Heat Wagon VG500, Installation And Maintenance Manual

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START UP (CONTINUED)
4. Turn the control switch on the control box to position “1” (HEATING).
5. When the ambient temperature level is low, the burner switches on automatically. The fan
does not switch on until the set temperature (104ºF) of the heat-exchanger has been
reached (will take approximately 1-5 minutes).
• After startup, the heater is operated automatically by the room thermostat and governed by all
control devices, including the safety limit controls.
• The room thermostat (TSTAT) and burner sensor control the running sequences of the
burner and the fan sensor controls the fan function.
• Overheat limit reset (STB) controls and shuts off the heater (burner) in the case of overheating.
• The unit can also be used for ventilation purposes only, if needed.
1. Turn the control switch on the control box to position FAN.
2. The unit is now in the continuous ventilating mode.
3. Heating is not possible in this mode.
DUCTING (Warm Air)
• Minimum clearance from combustible materials is 4 inches.
• Use steel ducting or fabric ducting capable of withstanding maximum temperature of 300ºF.
• Maximum length of duct: 200’ (straight).
• Duct diameter: 21”.
• Make sure that the duct is safely and properly fastened to the outlet.
• Avoid sharp bends and corners to ensure maximum air flow and avoid back pressure/heat
accumulation in heater.
• FAILURE TO COMPLY WITH THESE RECOMMENDATIONS COULD RESULT IN SHUTDOWN
OF THE HEATER.
SHUT DOWN
• Turn control switch to the right, heat position (*).
• Close fuel supply.
Important!
The air supply fan continues running to cool down the combustion chamber/heat exchanger
and then stops later. The fan can restart for several times before finally switching off!
WARNING!
UNIT MAY BE UNPLUGGED IN EMERGENCY SITUATIONS ONLY. OTHERWISE, DO NOT
STOP THE UNIT BY UNPLUGGING IT. UNIT NEEDS TO COOL DOWN USING ITS OWN
FAN. FAILURE TO COMPLY WITH PROPER SHUT-DOWN PROCEDURES CAN CAUSE
DAMAGE TO THE COMBUSTION CHAMBER, HEAT EXCHANGER, SAFETY FEATURES AND
VOID WARRANTY.
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