Install On/Off Switch; Thermostat Connections; Glass & Catalyst Installation - Vermont Castings 4030 - 4049 Installation And Operating Manual

UVS27 Vent-Free Gas Heater

Install ON/OFF Switch

The switch assembly parts are found in the parts bag.
1. Attach switch assembly to left rear side of stove
shroud using two screws and existing holes in
shroud. (Fig. 9)
2. Run wires down back of stove, under bottom of rear
shroud to valve.
3. Attach wires to valve terminals. (Fig. 10)
Switch As-
sembly
Screws
Fig. 9 Attach switch assembly to rear shroud.
Fig. 10 Attach switch wires to valve
Thermostat Connection (Optional)
Use only a thermostat rated for 500 - 750 millivolts.
Do not use low voltage (24V) thermostats.
Check the table below for the appropriate gauge ther-
mostat wire to use for the length of lead required in your
installation.
Thermostat Wire / Gauge
18
20
22
1. Install the wall thermostat in the desired location and
run the wires to the stove location. Terminate these
leads with 1/4" female connectors.
2. Connect the thermostat wires to the valve. (Fig. 11)
10
Existing
Holes
ST315
.
attach switch assy
ST228 1/31/00 djt
attach switch
wires to valve
12/99
Maximum Run
40 feet
25 feet
16 feet
On/Off Switch Wiring
Optional Thermostat/Remote Wiring
ST315
Fig. 11 ON/OFF switch and optional Thermostat/Remote
wiring.
ST228
Glass & Catalyst Installation
CAUTION: Air shutter on Natural Gas units
must be adjusted when installing glass and
catalyst for proper operation. LP units do
not use an air shutter.
1. Remove screen. (Fig. 12) Remove rear, left and right
log bracket assembly by unfastening the two screws
which hold the burner in place.
Fig. 12 Remove screen.
OFF
TP/TH
TP
Black
TH
Thermostat
(Optional)
Thermostat/Remote
St124b
on/off/switch
wiring
1/11/00 djt
TP/TH
TP
Black
TH
St124c
Thermostat
wiring
1/11/00 djt
Millivolt
Gas Valve
Screen Hooks
ON
Millivolt
Gas Valve
ST124b
(Optional)
ST124c
ST713
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