Generac Power Systems MAC 750F - Step-by-Step Engine and Heater Startup

10 Owner’s Manual for Flameless Air Heater
Operation
Engine and Heater Startup
1. Close all doors that access the unit’s interior.
IMPORTANT NOTE: All doors on the unit must be
closed during operation.
2. Turn ignition key to ON. The screen displays
“Engine Preheat” (Figure 3-1).
Figure 3-1. Engine Preheat
3. When screen displays “Start Engine” (Figure 3-2),
turn ignition key to START.
Figure 3-2. Start Engine
4. The screen displays “Engine Warming”
(Figure 3-3).
Figure 3-3. Engine Warming
5. When the coolant temperature reaches 140°F
(60
°C), engine warming is complete and the heater
automatically begins warming up. The screen
displays “Heater is warming up--Please wait”
(Figure 3-4).
Figure 3-4. Heater Warming
6. When the heater is warm, heat begins blowing
from ducts and screen displays “Heater on--Press
Off to stop the heater” (Figure 3-5).
Figure 3-5. Heater On
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Start Engine
001585
Engine Warming --
Please Wait
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001586
Heater On--Press O
to stop the heater.