heater contains dangerous voltages
and side cover panels are interchangeable so that the
which can cause severe electrical
ventilation air inlet screen can be positioned either on
shock. Be sure to disconnect the power
the top or side, as the heater location requires.
plug before repairing the heater.
b. Control Panel Assembly. The control panel (fig.
l-l) mounts all of the operator controls and the inlet
connectors. It is installed at the lower front of the
(1) Disconnect the power plug before removing the
heater case. Its components are connected into the
cover panels, unless you are going to perform operating
heater electrical system by solder-type and screw-type
tests or adjustments.
(2) The cover panels (1 and 5, fig. 4-4) are secured to
4-18. Cover Panels and Case.
the heater case (18) with twist-lock type studs (4 and 7).
Give each stud a quarter turn counterclockwise to
release the cover panels.
The ignition system of this space