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Allied Air Enterprises 80G1UH2V Furnace User Manual

1. ooog LE LLLI ILI me gd 3E ig gt HOT 1 ij 2 IGNITION CONTROL neji HEAT STAGING 5 PIN 5 JUMPER GREEN LED Siete RED LED DOO AMBER LED a wwecRGY yoo D CIRCULATION 5 PIN eterereletete eee BLOWER at RE an oe ee lt gt 17777 BLK OOOO00 WAT INPUT CHOKE FAULT CODE Y RG OQ IF USED HISTORY THERMOSTAT CONDENS BUTTON SEE NOTE 1 eel ot oo BLK Aij LINE VOLTAGE FACTORY BRN NOTES TYP LINE VOLTAGE FIELD LOW VOLTAGE FACTORY 1 PRESS AND RELEASE FAULT CODE HISTORY BUTTONTO LOW VOLTAGE FIELD DISPLAY FAULT CODES TO ERASE CODES PRESS AND HOLD BUTTON IN FOR MORE THAN 5 SECONDS 2 IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE MUST BE REPLACED IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A TEMP RATING OF AT LEAST 90 C 3 PROPER POLARITY MUST BE OBSERVED FOR FIELD LINE VOLTAGE SUPPLY IGNITION CONTROL WILL LOCK OUT IF POLARITY IS REVERSED 4 FOR TEMPORARY SERVICE REPLACEMENT OF CIRCULATING BLOWER MOTOR WITH PSC MOTOR CONNECT DESIRED SPEED TAP TO EAC TERMINAL AND NEUTRAL TAP TO NEUTRAL TERMINAL ON IGNITION CONTROL 5 DO NOT CONNECT C COMMON CONNECTION BETWEEN INDOOR UNIT AND THERMOSTAT EXCEPT WHEN REQUIRED BY THE INDOOR T
2. ABOUH2VO7OA12 mi em 6 xa ws ss 1st Norm 679 754 842 937 690 735 75 885 ABOUH2VO90B12 2nd Norm 1091 1348 1359 1484 87 1055 1145 125 tt 1013 1122 1257 1372 56 675 75 785 AgOUH2VOSOB1e 1 74 1079 1380 1390 1496 940 1200 1405 1600 it 99 1033 1271 1399 600 960 1090 ABDUH2VOSOC20 2nd 1199 1450 1505 1662 1440 1685 1910 2120 ds 1076 1147 1403 1541 980 120 1395 1545 con 1s 1301 1361 1621 1797 96 1075 1181 1336 2nd Norm 1524 1680 1712 2090 1420 1512 1698 1898 ds Norm 1413 1514 1584 1921 964 1014 1181 1382 Speed Adjustment 10 moving jumper from NORM RIGHT INLET Heating 50 Static Cooling 50 Static Speed Heat Heat Heat Heat Cool Cool Cool Cool Motor Hp Stage A i id m de ABOUH2VO7OAL mi em 9 9x nor 673 750 864 949 689 72 795 859 ABDUH2VO90B12 2nd Norm 1082 1335 1350 1456 872 1032 1115 1235 ist 987 1085 1236 1335 604 684 759 239 BEER E Nom 9 1083
3. 27 13 21 _ _ J 3 23 5 35 49 _ L2 p s 57 736 so 25 ms 37 5 pq 5 j s j 12 26 14 36 10 s me 128 21 18 3 __ 5 Jj NR NR NR 220 290 __ 5 20 j 14 537 L2 537 74 56 me 78 t3 375 5 9 ee 73 j 140 10 33 NR NR e 725 1255 223 77 34 5 R NR nR f 75 28 26 35 _ L2 _ NR NR 192 24 36 9 p 21 a L2 3 o 1e 21 32 7 __5 4 74 72 j s 2n t3 __ ON o9 s 12 25 J 37 0 NR NR ts 2 28 37 20 NS NR R 223 246 367 d NR NR NR NR NR NR NR 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 two 90 elbows For each additional 90 elbow or equivalent for example two 45 elbows equal one 90 elbow beyond two the maximum capacity listed in the venting table should be reduced by 10 percent 0 90 x maximum listed capacity Table 4 50647 1 01 Issue 1034 Page 19 of 41 Vent Connector Capacity Type B Double Wall Vents with Type B Double Wall Connectors Serving Two or More Category
4. ___ _ _ inches inches 10 20 30 40 60 70 80 90 100 immi mm 3 048 6 096 9 144 12 192 18 288 21 336 24 384 27 432 30 480 12 622 175 120 97 82 73 66 61 57 53 50 3 4 824 360 250 200 170 151 138 125 118 110 103 1 1 049 680 465 375 320 285 260 240 220 205 195 1 1 2 1 610 2100 460 1180 990 900 810 750 690 650 620 38 1 40 894 59 46 41 34 33 41 2803 25 48 22 94 2124 19 54 18 41 17 56 2 2 067 3950 2750 2200 1900 1680 1520 1400 1300 1220 1150 50 8 52 502 111 85 77 87 62 30 53 80 47 57 43 04 39 64 36 81 34 55 32 56 2 4 2 2 469 6300 4350 3520 3000 2650 2400 2250 2050 1950 1850 63 5 67 713 178 339 123 17 99 67 84 95 75 04 67 96 63 71 58 05 55 22 52 38 3 3 068 76 2 77 927 Note Capacity given in cubic feet m of gas per hour and based on 06 0 specific gravity gas 1 1 4 1 380 1400 950 770 660 580 530 490 460 430 400 31 75 35 052 39 64 26 90 21 80 18 69 16 42 15 01 13 87 13 03 12 18 11 33 11000 7700 6250 5300 4750 4300 3900 3700 3450 3250 311 48 218 03 176 98 150 07 134 50 121 76 110 43 104 77 97 69 92 03 Table 9 50647 1 01 Issue 1034 Page 23 of 41 Loft Side Piping _ Standard MANUAL MAIN SHUT OFF VALVE With 1 8 in NPT Plugged Tap Shown GROUND JOINT
5. 6 Electrically ground the unit according to local codes or in the absence of local codes according to the current National Electric Code ANSI NFPA No 70 A green ground wire is provided in the field make up box NOTE This furnace contains electronic components that are polarity sensitive Make sure that the furnace is wired correctly and is properly grounded 7 line voltage EAC 1 4 spade terminal is provided on the furnace integrated control Any electronic air cleaner or other 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 See Figure 41 for control configuration This terminal is energized when the indoor blower is operating 8 line voltage HUM 1 4 spade terminal is provided on the furnace integrated control 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 terminals See Figure 41 for control configuration This terminal is energized in the heating mode whenever the combustion air inducer is operating 9 One 24V terminal is provided on the furnace inte grated control terminal block Any humidifier rated up to 0 5 amp can be connected to this terminal with the ground leg of the circuit being connected to either ground or the terminal See Figure 41 for control configuration
6. UPFLOW POSITION Right Side Vent Discharge cover plate collector box fiue transition vent pipe pressure switch make up AIR FLOW Pressure switch tubing may be too long Cut to fit then reattach to barbed fitting on pressure switch Tubing must not be allowed to sag Figure 18 Page 13 of 41 Horizontal Position HORIZONTAL LEFT POSITION Top Vent discharge HORIZONTAL RIGHT POSITION Top Vent Discharge vent pipe pressure switch flue transition pressure switch cover plate transition d make up box collector box make up box 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 plate and reconnect pressure switch hose Resecure pressure seitch wires Either pull excess wires through the blower compartment and secure using supplied wire tie or coil excess wire and secure to the gas manifold Remove make up box assembly 2 screws and cut wire tie to free make up box wires Reinstall make up box on other side of cabinet Resecure make up box wires Either pull excess wires through the blower compartment and secure using supplied wire tie or coil excess wire and secure to the gas manifold Figure 21 Figure 19 HORIZONTAL LEFT POSITION Side Vent Discharge HORIZONTAL RIGHT POSITION vent pipe Side Vent Discharge
7. nos 778 100 ABOUH2VOSOC20 2nd 1139 1400 1464 1626 1176 1388 1543 1737 em f a008 33 397 as 110 20 1 1 74 1368 1709 1750 1904 1375 1526 1687 1843 1s 1383 1491 1567 1889 958 1005 1176 1356 Speed Adjustment or 10 by moving jumper from NORM ASOUH2V135D20 RIGHT INLET w RAB with Return Air Base Heating 50 Static Cooling 50 Static Sneed Heat Heat Heat Heat Cool Cool Cool Cool Motor Stage 5 ui E icd mn doe ABOUH2VO7OA12 2nd Nom na ma na ma 1st ma ma na wa ABOUH2VO90B12 2nd Nom 1179 1340 1360 1469 879 1005 1113 1217 ist 1094 1204 1343 1474 619 70 805 860 ABOUH2VOSOB16 2nd 1079 1382 1390 1496 904 1126 1347 1525 ist 981 1045 1277 1413 59 762 928 105 ABOUH2V090C20 2nd 1144 1450 1464 1615 1164 1379 1558 1753 1st 1022 1095 1342 1496 769 968 1090 1245 77 ONES 1s Nom 1252 1318 1576 1749 108 1038 1159 1307 p CIIM ee 1st 1375 1484 1558 1875 954 1003
8. 10 Install the room thermostat according to the instructions provided with the thermostat If the furnace is being matched with a heat pump refer to the instruction packaged with the dual fuel thermostat Page 26 of 41 Issue 1034 Indoor Blower Speeds 1 When the thermostat is set to FAN ON the indoor blower will run continuously at approximately 38 of the second stage cooling speed when there is no cooling or heating demand 2 When this unit is running in the heating mode the indoor blower will run on the heating speed designated by the positions of DIP switches 11 and 12 3 When there is a cooling demand the indoor blower will run on the cooling speed designated by the positions of DIP switches 5 and 6 Generator Use Voltage Requirements The following requirements must be kept in mind when specifying a generator for use with this equipment e The furnace requires 120 volts 10 Range 108 volts to 132 volts e The furnace operates at 60 Hz 5 Range 57 Hz to 63 Hz e The furnace integrated control requires both polarity and proper ground Both polarity and proper grounding should be checked before attempting to operate the furnace on either permanent or temporary power e Generator should have a wave form distortion of less than 5 RHO Electrical Wiring A WARNING Risk of electrical shock Disconnect electrical power at the circuit breaker or service panel before making electr
9. Appliances Vent and Connector Diameter D inches Connector Rise 3nch 94h Sich ___ Appliance Input Rating in Thousands of Btu Per Hour Table 5 Common Vent Capacity Type B Double Wall Vents with Type B Double Wall Connectors Serving Two or More Category Appliances Common Vent Diameter D inches 7m Appliance input Rating in Thousands of Btu Per Hour Table 6 Page 20 of 41 Issue 1034 506471 01 Vent Connector Capacity Type B Double Wall Vents with Single Wall Metal Connectors Serving Two or More Category Appliances Vent and Connector Diameter D inches 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 two 90 elbows For each additional 90 elbow or equivalent for example two 45 elbows equal 90 elbow beyond two the maximum capacity listed in the venting table should be reduced by 10 percent 0 90 x maximum listed capacity Table 7 Common Vent Capacity Type B Double Wall Vents with Single Wall Metal Connectors Serving Two or more Category Appliances Common Vent Diameter D inches Appliance Input Rating Thousands of Btu Per Hour 506471 01 Issue 1034 Page 21 of 41 Removal of the Furnace from Common Vent In the event that an existing furnace is removed from a venting
