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Lennox EL195UH040NE36B, Installation Instructions And Use

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Lennox EL195UH040NE36B Installation Instructions And Use Download Page 14

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Duct System and Proper Installation

Figure 20   

Pipe & Fittings Specifications

All pipe, fittings, primer and solvent cement must conform 

with American National Standard Institute and the Ameri-

can Society for Testing and Materials (ANSI/ASTM) stan-

dards. The  solvent  shall  be  free  flowing  and  contain  no 

lumps, undissolved particles or any foreign matter that 

adversely affects the joint strength or chemical resistance 

of  the cement. The cement shall show no gelation, strati-

fication, or separation that cannot be removed by stirring. 

Refer to the table 2 below for approved piping and fitting 

materials.

 CAUTION

Solvent cements for plastic pipe are flammable liquids 

and should be kept away from all sources of ignition. 

Do not use excessive amounts of solvent cement when 

making joints. Good ventilation should be maintained to 

reduce fire hazard and to minimize breathing of solvent 

vapors. Avoid contact of cement with skin and eyes.

 IMPORTANT

EL195UHNE exhaust and intake connections are made 

of PVC. Use PVC primer and solvent cement when 

using PVC vent pipe. When using ABS vent pipe, use 

transitional solvent cement to make connections to the 

PVC fittings in the unit.

TABLE 2 

PIPING AND FITTINGS SPECIFICATIONS

Schedule 40 PVC (Pipe)

D1785

Schedule 40 PVC (Cellular Core Pipe)

F891

Schedule 40 PVC (Fittings)

D2466

Schedule 40 CPVC (Pipe)

F441

Schedule 40 CPVC (Fittings)

F438

SDR-21 PVC or SDR-26 PVC (Pipe)

D2241

SDR-21 CPVC or SDR-26 CPVC (Pipe)

F442

Schedule 40 ABS Cellular Core DWV (Pipe)

F628

Schedule 40 ABS (Pipe)

D1527

Schedule 40 ABS (Fittings)

D2468

ABS-DWV (Drain Waste & Vent) (Pipe & 

Fittings)

D2661

PVC-DWV (Drain Waste & Vent) Pipe & 

Fittings)

D2665

PRIMER & SOLVENT CEMENT

ASTM 

SPECIFICATION

PVC & CPVC Primer

F656

PVC Solvent Cement

D2564

CPVC Solvent Cement

F493

ABS Solvent Cement

D2235

PVC/CPVC/ABS All Purpose Cement For 

Fittings & Pipe of the same material

D2564, D2235, F493 

ABS to PVC or CPVC Transition Solvent 

Cement

D3188

PVC & ABS & NORYL Transition Solvent 

Cement WELD-ON 4052

CANADA PIPE & FITTING & SOLVENT
CEMENT

MARKING

PVC & CPVC Pipe and Fittings

ULCS636

PVC & CPVC Solvent Cement
ABS to PVC or CPVC Transition Cement
POLYPROPYLENE VENTING SYSTEM
PolyPro® by Duravent
InnoFlue® by Centrotherm

Summary of Contents for EL195UH040NE36B

Page 1: ...ice must be performed by a licensed professional HVAC installer or equivalent service agency or the gas supplier 2018 Lennox Industries Inc Dallas Texas USA ELITE SERIES GAS FURNACE UPFLOW HORIZONTAL AIR DISCHARGE Contents Unit Dimensions inches mm 2 EL195UHNE Gas Furnace 3 Shipping and Packing List 3 Safety Information 3 Use of Furnace as Construction Heater 4 General 5 Combustion Dilution Ventil...

Page 2: ... 1 2 38 Front Panel COMBUSTION AIR INTAKE 1 7 8 48 CONDENSATE TRAP CONNECTION Either Side INTAKE AIR 2 1 4 57 2 7 8 73 6 5 8 168 Not Used 2 Optional Side Return Air Filter Kit is not for use with the Optional Return Air Base 1 NOTE 60C size units that require air volumes over 1800 cfm must have one of the following 1 Single side return air and Optional Return Air Base with transition that must acc...

Page 3: ...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 equipment for shipping damage If you find any damage immediately contact the last carrier The following items may also be ordered separately 1 Thermostat 1 Return air base kit 1 Horizontal suspension kit Safety Information WARNING Improper installation adjust...

Page 4: ...hen installed this furnace must be electrically grounded according to local codes In addition in the United States installation must conform with the current National Elec tric Code ANSI NFPA No 70 The National Electric Code ANSI NFPA No 70 is available from the following ad dress National Fire Protection Association 1 Battery March Park Quincy MA 02269 In Canada all electrical wiring and groundin...

