84 8 38 23 n a 86 86 79 79 9 33 18 81 81 74 74 10 28 13 76 76 69 69 NOTE Size intak...

Страница 20: ...36 14 98 97 78 78 6 46 31 9 93 92 73 73 7 41 26 4 88 87 68 68 8 36 21 n a 83 82 63 63 9 31 16 78 77 58 58 10 26 11 73 72 53 53 NOTE Additional vent pipe and elbows used to terminate the vent pipe outside the structure must be included in the total vent length calculation When transitioning up in pipe size use the shortest length of 2 PVC pipe possible TRANSITION 2 2 2 3 2 2 or DO NOT transition fr...

Страница 21: ... pipe to the inlet air connector 2 Route piping to outside of structure Continue with installation following instructions given in general guidelines for piping terminations and intake and exhaust piping terminations for direct vent sections Refer to Table 5 for pipe sizes INTAKE DEBRIS SCREEN Provided Figure 28 Typical Air Intake Pipe Connections Upflow Non Direct Vent Applications NOTE Debris sc...

Страница 22: ...er exhaust fan or other device which may create a negative pressure in the space take care when sizing the inlet air opening The inlet air opening must be sized to accommodate the maximum volume of exhausted air as well as the maximum volume of combustion air required for all gas appliances serviced by this space CAUTION Ventilation Louvers Inlet Air Minimum 12 in 305mm above Attic Floor Roof Term...

Страница 23: ...in Canada for details Position termination according to location given in Figure 33 or Figure 43 In addition position termination so it is free from any obstructions and 12 above the average snow accumulation Conditioned Space Unconditioned Space Exhaust Pipe Intake Pipe Conditioned Space Pipe Insulation Figure 32 Insulating Exhaust Pipe in an Unconditioned Space At vent termination care must be t...

Страница 24: ...tor assembly 3 feet 9m 6 inches 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 cu...

Страница 25: ...intake and exhaust pipe DOES NOT apply 3 On roof terminations the intake piping should terminate straight down using two 90 elbows see Figure 34 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 8 NOTE Care must be taken to avo...

Страница 26: ... average snow accumulation 8 12 203MM 305MM 3 8 76MM 203MM SIZE TERMINATION PIPE PER EXHAUST PIPE TERMINATION SIZE REDUCTION TABLE 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 e...

Страница 27: ...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 28: ...y 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 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 ...

Страница 29: ...VE AVE SNOW ACCUMULATION SIZE PER EXHAUST PIPE TERMINATION SIZE REDUCTION TABLE Figure 44 Non Direct Vent Roof Termination Kit 15F75 Or 44J41 Crawl Space and Extended Horizontal Venting Allied Air provides kit 51W18 USA or kit 15Z70 Canada to install 2 or 3 PVC exhaust piping through the floor joists and into the the crawl space See Figure 46 This kit can also be used as a supplemental drain for i...

Страница 30: ...oute the condensate line to an open drain Condensate line must maintain a 1 4 downward slope from the furnace to the drain 5 Figure 51 and Figure 53 show the furnace and evaporator coil using a separate drain If necessary the condensate line from the furnace and evaporator coil can drain together See Figure 50 Figure 52 and Figure 54 Upflow furnace Figure 52 In upflow furnace applications the fiel...

Страница 31: ... Figure 50 Condensate Trap With Optional Overflow Switch Condensate DrainConnection Field Provided Vent 1 min 2 max above condensate connection Evaporator drain line required Trap at coil is optional Figure 51 Furnace with Evaporator Coil Using a Separate Drain 1 min to 2 Max above condensatedrain connection Condensate DrainConnection Evaporator drain line required Trap at coil is optional Figure ...

Страница 32: ...e condensate drain connection Trap at coil is optional 4 min 5 max Figure 53 Furnace with Evaporator Coil Using a Separate Drain Unit shown in horizontal left hand discharge position Condensate Drain Connection 4 min to 5 Max above condensate drain connection 5 max PVC Pipe Only Evaporator Coil Drain Pan Piping from furnace and evaporator coil must slope down a minimum 1 4 per ft toward trap Trap ...

Страница 33: ...rnished 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 Max Above Top Of Con...

Страница 34: ... 2 44 to 3 05m using suitable hangers or straps Install a drip leg in vertical pipe runs to serve as a trap for sediment or condensate 5 A 1 8 N P T plugged tap or pressure post is located on the gas valve to facilitate test gauge connection See Figure 62 6 In some localities codes may require installation of a manual main shut off valve and union furnished by installer external to the unit Union ...

