Allied 95G1UHE Installation Instructions Manual Download Page 42

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507276-03

Page 42 of 59

Issue 1621

Electrical

ELECTROSTATIC DISCHARGE (ESD)

Precautions and Procedures

The unit is equipped with a field makeup box. The makeup

box may be moved to the right side of the furnace to facilitate

installation. Seal unused openings on left side with plugs

removed from right side. Secure the excess wire to the

existing harness to protect it from damage.

Refer to Figure 64 for field wiring and Figure 65 for schematic

wiring diagram and troubleshooting.

The power supply wiring must meet Class I restrictions.

Protected by either a fuse or circuit breaker, select circuit

protection and wire size according to unit nameplate.

NOTE:

Unit nameplate states maximum current draw.

Maximum Over-Current Protection allowed is 15 AMP.

Holes are on both sides of the furnace cabinet to facilitate

wiring.

Install a separate (properly 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 wiring diagram

shown in Figure 64. Use 18 gauge wire or larger that is

suitable for Class II rating for thermostat connections.

Electrically ground the unit according to local codes or,

in the absence of local codes, according to the current

National Electric Code (ANSI/HFPA No. 70) for the USA

and current Canadian Electric Code Part 1 (CSA standard

C22.1) for Canada. A green ground wire is provided in the

field makeup box.

NOTE:

The gas furnace contains electronic components

that are polarity sensitive. Make sure that the furnace is

wired correctly and is properly grounded.

Accessory Terminals

One line voltage “EAC” 1/4” spade terminal is provided on

the furnace control board. Any accessory rated up to one

amp can be connected to this terminal with the neutral leg

of the circuit being connected to one of the provided neutral

terminals. If an accessory rated at greater than one amp is

connected to this terminal, it is necessary to use an external

relay. See Figure 66 for control board configuration. This

terminal is energized when the indoor blower is operating.

One line voltage “HUM” 1/4” spade terminal is provided on

the furnace control board. Any humidifier rated up to one

amp can be connected to this terminal with the neutral leg

of the circuit being connected to one of the provided neutral

Figure 61

Figure 62

Electrostatic discharge can affect electronic components.

Take precautions during furnace installation and service

to protect the furnace’s electronic controls. Precautions

will help to avoid control exposure to electrostatic

discharge by putting the furnace, the control and the

technician at the same electrostatic potential. Neutralize

electrostatic charge by touching hand and all tools on

an unpainted unit surface, such as the gas valve or

blower deck, before performing any service procedure.

CAUTION

Summary of Contents for 95G1UHE

Page 1: ...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 installer or equivalent service agency or the gas supplier WARNING P507276 03 Unit Dimensions 2 Parts Arrangement 3 Gas Furnace 4 Shipping and Packing List 4 Safety Information 4 Use of Furnace as a Constr...

Page 2: ...ional RAB Return Air Base 3 Bottom return air 4 Return air from both sides 5 Bottom and one side return air See Blower Performance Tables for additional information 2 Optional External Side Return Air Filter kit is not for use with optional Return Air Base Consider sizing requirements for optional IAQ equipment before cutting side return opening FRONT VIEW SIDE VIEW Model A95UH1E 95G1UHE A B C D i...

Page 3: ...507276 03 Page 3 of 59 Issue 1621 EXPANDED VIEW Figure 1 ...

Page 4: ...ipment for shipping damage If you find any damage immediately contact the last carrier Please refer to specification sheets for available accessories Safety Information Use only the type of gas approved for use with this furnace Refer to unit nameplate A95UH1E 95G1UHE units are CSA International certified to ANSI Z21 47 and CSA 2 3 standards Building Codes In the USA installation of gas furnaces m...

Page 5: ...ent chilled air from entering the furnace If the damper is manually operated it must be equipped to prevent operation of either the heating or the cooling unit unless it is in the full HEAT or COOL setting When installed this furnace must be electrically grounded according to local codes In addition in the United States installation must conform with the current National Electric Code ANSI NFPA No...

Page 6: ...by a licensed plumber or fitter only The gas cock must be T handle type When a furnace is installed in an attic the passageway to and service area surrounding the equipment shall be floored Combustion Dilution Ventilation Air If this unit is installed as a Non Direct Vent Furnace follow the guidelines in this section NOTE In Non Direct Vent Installations combustion air is taken from indoors and fl...