10. Figure 1 506471 01 Issue 1034 Page 3 of 41 A80UH2V 4 80061 2 Gas Furnace The A80UH2V 80G1UH2V gas furnace is shipped with ready for installation in the upflow or horizontal position left or right for horizontal left position the combustion air pressure switch must be moved The furnace is shipped with the bottom panel in place The bottom panel must be removed if the unit is to be installed in a horizontal application The panel may also be removed in upflow applications The furnace is equipped for installation in natural gas applications A conversion kit ordered separately is required for use in propane LP gas applications Shipping and Packing List 1 Assembled Gas Furnace 1 Bagassembly containing the following 2 Screws 3 Wire nuts 1 Snap bushing 1 Snap Plug 1 Wire tie 1 Vent warning label 1 Owner s manual and warranty card Check equipment for shipping damage If you find any damage immediately contact the last carrier Please refer to specification sheets for available accessories Safety Information A DANGER DANGER OF EXPLOSION There are circumstances in which odorant used with LP Propane gas can lose its scent In case of a leak LP Propane gas will settle close to the floor and may be difficult to smell An LP Propane leak detector should be installed in all LP applications A WARNING Improper installation adjustment alteration service or mai
11. 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 result in incomplete combustion and the formation of carbon monoxide gas This toxic gas might then be distributed throughout the house by the furnace duct system In upflow applications the return air can be brought in through the bottom or either side of the furnace If a furnace with bottom return air is installed on a platform make an airtight seal between the bottom of the furnace and the platform to ensure that 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 50647 1 01 Venting 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 Mounting Screws Location Figure 15 UPFLOW POSITION Top Vent Discharge vent pipe flue vA collector box transition pressure 4 switch make up AIR FLOW Figure 16 A IMPORTANT The unit wil
12. 1146 1338 Speed Adjustment 10 moving jumper from NORM co Table 11 50647 1 01 Issue 1034 Page 29 of 41 START UP Lighting Instructions For Your Safety Read Before Operating WARNING If you do not follow these instructions exactly a fire or explosion may result causing property damage personal injury or loss of life 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 some gas is heavier than air and will settle on the floor What to do if you smell gas e Donottry to light any appliances e Extinguish any open flame e Do not touch any electric switch do not use any phone in your building e Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions e If you cannot reach your gas supplier call the fire department Do not use this furnace if any part has been under water Immediately call a qualified service technician to inspect the furnace and to replace any part of the control system and gas control which has been under water IMPORTANT Refer to the Lighting Instruction label on the furnace for instructions on operating the specific controls used on your unit Page 30 of 41 Issue 1034 To Start Furnace A
13. DEHUM terminal on the control board must be connected to the normally closed contact of the humidity control so that the board senses an open circuit on high humidity In this setup the variable speed motor will operate at 18 reduction in the normal cooling airflow rate when there is a call for dehumidification Both the passive and active dehumidification methods described above can be utilized on the same furnace Circulating Airflow Adjustments Cooling Mode The units are factory set for the highest airflow for each model Adjustments can be made to the cooling airflow by repositioning the jumper plug marked COOL A B C D see Figure 32 based on the information found in the table To determine what CFM the motor is delivering at any time count the number of times the amber LED on the control board flashes Each flash signifies 100 CFM count the flashes and multiply by 100 to determine the actual CFM delivered for example 10 flashes x 100 1000 Page 28 of 41 Issue 1034 Heating Mode The unit as shipped is factory set to run at the middle of the heating rise range as shown on the unit rating plate If higher or lower rise is desired change the airflow 1595 up or down by moving the ADJUST jumper plug see Figure 32 from the NORM position to the or position This adjustment will also cause the cooling to be raised or lowered by 15 The TEST position on the ADJUST tap is not used
14. Make sure the final high and low fire manifold pressures are within the allowable ranges specified above for the gas being used A CAUTION The furnace rate must be within 296 of the appliance rating input Be sure to replace the inlet and outlet pressure tap plugs after testing and or adjusting gas input Page 33 of 41 For Natural Gas Check the furnace rate by observing the gas meter when available making sure all other gas appliances are turned off The test hand on the meter should be timed for at least one revolution Note the number of seconds for one revolution BTU HR _ Cubic Feet Per Revolution x 3600 x Heating INPUT ZSeconds Per Revolution Value 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 Table 12 Typical manifold set point for installations at altitudes from 0 to 4500 feet above sea level is 10 0 W C Temperature Rise Check the temperature rise and if necessary adjust blower speed to maintain temperature rise within the range shown on the unit rating plate High Altitude In both the United States and Canada this furnace is approved for operation at altitudes from 0 to 4500 feet above sea level without any required modifications From 4500 to 7500 feet the gas manifold pressure needs to be adjusted accordi
15. CAUTION Be sure the manual gas control has been in the OFF position for at least 5 minutes before starting the unit Do not attempt to manually light the burners 1 Setthe room thermostat to lowest setting 2 Remove burner access door 3 Move the gas control knob to the ON position Use only your hand to turn the gas control knob Never use tools If the knob will not turn by hand don t try to repair it call a qualified service technician Force or attempted repair may result in a fire or explosion 4 Replace the burner access door 5 Turnon the electrical power to the furnace 6 Setroom thermostat to a point above room temperature to light the burners After the burners have ignited set room thermostat to desired temperature To Shut Down Furnace 1 Setthe room thermostat to the lowest setting 2 Turn off all electric power to the furnace 3 Remove burner access door 4 Shutoff gas by moving gas control knob to OFF position 5 Replace the burner access door WARNING Should overheating occur or the gas supply fail to shut off shut off the manual gas valve to the appliance before shutting off the electrical supply 50647 1 01 OPERATION Sequence of Operation see Figures 33 37 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 contacts are in an open position the control
16. energizes the combustion blower on high speed The control then checks for adequate combustion air by making sure the low fire pressure switch contacts are closed The igniter energizes and is allowed to warm up for 7 seconds before the gas valve energizes 1 stage and burners ignite 45 seconds after the control confirms ignition has occurred the control drops the combustion blower to low speed The circulating blower ramps up to 5096 of 1 stage heat speed and operates at that speed for one minute including ramp up time then at 75 of 1 stage heat speed for an additional minute After that the circulating blower operates at full 1 stage heat speed until either the heat call is satisfied or the thermostat initiates a call for 2 stage heat On a call for 2 stage heat the control energizes the circulating air blower on full 2 stage heat If the automatic heat staging option is being used see Single Stage Thermostat Operation on page 27 the furnace does not switch to 2 stage heat in response to a call from the thermostat but instead operates at 1 stage heat for the duration of the selected time before automatically switching to 278 stage heat When the call for heat is satisfied the gas valve and combustion air blower shut down The control board shuts off the gas valve and runs the combustion blower for an additional 15 seconds The circulating air blower continues to run for 2 minutes at 82 of the selecte
17. 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 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 AWARNING CARBON MONOXIDE POISONING HAZARD Failure to follow the steps outlined below for each appliance connected to the venting system being placed into operation could result in carbon monoxide poisoning or death The following steps shall be followed for each appliance connected to the venting system being placed into operation while all other appliances connected to the venting system are not in operation 1 Seal any unused openings in the common venting system 2 Inspect the venting system for proper size and horizontal pitch Determine that there is no blockage restriction leakage corrosion or other deficiencies which could cause an unsafe condition Page 22 of 41 Issue 1034 Close all building doors and windows and all doors between the space in which the appliances remaining connected to the common venting system are located and other spaces of the building Turn on clothes dryers and any appliances not connected to the common venting system Turn on any exhaust
18. 647 1 01 Issue 1034 Page 1 of 41 A80UH2V 8 80G1UH2V Unit Dimensions inches mm NOTE 20C and 20D size units installed in upflow applications that require air volumes of 1800 cfm 850 L s or greater must have one of the following 1 Return air from single side transition will accommodate 20 x 25 x 1 in 508 x 635 x 25 mm cleanable air filter Required to maintain proper air velocity Single side return air with optional RAB Return Air Base Return Air from bottom and one side Return air from both sides Return air from bottom 2 Flue outlet may be horizontal but furnace must be vented vertically 3 Optional external side return air filter kit cannot be used with the optional RAB Return Air Base SUPPLY AIR OPENING TOP VIEW Consider sizing requirements for optional IAQ equipment before 28 3 8 cutting side return opening e 19 1 2 30 26 23 7 8 14 AIR OPENING 15 1 2 ON BOTH SIDES FRONT VIEW SIDE VIEW 110 20 090 12 090 16 090 20 135 20 2 41 Issue 1034 506471 01 EXPLODED VIEW HEAT EXCHANGER COMBUSTION AIR INDUCER mE War e 2 gt 229 p pt P p gt COMBUSTION AIR INDUCER PRESSURE SWITCH ew 1 1 zm M d d We E 5 GAS VALVE ROLLOUT SWITCH BURNER BOX CABINET ACCESS PANEL BLOWER ASSEMBLY