Page 5: ... in areas normally subject to freezing temperatures 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...

Page 6: ...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 plat form or at the return air duct connection can cause a po tentially dangero...

Page 7: ...ve crawl space floor Coupling or 3 in to 2 in Transition Field Provided Figure 7 If air from outside is brought in for combustion and ventila tion the confined space must have two permanent open ings 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 communi cate directly or by ducts with the outdoors o...

Page 8: ...at white plastic wash er rather than the rubber mounting grommet used with a flexible mounting leg See figure 10 The bolt and washer must be removed before the furnace is placed into oper ation After the bolt and washer have been removed the rigid leg will not touch the blower housing RIGID LEG remove shipping bolt and washe Units with 1 2 or 3 4 HP Blower Motor Figure 10 Installation Setting Equi...

Page 9: ...NT VIEW AIR FLOW END VIEW UNIT FRONT 1 2 max Unit must be level side to side Unit may be positioned from level to 1 2 toward the front to aid in draining FRONT VIEW SIDE VIEW 1 2 max AIR FLOW UNIT FRONT SIDE VIEW UNIT FRONT UPFLOW APPLICATION Figure 11 ...

Page 10: ...per clearances to accommodate condensate trap 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 Return Air Guidelines 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 retu...

Page 11: ...ches is preferred FRONT VIEW 1 Unit side return air Opening SIDE VIEW 3 1 4 83 1 23 584 Overall Maximum 584 23 3 4 19 1 22 7 16 570 Overall Maximum SIDE RETURN AIR OPENINGS Either Side 5 5 8 143 1 Minimum 11 279 2 Maximum 14 356 683 26 7 8 7 1 4 184 FURNACE FRONT AIR FLOW IF BASE IS USED WITHOUT IAQ CABINET A SINGLE RETURN AIR PLENUM MUST COVER BOTH UNIT AND RETURN AIR BASE OPENINGS INDOOR AIR QUA...

Page 12: ...e 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 sup ported separately HORIZONTAL SUSPENSION KIT Bracket typical Metal Strap typical Air Flow Internal Brace provided with kit Figure 18 NOTE When the furnace is installed on a platform or with the horizontal suspension kit in a crawlspace...

Page 13: ...and return duct installation Refer to ACCA Manual D This will result in a quiet and low static system that has uniform air distribution NOTE This furnace is not certified for operation in heat ing mode indoor blower operating at selected heating speed with an external static pressure which exceeds 0 5 inches w c Operation at these conditions may result in improper limit operation Supply Air Plenum...

Page 14: ... exhaust and intake connections are made of PVC Use PVC primer and solvent cement when using PVC vent pipe When using ABS vent pipe use transitional solvent cement to make connections to the PVC fittings in the unit TABLE 2 PIPING AND FITTINGS SPECIFICATIONS Schedule 40 PVC Pipe D1785 Schedule 40 PVC Cellular Core Pipe F891 Schedule 40 PVC Fittings D2466 Schedule 40 CPVC Pipe F441 Schedule 40 CPVC...

Page 15: ... figure 23 TABLE 3 OUTDOOR TERMINATION USAGE Input Size Vent Pipe Dia in STANDARD CONCENTRIC Flush Mount Kit Wall Kit Wall Ring Kit Field Fabricated 1 1 2 inch 2 inch 3 inch 2 inch 3 inch 2 inch 71M80 US 4 44W92 CA 69M29 US 4 44W92 CA 60L46 US 4 44W93 CA 51W11 US 51W12 CA 22G44 US 4 30G28 CA 44J40 US 4 81J20 CA 15F74 040 2 3 YES YES 1 YES 1 YES 5 YES 2 YES 3 3 YES YES 1 YES 1 YES 5 YES 2 YES 060 2...

Page 16: ...fter applying last coat of cement to pipe and while both inside socket surface and end of pipe are wet with 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 cellular core pipe NOTE Assembly should be completed within 20 seconds after last application of ce...

Page 17: ...g space Furnace Top Band torque to 40in lbs PVC Exhaust Pipe Top Panel Vent Adaptor To Exhaust Coupling Bottom Band torque to 40in lbs Vent Adaptor Furnace Exhaust Coupling Figure 23 Vent Piping Guidelines NOTE Lennox has approved the use of DuraVent and Centrotherm manufactured vent pipe and terminations as an option to PVC When using the PolyPro by DuraVent or InnoFlue by Centrotherm venting sys...