Page 7: ...tion if the structure does not provide enough air by infiltration If the furnace is located in a building of tight construction with weather stripping and caulking around the windows and doors follow the procedures in the Air from Outside section one 90o elbow The minimum length certified for use with this furnace is 5 and one elbow not including the vent and air intake terminals infiltration If t...

Page 8: ...ll be no less than 3 inches 75 mm In calculating free area the blocking effect of louvers grilles or screens must be considered If the design and free area of protective covering is not known for calculating the size opening required it may be assumed that wood louvers will have 20 to 25 percent free area and metal louvers and grilles will have 60 to 75 percent free area Louvers and grilles must b...

Page 9: ...supply connections electrical supply vent connection condensate trap and drain connections and installation and service clearances 24 inches 610 mm at unit front The unit must be level from side to side Tilt the unit slightly maximum 1 2 in from level from back to front to aid in the draining of the heat exchanger See Figure 12 Allow for clearances to combustible materials as indicated on the unit...

Page 10: ...76 03 Page 10 of 59 Issue 1621 Figure 12 Setting Equipment Tilt the unit slightly Max 1 2 from back to front to aid in the draining of the heat exchanger Unit must be level side to side in all applications ...

Page 11: ...n result in personal injury or death Combustion and flue products must never be allowed to enter the return air system or air in the living space Use sheet metal screws and joint tape to seal return air system to furnace In platform installations with furnace return the furnace should be sealed airtight to the return air plenum A door must never be used as a portion of the return air duct system T...

Page 12: ...t the bottom cap down to release the bottom panel Once the bottom panel has been removed reinstall the bottom cap See Figure 16 Horizontal Applications Figure 17 Removing the Bottom Panel Figure 16 Optional Return Air Base Upflow Applications Only Figure 15 WARNING Do not install the furnace on its front or its back See Figure 17 ...

Page 13: ...sate line into a condensate pump to meet drain line slope requirements The pump must be rated for use with condensing furnaces Protect the condensate discharge line from the pump to the outside to avoid freezing 6 Continue with exhaust condensate and intake piping installation according to instructions Typical Horizontal Application Figure 19 This furnace can be installed in horizontal application...

Page 14: ... where this furnace or any other gas fueled appliance i e water heater or carbon monoxide producing device i e wood fireplace is installed When return air is drawn from a room a negative pressure is created in the room If a gas appliance is operating in a room with negative pressure the flue products can be pulled back down the vent pipe and into the room This reverse flow of the flue gas may resu...

Page 15: ...s of ignition Do not use excessive amounts of solvent cement when making joints Good ventilation should be maintained to reduce fire hazard and to minimize breathing of solvent vapors Avoid contact of cement with skin and eyes CAUTION A95UH1E 95G1UHE exhaust and intake connections are made of PVC Use PVC primer and solvent cement when using PVC vent pipe When usingABS vent pipe use transitional so...

Page 16: ...ue may ignite during system check Allow fumes to dissipate for at least 5 minutes before placing unit into operation DANGER Table 3 OUTDOOR TERMINATION KITS USAGE A96UH2E 95G1UHE 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 x12 2 x12 51W11 71M80 OR ...

Page 17: ...hile each appliance is operating and the other appliances which are not operating remain connected to the common venting system If the venting system has been installed improperly you must correct the system as indicated in the general venting requirements section 1 Seal any unused openings in the common venting system 2 Inspect the venting system for proper size and horizontal pitch Determine tha...

Page 18: ...mmon vent system WATER HEATER OPENINGS To Adjacent Room If this gas furnace replaces a furnace which was commonly vented with another gas appliance the size of the existing vent pipe for that gas appliance must be checked Without the heat of the original furnace flue products the existing vent pipe is probably oversized for the single water heater or other appliance The vent should be checked for ...

Page 19: ...ed before the pipe is transitioned to any size larger than 2 This elbow must be added to the elbow count used to determine acceptable vent lengths Contact the Application Department for more information concerning sizing of vent systems which include multiple pipe sizes Figure 23 Figure 24 Do not use screens or perforated metal in exhaust or intake terminations Doing so will cause freeze ups and m...