19. Base 123 584 Overall Maximum Minimum 11 279 2 Maximum 122 Unit side retum air 44 356 p verat Maximum 5 5 8 SIDE RETURN Either Side SIDE VIEW 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 or more of air W x H 23 x 11 in 584 x 279 mm The opening can be cut as needed to accommodate plenum or IAQ cabinet while maintaining dimensions shown Side return air openings must be cut in the field There are cutting guides stenciled on the cabinet for the side return air opening The size of the opening must not extend beyond the markings on the furnace cabinet To minimize pressure drop the largest opening height possible up to 14 inches is preferred Figure 10 Page 10 of 41 Issue 1034 506471 01 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 panel has been removed reinstall the bottom cap See Figure 11 Removing the Bottom Panel BOTTOM CAP BOTTOM PANEL Figure 11 Horizontal Application Installatioin clearances Bottom Vent Connector Ww Front 2 1 4 in 57 2 1 4 in 57 mm Front clearance in alcove installation must be 24 in 610 mm Maintain a minimum of 21 in 610 mm f
20. DRIP LEG AUTOMATIC GAS VALVE with manual AUTOMATIC shut off valve GAS VALVE with manual shut off valve FIELD PROVIDED AND INSTALLED With 1 8 in Plugged Tap Shown GROUND JOINT DRIP LEG Right Side Plping Alternate NOTE BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET MANLIAL MAIN SHUT OFF GROUND JOINT UNION DRIP LEG 7 ke t4 H ta 55 E 54 EM i TTF Horizontal Application Right Side Air Discharge Page 24 of 41 Figure 26 Horizontal Applications Possible Gas Piping Configurations MANUAL MAIN SHUT OFF VALVE GROUND JOINT UNION FIELD PROVIDED AND INSTALLED Horizontal Application Left Side Air Discharge MANUAL MAIN SHUT OFF VALVE GROUND JOINT NOTE BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET Figure 27 Issue 1034 50647 1 01 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 femergency shutoff is necessary shut off the main manual gas valve and disconnect the main power to the furnace The installer should properly label these devices A CAUTION Some soaps used for leak detection are corrosive to certain metals Carefully rinse piping thoroughly after leak test has been completed Do not use matches candles flame or
21. HERMOSTAT REFER TO THE THERMOSTAT INSTALLATION INSTRUCTIONS Figure 40 Page 38 of 41 Issue 1034 506471 01 506471 01 Typical Field Wiring Diagram 120 1 60 HOT Or HOT SURFACE O ae IGN IGNITER ui 59 INDUCED DRAFT BLOWER IND HIGH IND LOW HUM HUMIDIFIER AIR CLEANER CIRC CIRCULATION 120V BLOWER TRANSFORMER 24V FLAME SENSOR T AUX LIMIT AUX IGNITION pins TO IF USED LIMIT oto PRESSURE W1W2C RG SWITCH ol STAGE C HPSI e ND STAG 1g GAS VALVE C ROLLOUT ROLLOUT DRAIN N SWITCH SWITCH Q IF USED 4 1 PRESSUR 9 SWITCH HIGH gt PRESSURE SWITCH Gro tem EN MAIN OOOO P waves OC THERMOSTAT CONDENSER Figure 41 Issue 1034 Page 39 of 41 40 41 START UP 8 PERFORMANCE CHECK LIST UNIT SET UP Furnace Model Number 4 Serial Number HO SUPPLY E j S Line Voltage Co E 1 GAS SUPPLY Natural 5 LP Propane Gas C Piping Connections Tight Leak Tested Fiter C Supply Line Pressure w c TAPA FARA AAA LAUREA Gas Supply Pressure 3 DUCT SYSTEM SUPPLY AIR DUCT LJ Sealed Insulated if necessary poa gg mI tu un a ut a uv e INTAKE EXHAUST PIPE RETURN DUCT LJ All Joints Primed and Glued Filter Installed and Clean C Terminations Inst
22. INSTALLATION INSTRUCTIONS A80UH2V amp 80G1UH2V Warm Air Gas Furnace Upflow Horizontal Left and Right Air Discharge e 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 A WARNING A CAUTION Improper installation adjustment alteration service or As with any mechanical equipment personal injury can maintenance can cause property damage personal injury result from contact with sharp sheet metal edges Be or loss of life Installation and service must be performed careful when you handle this equipment by alicensed professional installer or equivalent service agency or the gas supplier TABLE OF CONTENTS Unit Dimensions Gas Piping A80UH2V 80G1UH2V Parts Arrangement Electrical A80UH2V amp 80G1UH2V Gas Furnace Thermostat Shipping and Packing List Unit Start Up Safety Information Heating Sequence of Operation Use of Furnace as a Construction Heater Gas Pressure Adjustment General High Altitude Combustion Dilution Ventilation Air Other Unit Adjustments Setting Equipment Maintenance Filters Repair Parts List Duct System Wiring Diagram Venting Manufactured By Allied Air Enterprises Inc A Lennox International Inc Company 215 Metropolitan Drive 50647 1 01 x West Columbia SC 29170 50
23. LENGTH AS SHORT AS PRACTICAL FOR MAXIMUM LENGTH SEE NOTE TO LEFT m NOTE Refer to provided venting P tables for installations FURNACE VENT CONNECTOR INTERIOR TILE LINED MASONRY CHIMNEY NOTE 7he chimney must be properly sized per provided venting tables or lined with listed metal lining system ______2 ___________ _ ee PERMANENTLY SEALED FIREPLACE OPENING Figure 25 DO NOT insulate the space between the liner and the chimney wall with puffed mica or any other loose granular insulating material A IMPORTANT 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 or an insulated single wall flexible vent lining system which has been sized according to the provided venting tables and the vent pipe manufacturer s instructions A fan assisted furnace may be commonly vented into an existing lined masonry chimney if the following conditions are met e The chimney is currently serving at least one drafthood equipped appliance e The vent connectors and chimney are sized according to the provided venting tables If type B1 double wall vent is used inside a chimney no other appliance can be vented into the chimney The outer wall of type B1 vent pipe must not be exposed to flue products A type B1 vent or masonry c
24. The jumper plug on the HEAT tap should remain in the position A B C or D listed in the HEAT Setting column in the table found in Figure 32 Changing the setpoints may not increase or decrease heating blower speeds In some cases running the blower with the heat settings in the wrong position may cause the furnace to operate outside the furnace s intended temperature rise range Continuous Blower Operation The comfort level of the living space can be enhanced when using this feature by allowing continuous circulation of air between calls for cooling or heating The circulation of air occurs at half the full cooling airflow rate To engage the continuous blower operation place the fan switch on the thermostat into the ON position A call for fan from the thermostat closes R to G on the ignition control board The control waits for a 1 second thermostat debounce delay before responding to the call for fan by ramping the circulating blower up to 50 of the cooling speed When the call for continuous fan is satisfied the control immediately ramps down the circulating blower ADJUST HEAT and COOL Taps on Integrated Ignition Blower Control Board NORM mm e 9 lt Figure 32 50647 1 01 ADJUSTING AIRFLOW BOTTOM INLET Heating 50 Static Cooling CFM 2 50 Static Speed Heat Heat Heat Heat Cool Cool Cool Cool St E age Adjustment iid dd
25. __ 27 7v 2 t zs 5 a NE NN NK 137 5 5 22 5 45 5 p o s 4 m s5 2e _ 2 56 s t 6 27 8 30 NR 73 214 104 36 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 two 90 elbows For each additional 90 elbow or equivalent for example two 45 elbows equal 90 elbow beyond two the maximum capacity listed in the venting table should be reduced by 10 percent 0 90 x maximum listed capacity Table 3 Page 18 of 41 Issue 1034 506471 01 Capacity of Type B Double Wall Vents with Single Wall Metal Connectors Serving a Single Category Appliance Vent and Connector Diameter D Inches ___ L feet Appliance Input Rating in Thousands of Btu Per Hour RARE M M M M J TM M M M t w AA A A H RCC RFC U AI77OQOQ e gt 90 5 122 15 243 14 ME NE 36 22 19 j s 7 1935 5 jq 52 s 76 10 75 148 zu 10
26. alled C Horizontal Pipes Sloped if applicable 1 Grilles Unobstructed VOLTAGE CHECK C Condensate Trap Primed Line Sloped Supply Voltage Pipes Supported Electrical Connections Tight Heat Cable Installed and Operable if applicable Issue 1034 50647 1 01 UNIT OPERATION Combustion CO HEATING MODE GAS MANIFOLD PRESSURE 2 COMBUSTION SAMPLE CO CO PPM 3 INDOOR BLOWER AMPS 4 TEMPERATURE RISE Supply Duct Temperature Return Duct Temperature Temperature Rise 5 TOTAL EXTERNAL STATIC dry coil Supply External Static Return External Static Total External Static Contractor s Telephone Job Address 506471 01 Issue 1034 ur un JC UR D e f MP Temperatures Filter COOLING MODE 3 INDOOR BLOWER 5 4 TEMPERATURE DROP Return Duct Temperature Supply Duct Temperature Temperature Drop 5 TOTAL EXTERNAL STATIC dry coil Supply External Static Return External Static Total External Static 6 DRAIN LINE LeakFree 7 THERMOSTAT C Adjusted and Programmed Operation Explained to Owner Checklist Completed Technician s Name Page 41 of 41
27. are assumed to have no elbows type B vent material or material having equivalent in the vent system For all other vent configurations insulation qualities the vent system is assumed to have two 90 elbows 14 All venting pipe passing through floors walls and For each additional 90 elbow or equivalent for example ceilings must be installed with the listed clearance to two 45 elbows equal one 90 elbow beyond two the combustible materials and be fire stopped according to maximum capacity listed in the venting table should be local codes In absence of local codes refer to NFGC reduced by 1095 0 90 x maximum listed capacity 2223 1 8 The common venting Tables 5 6 7 and 8 were 15 No portion of the venting system can extend into or pass through any circulation air duct or plenum Vent connectors serving Category appliances shall not be connected to any portion of mechanical draft systems operating under positive pressure such as Category III or IV venting systems If vent connectors are combined prior to entering the Connector Diameter Maximum Horizontal common vent the maximum common vent capacity listed in the common venting tables must be reduced by 1096 the equivalent of one 90 elbow 0 90 x maximum common vent capacity The common vent diameter must always be at least as 18 Table 2 19 large as the largest vent connector diameter In no case shall the vent connector be sized more than two consecuti
