(c) Set heater ventilating controls (figure
16)
to
vary
the
proportion of fresh air and recirculated air as desired.
(d) Open heater registers (figure 2) to warm air in van quickly if
desired. Close registers when desired temperature is reached.
(2) Stopping heaters.
(a) Place heater control switches in OFF position.
(b) Depress 110 V circuit breaker switches 5 and 8 (figure 14).
(c) Place 208 V main switch (figure 14) in OFF position.
e. Air conditioning operation.
(1) Open the air
conditioner
bonnet
front
door
with
the
control
handles (figure 17).
Figure 17.
Air conditioner controls
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