www.desatech.com
110098-01F
3
SAFETY INFORMATION
Continued
17. Never use heater in living or sleeping areas.
18. Never block air inlet (rear) or air outlet (front)
of heater.
19. Never move, handle, refuel or service a hot,
operating or plugged-in heater.
20. Never attach duct work to front or rear of heater.
21. Never use gasoline, crankcase drainings,
naphtha, paint thinners, alcohol or other highly
flammable fuels.
22. Never leave a heater plugged in without adult
supervision if children or animals are likely to
be present.
23.
Warning to New York City Residents For
Use Only At Construction Sites
in ac-
cordance with applicable NYC codes under
NYCFD certificate of approval #4803, #4899,
#4908, #4909 or #4934 or NYC Board of Stan-
dards and Appeals calendar number 62-59-5A.
PRODUCT
IDENTIFICATION
Figure 1 - 350,000 Btu/Hr Model
Upper Shell
Power
Cord
Thermostat
Fuel
Cap Fuel
Tank
Hot Air
Outlet
Lower
Shell
Flame-Out Control
Reset Button
Hot Air
Outlet
Figure 2 - 600,000 Btu/Hr Model
Power
Cord
Fuel Tank
Upper Shell
Fuel Cap
Thermostat
Lower
Shell
Flame-Out Control
Reset Button
UNPACKING
1. Remove all protective packing applied to
heater for shipment.
2. Remove heater from shipping container.
3. Check heater for any shipping damage. If
heater is damaged, promptly inform dealer
where you bought heater.
OPERATION
The Fuel System:
The motor turns the fuel pump.
The fuel pump pulls fuel from the fuel tank.
The fuel pump pushes fuel through a filter and a
solenoid valve and out the burner head nozzle. A
fine mist of fuel is sprayed into the combustion
chamber.
The Air System:
The motor turns the fan. The
fan pushes air into and around the combustion
chamber. This air is heated and provides a stream
of clean, hot air.
The Ignition System:
The electronic ignitor sends
voltage to the spark plug. The spark plug ignites
the fuel and air mixture.
The Flame-Out Control System:
This system
causes the heater to shut down if the flame goes
out. It also allows the fan to continue running
after normal shutdown of heater. This cools the
combustion chamber.
Figure 3 - Cross Section Operational
View
Fan
Clean
Heated
Air Out
Combustion
Chamber
Spark
Plug
Burner
Head
Solenoid V
alve
Motor
Electronic
Ignitor
Fuel
Tank
Nozzle
Fuel
Air for Combustion and Heating
Fuel Line
To
Solenoid V
alve
Fuel
Filter
Fuel
Pickup
Line
Cool
Air In
Fuel Pump/
Fuel Filter