28. d requirements for exhaust vents and gas piping A portion of this information has been reprinted with permission from the National Fuel Gas Code ANSI Z223 1 This reprinted material is not the complete and official position of the ANSI on the referenced subject which is represented only by the standard in its entirety A WARNING Insufficient combustion air can cause headaches nausea dizziness or asphyxiation It will also cause excess water in the heat exchanger resulting in rusting and premature heat exchanger failure Excessive exposure to contaminated combustion air will result in safety and performance related problems Avoid exposure to the following substances in the combustion air supply Permanent wave solutions Chlorinated waxes and cleaners Chlorine base swimming pool chemicals Water softening chemicals De icing salts or chemicals Carbon tetrachloride Halogen type refrigerants Cleaning solvents such as perchloroethylene Printing inks paint removers varnishes etc Hydrochloric acid Antistatic fabric softeners for clothes dryers Masonry acid washing materials 50647 1 01 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 out of th
29. d heating speed low fire or high fire before ramping down In the event the unit loses ignition the control will attempt to recycle up to five times before it goes into a 1 hour lockout Lockout may be manually reset by removing power from the control for more than 1 second or removing the thermostat call for heat for more than 3 seconds If during a heating cycle the limit control senses an abnormally high temperature and opens the control board de energizes the gas valve and the combustion blower while the circulating blower ramps up to 2 stage heat speed The circulating blower remains energized until the limits are closed Fan On When the thermostat is set for continuous fan operation and there is no demand for heating or cooling a call for fan closes 50647 1 01 Issue 1034 the R to G circuit and the circulating blower motor runs at 5090 of the selected cooling until switched off When the call for fan is turned off the control de energizes the circulating blower Cooling The unit is set up at the factory for single stage cooling For two stage cooling operation clip the jumper wire located between the Y to Y2 terminals on the integrated ignition blower control board If the active dehumidification feature is enabled the circulating blower runs at 82 of the selected cooling speed as long as there is a call for dehumidification A IMPORTANT The system must not be in either the passive or activ
30. e dehumidification mode when charging a cooling system Single Stage Cooling A call for cooling from the thermostat closes the to Y circuit on the integrated ignition blower control board The control waits for a 1 second delay before energizing the circulating blower to 82 of the selected cooling passive dehumidification mode After 7 5 minutes the circulating blower automatically ramps up to 10095 of the selected cooling airflow When the call for cooling is satisfied the circulating blower ramps back down to 82 of the selected cooling airflow for 1 minute then shuts off Two Stage Cooling A call for 1 stage cooling from the thermostat closes the R to Y circuit on the control board The control waits for a 1 second delay before energizing the circulating blower The blower motor runs at 57 of the selected air flow for the first 7 5 minutes of the 1 stage cooling demand passive dehumidification mode After 7 5 minutes the blower motor runs at 7096 of the selected cooling air flow until 1 stage cooling demand is satisfied A call for 2 stage cooling from the thermostat closes the R to Y2 circuit on the control board The blower motor ramps up to 10090 of the selected cooling air flow When the demand for cooling is met the blower ramps down to 1 until satisfied then ramps down to 57 for 1 minute then turns off Heat Pump For heat pump operation clip the jumper wire located below the O terminal on t
31. e house When fireplaces exhaust fans or clothes dryers are used at the same time as the furnace much more air is necessary 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 corrode furnace components The requirements for providing air for combustion and ventilation depend largely on whether the furnace is installed in an unconfined or a confined space Unconfined Space An unconfined space is an area such as a basement or large equipment room with a volume greater than 50 cubic feet 1 42 m per 1 000 Btu 29 kW per hour of the combined input rating of all appliances installed in that space This space also includes adjacent rooms which are not separated by a door Though an area may appear to be unconfined it might be necessary to bring in outdoor air for combustion 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 Confined Space A confined space is an area with a volume less than 50 cubic feet 1 42 m per 1 000 Btu 29 kW per hour of the combin
32. e the switch to remain open A80UH2V 80G2UHV models have two pressure switches Rollout Switch The rollout switch is a normally closed switch that opens when abnormal temperatures exist in the burner area This can be caused by a restricted heat exchanger causing burner flame to roll out into the vestibule area or burner box This switch must be manually reset by pushing the button on top to restore furnace operation A80UH2V and 80G2UHV models have two rollout switches Primary Limit Control This is a normally closed control that opens if abnormally high circulating air temperatures occur It is an automatic reset control Auxiliary Limit Control This is a normally closed control located on the circulating air blower housing that opens under abnormal reverse air flow conditions that could occur in a counterflow or horizontal installation if the circulating air blower fails It is an automatic reset control Interlock Blower Door Switch When the blower door is removed the interlock switch breaks the power supply to the burner controls and blower motor The switch operation must be checked to confirm it is operating correctly Checking and Adjusting Gas Input The minimum permissible gas supply pressure for the purpose of input adjustment is 5 w c for natural gas or 11 W C for propane gas This furnace requires conversion for use with propane see Accessories section on page 26 for correct kit The maximum in
33. ed 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 furnace This is especially important when the furnace is mounted on a platform in a confined space such as a closet or small equipment room Even a small leak around the base of the unit at the platform or at the return air duct connection can cause a potentially dangerous negative pressure condition Air for combustion and ventilation can be brought into the confined space either from inside the building or from outside 50647 1 01 Issue 1034 Equipment in Confined Space All Air From Inside WATER HEATE iN FURNACE OPENINGS To Adjacent ra Room NOTE Each opening shall have a free area of at least one square inch per 1 000 Btu 645 per 29 kW per hour of the total input rating of all equipment in the enclosure but not less than 100 square inches 64546 mm Figure 3 Air from Inside If the confined space that houses the furnace adjoins a space categorized as unconfined air can be brought in by providing two permanent openings between the two spaces Each opening must have a minimum free area of 1 square inch 645 m
34. erglass wool Breathing this may cause lung cancer Fiberglass wool is known to the State of California to cause cancer Fiberglass wool may also cause respiratory skin and eye irritation To reduce exposure to this substance or for further information consult material safety data sheets available from address shown below or contact your supervisor Allied Air Enterprises Inc 215 Metropolitan Drive West Columbia SC 29170 Page 6 of 41 Issue 1034 Combustion Dilution amp Ventilation Air In the past there was no problem in bringing in sufficient outdoor air for combustion Infiltration provided all the air that was needed In today s homes tight construction practices make it necessary to bring in air from outside for combustion Take into account that exhaust fans appliance vents chimneys and fireplaces force additional air that could be used for combustion out of the house Unless outside air is brought into the house for 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 these furnaces to ensure efficient and safe operation You must consider combustion air needs an
35. fans such as range hoods and bathroom exhausts so they will operate at maximum speed Do not operate a Summer exhaust fan Close fireplace dampers Follow the lighting instructions Turn on the appliance that is being inspected Adjust the thermostat so that the appliance operates continuously After the burners have operated for 5 minutes test for leaks of flue gases at the draft hood relief opening Use the flame of a match or candle After determining that each appliance connected to the common venting system is venting properly step 3 return all doors widows exhaust fans fireplace dampers and any other gas burning appliances to their previous mode of operation If a venting problem is found during any of the preceding tests the common venting system must be modified to correct the problem Resize the common venting system to the minimum vent pipe size determined by using the appropriate tables in Appendix G These are in the current standards of the National Fuel Gas Code ANSI 2223 1 50647 1 01 Gas Piping 4 The piping should be sloped 1 4 inch 6 4 mm per 15 feet 4 57 m upward toward the meter from the furnace The piping must be supported at proper intervals every 8 to 10 feet 2 44 to 3 01 m with suitable hangers or straps Install a drip leg in vertical pipe runs to the unit If a flexible gas connector is required or allowed by the 5 1 8 plugged tap or pressure post is located authority tha
