Lennox 030-08 Installation Instructions Manual Download

Page: 1 / 60

507581-04

Page 1 of 60

Issue 2128

This manual must be left with the homeowner for future reference.

INSTALLATION INSTRUCTIONS

A96UH2E

Warm Air Gas Furnace

Upflow/Horizontal Left Air Discharge

Direct Vent & Non-Direct Vent

This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in manuals, be alert to

the potential for personal injury or death.

Improper installation, adjustment, alteration, service

or maintenance can cause property damage, personal

injury or loss of life. Installation and service must be

performed by a licensed professional installer (or

equivalent), service agency or the gas supplier.

WARNING

As with any mechanical equipment, personal injury can

result from contact with sharp sheet metal edges. Be

careful when you handle this equipment.

CAUTION

Save these instructions for future reference

(P) 507581-04

*P507581-04*

Manufactured By

Allied Air Enterprises LLC

A Lennox International, Inc. Company

215 Metropolitan Drive

West Columbia, SC 29170

Table of Contents

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

Parts Arrangement.........................................................

A96UH2E Gas Furnace .................................................4

Shipping and Packing List .............................................4

Safety Information .........................................................4

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

Combustion, Dilution & Ventilation Air ...........................7

Installation ...................................................................

Filters ...........................................................................14

Duct System ................................................................14

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

Condensate Piping ......................................................34

Gas Piping

...................................................................38

Electrical ......................................................................41

Blower Performance ....................................................50

Unit Start-Up ................................................................53

Other Unit Adjustments................................................56

Service.........................................................................56

Planned Service ..........................................................58

Repair Parts List ..........................................................59

Summary of Contents for 030-08

Page 1: ...quivalent service agency or the gas supplier WARNING As with any mechanical equipment personal injury can result from contact with sharp sheet metal edges Be careful when you handle this equipment CAU...

Page 2: ...el COMBUSTION AIR INTAKE 2 51 Either Side 2 51 CONDENSATE TRAP CONNECTION Either Side 1 NOTE 20 C D 5 Ton size units installed in upflow applications that require air volumes of 1800 cfm 850 L s or gr...

Page 3: ...507581 04 Page 3 of 60 Issue 2128 Figure 1 Parts Arrangement...

Page 4: ...ag assembly containing the following 1 Snap bushing 1 Snap Plug 1 Wire tie 1 Condensate trap 1 Condensate trap cap 1 Condensate trap clamp 1 2 Diameter debris screen 1 3 4 Threaded street elbow Check...

Page 5: ...obtain a temperature rise within the range specified on the unit nameplate Failure to do so may cause erratic limit operation and premature heat exchanger failure This furnace must be installed so th...

Page 6: ...LURE TO FOLLOW THE ABOVE INSTALLATION INSTRUCTIONS FAILURE TO FOLLOW THE ABOVE INSTALLATION INSTRUCTIONS VOIDS THE MANUFACTURER S EQUIPMENT LIMITED WARRANTY ALLIED AIR DISCLAIMS ALL LIABILITY IN CONNE...

Page 7: ...ion from the National Fuel Gas Code ANSI Z223 1 NFPA 54 This reprinted material is not the complete and official position of ANSI on the referenced subject which is represented only by the standard in...

Page 8: ...e within 12 inches 305 mm of the top of the enclosure and one opening within 12 inches 305 mm of the bottom See Figure 5 Figure 5 Equipment in Confined Space All Air From Inside Air from Outside If ai...

Page 9: ...in Confined Space Inlet Air from Ventilated Crawlspace and Outlet Air to Outside NOTE The inlet and outlet air openings shall each have a free area of at least one square inch per 4 000 Btu 645mm2per...

Page 10: ...furnace is placed into operation After the bolt and washer have been removed the rigid leg will not touch the blower housing Figure 11 Units with 1 2 HP Blower Motor Upflow Applications The gas furna...

