Desa 125-R - Manuel (Page 6)

www.desatech.com 114248-01B 6
OPERATING
INSTRUCTIONS
WARNING: If you do not fol-
low these instructions exactly,
a fire or explosion may result
causing property damage, per-
sonal injury or loss of life.
CAUTION: This appliance
is hot during normal operation,
avoid physical contact.
CAUTION: Do not place
clothing or other combustible
materials on this appliance.
DO NOT operate this heater if any part has been
under water. Call a qualified service technician to
inspect the appliance and to replace any part of
the control system or gas control valve which has
been under water.
LIGHTING HEATER
1. Before attempting to light the heater, smell
all around the heater area for gas. Turn on
the gas supply to the appliance and check all
fittings and connections for gas leaks using a
mild soap and water solution. NEVER use a
match to check for gas leaks. Should a gas leak
occur, shut off the gas supply to the appliance
immediately. Wait a minimum of five minutes
before repairing the leak.
2. Use only the fuel intended for this appliance.
Check the appliance rating plate for the correct
fuel information.
3. Turn the control knob clockwise to the OFF
position. See Figure 1, page 3 and Figure 2
for location of appliance parts.
4. Wait a sufficient length of time (at least five
minutes) to allow gas which may have ac-
cumulated in burner compartment to escape.
5. Turn on the main gas supply.
6. Turn control knob counterclockwise to the
PILOT position.
7a. Press and turn control knob counterclockwise to
PILOT position and hold for 1 to 2 minutes. This
may take longer to purge air from supply hose
depending on length of the hose being used.
Press red spark ignition button to light pilot
flame (repeat until pilot lights) and continue to
hold control knob at PILOT position for 30-60
seconds to enable pilot light safety system. Fully
turn control knob to HI position to light burner.
7b. To match light the pilot , move the lighting
hole cover aside (see Figure 2) and place a
lighted match into hole. Press control knob
and hold while lighting and observing pilot
burner. Ensure that pilot burner ignites from
match. Allow pilot to burn approximately 30
seconds before releasing control knob. If pilot
does not remain lit, repeat lighting operation
allowing a longer period of time before releas-
ing control knob.
Note: In cases where long runs of gas supply lines
have been installed ahead of the appliance, it may
be necessary to bleed trapped air out of supply lines
before lighting pilot. New installations generally
require bleed of supply lines. Wait a minimum of
five minutes after bleeding supply lines before
attempting to light heater.
Adjust pilot if necessary as noted under Pilot
Burner Adjustment, page 7.
8. Turn control knob counterclockwise to the ON
position. The burner will light. DO NOT oper-
ate heater in any position other than full ON.
IMPORTANT: DO NOT attempt to adjust the
main burner input using the main gas supply valve.
This may cause the pilot and thermocouple to shut
down the burner.
Burner
Filter
Control knob
Thermocouple
Mounting
Brace
Pilot Assembly
Gas Manifold
Combustion
Chamber
Figure 2 - Appliance Parts Identification
Match
Lighting
Hole Cover