Page 20: ...6 41 19 90 75 43 18 112 112 93 93 89 6 51 36 14 85 70 38 13 107 107 88 88 84 7 46 31 9 80 65 33 8 102 102 83 83 79 8 41 26 n a 75 60 28 n a 97 97 78 78 74 9 36 21 70 55 23 92 92 73 73 69 10 31 16 65 50 18 87 87 68 68 64 Maximum Allowable Intake or Exhaust Vent Length in Feet Table 5 Concentric Termination at Elevation 0 4 500 ft Number Of 90 Elbows Used 2 Pipe 2 1 2 Pipe 3 Pipe Model Model Model 0...

Page 21: ...93 93 89 2 61 46 24 4 90 90 68 33 108 107 88 88 84 3 56 41 19 n a 85 85 63 28 103 102 83 83 79 4 51 36 14 80 80 58 23 98 97 78 78 74 5 46 31 9 85 75 53 18 93 92 73 73 69 6 41 26 4 70 70 48 13 88 87 68 68 64 7 36 21 n a 65 65 43 8 83 82 63 63 59 8 31 16 60 60 38 3 78 77 58 58 54 9 26 11 55 55 33 n a 73 72 53 53 49 10 21 6 50 50 28 68 67 48 48 44 Standard Termination Elevation 4 500 10 000 ft Number...

Page 22: ...507276 03 Page 22 of 59 Issue 1621 Figure 25 Figure 26 ...

Page 23: ...urnace from the surrounding space the indoor air quality must be considered and guidelines listed in Combustion Dilution and Ventilation Air section must be followed Follow the next two steps when installing the unit in Direct Vent applications where combustion air is taken from outdoors and flue gases are discharged outdoors The provided air intake screen must not be used in direct vent applicati...

Page 24: ...a ventilated attic Figure 31 or ventilated crawlspace Figure 32 the exhaust vent length must not exceed those listed in Table 6 If 3 diameter pipe is used reduce to 2 diameter pipe at the termination point to accommondate the debris screen 3 Use a sheet metal screw to secure the intake pipe to the connector if desired 1 Use transition solvent cement or a sheet metal screw to secure the intake pipe...

Page 25: ...rrent CSA B149 Natural Gas and Propane Installation Codes in Canada for details Position termination according to location given in Figure 33or 34 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 d...

Page 26: ...Installations Only In accordance to CSA International B149 installation codes the minimum allowed distance between the combustion air intake inlet and the exhaust outlet of other appliances shall not be less than 12 inches 305 mm IMPORTANT Table 7 Maximum Allowable Exhaust Vent Pipe Length in ft Without Insulation In Unconditioned Space For Winter Design Temperatures Single Stage High Efficiency F...

Page 27: ...echanical air supply inlet to building or the com bustion air inlet to any other ap pliance Clearance to mechanical air sup ply inlet Clearance 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 4 5m above the meter regulator assembly 3 feet 9m 6 inch...

Page 28: ...507276 03 Page 28 of 59 Issue 1621 Figure 34 ...

Page 29: ...nations 1 Intake and exhaust terminations are not required to be in the same pressure zone You may exit the intake on one side of the structure and the exhaust on another side Figure 36 You may exit the exhaust out the roof and the intake out the side of the structure Figure 37 2 Intake and exhaust pipes should be placed as close together as possible at termination end refer to illustrations Maxim...

Page 30: ...tal separation between intake and exhaust C Minimum from end of exhaust to inlet of intake D Maximum exhaust pipe length E Maximum wall support distance from top of each pipe intake exhaust 12 508 mm 12 508 mm 6 152 mm 6 152 mm 8 203 mm 8 203 mm 12 305 mm 20 508 mm 6 152 mm 6 152 mm NOTE FIELD PROVIDED REDUCER MAY BE REQUIRED TO ADAPT LARGER VENT PIPE SIZE TO TERMINATION D B C SIZE TERMINATION PER...

Page 31: ...n exhaust termination tee The accelerator is not required 2 As required Flue gas may be acidic and may adversely affect some building materials If a side wall vent termination is used and flue gases will impinge on the building materials a corrosion resistant shield 24 inches square should be used to protect the wall surface If optional tee is used the protective shield is recom mended The shield ...

Page 32: ...tiple furnace installation may use a group of up to four terminations assembled together horizontally as shown in Figure 44 Figure 41 Figure 40 See venting Table 5 for maximum venting lengths with this arrangement Use wall support every 24 610 mm Use two wall supports if extension is greater than 24 610 mm but less than 48 1219 mm NOTE One wall support must be 6 152 mm from top of each pipe intake...

