Allied 80G1UHEX Series Installation Instructions Manual Download

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507651-01

Issue 1907

Page 1 of 32

INSTALLATION INSTRUCTIONS

A80UH1EX & 80G1UHEX

Warm Air Gas Furnace

Upflow / Horizontal Left and Right Air Discharge

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 installer (or

equivalent), service agency or the gas supplier.

WARNING

Manufactured By

Allied Air Enterprises LLC

A Lennox International, Inc. Company

215 Metropolitan Drive

West Columbia, SC 29170

(P) 507651-01

*P507651-01*

Table of Contents

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

A80UH1EX & 80G1UHEX Gas Furnace .....................

Shipping & Packing List ...............................................

Safety Information .......................................................

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

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

Setting Equipment .......................................................

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

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

Venting.......................................................................

Gas Piping

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

Electrical ....................................................................20

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

Heating Sequence of Operation ...............................26

Gas Pressure Adjustment ..........................................26

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

Blower Performance ..................................................29

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

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

Summary of Contents for 80G1UHEX Series

Page 1: ...n 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 Manufactured By Allied Air Enterprises LLC A Lennox International Inc Company 215 Metropolitan Drive West Columbia SC 29170 P 507651 01 P507651 01 Table of Contents Unit Dimensions...

Page 2: ...RNAL SIDE RETURN AIR FILTER KIT Either Side 1 NOTE C 20 units that require air volumes over 1800 cfm 850 L s must have one of the following 1 Return air from single side transition will accommodate 20 x 25 x1 in 508 x 635 x 25 cleanable air filter Required to maintain proper air velocity 2 Single side return air with optional RAB Return Air Base 3 Return air from bottom and one side 4 Return air f...

Page 3: ...can National Standards Institute Inc 11 West 42nd Street New York NY 10036 Clearances Adequate clearance must be made around the air openings into the vestibule area In order to ensure proper unit operation combustion and ventilation air supply must be provided according to the current National Fuel Gas Code Vent installations must be consistent with the venting tables in this instruction and appl...

Page 4: ...PREMATURE COMPONENT FAILURE AS A RESULT OF FAILURE 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 Installed in Combination with a Cooling Coil When this furnace is used with c...

Page 5: ...or combustion negative pressure outside pressure is greater than inside pressure will build to the point that a downdraft can occur in the furnace vent pipe or chimney As a result combustion gases enter the living space creating a potentially dangerous situation In the absence of local codes concerning air for combustion and ventilation use the guidelines and procedures in this section to install ...

Page 6: ...ned input rating of all appliances installed in that space This definition includes furnace closets or small equipment rooms When the furnace is installed so that supply ducts carry air circulated by the furnace to areas outside the space containing the furnace the return air must be handled by ducts which are sealed to the furnace casing and which terminate outside the space containing the furnac...

Page 7: ...th the equipment so that they are opened automatically during equipment operation Figure 3 Equipment in Confined Space All Air from Outside NOTE The inlet and outlet air openings shall each have a free area of at least one square inch per 4 000 Btu 645 mm per 1 17 kW per hour of the total input rating of all equipment in the enclosure Inlet Air from Crawlspace Outlet Air to Ventilated Attic Figure...

Page 8: ...olt and washer must be removed before the furnace is placed into operation After the bolt and washer have been removed the rigid leg will not touch the blower housing Figure 6 RIGID LEG remove shipping bolt and washer Units with 1 2 or 3 4 HP Blower Motor Upflow Applications Allow for clearances to combustible materials as indicated on the unit nameplate Minimum clearances for closet or alcove ins...

Page 9: ... Air Base Upflow Applications Only For use with A B C and D cabinets 1 Unit side return air Opening SIDE VIEW 3 1 4 83 1 23 584 Overall Maximum 584 23 3 4 19 1 22 7 16 570 Overall Maximum SIDE RETURN AIR OPENINGS Either Side 5 5 8 143 1 Minimum 11 279 2 Maximum 14 356 683 26 7 8 7 1 4 184 FRONT VIEW FURNACE FRONT AIR FLOW IF BASE IS USED WITHOUT IAQ CABINET A SINGLE RETURN AIR PLENUM MUST COVER BO...

