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507276-03

Page 50 of 59

Issue 1621

Other Unit Adjustments

Primary Limit

The primary limit is located on the heating compartment

vestibule panel. This limit is factory set and requires no

adjustment.

Flame Rollout Switches (Two)

These manually reset switches are located on the front of

the burner box. These limits are factory set and require no

adjustment.

Pressure Switch

The pressure switch is located in the heating compartment

on the cold end header box. This switch checks for proper

combustion air inducer operation before allowing ignition

trial. The switch is factory set and must not be adjusted.

Temperature Rise

After the furnace has been started and supply and return

air temperatures have been allowed to stabilize, check the

temperature rise. If necessary, adjust the blower speed to

maintain the temperature rise within the range shown on

the unit nameplate. Increase the blower speed to decrease

the temperature. Decrease the blower speed to increase

the temperature rise. Failure to adjust the temperature rise

may cause erratic limit operation.

Fan Control

The fan ON time of 30 seconds is not adjustable. The fan

OFF delay (amount of time that the blower operates after

the heat demand has been satisfied) may be adjusted by

changing the jumper position across the five pins on the

integrated control. The unit is shipped with a factory heat

fan OFF setting of 90 seconds. The fan OFF delay affects

comfort and is adjustable to satisfy individual applications.

Adjust the fan OFF delay to achieve a supply air temperature

between 90° and 110° F at the moment that the blower is de-

energized. Longer OFF delay settings provide lower return

air temperatures; shorter settings provide higher return air

temperatures. 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 anticipator setting (if adjustable) according to

the amp draw listed on the wiring diagram that is attached

to the unit.

Electrical

1. Check all wiring for loose connections.

2. Check for the correct voltage at the furnace (with furnace

operating).

Correct voltage is 120 VAC ± 10%

3. Check amp–draw on the blower motor with the blower

access panel in place.

Motor Nameplate__________Actual__________

Blower Speeds

Follow the steps below to change the blower speeds.

1. Turn off electrical power to furnace.

2. Remove blower access panel.

3. Disconnect existing speed tap at control board speed

terminal.

NOTE:

Termination of any unused motor leads must be

insulated.

4. Place unused blower speed tap on integrated control

“PARK” terminal or insulate.

5. Refer to blower speed selection chart on unit wiring

diagram for desired heating or cooling speed. See

Blower performance data beginning on the next page.

6. Connect selected speed tap at control board speed

terminal.

7. Re-secure blower access panel.

8. Turn on electrical power to furnace.

9. Recheck temperature rise.

Electronic Ignition

The integrated control has an added feature of an internal

Watchguard control. The feature serves as an automatic

reset device for integrated control lockout caused by ignition

failure. This type of lockout is usually due to low gas line

pressure. After one hour of continuous thermostat demand

for heat, the Watchguard will break and remake thermostat

demand to the furnace and automatically reset the integrated

control to begin the ignition sequence.

Figure 68

Содержание 95G1UHE

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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 ...

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

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

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

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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...

Страница 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 ...

Страница 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...

Страница 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 ...

Страница 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 ...

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

Страница 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 ...

Страница 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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