Millistat^tm
Directions for Use

The Millistat is specifically designed for millivolt hearth systems.

Selecting the Proper Location

1. Locate about 5 feet above the floor with a free flow of air.
2. Install on a partitioning wall, not an outside wall.
3. Never expose to direct light or radiation from lamps, sun, fireplace, etc.
4. Avoid locations close to or in the direct path of heat from radiators or warm air registers.
5. Avoid locations close to doors that lead outside, windows, or adjoining outside walls.
6. Make sure there are no pipes or duct work in that part of the wall chosen for thermostat location.
7. Never locate in a room that is warmer or cooler than the rest of the home such as kitchen or hallway or on the opposite side of the wall of a cold or unused room.
8. The living room or dining room is normally a good location, provided there is no cooking range or refrigerator on opposite side of wall.

Installation

1. Remove cover from thermostat by holding base firmly and pulling outward on cover.
2. Level top of thermostat base and mark hole locations for mounting screws. If surface mounting thermomstat, cut out appropriate knockout on base to allow for wire entry behind base.
3. Attach wires to screw terminals on back of thermostat base. Push excess wire into wall or switchbox and plug up hole to prevent drafts inside wall from affecting thermostat operation.
4. Attach thermostat base to wall with the two screws provided. Then tighten mounting screws securely and snap on thermostat cover

Wiring Information

In 250/500 millivolt installations, use No. 14 wire and keep the wiring run as short as possible. Keep this in mind when selecting the thermostat location. In 750 millivolt applications, see the table below to determine the maximum wiring run.

To insure the proper low resistance circuit, wire connections must be clean and tight and use solid copper conductor. **Use in 24V systems may degrade performance.

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