TM 5-4520-241-14
(2) The heater is equipped with two angle brackets for base mounting. They are drilled for 5/16 inch (8 mm) bolts
or lag screws. Base mounting dimensions are shown in figure 4-1.
Figure 4-1. Base mounting dimensions.
b. Installation.
(1) Mount the room thermostat in an upright position on an inside or insulated wall in the area to be heated.
NOTE
Do not install the room thermostat in line with either the heater air inlet or
discharge, in a drafty area, or on an outside wall.
(2) Remove the thermostat cover and attach a 16-gage, 3-wire (red, black, green) electrical cable per MIL-W-
16878D. The cable must be long enough to connect the thermostat to the heater. Secure the ground lead to one of the
thermostat mounting screws, and connect the other two wires (red and black) to the two terminals on the thermostat
switch. Attach the other end of the cable to the three-pin room thermostat plug (which is packaged separately). Be sure
to attach the ground wire of the cable to the ground terminal (pin B) of the plug. Connect the assembled plug to the
ROOM THERMO receptacle on the side of the heater control box.
WARNING
Do not connect the power cable to a 120 VAC, 50/60 Hz electrical source until the
power plug has been properly installed on the power cable.
4-2