Page 11: ...in 610 mm Maintain a minimum of 24 in 610 mm for front service access Allow proper clearances to accommodate condensate trap installation For installations on a combustible floor do not install the f...

Page 12: ...nsions 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 ai...

Page 13: ...ust piping installation Cooling coils and supply and return air plenums must be supported separately NOTE When the furnace is installed on a platform or with the horizontal suspension kit in a crawl s...

Page 14: ...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 fiberglas...

Page 15: ...th cement forcefully insert end of pipe into socket until it bottoms out Turn PVC pipe 1 4 turn during assembly but not after pipe is fully inserted to distribute cement evenly Do not turn ABS or cell...

Page 16: ...n the Vent Piping Guidelines section Model Vent Pipe Dia in STANDARD CONCENTRIC Outdoor Exhaust Accelerator Dia X Length Outdoor Exhaust Accelerator Dia X Length Flush Mount Kit 1 1 2 Concentric Kit 2...

Page 17: ...her gas burning appliances to their previous mode of operation 7 If a venting problem is found during any of the preceding tests the common venting system must be modified to correct the problem Resiz...

Page 18: ...ems which include multiple pipe sizes NOTE All horizontal runs of exhaust pipe must slope back toward unit A minimum of 1 4 6 mm drop for each 12 305 mm of horizontal run is mandatory for drainage NOT...

Page 19: ...9 36 21 70 70 48 13 93 92 73 73 10 31 16 65 65 43 8 89 87 68 68 Standard Termination at Elevation 4 501 10 000 ft Number of 90 Elbows Used 1 1 2 Pipe 2 Pipe 2 1 2 Pipe 3 Pipe Model Model Model Model...

Page 20: ...74 9 28 13 60 60 44 9 76 76 69 69 10 23 8 55 55 39 n a 71 71 64 64 Concentric Termination Elevation 4 501 10 000 ft Number of 90 Elbows Used 1 1 2 Pipe 2 Pipe 2 1 2 Pipe 3 Pipe Model Model Model Model...

Page 21: ...5 65 43 8 83 82 63 63 8 31 16 60 60 38 3 78 77 58 58 9 26 11 55 55 33 n a 73 72 53 53 10 21 6 50 50 28 68 67 48 48 Standard Termination Elevation 4 501 10 000 ft Number of 90 Elbows Used 1 1 2 Pipe 2...

Page 22: ...TRANSITION 1 1 2 2 6 MINIMUM Figure 26 TYPICAL EXHAUST PIPE CONNECTIONS IN HORIZONTAL DIRECT OR NON DIRECT VENT APPLICATIONS RIGHT HAND DISCHARGE SHOWN SIDE VIEW 45 MAX 45 MAX 2 2 2 2 or 2 12 max EXH...

Page 23: ...nstalled in either direct vent or non direct vent applications In non direct vent applications when intake air will be drawn into the furnace from the surrounding space the indoor air quality must be...

Page 24: ...ng or a platform Ensure that the intake air inlet will not be obstructed by loose insulation or other items that may clog the debris screen 2 If intake air is drawn from a ventilated attic Figure 31 o...

Page 25: ...2 30 30 2 1 2 in 10 N A 16 N A 26 N A 37 N A 36 N A 3 in 6 6 12 12 21 21 30 30 29 29 20 to 1 7 to 17 1 1 2 in N A N A 12 N A 20 N A N A N A N A N A 2 in 6 4 11 9 19 17 28 25 27 24 2 1 2 in N A N A 7 N...

Page 26: ...ated within 6 feet 1 8 m of a condensing unit because the condensate can damage the painted coating NOTE See Table 6 for maximum allowed exhaust pipe length without insulation in unconditioned space d...

Page 27: ...thin a height 15 feet 4 5m above the meter regulator assembly 3 feet 9m 6 inches 152mm for appliances 10 000 pliances 10 000 Btuh 3kw and 50 000 pliances 50 000 Btuh 15kw 6 inches 152mm for appliances...