Page 18: ...e sure there are no sags or low spots 12 ma x of straight pip e Exhaust Pipe 12 Min Horizontal Gas Furnace Figure 24 TABLE 4 MINIMUM VENT PIPE LENGTHS ML195UH Model MIN VENT LENGTH 040 060 080 100 15 ft or 5 ft plus 2 elbows or 10 ft plus 1 elbow Any approved termination may be added to the minimum length listed Use the following steps to correctly size vent pipe diam eter 1 2 3 4 5 6 Which style ...

Page 19: ...0 1 81 66 44 24 138 137 118 118 2 76 61 39 19 133 132 113 113 3 71 56 34 14 128 127 108 108 4 66 51 29 n a 123 122 103 103 5 61 46 24 118 117 98 98 6 56 41 19 113 112 93 93 7 51 36 14 108 107 88 88 8 46 31 n a 103 102 83 83 9 41 26 98 97 78 78 10 36 21 93 92 73 73 Concentric Termination at Elevation 0 4500 ft Number Of 90 Elbows 2 Pipe 3 Pipe Model Model 040 060 080 100 040 060 080 100 1 73 58 42 ...

Page 20: ...side the structure must be included in the total vent length calculation Standard Termination at Elevation 0 4500 ft Number Of 90 Elbows 2 Pipe 3 Pipe Model Model 040 060 080 100 040 060 080 100 1 71 56 34 14 118 117 98 98 2 66 51 29 9 113 112 93 93 3 61 46 24 4 108 107 88 88 4 56 41 19 n a 103 102 83 83 5 51 36 14 98 97 78 78 6 46 31 9 93 92 73 73 7 41 26 4 88 87 68 68 8 36 21 n a 83 82 63 63 9 3...

Page 21: ...TAKE TRANSITION 3 2 EXHAUST INTAKE 2 Appliance Adaptor Appliance Adaptor Figure 26 SIDE VIEW 2 2 2 2 or TYPICAL EXHAUST AND INTAKE PIPE CONNECTIONS IN HORIZONTAL DIRECT OR NON DIRECT VENT APPLICATIONS RIGHT HAND DISCHARGE SHOWN 2 45 MAX 45 MAX DO NOT transition from smaller to larger pipe in horizontal runs of exhaust pipe EXHAUST 12 max When transitioning up in pipe size use the shortest length o...

Page 22: ...vided air intake screen to route the intake piping as shown in figure 28 or 29 Maintain a minimum clearance of 3 76mm around the air intake opening The air intake opening with the protective screen should always be directed forward or to either side in the upflow position and either straight out or downward in the horizontal position The air intake piping must not terminate too close to the floori...

Page 23: ...tdoors and the flue gases are discharged to the out doors The EL195UHNE is then classified as a direct vent Category IV gas furnace In both Non Direct Vent and Direct Vent applications the vent termination is limited by local building codes In the absence of local codes refer to the current National Fuel Gas Code ANSI Z223 1 NFPA 54 in U S A and current CSA B149 Natural Gas and Propane Installatio...

Page 24: ...gn Temperature table provided in the current edition of the ASHRAE Fundamentals Handbook 2 Poly Propylene vent pipe PP by Duravent and Centrotherm NOTE Concentric terminations are the equivalent of 5 and should be considered when measuring pipe length NOTE Maximum uninsulated vent lengths listed may include the termination vent pipe exterior to the structure and cannot exceed 5 linear feet or the ...

Page 25: ... located on public property Clearance under veranda porch deck or balcony 12 Equal to or greater than soffit depth 3 feet 9m 12 3 feet 9m within a height 15 feet 4 5m above the meter regulator assembly 3 feet 9m 6 inches 152mm for appliances 10 000 Btuh 3kw 12 inches 305mm for appliances 10 000 Btuh 3kw and 100 000 Btuh 30kw 36 inches 9m for appliances 100 000 Btuh 30kw 3 feet 9m above if within 1...

Page 26: ...randa porch deck or balcony 12 7 feet 2 1m 3 feet 9m 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 appliances 10 000 Btuh 3kw 12 inches 305mm for appliances 10 000 Btuh 3kw and 100 000 Btuh 30kw 36 inches 9m for appliances 100 000 Btuh 30kw 3 feet 9m abo...

