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-

Existing

sembly

Holes

 

On/Off Switch Wiring

OFF ON

Black

opile

TP/TH

Therm

TP

TH

Black

ST124b

Screws

ST315

 

Fig. 9 Attach switch assembly to rear shroud.

Optional Thermostat/Remote Wiring

Thermostat/Remote

(Optional)

TH

TP

TPTH

Black

TP/TH

TP

TH

opile Therm

Black

ST228

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

Maximum Run

18

40 feet

20

25 feet

22

16 feet

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)

ST124c

Fig. 11 ON/OFF switch and optional Thermostat/Remote wiring.

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.

Screen Hooks

ST713

Fig. 12 Remove screen.

10

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Vermont Casting 4085 - 4087 manual Install ON/OFF Switch, Thermostat Connection Optional, Glass & Catalyst Installation

4085 - 4087, 4030 - 4036, 4090 - 4092, 4040 - 4046 specifications

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