Page 28: ...exhaust piping at the point where it exits the structure to improve the velocity of exhaust away from the intake piping See Table 7 Table 7 Exhaust Pipe Termination Size Reduction Model Exhaust Pipe S...

Page 29: ...nished FIELD PROVIDED REDUCER MAY BE REQUIRED TO ADAPT DIFFERENT VENT PIPE SIZE TO TERMINATION EXHAUST VENT 1 1 2 38mm accelerator provided on 71M80 44W92 kits for 045 and 070 models EXHAUST VENT Figu...

Page 30: ...within a height 15 feet 4 5m above the meter regulator assembly 3 feet 9m 6 inches 152mm for appliances 10 000 pliances 10 000 Btuh 3kw and 50 000 pliances 50 000 Btuh 15kw 6 inches 152mm for applianc...

Page 31: ...ce See the following figures Details of Exhaust Piping Terminations for Non Direct Vent Applications Exhaust pipes may be routed either horizontally through an outside wall or vertically through the r...

Page 32: ...haust from Furnace To Termination Kit 51W18 is shown Figure 49 Crawl Space Vent Pipe Drain Trap Assembled Incorrectly Figure 50 Upflow or Downflow Furnace with Exhaust through Crawl Space KIT 51W18 US...

Page 33: ...nce above grade or average snow accumulation B Horizontal separation between intake and exhaust C Minimum from end of exhaust to inlet of intake D Exhaust pipe length E Wall support distance from top...

Page 34: ...in Figure 59 Route the condensate line to an open drain Condensate line must maintain a 1 4 downward slope from the furnace to the drain Do not use copper tubing or existing copper condensate lines fo...

Page 35: ...trap Piping from furnace must slope down a minimum of 1 4 per ft toward trap Figure 54 Unit with Evaporator Coil When combining the furnace and evaporator coil drains together the A C condensate drain...

Page 36: ...wn a minimum of 1 4 per ft toward trap Figure 55 Evaporator Coil Using a Common Drain Unit shown in horizontal right hand discharge position Piping from furnace must slope down a minimum of 1 4 per ft...

Page 37: ...nished Drain Assembly for 3 4 inch Drain Pipe Condensate Drain Connection In Unit Condensate Drain Connection In Unit Vent To Drain Condensate Drain Connection In Unit Optional Condensate Drain Connec...

Page 38: ...or condensate 5 A 1 8 N P T plugged tap or pressure post is located on the gas valve to facilitate test gauge connection See Figure 60 6 In some localities codes may require installation of a manual m...

Page 39: ...g Standard DRIP LEG MANUAL MAIN SHUT OFF VALVE Gas Valve Figure 62 Gas Piping Horizontal Configuration Horizontal Applications Possible Gas Piping Configurations NOTE BLACK IRON PIPE ONLY TO BE ROUTED...

Page 40: ...16 42 530 15 01 490 13 87 460 13 03 430 12 18 400 11 33 1 1 2 38 1 1 610 40 894 2100 59 46 460 41 34 1180 33 41 990 28 03 900 25 48 810 22 94 750 21 24 690 19 54 650 18 41 620 17 56 2 50 8 2 067 52 50...

Page 41: ...ace cabinet to facilitate wiring 3 Install a separate properly sized disconnect switch near the furnace so that power can be turned off for servicing Table 9 Model Maximum Over Current Protection Amps...

Page 42: ...of electrical shock Disconnect electrical power at the circuit breaker or service panel before making electrical connections Failure to disconnect power supplies can result in property damage persona...

Page 43: ...RMOSTAT LO HEAT 24VAC G MANUAL FAN FROM THERMOSTAT PAR C THERMOSTAT SIGNAL GROUND CONNECTED TO TRANSFORMER GRD TR CHASSIS GROUND GRD PAR COMMON 24VAC Y1 THERMOSTAT 1ST STAGE COOL SIGNAL 1 4 QUICK CONN...

