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FIREPLACE INSTALLATION
10. The blower will only run when speed con-
trol knob is in the ON position and thermal
switch senses temperature after fireplace
begins to heat up. Blower speed can be
adjusted by rotating control knob. To turn
off, turn knob fully counterclockwise until
it clicks off. If blower is ON and has been
running with fireplace operating, blower
will continue to run for a short time after
fireplace has been turned off. As thermal
switch cools down, blower shuts down
automatically.
11. Peel off backing paper and stick supplied
wiring diagram decal on firebox bottom
approximately 12" in front of blower (see
Figure 39, page 24).
WIRING DIAGRAMS
CAUTION: Label all wires
prior to disconnection when
servicing controls. Wiring errors
can cause improper and dan-
gerous operation. verify proper
operation after servicing.
Variable
Fan Switch
1
Off
2
On
110/115
V.A.C.
Black
White
Green
Figure 41 - Blower Wiring Diagram for
Thermostat-Controlled Models
PILOT
BURNER
THERMOPILE
IGNITOR
PILOT
GAS
LINE
PILOT SAFETY VALVE
INCOMING
MAIN GAS
SUPPLY
Figure 42 - Millivolt Ignition Wiring
Diagram
116035-01J
Continued
Gas Valve
EV1
EV2
Figure 43 - Electronic Ignition Wiring
INSTALLING OpTIONAL WALL
MOUNT SWITCH - GWMS2
1. Connect one terminal of 25 ft. wire for
2. Route 25 foot wire through openings
Fan Switch
(N.O.)
Black
3. Connect one bare wire end to each termi-
Blue
4. Install wall switch and cover in wall.
Blower
IMPORTANT: Do not use any other wire than
Motor
that provided with the GWMS2 wall switch kit.
Do not exceed 15 feet of distance from valve
connection. Using wire of higher gauge or
turns or exceeding the minimum distance will
increase resistance at control valve causing
unreliable performance of fireplace controls.
REPLACE FACTORY
WIRING WITH 105°C
EQUIVALENT OR
HIGHER RATING
EXTERNAL WIRING
USE ONLY CLASS 2
THERMOSTAT WIRE
18 GA. RED/WHITE
RED
DO NOT
CONNECT
TO 120V
WHITE
TH
TP
Figure 44 - Connecting Wall Switch to
TH/TP
WALL SWITCH
www.desatech.com
Pilot
Burner
Ignitor Lead
Orange
Red
Black
Black
Black
Blue
Green
Diagram
wall switch to TPTH terminal on valve.
Connect remaining wire terminal to TH
terminal on valve. Make sure wire termi-
nals are in positions on unit as pictured
in Figure 44. If wires are not connected
as shown switch will not work.
provided on sides of burner system to
a convenient location to mount your
switch.
nal of GWMS2 wall switch.
Control Valve
Red
Transformer
Ground
Blue
120
VAC
To Wall
Switch
Accessory
5
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