36. he LED will indicate the failure code The flash codes are presented in Table 13 Lockout due to too many flame 8 Flashes dropouts Fault Code History Button 9 Flashes Incorrect polarity and phasing The control stores the last five fault codes in memory A pushbutton switch is located on the control see Figure 40 on page 38 When the pushbutton switch is pressed and released the control flashes the stored fault codes The most recent fault code is flashed first the oldest fault code is flashed last To clear the fault code history press and hold the pushbutton switch in for more than 5 seconds before releasing LED High Heat State LED Status Description On A80UH2V and 80G1UH2V models a green LED is provided on the control board to indicate high heat state LED Off No demand for high heat see Table 14 LEDO High heat demand operating normally CFM LED LED Flashing High heat demand high pressure On A80UH2V and 80G1UH2V models equipped with a switch not closed variable speed motor an amber LED is provided on the control board to display CFM To determine what CFM the Table 14 motor is delivering at any time count the number of times the amber LED flashes Each flash signifies 100 CFM count the flashes and multiply by 100 to determine the actual CFM delivered for example 10 flashes x 100 1000 Table 13 High Heat State Green LED Page 36 of 41 Issue 1034 506471 01 REPAIR PARTS The following repai
37. he integrated ignition blower control board In heat pump mode a call for heat will result in the circulating air blower operating at the selected cooling airflow after a brief ramp up period Page 31 of 41 1st Stage 2nd Stage W1 W2 Heat Wi W2 w w W1 Heat Demand Present w1 Heat Demand Satisfied W2 High Heat Demand Present w2 High Heat Demand Satisfied 50 CALL OFF Percentage of Low Fire CFM Percentage of High Fire Figure 33 High Heat W2 Call Single Stage Cooling 7 5 minutes m 8296 Y Cool Demand Present W2 y Cool Demand Satisfied CALL W2 High Heat Demand Present OFF w2 High Heat Demand Satisfied Figure 36 Percentage of High Fire CFM Two Stage Cooling Figure 34 Y1 Y2 1 2 Y1 10096 Call for Fan 7 5 minutes 70 70 5790 5096 Fan Switch ON g Fan Switch OFF CALL Y1 1 Stage Cool Demand Present OFF y1 1 Stage Cool Demand Satisfied Figure 35 Y2 2 Stage Cool Demand Present y2 2 Stage Cool Demand Satisfied Figure 37 Page 32 of 41 Issue 1034 506471 01 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 restriction or a failed combustion blower will caus
38. himney liner shall terminate above the roof surface with a listed cap or a iisted roof assembly according to the terms of their respective listings and the vent manufacturer s instructions When inspection reveals that an existing chimney is not safe for the intended purpose it shall be rebuilt to conform to nationally recognized standards lined or relined with suitable materials or replaced with a gas vent or chimney suitable for venting The chimney passageway must be checked periodically to ensure that it is clear and free of obstructions Page 16 of 41 Issue 1034 Do not install a manual damper barometric draft regulator or flue restrictor between the furnace and the chimney Never connect a Category appliance to a chimney that is servicing a solid fuel appliance If a fireplace chimney flue is used to vent this appliance the fireplace opening must be permanently sealed Atype B or listed chimney lining system that passes through an unused masonry chimney flue is not considered to be exposed to the outdoors General Venting Requirements Vent these furnaces according to these instructions 1 Vent diameter recommendations and maximum allowable piping runs are found in the provided venting tables 2 In no case should the vent or vent connector diameter be less than the diameter specified in the provided venting tables 3 The minimum vent capacity determined by the sizing tables must be less than the low fire inpu
39. ical connections Failure to disconnect power supplies can result in property damage personal injury or death The furnace must be grounded and wired in accordance with local codes or in the absence of local codes with the National Electrical Code ANSI NFPA No 70 latest edition and or CSA C22 1 Electrical Code latest edition if an external electrical source is utilized 506471 01 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 Type T wire 63 F 35 rise Connect a sufficiently sized wire with ground to the furnace s line voltage connections and ground lug Refer to the furnace rating plate for electrical characteristics to be used in sizing field supply wiring and overcurrent protection The line voltage supply should be routed through a readily accessible disconnect located within sight of the furnace A junction box on the furnace side panel is provided for line voltage connections Refer to the furnace wiring diagram for specific connection information Proper polarity of the supply connections and NEUTRAL must be observed to ensure that safety controls provide the protection intended A connection to the ground lug and actual earth ground typically a ground stake or buried steel pipe must be maintained for proper operation Thermostat Install a room thermostat according to the instructi
40. ication The blower motor and induced draft motor are pre lubricated by the manufacturer and do not require further lubricating attention However the motors should be cleaned periodically to prevent the possibility of overheating due to an accumulation of dust and dirt on the windings or on the motor exterior Page 35 of 41 CONTROL DIAGNOSTICS Failure Codes Red LED Troubleshooting Make the following visual checks before troubleshooting LED Status Fault Description 1 Check to see that the power to the furnace and the integrated ignition blower control board is ON No power to control or control LED Off hardware fault detected 2 The manual shutoff valves in the gas line to the furnace 3 Make sure all wiring connections are secure eon Flame Present with gas valve off gt Flash Pressure switch closed with 4 Review the Sequence of Operation see page 31 ashes induceret Start the system by setting thermostat above room Low fire pressure rollout or aux temperature Observe system response Then use the 3 Flashes limit switch open information provided in this section to check the system operation High limit switch open The furnace has a built in self diagnostic capability If a system problem occurs a fault code Is shown bya red LED e Risse Pressure switch cycle lockout on the control board The control continuously monitors its own operation and the operation of the system If a failure Lockout due to no ignition occurs t
41. ifice Size Pressure in w c 0 4500 ft Orifice Size 7501 0 7500 ft 10 000 ft Manifold Pressure in w c 4501 7500 ft Manifold Supply Line Pressure in w c Pressure 7501 10 000 ft W C Fire Fire Fire Fire 15 34 17 55 LP propane 39 49 100 49 100 49 100 110 130 s f os 5 15 92 49 100 49 100 om o rss 22 5 4s 100 100 Consult local utility for actual heating value Furnace input Input Factor x Nameplate Input NOTE A natural to LP Propane gas changeover kit is necessary to convert this unit Refer to the changeover kit installation instruction for the conversion procedure Table 12 Page 34 of 41 Issue 1034 506471 01 MAINTENANCE A WARNING ELECTRICAL SHOCK FIRE OR EXPLOSION HAZARD Failure to follow the safety warnings exactly could result in dangerous operation serious injury death or property damage Improper servicing could result in dangerous operation serious injury death or property damage Before servicing disconnect all electrical power to furnace When servicing controls label all wires prior to disconnecting Reconnect wires cor
42. igid leg is equipped with a shipping bolt and a flat white plastic washer rather than the rubber mounting grommet used with a flexible mounting leg The bolt 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 Units with 1 2 HP Blower Motor RIGID LEG remove shipping bolt and washer Figure 7 50647 1 01 Issue 1034 Upflow Applications Allow for clearances to combustible materials as indicated on the unit nameplate Minimum clearances for closet or alcove installations are shown in Figure 8 Upflow Application Installation Clearances Top Left Side Right Side Bottom Type of Vent Top 110 25 110 25 Front clearance alcove Installation must be 24 in 610 Maintain a minimum of 24 in 610 mm for front service access I For installation on a combustible floor do not install the furnace directly on carpeting tile or other combustible materials other than wood flooring 1 Left side requires 3 inches if a single wall vent is used on 14 1 2 inch cabinets Figure 8 Page 9 of 41 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 en
43. in Return Air Horizontal Applications Return air must be brought in through the end of a furnace installed in a horizontal application The furnace is equipped with a removable bottom panel to facilitate installation See Figure 11 Page 11 of 41 Horizontal Application Unit installed on Platform Line contact is permissible See the unit nameplate for clearances SERVICE PLATFORM SSS J Figure 14 A WARNING 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 installations with bottom return air 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 The base must provide a stable support and an airtight seal to the furnace Allow absolutely no sagging cracks gaps etc The return and supply air duct systems must never 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 A WARNING The inner blower panel must be securely in place when the blower and burners are operating Gas fumes which could contain carbon monoxide can be drawn into living space resulting in personal inju
44. ion If the make up box is moved to the right side clip the wire ties that bundle the wires together The excess wire must be pulled into the blower compartment Secure the excess wire to the existing harness to protect it from damage INTERIOR MAKE UP BOX INSTALLATION RIGHT SIDE Figure 30 Refer to Figure 40 for schematic wiring diagram and troubleshooting and Figure 41 for field wiring 1 The power supply wiring must meet Class 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 2 Holesare on both sides of the furnace cabinet to facilitate wiring 3 Install a separate properly sized disconnect switch near the furnace so that power can be turned off for servicing Page 25 of 41 Maximum Over Current Protection Amps 07012A12 090812 090B16 090C20 110C20 135D20 Table 10 4 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 5 Complete the wiring connections to the equipment Use the provided unit wiring diagram and the field wiring diagram shown in Figure 41 Use 18 gauge wire or larger that is suitable for Class rating for thermostat connections
