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112396-01B 5
OPERATION
Continued
Burner
Tube
Primary Air
Openings
Figure 4 - Bottom View of Heater
for a maximum of 10 seconds while attempt-
ing ignition. If heater does not light, release
control knob and wait 30 seconds. Repeat
step 5 to start heater. Note: Keep hands and
face away from outlet (around top of shell)
of heater while attempting to start heater.
After ignition, hold control knob down for
approximately 30 seconds. This activates the
automatic control system.
6. If burner will not light after repeated tries,
do not attempt to repair heater. Return heater
to nearest authorized service center or call
DESA Heating Productsʼ Technical Service
at 1-866-672-6040.
7.
When burner remains lit, you can turn the heater
regulator knob clockwise to the desired heat set
-
ting. If burner goes out, turn off gas. Check fuel
supply. If fuel supply is OK, restart heater.
TO STOP HEATER
1. Tightly close propane supply valve on propane
tanks by turning clockwise. Wait 15 minutes
for the heater to cool before handling heater.
2. Always remove the gas supply hose from the
heater and the propane tank after each use.
TO RESTART HEATER
1. Wait five minutes after stopping heater.
2. Repeat steps under To Start Heater,
page 4.
STORAGE
CAUTION: Disconnect heater
from propane supply tank(s).
1. Do not store heater while attached to propane
tank. Remove the gas supply hose from the
propane tank by turning the fuel gas connector
nut clockwise.
2. Store propane tank(s) in safe manner. Refer
to Chapter 5 of Standard for Storage and
Handling of Liquified Petroleum Gases,
ANSI/NFPA 58 and/or CAN/CGA B149.2.
Follow all local codes. Always store propane
tanks outdoors. Never store propane tank in
an enclosed area.
3. Place plastic cover caps over brass fittings on
inlet connector and hose/regulator assembly.
4. Store in a dry, clean, and safe place.
MAINTENANCE
WARNING: Never attempt
to service heater while it is
connected to propane supply,
operating, or hot. Severe burns
can occur.
1. Keep heater clean.
2. Inspect heater before each use. Check connec
-
tions for leaks. Apply mixture of liquid soap
and water to connections. Bubbles forming
show a leak that must be corrected. Correct
all leaks at once.
3. Inspect hose/regulator assembly before each
use. If hose is highly worn or cut, replace.
4. Have heater inspected yearly by a qualified
service person.
INSPECTING BURNER
WARNING: Heater shell, top,
and heated air from heater is very
hot during operation. Gradually
move in closer to heater to ob
-
serve flame color. Do not touch
heater shell or top. Do not get too
close to heated air from heater.
Severe burns could occur.
To check for correct burner flame, look through the
ventilation holes in the top of the heater to see the
burner flame. The burner flame should be mostly
blue with slight yellow coloring on the ends. If
the burner flame is mostly yellow, the primary air
openings on the burner tube under the heater base
may be blocked (see Figure 4).
1.
Stop heater (see To Stop Heater) and let cool.
2. Turn heater over to locate the primary air
openings on the burner tube (see Figure 4).
Remove any debris blocking the primary air
openings.