OWNER’S MANUAL

INSTALLATION

Continued

6.Connect one bare wire end to each ter- minal (“W” and “R”) of the thermostat base (see Figure 34).

7.Install the base onto the wall with the provided screws.

8.Move the temperature adjustment back and forth to insure the bimetal is free from restrictions.

9.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).

10.Set switch on heater to Auto position.

11.Set the temperature adjustment to the desired setting. This thermostat has been electronically calibrated at the factory. No adjustment or leveling is necessary.

Terminal "W"

W

Terminal "R"

R

Figure 34 - Thermostat Base Terminals "W" and "R"

OPTIONAL WALL SWITCH - GWMS2

WARNING: Read and follow installation instructions. Instal- lation should be done by a quali- fied installer familiar with low- voltage wiring procedures.

WARNING: Do not connect this switch to any electrical source! Electrical shock and/or fire hazard will occur.

1.

Connect one terminal of 25 ft. wire to

 

bottom contact of switch (see Figure 32).

2.

Connect remaining wire terminal to the

 

“TH” terminal on the control valve.

 

Make sure that wire terminals are in

 

the positions on your unit as pictured

 

in Figure 32. If wires are not “crossed”

 

the thermostat will not work.

3.

Route the 25 ft. wire to a convenient

 

location to mount your wall switch (no

Switch on Gas

Control

Heater

Valve

AUTO

 

OFF

 

ON

To Wall

One

terminal of

Thermostat

25 ft. wire

or Switch

Figure 32 - Connecting Wire Terminals

Feed wires through rectangular slots

To Wall Thermostat or Switch

outside walls).

WARNING: Do not connect the switch to a power source. Electrical shock and/or fire haz- ard will occur.

IMPORTANT: The wire may be shortened but must not be lengthened.

4.Connect one bare wire end to each of the terminals of the provided wall switch.

5.Install the wall switch and cover in the wall.

Figure 33 - Back View of Thermostat Base

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Desa VMH26PR installation manual Optional Wall Switch GWMS2, Route the 25 ft. wire to a convenient

VMH26PR specifications

Desa VMH26PR is a cutting-edge horizontal multistage pump designed for a variety of applications, primarily in industrial and municipal sectors. Its robust construction delivers excellent performance and reliability, making it a preferred choice for demanding environments.

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