10
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
LENNOX MERIT® SERIES B-VENT GAS FIREPLACES • 36" LMBV MODELS • CARE AND OPERATION INSTRUCTIONS
WIRING DIAGRAmS

Wiring diagrams are provided here for reference purposes only. This information is also provided on schematics found on pullout labels located

within the control compartment attached to the gas control valve. Electronic and Millivolt wiring diagrams are provided here.

SIT Millivolt Wiring Diagram
* For Wall Switch Attachment Only.If any of the original wire as supplied must be replaced, itmust be replaced with Type AWM 200°C – 18 GA. wire.
Thermopile
TH
TP TH
TP
Limit
Switch
Damper Switch
BK
BK
BK
BK WHT
*
1. If any of the original wire as supplied must be replaced,1. it must be replaced with Type AWM 200°C – 18 GA. wire.2. 120V, 60Hz – Less than 3 amps.
BK
Junction Box
Transf.
120 V.
24 V
Factory Wired Field Wired
BL

Electronic Wiring Diagram (Honeywell)

(Optional ON/OFF Switch Wiring)

R
BK
BL
To Opposite Side
OPT
FAN
G
W
OPT. ACCESSORY
SWITCH
120
VAC.
BK
LIMIT
SWITCH
W
Gas Valve
B
BL
OPTIONAL
ON/OFF SWITCH
OR
WALL SWITCH
R
R
IGNITER
CONTROL PILOT
ASSEMBLY
Break
Off Tab
DAMPER
SWITCH
BK
BK
WHT BK
BK