Page 27: ...pressure zones the maximum separation requirement of intake and exhaust pipe DOES NOT apply 3 On roof terminations the intake piping should terminate straight down using two 90 elbows See figure 35 4 Exhaust piping must terminate straight out or up as shown A reducer may be required on the exhaust piping at the point where it exits the structure to improve the velocity of exhaust away from the int...

Page 28: ...ht of the termination kit FLASHING Not Furnished CLAMP FIELD PROVIDED REDUCER MAY BE REQUIRED TO ADAPT LARGER VENT PIPE SIZE TO TERMINATION INTAKE 12 305mm Figure 39 12 305mm Min above grade or cumulation DIRECT VENT CONCENTRIC WALL TERMINATION 71M80 69M29 or 60L46 US 41W92 or 41W93 Canada INTAKE AIR EXHAUST AIR INTAKE AIR INTAKE AIR EXHAUST AIR OUTSIDE WALL GRADE CLAMP Not Furnished FIELD PROVIDE...

Page 29: ...m Min 12 305 mm Min 20 508 mm Max 6 152 mm Max Intake Elbow WALL SUPPORT B A D E B D E A ALTERNATE TERMINATIONS TEE FORTY FIVE DEGREE ELBOWS ONLY D C 12 1 2 E B A 1 2 As required Flue gas may be acidic and may adversely affect some building materials If a side wall vent termination is used and flue gases will impinge on the building materials a corrosion resistant shield 24 inches square should be...

Page 30: ...or 44J41 UNCONDITIONED ATTIC SPACE 3 76mm OR 2 51mm PVC PROVIDE SUPPORT FOR EXHAUST LINES 12 305mm ABOVE AVE SNOW ACCUMULATION Figure 44 Crawl Space and Extended Horizontal Venting Lennox provides kit 51W18 USA kit 15Z70 Canada to install 2 or 3 PVC exhaust piping through the floor joists and into the crawl space See figure 46 This kit can also be used as a supplemental drain for installations wit...

Page 31: ...andevaporatoroil using a separate drain If necessary the condensate line from the furnace and evaporator coil can drain together See figures 51 53 and 54 Upflow furnace figure 53 In upflow furnace applications the field provided vent must be a minimum 1 to a maximum 2 length above the condensate drain outlet connection Any length above 2 may result in a flooded heat exchanger if the combined prima...

Page 32: ...ust slope down a minimum 1 4 per ft toward trap Figure 49 Furnace With Evaporator Coil Using A Separate Drain Condensate DrainConnection Field Provided Vent 1 min 2 max above condensate connection Evaporator drain line required Trap at coil is optional Figure 50 HorizontalFurnace4 Min to 5 Max above condensatedrain connection FurnaceCondensate DrainConnection From Evaporator Coil Optional Condensa...

Page 33: ...ain connection Condensate DrainConnection Evaporator drain line required Trap at coil is optional Figure 53 IMPORTANT When combining the furnace and evaporator coil drains together the A C condensate drain outlet must be vented to relieve pressure in order for the furnace pressure switch to operate properly Furnace with Evaporator Coil Using a Common Drain Unit shown in horizontal left hand discha...

Page 34: ...Drain Connection In Unit Condensate Drain Connection In Unit Vent To Drain Condensate Drain Connection In Unit Optional Condensate Drain Connection OptionalDrainPipingFromTrap DrainTrapAssembly Furnished DrainTrap Assembly with 1 2 inch Piping DrainTrap Assembly with 3 4 inch Piping 1 2 inch 3 4 inch 1 25 mm Min 2 50 mm Max Above Top Of Condensate Drain Connection In Unit 1 25 mm Min 2 50 mm Max A...

Page 35: ...g suitable hangers or straps Install a drip leg in vertical pipe runs to serve as a trap for sediment 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 62 6 In some localities codes may require installation of a manual main shut off valve and union furnished by installer external to the unit Union must be of the grou...

Page 36: ...e 57 Horizontal Applications Possible Gas Piping Configurations GROUND JOINT UNION DRIP LEG MANUAL MAIN SHUT OFF VALVE GROUND JOINT UNION DRIP LEG MANUAL MAIN SHUT OFF VALVE Horizontal Application Left Side Air Discharge Horizontal Application Right Side Air Discharge NOTE BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET FIELD PROVIDED AND INSTALLED Gas Valve Gas Valve Figure 58 ...

Page 37: ...IDE 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 an...

Page 38: ... current draw Maximum Over Current Protection allowed is 15 AMP CAUTION Failure to use properly sized wiring and circuit breaker may result in property damage Size wiring and circuit breaker s per Product Specifications bulletin EHB and unit rating plate Holes are on both sides of the furnace cabinet to facilitate wiring Install a separate properly sized disconnect switch near the furnace so that ...

