10
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
* Optional Control Switches: Wall On/Off Switch or Timer or Remote Control
Switch. If an optional control switch is installed, turn the appliance-mounted
ON/OFF burner control switch to the OFF position.
LENNOX HEARTH PRODUCTS • CRESTLINE™ SERIES B-VENT GAS FIREPLACES • 36"/42" LSBV MODELS • INSTALLATION INSTRUCTIONS
WHITE
DAMPER SWITCH
LIMIT SWITCH
CONNECTOR
BLACK
BLACK
ELECTRONIC WIRING DIAGRAM
BK
W
24 V.
TRANSF
120 V.
ELECTRONIC IGNITION
CONTROL BOARD
APPLIANCE MOUNTED
ON/OFF SWITCH
PILOT BURNER
IGNITER-SENSOR
ASSEMBLY
GAS VALVE
EV2
EV1
GROUND
CONNECTOR
GREEN LED
WHITE
ORANGE
BLACK
PURPLE
GREEN
BLUE
BLACK
WHITE
Junction Box
White
Green
Red
Black
Neutral
Side of
Receptacle
Green
Ground
Screw
Hot
Side of
Receptacle
Tab
Broken
Plug blower
into this
receptacle
Tab Intact
120 VAC - Black
n
e
e
r
G
-
d
n
u
o
r
G
e
ti
h
W
-
l
a
rt
u
e
N
CONNECTOR
WALL MOUNTED ON/OFF
SWITCH (OPTIONAL)
Figure 13
Step 5. Field Wiring
– Refer to Section A for
millivolt appliances and Section B for electronic
appliances.
A. Millivolt Wiring
– Units are fitted at the fac-
tory with an SIT millivolt gas control valve. The
valve has been tested with and approved for use
with these appliances and is listed accordingly.
Refer to
Figure 15
for the wiring diagram.
The gas valve has been set in place and has
been pre-wired at the factory. Locate the wall
switch (not provided) or optional remote control
in the desired location and connect the millivolt
wire
(see
Figure 15
)
.
CAUTION: DO NOT CONNECT THE WALL
SWITCH TO A 120V POWER SUPPLY.
Note:
The ends of the 18' coiled wire must be
connected to the wall switch (not supplied) for
the appliance to operate.
B. Electronic Wiring
– The electronic appliance
must be connected to the main power supply.
To install, route a 3-wire 120V 60Hz power sup-
ply to the appliance junction box and ground.
Locate and install a low voltage (24V) wall
switch (not supplied) in the desired location.
Connect the low voltage wire to this switch
(see
Figure 13
)
.
1.
Route a 3-wire 120V 60Hz power supply line
to the appliance junction box wires and ground
(
Figures 13 and 14
)
.
2.
After wiring is complete, replace the appliance
junction box cover and secure with the hex head
screws previously removed.
BLACK
BLACK
DAMPER SWITCH
LIMIT SWITCH
MILIVOLT WIRING DIAGRAM
TH
TP
TP
TH
THERMOPILE
WALL MOUNTED
ON/OFF SWITCH
GAS VALVE
BLACK
WHITE
Figure 15
CAUTION
Ground supply lead must
be connected to the wire
attached to the green
ground screw located on
the outlet box. See
Figure
14
. Failure to do so will
result in a potential safety
hazard. The appliance must
be electrically grounded
in accordance with local
codes or, in the absence of
local codes, the National
Electrical Code, ANSI/
NFPA 70-latest edition.
(In
Canada, the current CSA C22.1
Canadian Electrical Code).
Figure 14
NOTE:
Supply wires may be alternatively connected to
the outlet using the screw terminals, however the black
supply wire must be wired to a terminal that is opposite
(across the outlet) the point where the white supply wire
is connected (
Figure 14
).
White
(Supply)
Black
(Supply)
Bipolar
Terminal
Screw
120 Vac
60 Hz
Green Wire Ground
Connection
Red
(Supply)
120 Vac
60 Hz
120 Vac
60 Hz
CONTROL SWITCH *
