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Lennox L20 BF-2, Installation And Operation Manual, Page: 25 / 32

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Lennox L20 BF-2 Installation And Operation Manual Download Page 25

REPLACEMENT PARTS – Models: L20BF-2 & L20 DVF-2 

 

For the location of the nearest Dealer for replacement parts, contact: Lennox Hearth Products; 1110 West Taft Avenue; Orange, CA  
92865 
 

PAGE 25

 

Item # 

Catalog # 

Description 

Where Used 

1 17M63 

Door 

Assembly, 

Charcoal 

All 

2 

52L38 

Upper Trim Assembly 

All 

 52L37 

Blower, 

Air 

Circulating 

All 

3 

52L12 

Thermal Fan Switch 

All 

4 34121H 

Disc, High Limit, Manual Reset (Spill Switch) L250-30F  

L20 BF-2 

5 

10050088 

Rheostat (speed control for blower) 

All 

6 12058820 

Power 

Cord 

(blower) 

All 

7 

52L13 

On / Off Switch, Burner 

All 

8 

64L98 

Control Valve NG (with LP Conv. Kit) 

All 

9 52L15 

Pilot 

Assembly 

NG 

All 

10 

15050040 

Orifice, #40, NG (0-4500’ / 1370m) 

All 

10 

10850187 

Orifice, #53, LPG (0-4500’ / 1370m) 

All 

12 17M61 

Burner 

Assembly 

All 

13 17M62 

Log 

Set 

All 

 

1 

2 

7 

5 

6 

4

3 

8

9

10

13

12 

Summary of Contents for L20 BF-2

Page 1: ...ed call the fire department Installation and service must be performed by a quali fied installer service agency or the gas supplier AVERTISSEMENT ASSUREZ VOUS DE BIEN SUIVRE LES INSTRUCTIONS DONN DANS...

Page 2: ...SIDENTIAL LINE VOLT AGE TO THE GAS CONTROL VALVE OR CONTROL WIRING SYSTEM OF THE UNIT 9 ANY SAFETY SCREEN OR GUARD REMOVED FOR SERVIC ING MUST BE REPLACED PRIOR TO OPERATING THE AP PLIANCE 10 WARNING...

Page 3: ...e 11 CONGRATULATIONS ON THE PURCHASE OF YOUR NEW GAS APPLIANCE MANUFACTURED BY LENNOX HEARTH PROD UCTS When you purchased your new gas fired heater you joined the ranks of thousands of concerned indiv...

Page 4: ...of appliance deration replacing burner orifice with a smaller one to reduce input Ratings must be reduced at the rate of 4 percent for each 1 000 feet above sea level Refer to for USA NFPA 54 ANSI Z2...

Page 5: ...e 2 Local amendments 3 Recognized testing lab CSA AGA 4 Is a permit required cost 5 In some states or municipalities a licensed gas fitter or plumber may be required to install this appliance Check wi...

Page 6: ...aftermarket permanently located manufactured home where not prohibited by local codes When installed in Manufactured Housing the following supplemental requirements must be met The appliance must be...

Page 7: ...al vent installation requirements Horizontal vent clearances 3 minimum top 1 minimum on bottom and sidewalls Vertical vent clearances 1 minimum Install vent support brackets every 4 feet of vertical p...

Page 8: ...j BlackPipeLength N A N A SV0E45 45Elbow Galvalume 945 45Elbow Galvanized SV0EB45 45Elbow Black 945B 45Elbow Black SV0E90 90Elbow GalvalumeSwivel 990G 90Elbow GalvanizedSwivel SV0EB90 90Elbow BlackSwi...

Page 9: ...Factory Built Chimney Conversion Kit B for 6 7 8 I D Only compatible w specific brands Contact Vent Manufacturer SV4CCK3 Factory Built Chimney Conversion Kit for 10 I D 1 insulation 7 I D 2 insulatio...

Page 10: ...meter regulator assembly within 3 feet 90 cm horizontally from the centerline of the regulator I 3 ft USA Clearance to service regulator vent outlet 6 ft CAN J 9 USA Clearance to non mechanical air s...

Page 11: ...ping and components Refer to the pipe manufacturer s installation instructions for specific requirements for their product Maintain proper clearances to combustible materials as specified by the pipe...

