Starting Engine And Heater; Adjusting Air Output Temperature; Adjusting Heater Cfm - Generac Mobile MFH900 Owner's Manual

Flameless
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Operation

Starting Engine and Heater

This section applies both to MANUAL and AUTO modes.
NOTE: The unit starts in the mode in which it was last
shut down.
1. Perform
Pre-start
2. Close all doors.
3. Switch positive air shutdown to OFF (O).
4. Switch battery disconnect to ON (I).
5. Attach ducting to unit.
6. On control panel, switch MAIN POWER to ON (I).
7. See
Figure
3-1. Wait for controller to display OK
To Crank Engine (A).
OK to Crank Engine
Figure 3-1. OK to Crank Engine
8. On control panel, press PUSH TO START button.
CAUTION
Equipment Damage. Do not continuously crank
engine for more than ten seconds. Doing so will lead
to overdischarge of batteries and starter seizure.
Unit engine starts and begins HTF warm-up.
During HTF warm-up, controller displays Wait –
(Figure
Heater Warming
Wait - Heater Warming
Figure 3-2. HTF Warm-Up
9. See
Figure
3-3. Wait for controller to display
Heater Run.
Heater Run
Figure 3-3. Heater Run
10. Adjust air output temperature and heater CFM.
22
Checklist.
(000230)
3-2).

Adjusting Air Output Temperature

This section applies both to MANUAL and AUTO modes.
1. Verify unit is fully operational—controller must
display Heater Run.
2. See
Figure
3-4. Adjust temperature by pressing
Increase (A) or Decrease (B).
Heater Run
Figure 3-4. Air Output Temperature Adjustment
In
AUTO
mode,
temperatures—120, 150, or 180 °F.
In MANUAL mode, choose any output temperature
between 120 and 180 °F.

Adjusting Heater CFM

This section applies both to MANUAL and AUTO modes.
1. Verify unit is fully started—controller must display
Heater Run.
2. See
Figure
3-5. Adjust heater CFM by pressing
Increase (A) or Decrease (B).
A
Heater Run
B
Figure 3-5. Heater CFM Adjustment
In AUTO mode, choose Low, Medium, or High.
NOTE: In AUTO mode, selected temperature
determines what heater CFM setpoints are avail-
able. See
About AUTO Mode
tion.
In MANUAL mode, choose any CFM between
2,800 and 4,900.
Owner's Manual for Flameless Air Heater
A
B
choose
one
of
three
for more informa-

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