Page 39: ...hen the combustion air inducer is operating and the pressure switch is closed Any humidifier rated up to 0 5 amp can be connected to this terminal with the ground leg of the circuit connected to ground or the C terminal Install the room thermostat according to the instructions provided with the thermostat See figure 60 for thermostat designations If the furnace is being matched with a heat pump re...

Page 40: ...Page 40 Figure 60 TYPICAL EL195UHNE WIRING DIAGRAM ...

Page 41: ...eplace the furnace if deemed necessary WARNING Danger of explosion Can cause injury or product or property damage If overheating occurs or if gas supply fails to shut off shut off the manual gas valve to the appliance before shutting off electrical supply CAUTION Beforeattemptingtoperformanyserviceormaintenance turn the electrical power to unit OFF at disconnect switch BEFORE LIGHTING the unit sme...

Page 42: ... Open 9 Pressure Switch failed to close or opened during heat demand 10 Watchguard Pressure Switch opened 5 times during one heat demand 11 Pressure Switch stuck closed prior to activation of combustion air inducer 12 Flame Sensed without gas valve energized 13 Low Line Voltage Notes Note 1 A Heartbeat is indicated by a Slow Flash 1 sec on 1 sec off repeating Note 2 Error codes are indicated by a ...

Page 43: ...ccess panel 10 Turn on all electrical power to the 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 the instructions Turning Off Gas to Unit and call your service technician or gas supplier Turning Off Gas to Unit 1 Set the thermostat to the lowest sett...

Page 44: ...orrectly measure manifold pressure follow the steps below 1 Remove the threaded plug from the outlet side of the gas valve and install a field provided barbed fitting Connect measuring device connection to barbed fitting to measure manifold pressure 2 Start unit and allow 5 minutes for unit to reach steady state 3 After allowing unit to stabilize for 5 minutes record manifold pressure and compare ...

Page 45: ...e at maximum speed Do not operate a summer exhaust fan 6 Follow the lighting instruction to place the appliance being inspected into operation Adjust thermostat so appliance will operate continuously 7 Use the flame of match or candle to test for spillage of flue gases at the draft hood relief opening after 5 minutes of main burner operation 8 If improper venting is observed during any of the abov...

Page 46: ...8 Turn on electrical power to furnace 9 Recheck temperature rise Electronic Ignition The integrated control has an added feature of an internal Watchguard control The feature serves as an automat ic reset device for integrated control lockout caused by ignition failure This type of lockout is usually due to low gas line pressure After one hour of continuous thermostat demand for heat the Watchguar...

Page 47: ...insulation and repair if necessary 12 Perform a complete combustion analysis during the furnace inspection to ensure proper combustion and operation Consult Service Literature for proper combustion values 13 Verify operation of smoke detectors and CO detectors and replace batteries as required Perform a general system test Turn on the furnace to check operating functions such as the start up and s...

Page 48: ...onal installer or equivalent service agency or gas supplier Cabinet Parts Outer access panel Blower access panel Top Cap Control Panel Parts Transformer Integrated control board Door interlock switch Blower Parts Blower wheel Motor Motor mounting frame Blower housing cutoff plate Heating Parts Flame Sensor Heat exchanger assembly Gas manifold Assembly Combustion air inducer Gas valve Burner assemb...

Page 49: ...Installed Properly Pipes Supported Condensate Trap Primed Line Sloped Heat Cable Installed and Operable if applicable 2 2 2 1 Horizontal Pipes Sloped if applicable UNIT SET UP 3 4 Flter RETURN AIR Furnace Model Number_______________ Serial Number_________________ 3 DUCT SYSTEM SUPPLY AIR DUCT Sealed Insulated if necessary RETURN DUCT Sealed Filter Installed and Clean Grilles Unobstructed 4 VOLTAGE...

Page 50: ...ATIC 5 Supply External Static _______ Return External Static ______ Total External Static _______ CONDENSATE LINE 6 Leak Free VENT PIPE 7 Leak Free COOLING MODE INDOOR BLOWER AMPS______ 3 TEMPERATURE DROP Return Duct Temperature _________ Supply Duct Temperature _ _______ Temperature Drop _________ 4 DRAIN LINE 8 Leak Free THERMOSTAT Adjusted and Programmed Explained Operation to Owner 9 SUPPLY AI...

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