Page 12: ...valve must be installed up stream of any connector so that the appliance may be isolated to allow service removal and replacement within six feet of the appliance per NFPA 54 or twelve inches in some...

Page 13: ...g the latching rod in the rod guide Care should be exercised to not adjust the tension too high If glass door removal is required for replacement or mainte nance the door can be removed in the open po...

Page 14: ...pins and mounts provided This will en sure a proper flame and safe combustion 1 Carefully place the largest log in the rear of the firebox as shown in the following illustration 2 Install the front lo...

Page 15: ...essary for the desired flame characteristics see Burner Flame Appearance page 21 To adjust air shutter 1 Remove burner from firebox by removing the 2 nuts as shown in the following picture Then lift b...

Page 16: ...the floor If you smell gas STOP Follow B in the safety information above on this label If you don t smell gas go to the next step 6 Visually locate the pilot located in the center of the firebox benea...

Page 17: ...a relief door in case of delayed ignition blowback If the relief door opens remove back panel and inspect for gasket damage If necessary replace with fac tory supplied gasket only Confirm relief door...

Page 18: ...n est pas propre et compl te jusqu l op ration de l appareil converti est ch que suivant les crit res tablis dans les instructions de propri taire provisionn es avec l quipement IN CANADA The convers...

Page 19: ...t inlet 1 2 NPT fitting using the fitting required 11 Perform leak Test CAUTION After this procedure is complete with appli ance installed and connected to gas line recheck the pilot connection and ma...

Page 20: ...t air intake system is disassembled for any reason the service technician should follow vent manu factures instructions for proper reassembly and sealing of the vent air intake system IMPORTANT APPLIA...

Page 21: ...nce or behavior as outlined here consult a qualified gas appliance technician A proper burner flame is shown above The burner flame should have the following characteristics after initial start up let...

Page 22: ...ating system components for repair replacement Note If replacement of any of the original wire is necessary use 105 C thermoplastic wiring MODEL L20 BF 2 MODEL L20 DVF 2 CIRCULATING BLOWER WIRING DIAG...

Page 23: ...en shuts off pilot flame remains lit a Flue vent is blocked flue gas is spilling which activates the safety switch and shuts down the appliance b B Vent The house is negatively pressurized Examine ven...

Page 24: ...switch A O ohms reading indicates a good switch An infinite ohms of 1 reading indicates a defective or open switch If spillage is suspected a simple spillage test can be conducted to confirm or out ru...

Page 25: ...L37 Blower Air Circulating All 3 52L12 Thermal Fan Switch All 4 34121H Disc High Limit Manual Reset Spill Switch L250 30F L20 BF 2 5 10050088 Rheostat speed control for blower All 6 12058820 Power Cor...

Page 26: ...or Kit L20 Gold 2 14M05 BRK L20 Brickaded Interior Kit L20 3 H0251 RC STAT Deluxe Remote Control Thermostatically controlled 4 H0249 RC RC Remote Control Standard On Off 5 89L36 WTK Wall Thermostat Ki...

Page 27: ...Side View SPECIFICATIONS GAS TYPE NATURAL GAS PROPANE LP CLEARANCES TO COMBUSTIBLES Orifice Size 40 098 53 0595 Back Wall Min 2 In 51 mm Minimum Supply Pressure 4 5 WC 10 5 WC Side Wall Min 12 In 305...

Page 28: ...y Top View Side View SPECIFICATIONS GAS TYPE NATURAL GAS PROPANE LP MINIMUM CLEARANCES TO COMBUSTIBLES Orifice Size 40 098 53 0595 Back Wall Min 2 In 51 mm Minimum Supply Pressure 4 5 WC 10 5 WC Side...

Page 29: ...SAFETY LISTING LABEL RATING PLATE PAGE 29...

Page 30: ...SAFETY LISTING LABEL RATING PLATE PAGE 30...

Page 31: ...31 OWNERSHIP RECORDS Dealer s Name Dealer s Address City State Zip Code Serial Number Date of Purchase Date Installed Notes SERVICE AND MAINTENANCE LOG Service Service Service Date Technician Descrip...

Page 32: ...venue Orange CA 92865 LENNOX reserves the right to make changes at any time without notice in design materials specifications prices and also for discontinued colors styles and products Consult your l...

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