Theory Of Operation; Propane Supply - DESA Heating Products BLP55VA Manual Del Propietário

The Fuel System: The hose/regulator assem-
bly attaches to the propane gas supply. The
propane gas moves through the automatic
control 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.
Combustion Chamber
Clean
Heated
Air Out
(Front)
Figure 2 - Cross Section Operational View (Heater may vary from illustration)
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)
The following chart shows the number of 100 lb
(45 kg) tanks needed to run this heater.
4

tHeory oF oPeration

Air For Combustion
And Heating

ProPane suPPLy

www.desatech.com
The Ignition System: The spark transformer
and spark plug lights the main burner
The Safety Control System: This system
causes the heater to shut down if the flame
goes out.
Note: Some parts are located differently on
some models.
Nozzle
Fan
Fuel
Temperature
at tank location
above 20° F (-7° C)
20° F (-7° C) to -0 (-18° C) 1
below -0° F (-18° C)
Smaller tanks can be used for limited run
times but it is recommended to use larger
tanks for optimum performance.
Less gas is vaporized at lower temperatures.
You may need two or more 100 pound (45
kg) tanks or one larger tank in colder weather.
Your local propane gas dealer will help you
select the proper supply system. The minimum
surrounding-air temperature rating for each
heater is -20° F (-29° C).
Motor
Cool
Air In
(Back)
Power Cord
Hose/Regulator
Assembly
Number of tanks
Models
55 85
1 1
2
2 2 (Use larger
121231-01B
125
2
3
tank)