Prior to starting ambulance heater, ensure that vehicle fuel gauge
registers above 1/4 full. If heater is operated with fuel level below 1/4, the
heater may shut off and not restart. This feature is to ensure that vehicle
remains operational. If heater will not restart, notify unit maintenance to refill
tank and bleed heater fuel system.
Normal start-up time for M996, M996A1, M997, M997A1, and M997A2
ambulance heaters is approximately 2-1/2 minutes. Time may vary depending
on amount of use.
M996 and M996A1 Heater Operation.
Do not operate heater when ventilation system is on. Damage
to heater, or injury to personnel will result.
To operate heater, ensure fuel cutoff valve (14) is open and place vent off-on-max lever (5) to "OFF."
Hold heater run-start switch (2) to "START" until heater light (1) illuminates to show that heater burner is
When heater light (1) illuminates, position heater run-start switch (2) to RUN."
Outlet air temperature can be adjusted by positioning fuel selection switch (3) to either "HIGH" or
To turn heater off, position heater run-start switch (2) to OFF." It will take several minutes for heater
to purge itself of fuel.
M996 and M996A1 Vent Operation.
To operate ventilation system, position on-off-max lever (5) to "ON." The proportion of fresh air
entering patient compartment can be adjusted by the following:
Position fan control switch (4) to HIGH, MED, or LOW."
Adjust off-on-max lever (5) to the right to increase proportion of fresh air entering the system.
Open rear door vent to enable it to function as an exhaust vent.
To turn ventilation system off, place on-off-max lever (5) to "OFF."