Page 10: ...o suspend the unit in this way support must be provided for both the ends The straps must not interfere with the plenum or exhaust piping installation Cooling coils and supply and return air plenums must be supported separately NOTE When the furnace is installed on a platform in a crawlspace it must be elevated enough to avoid water damage and to allow the evaporator coil to drain Figure 12 Horizo...

Page 11: ...mum volume of exhausted air as well as the maximum volume of combustion air required for all gas appliances serviced by this space CAUTION Improper installation of the furnace can result in personal injury or death Combustion and flue products must never be allowed to enter the return air system or the living space Use screws and joint tape to seal the return air system to the furnace In platform ...

Page 12: ...inches 152 mm from the furnace vent outlet See Figure 16 Supply Air Plenum If the furnace is installed without a cooling coil a removable access panel must be installed in the supply air duct The access panel should be large enough to permit inspection either by smoke or reflected light of the heat exchanger for leaks after the furnace is installed The furnace access panel must always be in place ...

Page 13: ...ese instructions to properly size and install the venting system Once the venting system is installed attach the Disconnected Vent warning sticker to a visible area of the plenum near the vent pipe See Figure 16 The warning sticker is provided in the bag assembly Order kit 66W04 for additional stickers IMPORTANT Figure 15 Common Venting Using Metal Lined Masonry Chimney NOTE Refer to the provided ...

Page 14: ...sizing tables must be less than the low fire input rating and the maximum vent capacity must be greater than the high fire input rating 4 Single appliance vents If the vertical vent or tile lined chimney has a larger diameter or flow area than the vent connector use the vertical vent diameter to determine the minimum vent capacity and the vent connector diameter to determine the maximum vent capac...

Page 15: ...all be constructed of listed doublewall type B vent material or material having equivalent insulation qualities 14 All venting pipe passing through floors walls and ceilings must be installed with the listed clearance to combustible materials and be fire stopped according to local codes In absence of local codes refer to NFGC 2223 1 15 No portion of the venting system can extend into or pass throu...

Page 16: ... 15 136 20 226 22 339 5 22 65 30 130 39 219 49 330 10 29 59 40 121 51 206 64 315 15 35 53 48 112 61 195 75 301 20 0 0 97 0 202 0 349 0 540 2 10 75 14 149 18 250 20 377 5 21 71 29 143 38 242 47 367 10 28 64 38 133 50 229 62 351 15 34 58 46 124 59 217 73 337 20 48 52 55 116 69 206 84 322 30 0 0 100 0 213 0 374 0 587 2 9 81 13 166 14 283 18 432 5 21 77 28 160 36 275 45 421 10 27 70 37 150 48 262 59 4...

Page 17: ...92 52 146 69 220 15 1 21 50 33 89 47 142 64 220 2 22 53 35 96 49 153 66 235 3 24 55 36 102 51 163 68 248 20 1 21 54 33 99 46 157 62 246 2 22 57 34 105 48 167 64 259 3 23 60 35 110 50 176 66 271 30 1 20 62 31 113 45 181 60 288 2 21 64 33 118 47 190 62 299 3 22 66 34 123 48 198 64 309 Common Vent Capacity Type B Double Wall Vents with Type B Double Wall Connectors Serving Two or More Category I Appl...

Page 18: ... 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 CARBON MONOXIDE POISONING HAZARD Failure to follow the steps outlined below for each appliance connected to the venting system being placed into operation co...

Page 19: ... Figure 18 Gas valves can be damaged if subjected to pressures greater than 1 2 psig 3 48 kPa 14 inches w c IMPORTANT Figure 18 Table 6 Gas Pipe Capacity ft hr m hr Nominal Iron Pipe Size inches mm Internal Diameter inches mm Length of Pipe feet m 10 3 048 20 6 096 30 9 144 40 12 192 50 15 240 60 18 288 70 21 336 80 24 384 90 27 432 100 30 480 1 2 12 7 622 17 799 172 4 87 118 3 34 95 2 69 81 2 29 ...

Page 20: ...SCHARGE ESD Precautions and Procedures Electrostatic discharge can affect electronic components Take precautions to neutralize electrostatic charge by touching your hand and tools to metal prior to handling the control CAUTION The unit is equipped with a field make up box on the left hand side of the cabinet The make up box may be moved to the right side of the furnace to facilitate installation I...