Page 33: ...3 76 mm PVC beyond the outside wall See Figure 47 Figure 43 Figure 44 Figure 42 Figure 45 Direct Vent Application Using Existing Chimney NOTE Do not discharge exhaust gases directly into any chimney or vent stack If ver tical 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 terminate as illus trated I...

Page 34: ...ports if extension is greater than 24 but less than 48 12 305mm MAX for 2 51mm 20 508mm MAX for 3 76mm 6 152mm Max Non Direct Vent Field Supplied Wall Termination Extended Figure 49 NOTE Do not discharge exhaust gases directly into any chimney or vent stack If ver tical discharge through an existing unused chimney or stack is required insert piping inside chimney until the pipe open end is above t...

Page 35: ...t be 1 1 4 o d X 1 i d and should be attached to the drain on the trap using a hose clamp Condensate Piping This unit is designed for either right or left side exit of condensate piping in upflow applications In horizontal applications the condensate trap must extend below the unit An 8 service clearance is required for the condensate trap Refer to Figure 50 for condensate trap locations Figure 57...

Page 36: ...24 ft 7 3 m kit no 26K69 and 50 ft 15 2 m kit no 26K70 Figure 52 Unit with Cooling Coil Figure 53 Condensate Trap Locations Piping from furnace must slope down a minimum of 1 4 per ft toward trap Figure 51 Condensate Trap Locations Unit shown in upflow position with remote trap Piping from furnace must slope down a minimum of 1 4 per ft toward trap A separate drain line must be run to the drain fr...

Page 37: ... from furnace and evaporator coil must slope down a minimum 1 4 per ft toward trap Condensate Trap with Optional Overflow Switch Figure 54 When combining the furnace and evaporator coil drains together the A C condensate drain outlet must be vented to relieve pressure in order for the furnace pressure switch to operate properly WARNING ...

Page 38: ...507276 03 Page 38 of 59 Issue 1621 Figure 57 Trap Drain Assembly Using 1 2 PVC or 3 4 PVC ...

Page 39: ...fully check all piping connections factory and field installed for gas leaks Use a leak detecting solution or other preferred means Never use an open flame to test for gas leaks Check all connections using a commercially available soap solution made specifically for leak detection The furnace must be isolated from the gas supply system by closing its individual manual shut off valve during any pre...

Page 40: ...507276 03 Page 40 of 59 Issue 1621 Figure 59 Figure 60 ...

Page 41: ...30 15 01 490 13 87 460 13 03 430 12 18 400 11 33 1 1 2 38 1 1 610 40 894 2100 59 46 1460 41 34 1180 33 41 990 28 03 900 25 48 810 22 94 750 21 24 690 19 54 650 18 41 620 17 56 2 50 8 2 067 52 502 3950 111 85 2750 77 87 2200 62 30 1900 53 80 1680 47 57 1520 43 04 1400 39 64 1300 36 81 1220 34 55 1150 32 56 2 1 2 63 5 2 469 67 713 6300 178 39 4350 123 17 3520 99 67 3000 84 95 2650 75 04 2400 67 96 2...

Page 42: ...he absence of local codes according to the current National Electric Code ANSI HFPA No 70 for the USA and current Canadian Electric Code Part 1 CSA standard C22 1 for Canada A green ground wire is provided in the field makeup box NOTE The gas furnace contains electronic components that are polarity sensitive Make sure that the furnace is wired correctly and is properly grounded Accessory Terminals...

Page 43: ... 57 Hz to 63 Hz The furnace integrated control requires both proper polarity and proper ground Both polarity and proper grounding should be checked before attempting to operate the furnace on either permanent or temporary power Generator should have a wave form distortion of less than 5 THD total harmonic distortion terminals If a humidifier rated at greater than one amp is connected to this termi...

Page 44: ...507276 03 Page 44 of 59 Issue 1621 TYPICAL WIRING DIAGRAM Figure 65 ...

Page 45: ...omatically light The ignitor does not get hot when there is no call for heat on these units INTEGRATED CONTROL Automatic Hot Surface Ignition System Figure 66 Do not use this furnace if any part has been underwater A flood damaged furnace is extremely dangerous Attempts to use the furnace can result in fire or explosion Immediately call a qualified service technician to inspect the furnace and to ...

