www.desatech.com
116035-01J
5
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.
FIREPLACE INSTALLATION
Continued
Figure 41 - Blower Wiring Diagram for
Thermostat-Controlled Models
Blue
Variable
Fan Switch
Fan Switch
(N.O.)
Green
White
On
110/115
V.A.C.
Blower
Motor
Black
Off
1
2
Black
Figure 42 - Millivolt Ignition Wiring
Diagram
Figure 43 - Electronic Ignition Wiring
Diagram
INSTALLING OpTIONAL WALL
MOUNT SWITCH - GWMS2
1. Connect one terminal of 25 ft. wire for
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.
2. Route 25 foot wire through openings
provided on sides of burner system to
a convenient location to mount your
switch.
3. Connect one bare wire end to each termi
-
nal of GWMS2 wall switch.
4. Install wall switch and cover in wall.
IMPORTANT:
Do not use any other wire than
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.
Figure 44 - Connecting Wall Switch to
Control Valve
To Wall
Switch
Accessory
DO NOT
CONNECT
TO 120V
RED
REPLACE FACTORY
WIRING WITH 105°C
EQUIVALENT OR
HIGHER RATING
EXTERNAL WIRING
USE ONLY CLASS 2
THERMOSTAT WIRE
18 GA. RED/WHITE
WHITE
TH/TP
TP
TH
WALL SWITCH
THERMOPILE
PILOT
BURNER
IGNITOR
PILOT
GAS
LINE
O
F F
PI
LO
T
ON
PILOT SAFETY VALVE
INCOMING
MAIN GAS
SUPPLY
EV2
EV1
MODEL
IS1070B
SYNETEK CONTROLS IN
C
Gas Valve
Pilot
Burner
Ignitor Lead
Orange
Red
Red
Black
Green
Blue
Blue
120
VAC
24
V
A
C
Ground
Transformer
Black
Black
White
Black
