OWNER’S MANUAL

FIREPLACE INSTALLATION

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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.

NOTICE: The GWMT1 includes 25' of wire for installation. Your fire- place includes 15' of wire for ac- cessory installation. Choose the length that best fits your needs when installing this accessory.

1.Open lower louver panel. The valve is attached to the underside of the firebox assembly.

2.Disconnect from the valve the wires running from the ON/OFF switch.

3.Connect one terminal of the provided wire for the wall thermostat to the TPTH terminal on the valve. Connect remaining wire terminal to the TH ter- minal on the valve. Make sure that the wire terminals are in the positions on the unit as pictured in Figure 40. If wires are not connected as shown the thermostat will not work.

4.Route the wire through openings pro- vided on the sides of the fireplace to a convenient location to mount your ther- mostat (no outside wall).

IMPORTANT: The wire may be short- ened but must not be lengthened.

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 sun- light, fireplace, or heat and air condi- tioning ducts.

5.Gently remove the cover of the ther- mostat from the base. Grasp the sides of the cover firmly and pull to separate from the base.

6.Feed the electrical wires through the rectangular slots (from the back) on each side of the base (see Figure 41).

WARNING: Do not connect this thermostat to a power source. Electrical shock and/or fire hazard will occur.

7.Connect one bare wire end to each ter- minal (“W” and “R”) of the thermostat base (see Figure 42).

8.Install the base to the wall with screws provided with thermostat.

9.Move the temperature adjustment back and forth to insure the bi-metal is free from restrictions.

10.Replace the cover onto the base. (Upon installation, the thermostat must be al- lowed to stabilize at room temperature for a minimum of 30 minutes for proper operation.)

11.Set the temperature adjustment to the desired setting.

This thermostat has been electronically calibrated at the factory. No adjustment or leveling is necessary.

To Wall

Thermostat

Figure 40 - Control Valve Terminals

Feed wires through rectangular slots

Figure 41 - Back View of Thermostat Base

WTerminal “W”

R

Terminal “R”

Figure 42 - Thermostat Base Terminals “W” and “R”

INSTALLING OPTIONAL WALL MOUNT SWITCH GWMS2

NOTICE: The GWMS2 includes 25' of wire for installation. Your fireplace includes 15' of wire for accessory installation. Choose the length that best fits your needs when installing this accessory.

1.Connect one terminal of the provided wire for the wall switch to the TPTH terminal on the valve. Connect remain- ing wire terminal to the TH terminal on the valve. Make sure that the wire ter- minals are in the positions on the unit as pictured in Figure 40. If wires are not connected as shown the switch will not work.

2.Route the wire through openings pro- vided on the sides of the burner sys- tem 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.

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Desa BHDV37PC, BHDV41NC Installing Optional Wall Mounted Thermostat GWMT1, Installing Optional Wall Mount Switch GWMS2