45. l not vent properly with the flue transition pointed down in the 6 o clock position The combustion air inducer may be rotated clockwise or counterclockwise by 90 to allow for top or side vent discharge in all applications When the unit is installed the flue transition must be in the 9 o clock 12 o clock or 3 o clock position 50647 1 01 Issue 1034 If necessary reposition the combustion air inducer pressure switch and or make up box as needed per the following steps See Figures 16 through 22 1 Remove the four mounting screws Figure 15 which secure the combustion air inducer pressure switch assembly to the orifice plate Lift the assembly and rotate it 90 clockwise or counter clockwise to either the 3 o clock position or 9 o clock position Resecure with four secrews Gasket should be left in place 2 Usetin snips to cut preferred opening on the cabinet for repositioning the flue outlet Use the cut out piece as a cover plate to patch unused opening on cabinet UPFLOW POSITION Left Side Vent Discharge cover plat TN 1 collector box vent pipe A make up flue transition AIR FLOW Remove make up box assembly 2 screws and cut wire tie to free make up box wires Reinstall make up box on other side of cabinet Resecure make up box wires Either pull excess wires through the blower companrtment and secure using supplied wire tie or coil excess wire and secure to the gas manifold Figure 17
46. lculating free area the blocking effect of louvers grilles or screens must 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 be fixed in the open position interlocked with the OUTLET AIR equipment so that they are opened automatically during equipment operation FURNACE EQUIPMENT IN CONFINED SPACE ALL AIR FROM OUTSIDE Inlet Air from Crawlspace amp Outlet Air to Ventilated Attic SEMINE A i L1 Bae ee ee ee 1D D VENTILATION LOUVERS Each end of attic WATER HEATER NOTE Each air duct opening shall have a free area of at least one square inch per 2 000 Btu 645 mm per 59 kW 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 outdoors each opening shall have a free area of at least 1 square inch per 4 000 Btu 645 per 1 17 kW per hour of the total input rating of all other equipment in the enclosure FURNACE VENTILATION pru UVER For unheated crawl space Figure 6 J L oo NOTE The inlet a
47. learances NOTE For installation on combustible floors the furnace shall not be installed directly on carpeting tile or other combustible material other than wood flooring Installed Locations For installation in a residential garage the furnace must be installed so that the burner s and the ignition source are located no less than 18 inches 457 mm above the floor The furnace must be located or protected to avoid physical damage by vehicles When a furnace is installed in a public garage hangar or other building that has a hazardous atmosphere the furnace must be installed according to recommended good practice requirements and current National Fuel Gas Code 50647 1 01 Temperature Rise NOTE Furnace must be adjusted to obtain 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 its electrical components are protected from water Installed in Combination with a Cooling Coil When this furnace is used with cooling units it shall be installed in parallel with or on the upstream side of cooling units to avoid condensation in the heating compartment See Figure 2 With a parallel flow arrangement a damper or other means to control the flow of air must adequately prevent chilled air from entering the furnace If the damper is manually operated it must be equipped
48. let gas supply pressure is 10 5 w c for natural gas and 13 w c for propane Gas input must never exceed the value shown on the furnace rating plate These units are equipped for rated input at manifold pressures of 1 7 w c 1 stage and 3 5 w c 2 stage for natural gas When these furnaces have been converted for use with 50647 1 01 Issue 1034 propane gas the manifold pressures 4 9 w c 1 stage and 10 0 w c 2 stage To measure inlet or outlet pressure remove plug from desired pressure tap inlet or outlet as shown in Figure 38 and connect a water manometer or gauge to the proper pressure tap GAS VALVE SHOWN IN ON POSITION HIGH FIRE ADJUSTING SCREW under cap INLET PRESSURE TAP ON SIDE MANIFOLD PRESSURE TAP ON SIDE Figure 38 These models have separate adjusting screws 3 32 hex for 1 stage marked LO and 2 stage marked HI The adjusting screws are positioned on either side of the barbed fitting see Figure 38 Turn the adjusting screws clockwise to increase pressure and input counterclockwise to decrease pressure and input The pressure regulator adjustment is sensitive one turn ofthe adjusting screw will result in a relatively large change in manifold pressure To adjust the regulator 1 Sethigh fire 2 stage setting by turning hex adjustment screw to desired rate 2 Setlow fire 1 stage setting by turning hex adjustment screw to desired rate
49. m per 1 000 Btu 29 kW per hour of total input rating of all gas fired equipment in the confined space Each opening must be at least 100 square inches 64516 mm One opening shall be within 12 inches 305 mm of the top of the enclosure and one opening within 12 inches 305 mm of the bottom See Figure 3 Air from Outside If air from outside is brought in for combustion and ventilation the confined space must have two permanent openings One opening shall be within 12 inches 305 mm of the top of the enclosure and one opening within 12 inches 305 mm of the bottom These openings must communicate directly or by ducts with the outdoors or spaces crawl or attic that freely communicate with the outdoors or indirectly through vertical ducts Each opening shall have a minimum free area of 1 square inch 645 mm per 4 000 Btu 1 17 kW per hour of total input rating of all equipment in the en closure oee Figures 4 and 5 When communicating with the outdoors through horizontal ducts each opening shall have a minimum free area of 1 square inch 645 per 2 000 Btu 56 kW per total input rating of all equipment in the enclosure See Figure 6 Page 7 of 41 When ducts used they shall be of the same cross EQUIPMENT IN CONFINED SPACE sectional area as the free area of the openings to which ALL AIR FROM OUTSIDE they connect The minimum dimension of rectangular air ducts shall be no less than 3 inches 75 mm In ca
50. nd outlet air openings shall each have a free area of at least one square inch per 4 000 Btu 645 per 1 17 kW per hour of the total input rating of all equipment in the enclosure Figure 4 EQUIPMENT IN CONFINED SPACE ALL AIR FROM OUTSIDE All Air through Ventilated Attic CHIMNEY OR GAS VENT VENTILATION LOUVERS Each end of attic FURNACE INLET AIR Ends 12 in aril above bottom WATER HEATER NOTE The inlet and outlet air openings shall each have a free area of at least one square inch per 4 000 Btu 645 per 1 17 kW hour of the total input rating of all equipment in the enclosure Figure 5 Page 8 of 41 Issue 1034 506471 01 Setting Equipment A WARNING Do not install the furnace on its front or its back Do not connect the return air ducts to the back of the furnace Doing so will adversely affect the operation of the safety control devices which could result in personal injury or death The gas furnace can be installed as shipped in either the upflow position or the horizontal 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 24 inches 610 mm at unit front The unit must be level NOTE Units with 1 2 hp blower motors are equipped with three flexible legs and one rigid leg See Figure 7 The r
51. ng to the information shown in Table 12 To adjust the manifold pressure refer to previous section Checking and Adjusting Gas Input For installations above 7500 feet call Technical Service at 1 800 515 3501 for assistance For installations above 4500 feet fill in the appropiate information on the furnace label that has the words This furnace was converted Emergency Replacement Motor Operation If the variable speed motor needs to be replaced in an emergency situation such as no heat and an exact replacement motor is not immediately available a standard PSC motor of equivalent frame size voltage rotation and horsepower can be temporarily installed until the correct replacement motor can be obtained Connect the desired speed tap to the EAC terminal and the neutral tap to the neutral terminal on the ignition control refer to the furnace wiring diagram T he ignition control will control the motor s operation including a nominal 20 second on delay with a call for heat and a nominal 180 second off delay when the thermostat is satisfied It will also operate the motor on a call for cooling with no on or off delays Verify that the unit is operating at the desired speed and within the rise range as shown on the unit rating plate The correct replacement motor must be installed as soon as possible to ensure continued satisfactory operation of the furnace MANIFOLD PRESSURE SETTINGS Manifold Or
52. ntenance 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 Page 4 of 41 Issue 1034 A CAUTION As with any mechanical equipment personal injury can result from contact with sharp sheet metal edges Be careful when you handle this equipment Certifications These units are CSA International certified to ANSI Z21 47 In the USA installation of gas furnaces must conform with local building codes In the absence of local codes units must be installed according to the current National Fuel Gas Code ANSI Z223 1 The National Fuel Gas Code is available from the following address American 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 applicable provisions of local building codes This furnace is CSA International certified for installation clearances to combustible material as listed on the unit nameplate and in the tables in Figures 7 and 11 Accessibility and service clearances must take precedence over fire protection c
53. nuous blower See furnace wiring diagram for specific connection information Variable Speed Features This furnace is equipped with a variable speed circulation air blower motor that will deliver a constant airflow within a wide range of external static pressures Other features of this variable speed motor include Soft Start The variable speed motor will slowly ramp up to normal operating speed This minimizes noise and increases comfort by eliminating the initial blasts of air encountered with standard motors Soft Stop At the end of a cooling or heating cycle the variable speed motor will slowly ramp down after a short blower off delay If continuous blower operation has been selected the variable speed motor will slowly ramp down until it reaches the airflow for that mode Passive and Active Dehumidification Passive Dehumidification For situations where humidity control is a problem a dehumidification feature has been built into the variable speed motor Atthe start of each cooling cycle the variable speed motor will run at 82 of the rated airflow for 7 5 minutes After 7 5 minutes has elapsed the motor will increase to 100 of the rated airflow Page 27 of 41 Active Dehumidification To 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