Страница 35: ...IDED AND INSTALLED NOTE BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET Figure 58 Possible Gas Piping Configurations Horizontal Applications Removal of the Furnace from Common Vent In the event that an existing furnace is removed from a venting system commonly run with separate gas appliances the venting system is likely to be too large to properly vent the remaining attached appliances Conduc...

Страница 36: ...7 09 768 22 25 657 18 60 583 16 50 528 14 95 486 13 76 452 12 79 424 12 00 400 11 33 1 1 2 38 1 1 610 40 894 2090 59 18 1430 40 49 1150 32 56 985 27 89 873 24 72 791 22 39 728 20 61 677 19 17 635 17 98 600 17 00 2 50 8 2 067 52 502 4020 113 83 2760 78 15 2200 62 30 1900 53 80 1680 47 57 1520 43 04 1400 39 64 1300 36 81 1220 34 55 1160 32 84 2 1 2 63 5 2 469 67 713 6400 181 22 4400 124 59 3530 99 9...

Страница 37: ...erly sized disconnect switch near the furnace so that power can be turned off for servicing Before connecting the thermostat check to make sure the wires will be long enough for servicing at a later date Make sure that thermostat wire is long enough to facilitate future removal of blower for service Complete the wiring connections to the equipment Use the provided unit wiring diagram and the field...

Страница 38: ...re is no cooling or heating demand 2 When the 95G1UHEX is running in the heating mode the indoor blower will run on the heating speed HEAT 3 When there is a cooling demand the indoor blower will run on the cooling speed COOL Generator Use Voltage Requirements The following requirements must be kept in mind when specifying a generator for use with this equipment The furnace requires 120 volts 10 Ra...

Страница 39: ...507762 01 Issue 1907 Page 39 of 46 Figure 61 ...

Страница 40: ... should be primed with water prior to start up to ensure proper condensate drainage Either pour 10 fl oz 300 ml of water into the trap or follow these steps to prime the trap 1 Follow the lighting instructions to place the unit into operation 2 Set the thermostat to initiate a heating demand 3 Allow the burners to fire for approximately 3 minutes 4 Adjust the thermostat to deactivate the heating d...

Страница 41: ...f the appliance will not operate follow the instructions Turning Off Gas to Unit and call your service technician or gas supplier Turning Off Gas to Unit 1 Set the thermostat to the lowest setting 2 Turn off all electrical power to the unit if service is to be performed 3 Remove the access panel 4 Move gas valve switch to OFF 5 Replace the access panel Failure to Operate If the unit fails to opera...

Страница 42: ...old Pressure To correctly measure manifold pressure follow the steps below 1 Remove the threaded plug from the outlet side of the gas valve and install a field provided barbed fitting Connect measuring device connection to barbed fitting to measure manifold pressure 2 Start unit and allow 5 minutes for unit to reach steady state 3 After allowing unit to stabilize for 5 minutes record manifold pres...

Страница 43: ...ny appliances not connected to the venting system Turn on any exhaust fans such as range hoods and bathroom exhausts so they will operate at maximum speed Do not operate a summer exhaust fan 6 Follow the lighting instruction to place the appliance being inspected into operation Adjust thermostat so appliance will operate continuously 7 Use the flame of match or candle to test for spillage of flue ...

Страница 44: ...turn air temperatures See Figure 63 The cool fan off delay amount of time that the blower operates after the cool demand has been satisfied is 45 seconds and not adjustable To adjust fan off timing reposition jumper across pins to achieve desired setting NO JUMPER 60 90 120 180 60 90 120 180 60 90 120 180 60 90 120 180 60 Second off Time 90 Second off Time 120 Second off Time 180 Second off Time F...

Страница 45: ...rnace is installed must be properly sized open and unobstructed to provide combustion air 9 Inspect the furnace intake and exhaust pipes to make sure they are in place structurally sound without holes blockage or leakage and the exhaust pipe is sloped toward the furnace Inspect terminations to ensure they are free of obstructions and are structurally sound If applicable inspect and clean air intak...

Страница 46: ...ional installer or equivalent service agency or gas supplier Cabinet Parts Outer access panel Blower access panel Top Cap Control Panel Parts Transformer Integrated control board Door interlock switch Blower Parts Blower wheel Motor Motor mounting frame Blower housing cutoff plate Heating Parts Flame Sensor Heat exchanger assembly Gas manifold Assembly Combustion air inducer Gas valve Burner assem...

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