Page 21: ...l it is necessary to use an external relay One line voltage HUM 1 4 spade terminal is provided on the furnace integrated control See Figure 24 for integrated control configuration This terminal is energized in the heating mode when the combustion air inducer is operating Any humidifier rated up to one amp can be connected to this terminal with the neutral leg of the circuit being connected to one ...

Page 22: ...507651 01 Page 22 of 32 Issue 1907 Figure 22 Wiring Diagram 040 Models ...

Page 23: ...507651 01 Issue 1907 Page 23 of 32 Figure 23 Wiring Diagram 060 080 100 Models ...

Page 24: ...combustion air inducer 12 flashes Flame sensed without gas valve energized 13 flashes 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 LED flashes X times at second on second off remains off for 3 seconds then repeats Last 10 error codes are stored in memory including when power is shut off to the unit To reca...

Page 25: ...its with an automatic ignition system If you do not follow these instructions exactly a fire or explosion may result causing property damage personal injury or death WARNING Gas Valve Operation See Figure 25 1 STOP Read the safety information at the beginning of this section 2 Set the thermostat to the lowest setting 3 Turn off all electrical power to the unit 4 This furnace is equipped with an ig...

Page 26: ... surface ignitor energizes 4 After a 20 second ignitor warm up period the gas valve solenoid opens A 4 second trial for ignition period begins 5 Gas is ignited flame sensor proves the flame and the combustion process continues Gas Pressure Adjustment Gas Flow Approximate Table 8 Gas Meter Clocking Chart Model Seconds for One Revolution Natural Gas 1 cu ft Dial 2 cu ft Dial 040 90 180 060 60 120 08...

Page 27: ...re 2 Start unit and allow 5 minutes for unit to reach steady state 3 After allowing unit to stabilize for 5 minutes record manifold pressure and compare to value given in Table 9 4 Shut unit off and remove manometer as soon as an accurate reading has been obtained Take care to remove barbed fitting and replace threaded plug 5 Start unit and perform leak check Seal leaks if found For safety connect...

Page 28: ...emperatures See Figure 26 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 HEAT FAN OFF TIME IN SECONDS To adjus...

Page 29: ...10 243 1190 141 1030 86 930 73 835 55 0 10 1380 251 1165 150 990 95 890 89 790 65 0 20 1360 264 1115 158 950 99 840 78 730 68 0 30 1315 278 1090 171 910 110 790 89 660 61 0 40 1295 290 1070 182 865 122 740 93 600 71 0 50 1270 300 1025 191 825 127 695 103 545 75 0 60 1235 300 1000 197 785 136 650 108 495 84 0 70 1215 317 975 208 750 147 615 118 450 88 0 80 1185 331 920 216 700 153 555 121 390 96 Bl...

Page 30: ...0 415 1710 275 1575 220 1425 160 2235 595 1945 382 1725 262 1590 202 1430 165 0 10 2175 639 1910 427 1685 287 1545 234 1400 176 2205 611 1915 397 1695 280 1550 218 1400 193 0 20 2145 658 1885 449 1635 309 1490 246 1325 181 2165 629 1885 424 1660 293 1510 235 1335 175 0 30 2100 681 1845 466 1605 327 1465 259 1275 196 2135 652 1850 441 1615 312 1475 247 1275 182 0 40 2095 700 1815 481 1565 337 1415 ...

Page 31: ...grilles and louvers on the unit and in the room where the furnace is installed must be properly sized open and unobstructed to provide combustion air 8 Inspect the furnace venting system to make sure it is in place structurally sound and without holes corrosion or blockage Vent system must be free and clear of obstructions and must slope upward away from the furnace Vent system should be installed...

Page 32: ...taller or equivalent service agency or gas supplier Cabinet Parts Upper access panel Blower panel Top cap Control Panel Parts Transformer Integrated control Door interlock switch Circuit breaker Blower Parts Blower wheel Blower housing Motor Motor mounting frame Motor power choke Blower housing cutoff plate Heating Parts Flame sensor Heat exchanger assembly Gas manifold Combustion air inducer Gas ...

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