54. ons furnished with it Select a location on an inside wall that is not subject to drafts direct sunshine or other heat sources The initial heat anticipator setting should be equal to the total current draw of the control circuit Low voltage thermostat connections are to be made to the integrated ignition blower control board as indicated on the wiring diagram Single Stage Thermostat Operation A80UH2V and 80G1UH2V Models The automatic heat staging option allows a single stage thermostat to be used with two stage furnace models A80UH2V or 80G1UH2V To activate this option move the jumper pin see Figure 31 to desired setting 5 minutes or 10 minutes The furnace will start on 1st stage heat and stay at 1st stage heat for the duration of the selected time before switching to 2nd stage heat W1 on the control board must be connected to W1 on the thermostat Humidifier Terminals are provided on the integrated ignition blower control board for connection to a 120 volt humidifier The HUM terminal is energized whenever the thermostat calls for heat See the furnace wiring diagram for specific connection information 50647 1 01 Issue 1034 Automatic Heat Staging Jumper Figure 31 Electronic Air Cleaner Terminals are provided on the integrated ignition blower control board for connection of a 120 volt electronic air cleaner The EAC terminal is energized whenever the thermostat calls for heat cooling or conti
55. or front service access I For installations on a combustible floor do not install the furnace directly on carpeting tile or other combustible materials other than wood flooring Figure 12 50647 1 01 Issue 1034 Horizontal Applications The furnace can be installed in horizontal applications Order horizontal suspension kit 51W10 from Allied Air or use equivalent suspension method Allow for clearances to combustible materials as indicated on the unit nameplate Minimum clearances for closet or alcove installations are shown in Figure 12 This furnace may be installed in either an attic or a crawl space Either suspend the furnace from roof rafters or floor joists as shown in Figure 13 or install the furnace on a platform as shown in Figure 14 Typical Horizontal Application Unit Suspended in Attic or Crawlspace metal strap i internal brace typical provided with kit bracket Figure 13 NOTE Heavy gauge perforated sheet metal straps may be used to suspend the unit from roof rafters or ceiling joists When straps are used to 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 dra
56. other sources of ignition to check for gas leaks The furnace must be isolated by closing its individual manual shut off valve and disconnecting from from the gas supply system the during any pressure testing of the gas supply system at pressures less than or equal to 1 2 psig 3 48 kPa 14 inches w c A IMPORTANT When testing pressure of gas lines gas valve must be disconnected and isolated See Figure 28 Gas valves can be damaged if subjected to pressures greater than 1 2 psig 3 48 kPa 14 inches w c MANUAL MAIN SHUT OFF VALVE WILL NOT HOLD NORMAL TEST PRESSURE 1 8 NPT PLUG ISOLATE GAS VALVE FURNACE Figure 28 Electrical ELECTROSTATIC DISCHARGE ESD Precautions and Procedures A CAUTION 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 506471 01 Issue 1034 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 installat
57. pressure switch vent pipe pressure switch make up box collector box Disconnect pressure switch hose from barbed fitting on the pressure make up box 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 plate and reconnect pressure switch hose Resecure pressure seitch wires Either pull excess wires through the blower compartment and secure using supplied wire tie or coil excess Figure 22 wire and secure to the gas manifold Figure 20 Page 14 of 41 Issue 1034 506471 01 These series units are classified as fan assisted Category furnaces when vertically vented according to the latest edition of National Fuel Gas Code NFPA 54 ANSI Z223 1 in the USA Afan assisted Category furnace is an appliance equipped with an integral mechanical means to either draw or force combustion products through the combustion chamber and or heat exchanger This unit is not approved for use with horizontal venting NOTE Use these instructions as a guide They do not supersede local codes This furnace must be vented according to all local codes these installation instructions and the provided venting tables in these instructions The venting tables in this manual were extracted from the National Fuel Gas Code 54 ANSI 2223 1 and provided as a guide for proper vent installation Proper application termination cons
58. r parts are available from the local distributor When ordering parts include the complete furnace model number and serial number which are printed on the rating plate located on the furnace Control Group Transformer High limit control Auxiliary limit Gas valve Integrated ignition blower control board Flame sensor Pressure switches 1 stage and 2 stage Blower door interlock switch Combustion blower assembly Flame rollout protector switch Hot surface igniter Input choke 50647 1 01 Heat Exchanger Group Heat exchanger Blower Group Blower housing assembly Blower wheel Blower mount Blower motor Blower motor mount Burner Group Gas manifold Burner orifices Burners Issue 1034 Page 37 of 41 Wiring Diagram ae GROUND 2 INTERLOCK F HE INDUCED FLAME IGNITER DRAFT PRESSURE PRESSURE SWITCH ROLLOUT SENSOR BLOWER SWITCH SWITCH DRAIN SWITCH ROLLOUT HIGH LOW _ IFUSED IFUSED SWITCH GAS VALVE o os M CHI 2 WHT BLK 2 PIN fr PED zu co LIMIT mee CONNECTOR NN E HOT NEUTRAL 120 1 60 51131211 1 13 211 YEL YEL BLK WHT SWITCH WHT RED BLK Hi a 8 eh
59. rectly Verify proper operation after servicing 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 air filters clean as dirty filters can restrict airflow and the blower and induced draft motors depend upon sufficient air flowing across and through them to keep from overheating Burners Light the burners and allow to operate for a few minutes to establish normal burning conditions Observe the burner flames Compare this observation to Figure 39 to determine if proper flame adjustment is present Flame should be predominantly blue in color and strong in appearance Check that all burners are lit and that the flame does not impinge on the sides of the heat exchanger Distorted flame or yellow tipping of the natural gas burner flame or long yellow tips on propane may be caused by lint accumulation or dirt inside the burner or burner ports at the air inlet between the burner and manifold pipe or obstructions over the burner orifice Use a soft brush or vacuum to clean the affected areas 50647 1 01 Issue 1034 Typical Flame Appearance Heat Exchanger C Gas Burner Manifold Flame Blue Only Figure 39 Lubr
60. ry or death Filters This unit is not equipped with a filter or rack Afield provided high velocity filter is required for the unit to operate properly Table 1 lists recommended filter sizes A filter must be in place any time the unit is operating Page 12 of 41 Issue 1034 Fumace Cabinet Width 14 1 2 16 X 25 X 1 14 X 25 X 1 Table 1 Duct System Use industry approved standards such as those published by Air Conditioning Contractors of America or American Society of Heating Refrigerating and Air Conditioning Engineers to size and install the supply and return air duct system This will result in a quiet and low static system that has uniform air distribution NOTE not operate the furnace in the heating mode with an external static pressure that exceeds 0 8 inches w c Higher external static pressures may cause erratic limit operation 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 when the furnace is operating and it must not allow leaks into the supply air duct system Return Air Plenum NOTE Return air must not be drawn from a room where this furnace or any other gas fueled appliance
61. se of construction Very low return air temperature harmful vapors and operation of the unit with clogged or misplaced filters will damage the unit Units may be used for heating of buildings or structures under construction if the following conditions are met e heventsystem must be permanently installed per these installation instructions e Aroom thermostat must control the furnace The use of fixed jumpers that will provide continuous heating is not allowed e The return air duct must be provided and sealed to the furnace e Return air temperature range between 60 F 16 and 80 F 27 C must be maintained e Air filters must be installed in the system and must be maintained during construction e Air filters must be replaced upon construction completion e The input rate and temperature rise must be set per the furnace rating plate e One hundred percent 100 outdoor air must be provided for combustion air requirements during construc tion Temporary ducting may supply outdoor air to the furnace Do not connect duct directly to the furnace Size the temporary duct following these instructions in section for Combustion Dilution and Ventilation Air in a confined space with air from outside e The furnace heat exchanger components duct system air filters and evaporator coils must be thoroughly cleaned following final construction clean up e Allfurnace operating conditions including ignition input ra
62. sure that the furnace operates properly and safely The furnace is equipped with a removable bottom panel to facilitate installation Markings are provided on both sides of the furnace cabinet for installations that require side return air Cut the furnace cabinet at the maximum dimensions shown on page 2 NOTE 20C and 20D units that require air volumes over 1800 cfm 850 L s must have one of the following 1 Single side return air with transition to accommodate 20 x 25 x 1 in 508 x 635 x 25 mm cleanable air filter Required to maintain proper air velocity See Figure 9 2 Single side return air with optional return airbase See Figure 10 3 Bottom return air 4 Return air from both sides o Bottom and one side return air Optional Return Air Base Single Side Return Air with transition and filter 20 X25 X1 580 mm X 635 mm X 25 mm Cleanable Filter __ Return Air Plenum 1 FLOW Transition Figure 9 Upflow Applications Only For use with A B C and D cabinets FURNACE IS USED WITHOUT INDOOR AIR QUALITY RETURN AIR CABINET PLENUM 1 FLOW MUST EO um ueri Ed COVER BOTH UNIT AND RETURN AIR BASE OPENINGS OPTIONAL 4 1 2 368 A Width 65W75 17 1 2 446 B Width 68W62 Aa mos 21 533 C Width 68W63 24 1 2 622 D Width 68W64 FRONT VIEW NOTE Optional Side Return Air Filter Kits are not for use with Return Air
