Unpacking; Theory.of.operation - Master TB116 Owner's Manual

The Fuel System:.The.hose/regulator.assembly.attaches.to.the.propane.gas.supply..The.
propane.gas.moves.through.the.automatic.control.valve.and.out.the.injector.
The Air System:.The.motor.turns.the.fan..The.fan.pulls.air.into.and.around.the.combustion.
chamber..This.air.is.heated.and.provides.a.stream.of.clean,.hot.air.
The Ignition System:.The.direct.spark.ignitor.(DSI).sends.voltage.to.the.spark.ignitor...The.
spark.ignitor.ignites.the.fuel.and.air.mixture.
The Safety Control System:.There.are.4.independent.systems:
1.. Flame Sensor: This system causes the heater to shut down if the flame goes out.
2.. Thermal Switch:.This.system.causes.the.heater.to.shut.down.if.the.heater.gets.too.hot.
(blocked.openings).
3.. Air Pressure Switch:.The.system.will.not.allow.the.heater.to.start.if.there.is.not.adequate.
air flow.
4.. ODS - Oxygen Depletion System:.This.system.shuts.down.the.heater.if.the.oxygen.level.
drops below the specified level (18%).
ODS Operation: Burner porting "blows" out causing flame sensor to cool, shutting down heater.
Cool.
Air.In.
(Back)
DSI
Power.Cord
Thermal.Switch
Hose/Regulator.
Assembly
Ignitor,.Flame.
Sensor.and.ODS
1.. Remove. all. packing. items. applied. to.
heater for shipment. Keep plastic cover
caps. (attached. to. inlet. connector. and.
hose/regulator.assembly).for.storage.
120193-01A
THeory oF oPeraTion
Fuel
Figure 2 - Cross Section Operational View

UnPacking

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Air.for.Fuel.
System
2.. Remove.all.items.from.carton.
3.. Check. all. items. for. shipping. damage.. If.
heater.is.damaged,.promptly.inform.dealer.
where.you.bought.heater.
Motor.and.
Blower
Assembly
Air.Pressure.Switch
Clean.
Heated.
Air.Out.
(Front)
Combustion.Chamber
Burner
Injector
7