www.desatech.com
121232-01A
4
tHeory oF oPeration
Air For Combustion
And Heating
Fuel
Combustion.Chamber
Spark.Plug
Figure 2 - Cross Section Operational View (Heater may vary from illustration)
Clean.
Heated.
Air.Out.
(Front)
Cool.
Air.In.
(Back)
Fan
Motor
Power.
Cord
Hose/Regulator.
Assembly
Solenoid.
Valve
Nozzle
The Ignition System:
.The.direct.spark.ignitor.
(DSI).sends.voltage.to.the.spark.plug/ignitor..
The. spark. plug/ignitor. ignites. the. fuel. and.
air.mixture.
The Safety Control System:
. This. system.
causes the heater to shut down if the flame
goes.out.
ProPane suPPLy
The.chart.below.shows.the.number.of.100.lb..
(45.kg).tanks.needed.to.run.this.heater.
Do. not. operate. this. product. with. any. tank.
smaller.than.100.pounds.
Temperature
Number
at tank location
of tanks
.
above.20°.F.(-7°.C).
2
.20°.F.(-7°.C).to.-10°.F.(-23°.C).
3
.
below.-10°.F.(-23°.C).
(Use.larger
.
.
.tank)
Less.gas.is.vaporized.at.lower.temperatures..
You.may.need.two.or.more.100.lb..(45.kg).
tanks. or. one. larger. tank. in. colder. weather..
Your.local.propane.gas.dealer.will.help.you.
select. the. proper. supply. system.. The. mini-
mum. surrounding-air. temperature. rating. for.
each.heater.is.-20°F.(-29°C).
The Fuel System:
. The. hose/regulator. as-
sembly.attaches.to.the.propane.gas.supply..
The.propane.gas.moves.through.the.solenoid.
valve.and.out.the.nozzle.
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.
Propane.gas.and.propane.tank(s).are.to.be.
furnished.by.the.user.
Use. this. heater. only. with. a. propane. vapor.
withdrawal. supply. system.. See. Chapter. 5.
of.the.
Standard for Storage and Handling of
Liquefied Petroleum Gas, ANSI/NFPA 58
..
Your local library or fire department will have
this.booklet.
The. amount. of. propane. gas. ready. for. use.
from.propane.tanks.varies..Two.factors.decide.
this.amount:.
1.. The.amount.of.propane.gas.in.tank(s)
2.. The.temperature.of.tank(s)