63. t has jurisdiction black iron pipe shall be the gas valve to facilitate test gauge connection See installed at the gas valve and extend outside the furnace Figure 38 cabinet The flexible connector can then be added 6 between the black iron pipe and the gas supply line A CAUTION In some localities codes may require the installation of a manual main shut off valve and union furnished by the installer external to the unit The union must be of Gas Supply the ground joint type 1 This unit is shipped standard for left or right side installation of gas piping or top entry in horizontal IMPORTANT applica tions Connect the gas supply to the piping assembly Compounds used on threaded joints of gas piping must s epp PII atts be resistant to the actions of liquified petroleum gases such as length of run number of fittings and furnace rating to avoid excessive pressure drop Table 9 lists recommended pipe sizes for typical applications NOTE f emergency shutoff is necessary shut off the main The gas piping must not run in or through air ducts manual gas valve and disconnect main power to the furnace clothes chutes gas vents or chimneys dumb waiters The installer should properly label these devices or elevator shafts Gas Pipe Capacity ft hr m hr Nominal Iron Pipe Internal Length of Pipe feet m
64. t 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 capacity The flow area of the vertical vent however shall not exceed 7 times the flow area of the listed appliance categorized vent area drafthood outlet area or flue collar area unless designed according to approved engineering methods 5 Multiple appliance vents The flow area of the largest section of vertical vent or chimney shall not exceed 7 times the smallest listed appliance categorized vent area drafthood outlet area or flue collar area unless designed according to approved engineering methods 50647 1 01 generated using maximum horizontal vent connector length of 1 1 2 feet 46 m for each inch 25 of connector diameter as follows 16 6 The entire length of single wall metal vent connector 13 When the vent connector used for Category appliances shall be readily accessible for inspection cleaning and must be located in or pass through a crawl space attic replacement or other areas which may be cold that portion of the 7 Single appliance venting configurations with zero lateral vent connector shall be constructed of listed doublewall lengths Tables 3 and 4
65. te temperature rise and venting must be verified according to these installation instructions Page 5 of 41 These instructions are intended as 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 e Place the furnace as close to the center of the air distribution system as possible The furnace should also be located close to the chimney or vent termination point e Donotinstall the furnace where drafts might blow directly into it This could cause improper combustion e block the furnace combustion air openings with clothing boxes doors etc Air is needed for proper combustion and safe unit operation e When the furnace is installed in an attic or other insulated space keep insulation away from the furnace NOTE 7he Commonwealth of Massachusetts stipulates these additional requirements e Gas furnaces shall be installed by a licensed plumber or fitter only The gas cock must be T handle type e When a furnace is installed in an attic the passageway to and service area surrounding the equipment shall be floored A WARNING Product Contains Fiberglass Wool Disturbing the insulation in this product during installation maintenance or repair will expose you to fib
66. the manufacturer s instructions Joints between sections of single wall connector piping shall be fastened by screws or other approved means 506471 01 Issue 1034 Page 17 of 41 Capacity of Type B Double Vents with Type B Double Wall Connectors Serving a Single Category l Appliance Vent and Connector Diameter D inches mem amn inch Appliance Input Rating in Thousands of Btu Per Hour __ 7 o i 375 _ z 77 gt 22 _ __ s 27 _ 8 25 3 4 5 5 23 2 L8 5 26 45 __2 s e we 18 2 23 __ 2 q 42 m 53 25 _ 39 Low pow _ 9 v we v 47 _ o2 72 8 m me 7 2 __ 3 v s ma 4 t 5 28 _ o9 70 5 76 2 __ a o 37 5 _ L2 5 tme 2e 22 3 5 2 __ gt m 5 25 9 o 5 me 6e 5 5 4e 2 e 5 7 9 57 qo 55 __ gt o 5 w Me 7 2 37 __5 2 qs 3 367 __ 2 e 5 5 46 5 27 7 37 2 5 e 6 26 32 L0 57 __ gt 9 8 e te j 42
67. to prevent operation of either the heating or the cooling unit unless it is in the full HEAT or COOL setting See Figure 2 Heating Unit Installed Parallel to Air Handler Unit Dampers open during heating operation only 2 Gas Unit T iL Air Handler Unit aS Dampers open during cooling operation only Heating Unit Installed Upstream of Cooling Unit Evaporator Figure 2 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 NFPANo 70 The National Electric Code ANSI NFPA No 70 is available from the following address National Fire Protection Association 1 Battery March Park Quincy MA 02269 NOTE This furnace is designed for a minimum continuous return air temperature of 60 F 16 C or an intermittent operation down to 55 F 13 C dry bulb for cases where a night setback thermostat is used Return air temperature must not exceed 85 29 dry bulb 50647 1 01 Issue 1034 This furnace may be installed in alcoves closets attics basements garages and utility rooms in the upflow or horizontal position This furnace design has not been certified for installation in mobile homes recreational vehicles or outdoors Use of Furnace as a Construction Heater Allied Air does not recommended the use of these units as a construction heater during any pha
68. truction and location of vents must conform to local codes having jurisdiction In the absence of local codes the NFGC serves as the defining document Refer to the tables and the venting information contained in these instructions to properly size and install the venting system A IMPORTANT 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 23 The warning sticker is provided in the bag assembly Order kit 66W04 for additional stickers A WARNING Asphyxiation hazard The exhaust vent for this furnace must be securely connected to the furnace flue transitiion at all times Vent Connection DISCONNECTED VENT WARNING VENT PIPE min 6 length FLUE TRANSITION COLLAR Figure 23 50647 1 01 Issue 1034 Use self drilling sheet metal screws or a mechanical fastener to firmly secure the vent pipe to the round collar of the flue transition If self drilling screws are used to attach the vent pipe it is recommended that three be used Drive one self drilling screw through the front and one through each side of the vent pipe and collar See Figure 23 Install the first vent connector elbow at a minimum of six inches 152 mm from the furnace vent outlet See Figure 23 Venting Using a Masonry Chimney The following additional requirements apply when a lined masonry chimney is used to
69. ve table size diameters over the size of the draft hood outlet or flue collar outlet 9 If the common vertical vent is offset the maximum 20 Do not install a manual damper barometric draft common vent capacity listed in the common venting regulator or flue restrictor between the furnace and the tables should be reduced by 20 the equivalent of two chimney 90 elbows 0 80 x maximum common vent capacity 21 When connecting this appliance to an existing dedicated The horizontal length of the offset shall not exceed or common venting system you must inspect the venting 1 1 2 feet 46 m for each inch 25 mm of common system s general condition and look for signs of vent diameter corrosion The existing vent pipe size must conform to 10 The vent pipe should be as short as possible with the these instructions and the provided venting tables If least number of elbows and angles required to complete the existing venting system does not meet these the job Route the vent connector to the vent using the requirements it must be resized shortest possible route 11 Avent connector shall be supported without any dips or sags and shall slope a minimum of 1 4 inch 6 4 mm per linear foot 305 mm of connector back toward the appliance 12 Vent connectors shall be firmly attached to the furnace flue collar by self drilling screws or other approved means except vent connectors of listed type B vent material which shall be assembled according to
70. vent this furnace Masonry chimneys used to vent Category central furnaces must be either tile lined or lined with a listed metal lining system or dedicated gas vent Unlined masonry chimneys are prohibited See Figures 24 and 25 for common venting A chimney with one or more sides exposed to the outside of the structure is considered to be an exterior chimney An exterior masonry chimney that is not tile lined must be lined with B1 vent or a listed insulated flexible metal vent An exterior tile lined chimney that is sealed and capped may be lined with a listed uninsulated flexible metal vent If the existing chimney will not accommodate a listed metal liner either the chimney must be rebuilt to accommodate one of these liners or an alternate approved venting method must be found Insulation for the flexible vent pipe must be an encapsulated fiberglass sleeve recommended by the flexible vent pipe manufacturer See Figure 24 Common Venting Using Metal Lined Masonry Chimney MAX LENGTH SEE NOTE 1 DIE m AS mmimum SHORT AS PRACTICAL EXTERIOR CHIMNEY WITH METAL VENT CONNECTOR 4 in 102 mm minimum APPLICANCE PERMANENTLY SEALED FIREPLACE OPENING NOTE 1 Refer to the provided venting tables for installations Refer to the capacity requirements shown in the provided venting tables Figure 24 Page 15 of 41 Common Venting Using Tile Lined Interior Masonry Chimney and Combined Vent Connector MINMUM

Allied Air Enterprises 80G1UH2V Furnace User Manual

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