Desa VN600BA - Manual (Page 14)

www.desatech.com 110720-01J 14
• If control knob does not pop up when
released, contact a qualified service person
or gas supplier for repairs.
Note: If pilot goes out, repeat steps 4 thru 7.
Thermostat models have a safety interlock
system. Wait one (1) minute before lighting
pilot again.
9. Turn control knob counterclockwise
to desired heating level. The main burner
should light. Manual control heaters should
be used in locked positions.
WARNING: Always operate
manual control heaters at the
locked positions. Operation
between these positions may
create a possible health hazard
if used in a poorly ventilated
room. Read owner’s manual for
complete instructions.
CAUTION: Do not try to ad-
just heating levels by using the
equipment shutoff valve.
OPERATING HEATER
Continued
OFF
Figure 17 - Control Knob In The OFF
Position (Manual Control Models)
Ignitor Button Control Knob
Figure 19 - Pilot (pilot may vary from
illustration)
Ignitor Electrode
Pilot Burner
Thermocouple
Figure 18 - Control Knob In The OFF
Position (Thermostat Models)
Ignitor Button Control Knob
OF F P ILO
T
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Heater
1. Turn control knob clockwise to the
OFF position.
2. Turn off any electric power to the appliance
if service is to be performed.
Shutting Off Burner Only (pilot stays lit)
Turn control knob clockwise to the
PILOT position.
MANUAL LIGHTING
PROCEDURE
1. Remove front panel (see page 10).
2. