Allied Air Enterprises A80UH2V manual

506471-01 Page 1 of 41 Issue 1034 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. Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life. Installation and serv[...]

506471-01 Page 2 of 41 Issue 1034 Model A 368 14-1/2 A801UH2V/80G1UH2V B C in. mm in. mm in. mm 340 13-3/8 330 13 090-12 135-20 533 21 504 19-7/8 495 19-1/2 622 24-1/2 546 23-3/8 584 23 D in. mm 248 9-3/4 203 8 121 4-3/4 090-16 110-20 070-12 446 17-1/2 416 16-3/8 406 16 159 6-1/4 090-20 A80UH2V & 80G1UH2V Unit Dimensions - inches (mm) 1 NOTE - [...]

506471-01 Page 3 of 41 Issue 1034 EXPLODED VIEW CONTROL BOX BLOWER ASSEMBL Y ACCESS P ANEL BURNER BOX ROLLOUT SWITCH GAS V AL VE COMBUSTION AIR INDUCER PRESSURE SWITCH COMBUSTION AIR INDUCER HEA T EXCHANGER CABINET Figure 1[...]

506471-01 Page 4 of 41 Issue 1034 A80UH2V & 80G1UH2V Gas Furnace The A80UH2V & 80G1UH2V gas furnace is shipped with ready for installation in the upflow or horizont al position (left or right). for horizontal lef t position the combustion air pressure switch must be moved). The furnace is shipped with the bottom panel in place. The bottom p[...]

506471-01 Page 5 of 41 Issue 1034 T emperature Rise NOTE: Furnace must be adjusted to obt ain a temperature rise within the range specified on the unit nameplate. Failure to do so may cause erratic limit operation and may result in premature heat exchanger failure. This furnace must be installed so that it s electrical components are protected from[...]

506471-01 Page 6 of 41 Issue 1034 General These instructions are intended as a general guide and do not supersede local codes in any way . Consult authorities having jurisdiction before installation. In addition to the requirements outlined previously , the following general recommendations must be considered when installing one of these furnaces: [...]

506471-01 Page 7 of 41 Issue 1034 All gas fired appliances require air for the combustion process. If sufficient combustion air is not available, the furnace or other appliances will operate inefficiently and unsafely . Enough air must be provided to meet the needs of all fuel burning appliances and appliances such as exhaust fans which force air o[...]

506471-01 Page 8 of 41 Issue 1034 When ducts are used, they shall be of the same cross sectional area as the free area of the openings to which they connect. The minimum dimension of rect angular air ducts shall 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[...]

506471-01 Page 9 of 41 Issue 1034 The gas furnace can be installed as shipped in either the upflow position or the horizont al position. Select a location that allows for the required clearances that are listed on the unit nameplate. Also consider gas supply connections, electrical supply , vent connection, and installation and service clearances [[...]

506471-01 Page 10 of 41 Issue 1034 Return Air - Upflow Applications Return air can be brought in through the bottom or either side of the furnace installed in an upflow application. If the furnace is installed on a platform with bottom return, make an airtight seal between the bottom of the furnace and the platform to ensure that the furnace operat[...]

506471-01 Page 11 of 41 Issue 1034 Removing the Bottom Panel Remove the two screws that secure the bottom cap to the furnace. Pivot the bottom cap down to release the bottom panel. Once the bottom p anel has been removed, reinstall the bottom cap. See Figure 1 1. Horizontal Applications The furnace can be installed in horizont al applications. Orde[...]

506471-01 Page 12 of 41 Issue 1034 Filters This unit is not equipped with a filter or rack. A field provided high velocity filter is required for the unit to operate properly . T able 1 lists recommended filter sizes. A filter must be in place any time the unit is operating. Duct System Use industry approved standards (such as those published by Ai[...]

506471-01 Page 13 of 41 Issue 1034 V enting A 4 inch diameter flue transition is factory installed on the combustion air inducer outlet of all models. Figure 16 shows the combustion air inducer as shipped from the factory . The unit will not vent properly with the flue transition pointed down in the 6 o’clock position. The combustion air inducer [...]

506471-01 Page 14 of 41 Issue 1034 Horizontal Position HORIZONT AL LEFT POSITION T op V ent discharge Figure 19 • Disconnect pressure switch hose from barbed fitting on the pressure switch assembly . Remove pressure switch assembly (1 screw) and cut wire tie to free pressure switch wires. Reinstall pressure switch on the other side of orifice pla[...]

506471-01 Page 15 of 41 Issue 1034 Once the venting system is installed, attach the “Disconnected V ent” warning sticker to a visible area of the plenum near the vent pipe. See Figure 23. The warning sticker is provided in the bag assembly . Order kit 66W04 for additional stickers. IMPORT ANT These series units are classified as fan assisted Ca[...]

506471-01 Page 16 of 41 Issue 1034 DO NOT insulate the space between the liner and the chimney wall with puffed mica or any other loose granular insulating material. SINGLE appliance venting of a fan assisted furnace into a tile lined masonry chimney (interior or outside wall) is prohibited. The chimney must first be lined with either type B1 vent [...]

506471-01 Page 17 of 41 Issue 1034 6. The entire length of single wall metal vent connector shall be readily accessible for inspection, cleaning, and replacement. 7. Single appliance venting configurations with zero lateral lengths (T ables 3 and 4) are assumed to have no elbows in the vent system. For all other vent configurations, the vent system[...]

506471-01 Page 18 of 41 Issue 1034 Cap acity of T ype B Double W all V ents with T ype B Double Wall Connectors Serving a Single Category I Appliance T able 3 NOTE: Single appliance venting configureations with zero lateral lengths are assumed to have no elbows in the vent system. For all other vent configurations, the vent system is assumed to hav[...]

506471-01 Page 19 of 41 Issue 1034 Capacity of T ype B Double Wall V ents with Single Wall Metal Connectors Serving a Single Category I Appliance T able 4 NOTE: Single appliance venting configureations with zero lateral lengths are assumed to have no elbows in the vent system. For all other vent configurations, the vent system is assumed to have tw[...]

506471-01 Page 20 of 41 Issue 1034 V ent Connector Capacity T ype B Double Wall V ents with Type B Double W all Connectors Serving Two or More Category I Appliances Common V ent Capacity T ype B Double Wall V ents with Type B Double W all Connectors Serving Two or More Category I Appliances T able 5 T able 6[...]

506471-01 Page 21 of 41 Issue 1034 V ent Connector Capacity T ype B Double Wall V ents with Single Wall Metal Connectors Serving T wo or More Category I Appliances T able 7 Common V ent Capacity T ype B Double W all V ent s with Single Wall Met al Connectors Serving T wo or more Category I Appliances T able 8 NOTE: Single appliance venting configur[...]

506471-01 Page 22 of 41 Issue 1034 Removal of the Furnace from Common V ent 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. Conduct the following test while each appliance is operating an[...]

506471-01 Page 23 of 41 Issue 1034 Gas Supply 1 . This unit is shipped standard for left or right side installation of gas piping (or top entry in horizont al applica-tions). Connect the gas supply to the piping assembly . 2. When connecting the gas supply piping, consider factors such as length of run, number of fittings, and furnace rating to avo[...]

506471-01 Page 24 of 41 Issue 1034 NOTE: BLACK IRON PIPE ONL Y TO BE ROUTED INSIDE OF CABINET Figure 26 Horizontal Applications Possible Gas Piping Configurations NOTE: BLACK IRON PIPE ONL Y TO BE ROUTED INSIDE OF CABINET Figure 27[...]

506471-01 Page 25 of 41 Issue 1034 Leak Check After gas piping is completed, carefully check all piping connections (factory and field installed) for gas leaks. Use a leak detecting solution or other preferred means. NOTE: If emergency shutoff is necessary , shut off the main manual gas valve and disconnect the main power to the furnace. The instal[...]

506471-01 Page 26 of 41 Issue 1034 4. Before connecting the thermost at, 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. 5. Complete the wiring connections to the equipment. Use the provided unit wiring diagram and the f[...]

506471-01 Page 27 of 41 Issue 1034 In all instances, other than wiring for the thermostat, the wiring to be done and any replacement of wire shall conform with the temperature limitation for T ype T wire –63°F (35°C) rise. Connect a suf ficiently sized wire with ground to the furnace’s line voltage connections and ground lug. Refer to the fur[...]

506471-01 Page 28 of 41 Issue 1034 Active Dehumidification T o achieve additional dehumidification, clip the jumper wire located below the DEHUM terminal on the integrated ignition/ blower control board and connect a humidity control that opens on humidity rise to the DEHUM and R terminals. The DEHUM terminal on the control board must be connected [...]

506471-01 Page 29 of 41 Issue 1034 ADJUSTING AIRFLOW T able 1 1[...]

506471-01 Page 30 of 41 Issue 1034 ST ART -UP Lighting Instructions For Y our Safety , Read Before Operating These furnaces are equipped with an ignition device which automatically lights the burners. Do not try to light the burners by hand. Before operating, smell all around the appliance area for gas. Be sure to smell next to the floor because so[...]

506471-01 Page 31 of 41 Issue 1034 Sequence of Operation (see Figures 33 – 3 7 ) Heating On a call for heat from the room thermostat, the control board performs a 1 second self check. Upon confirmation that the pressure switch contact s are in an open position, the control energizes the combustion blower on high speed. The control then checks for[...]

506471-01 Page 32 of 41 Issue 1034 Figure 35 Call for Fan G g 50% CALL OFF G - F an Switch ON - F an Switch OFF g Figure 36 Single St age Cooling 7.5 minutes Y y 82% 100% 82% 1 min CALL OFF Y - Cool Demand Present - Cool Demand Satisfied y Figure 37 T wo St age Cooling Y1 y1 57% 100% CALL OFF 7.5 minutes 70% Y1 - 1 Stage Cool Demand Present st - De[...]

506471-01 Page 33 of 41 Issue 1034 Controls Following is a description of the operation of some of the controls used in this furnace. All models use one of each control, except as noted. Pressure Switch The pressure switch is a normally open switch that monitors combustion air flow . Inadequate air flow resulting from excessive venting system restr[...]

506471-01 Page 34 of 41 Issue 1034 The heating value of the gas can be obtained from the local utility company . For Propane Gas: The only check for the furnace rate is to properly adjust the manifold pressure using a manometer and the information provided in T able 12. T ypical manifold set point for installations at altitudes from 0 to 4500 feet [...]

506471-01 Page 35 of 41 Issue 1034 It is recommended that this furnace be inspected by a qualified service technician at the beginning of each heating season. Filters Filters should be checked at least every 6 weeks. Disposable filters should be replaced when dirty , and cleanable filters should be cleaned regularly . It is important to keep the ai[...]

506471-01 Page 36 of 41 Issue 1034 CONTROL DIAGNOSTICS T roubleshooting Make the following visual checks before troubleshooting: 1. Check to see that the power to the furnace and the integrated ignition/blower control board is ON. 2. The manual shutoff valves in the gas line to the furnace must be open. 3. Make sure all wiring connections are secur[...]

506471-01 Page 37 of 41 Issue 1034 Control Group T ransformer High limit control Auxiliary limit Gas valve Integrated ignition/blower control board Flame sensor Pressure switches – 1 st stage and 2 nd stage Blower door interlock switch Combustion blower assembly Flame rollout protector switch Hot surface igniter Input choke REP AIR PARTS The foll[...]

506471-01 Page 38 of 41 Issue 1034 Wiring Diagram 5 AMP IGNITION CONTROL TRANSFORMER INDUCED DRAFT BLOWER INTERLOCK SWITCH 1 2 21 C HI GAS V AL VE M MAIN LIMIT 12 96 3 11 8 5 2 10 7 41 3 3 120V 24V HO T NEUTRAL GROUND 120/1/60 1 2 3 4 5 BLK RED WHT WHT RED BLK 5-PIN CONNECT OR WHT YEL YEL WHT BLU ORN RED/BLK RED WHT YEL VL T BRN GR Y BLK BLK/WHT WH[...]

506471-01 Page 39 of 41 Issue 1034 T ypical Field Wiring Diagram Figure 41[...]

506471-01 Page 40 of 41 Issue 1034 ST ART -UP & PERFORMANCE CHECK LIST UNIT SET UP[...]

506471-01 Page 41 of 41 Issue 1034 UNIT OPERA TION[...]