FMI manual 16

OPERATion

Continued

Thermostat Control

Operation

The thermostatic control used on these models differs from standard thermostats. Standard thermostats simply turn on and off the burner. The thermostat used on this heater senses the room temperature. At times the room may exceed the set temperature. If so, the burner will shut off. The burner will cycle back on when room temperature drops below the set temperature. The control knob can be set to any comfort level between 1 and 5. All plaques will turn off and on.

Note: The thermostat sensing bulb mea-

sures the temperature of air near the heater

cabinet. This may not always agree with

room temperature (depending on housing

construction, installation location, room size, open air temperatures, etc.) Frequent use of

your heater will let you determine your own

comfort levels.

CAUTION: Label all wires prior to disconnection when servicingcontrols.Wiringerrors can cause improper and dangerous operation.

CAUTION:Donotplugpower cord into electrical outlet until installation is complete.

Extension Cord

Use extension cord if needed. The cord must have a three-prong, grounding plug and a three-hole receptacle. Make sure cord is in good shape. It must be heavy enough to carry the current needed. An undersized cord will cause a drop in line voltage. This will result in loss of power and overheating. Use a No. 16 AWG cord for lengths less than 50 feet.

MANUAL LIGHTING

PROCEDURE

1.Remove front panel (see Figure 7, page 9).

2.Follow steps 1 through 5 under Lighting Instructions, page 14.

3.With control knob pressed in, strike match. Hold match to pilot until pilot lights.

4.Keep control knob pressed in for 30 sec- onds after lighting pilot. After 30 seconds, release control knob. Now follow step 9 under Lighting Instructions, page 14.

5.Replace front panel.

Blower

Operation

WARNING: Blower accessory must be grounded. Blower comes with a three-prong, grounding plug as shown in Figure 24. The plug is your protection against electrical shock. Plug it into a standard, three-hole, grounded, outlet. If cord needs replacing, use only a cord with a three-prong, grounding plug.

CAUTION: Verify proper operation after servicing.

Operating Blower

The blower is connected to a thermostat. When unit heats up, the blower will operate. A few minutes after unit cycles off or is turned off, blower will shut off. Blower will cycle on and off in this manner. Note: If you have a heater with a thermostat, the heater and blower will not turn off and on at exactly the same time. Blower cycle times will vary with heat setting selected.

Grounded

Outlet

		Figure 24 - Grounding Plug
			Thermostat
			Sensor
			Switch
110/115			Blower
	V.A.C.		Motor
		Black	Black
		Green
		White	White
			Green

Figure 25 - Wiring Diagram for Blower

Accessory

16 www.fmiproducts.com 125311-01A