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112127-01C
22
instaLLation
Continued
INSTALLING OPTIONAL WALL
MOUNT SWITCH - GWMS2
1. Connect one terminal of 25 ft. wire for the
wall switch to the TPTH terminal on the
valve. Connect remaining wire terminal to
the TH terminal on the valve. Make sure
that the wire terminals are in the positions
on the unit as pictured in Figure 34. If
wires are not connected as shown, the
switch will not work.
2. Route the 25 ft. wire through openings
provided on the sides of the burner system
to a convenient location to mount your
switch.
3. Connect one bare wire end to each of the
terminals of the GWMS2 wall switch.
4. Install the wall switch and cover in the
wall.
Figure 34 - Control Valve Terminals
To Control
Switch or
Optional
Accessory
INSTALLING OPTIONAL WALL
MOUNTED THERMOSTAT - GWMT1
WARNING: Installation must
be done by a qualified installer
familiar with low voltage wiring
procedures.
WARNING: Do not connect
this thermostat to any electrical
source! Electrical shock and/or
fire hazard will occur.
1. Open lower door panel. The valve is
attached to the underside of the burner
system assembly.
2. Disconnect from the valve the wires run-
ning from the ON/OFF switch.
3. Connect one terminal of the wire for the
wall thermostat to the THTP terminal on
the valve. Connect remaining wire termi-
nal to the TH terminal on the valve. Make
sure that the wire terminals are in the
positions on the unit as pictured in Figure
45. If wires are not connected as shown
the thermostat will not work.
4. Route the wire to a convenient location to
mount your thermostat (no outside wall).
IMPORTANT
: The wire must not exceed
25 feet in length.
The thermostat should be mounted 54"
above the floor in a location where there
is good air circulation. Avoid heat sources
such as lamps, direct sunlight, fireplace,
or heat and air conditioning ducts.
5. Gently remove cover of the thermostat
from the base. Grasp sides of cover firmly
and pull to separate from base.
6. Feed electrical wires through the rectan-
gular slots (from the back) on each side
of the base (see Figure 35).
7. Connect one bare wire end to each termi-
nal (“W” and “R”) of the thermostat base
(see Figure 36).
Figure 35 - Back View of Thermostat Base
Feed wires through
rectangular slots
Figure 36 - Thermostat Base Terminal
“W” and “R”
W
R
Terminal “W”
Terminal “R”