Page 44: ...ated If the switch is toggled to the ON position it will provide a 12 minute delay before second stage heat is initiated This switch is only activated when the thermostat selector jumper is positioned...

Page 45: ...stage heat ON delay OFF 7 minutes ON 12 minutes ON CUT ON BOARD LINK W915 2 STAGE COMPR DEHUM S1 T STAT FURNACE TERM STRIP OUTDOOR UNIT 1 Heat 2 Cool with t stat with humidity control NOTE Use DIP swi...

Page 46: ...CUT ON BOARD LINK W914 DEHUM S1 T STAT FURNACE TERM STRIP OUTDOOR UNIT 2 Heat 1 Cool with t stat with humidity control OFF CUT ON BOARD LINK W914 DEHUM S1 T STAT FURNACE TERM STRIP OUTDOOR UNIT Not r...

Page 47: ...t w bilities Capable of 2 stage gas heat control OFF CUT ON BOARD LINK W951 HEAT PUMP CUT ON BOARD LINK W915 2 STAGE COMPR DEHUM FURNACE TERM STRIP HEAT PUMP L7724U T STAT dual fuel capa dual fuel cap...

Page 48: ...ties Capable of 2 stage gas heat midification OFF CUT ON BOARD LINK W914 DEHUM CUT ON BOARD LINK W951 HEAT PUMP CUT ON BOARD LINK W915 2 STAGE COMPR L7742U T STAT FURNACE TERM STRIP HEAT PUMP 67M41 H...

Page 49: ...507581 04 Page 49 of 60 Issue 2128 Figure 66...

Page 50: ...7 0 70 765 181 650 150 550 124 385 90 180 51 0 80 715 187 615 159 500 127 325 94 135 52 Blower Performance A96UH2E045B12 Performance Less Filter External Static Pressure in w g Air Volume Watts at Var...

Page 51: ...5 705 150 640 140 0 70 1145 380 1070 310 960 255 670 160 585 145 0 80 N A N A 1035 320 925 265 610 165 550 155 A96UH2E090C16 Performance Less Filter External Static Pressure in w g Air Volume Watts at...

Page 52: ...1765 335 1635 280 1435 200 2185 655 1915 440 1745 340 1620 275 1430 195 0 10 2170 660 1920 460 1715 350 1595 290 1380 205 2160 660 1880 460 1705 345 1570 285 1380 205 0 20 2130 680 1865 475 1670 370...

Page 53: ...not attempt to manually light burners on this furnace Each time the thermostat calls for heat the burners will automatically light The ignitor does not get hot when there is no call for heat on these...

Page 54: ...e unit 11 Set the thermostat to desired setting NOTE When unit is initially started steps 1 through 11 may need to be repeated to purge air from gas line 12 If the appliance will not operate follow th...

Page 55: ...5 3 1 1 7 3 5 4 5 13 0 LP Propane 4 5 10 0 4 2 9 4 4 0 9 1 3 9 8 9 4 5 10 0 11 0 13 0 NOTE A natural to L P propane gas changeover kit is necessary to convert this unit Refer to the changeover kit ins...

Page 56: ...ame Rollout Switches Two These manually reset switches are located on the front of the burner box Pressure Switch The pressure switch is located in the heating compartment on the cold end header box T...

Page 57: ...combustion air pressure tubing from cold end header collector box 15 Mark and remove wires from pressure switch Remove pressure switch Keep tubing attached to pressure switch 16 Remove electrical junc...

Page 58: ...ng screws Burners are self aligning to center of clam shells 40 Reconnect gas supply line to gas valve 41 Reconnect flame rollout switch wires 42 Reconnect sensor wire and reconnect 2 pin plug from ig...

Page 59: ...equivalent service agency or gas supplier Cabinet Parts Upper Access Panel Blower Access Panel Top Cap Control Panel Parts Transformer Integrated Control Board Door Interlock Switch Blower Parts Blowe...

Page 60: ...imum height of eight 8 feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment The sign shall read in print size no less...

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