Page 46: ...from gas line 12 If 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 upper access panel 4 Move gas valve switch to OFF 5 Replace the upper access panel Failure To Oper...

Page 47: ...barbed fitting and replace threaded plug Proper Combustion Furnace should operate minimum 15 minutes with correct manifold pressure and gas flow rate before checking combustion Take combustion sample beyond the flue outlet and compare to the tables below High Altitude Information NOTE In Canada certification for installations at elevations over 4500 feet 1371 m is the jurisdiction of local authori...

Page 48: ...adjustment necessary All models use the factory installed pressure switch from 0 4500 feet 0 1371 m Burner Orifice Conversion Kits at Varying Altitudes Unit Size 0 7 500 ft 0 2 286m 7 501 10 000 ft 2 286 3 048 m Natural to LP Propane LP Propane to Natural High Altitude Natural Burner Orifice Kit High Altitude LP Propane Burner Orifice Kit 045 11K50 73W80 51W01 11K45 070 090 110 135 030 14U96 N A N...

Page 49: ...ose fireplace dampers 5 Turn on clothes dryers and any 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 fl...

Page 50: ...See Figure 68 Constant Torque Motor These units are equipped with a constant torque ECM motor It has a DC motor coupled to an electronic control module both contained in the same motor housing The motor is programmed to provide constant torque at each of the five selectable speeds The motor has five speed taps Each tap requires 24 volts to energize Thermostat Heat Anticipation Set the heat anticip...

Page 51: ...507276 03 Page 51 of 59 Issue 1621 Blower Data A95UH1E 95G1UHE NOTES All air is measured external to unit without filter filter not furnished field provided ...

Page 52: ...wer Speeds High Medium High Medium Medium Low Low cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts 0 00 1025 122 935 97 855 76 820 76 765 69 0 10 985 129 910 104 820 82 775 72 700 63 0 20 955 139 875 114 770 87 640 62 575 52 0 30 915 145 830 120 730 96 575 67 375 40 0 40 875 155 790 130 680 101 530 74 330 47 0 50 830 161 750 136 635 110 470 79 260 51 0 60 800 172 700 146 580 115 420 82 210 47 0 7...

Page 53: ...y line connected to gas valve 5 Remove sensor wire from flame sensor Disconnect 2 pin plug from the ignitor 6 Disconnect wires from flame rollout switches 7 Remove four burner assembly screws at the vestibule panel and remove gas valve manifold and burner box as a single unit 8 If necessary clean burners at this time Follow procedures outlined in Burner Cleaning section 9 Remove the clean out cap ...

Page 54: ... condensate trap 36 Reinstall electrical junction box 37 Reinstall the combustion air inducer and flexible no hub connector Reconnect the 2 pin plug to the wire harness 38 Reconnect drain tubes between flue collar and cold end header box 39 Secure burner assembly to vestibule panel using four existing screws Burners are self aligning to center of clam shells 40 Reconnect gas supply line to gas val...

Page 55: ...l between the return air and the room where the furnace is installed Return air duct Must be properly attached and provide an air seal to the unit Operating performance Unit must be observed during operation to monitor proper performance of the unit and the vent system Combustion gases Flue products should be analyzed and compared to the unit specifications Problems detected during the inspection ...

Page 56: ...quivalent service agency or gas supplier Cabinet Parts Upper 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 Motor Capacitor Blower Housing Cutoff Plate Heating Parts Flame Sensor Heat Exchanger Assembly Gas Manifold Combustion Air Inducer Gas Valve Main Burner Cluster Main ...

Page 57: ...507276 03 Page 57 of 59 Issue 1621 Start Up Performance Check List ...

Page 58: ...IC 5 Supply External Static _______ Return External Static ______ Total External Static _______ CONDENSATE LINE 6 Leak Free VENT PIPE 7 Leak Free COOLING MODE INDOOR BLOWER AMPS______ 3 TEMPERATURE DROP Return Duct Temperature _________ Supply Duct Temperature _ _______ Temperature Drop _________ 4 DRAIN LINE 8 Leak Free THERMOSTAT Adjusted and Programmed Explained Operation to Owner 9 SUPPLY AIR ...

Page 59: ... minimum height of eight 8 feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment The sign shall read in print size no less than one half 1 2 inch in size GAS VENT DIRECTLY BELOW KEEP CLEAR OF ALL OBSTRUCTIONS 4 INSPECTION The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall ...

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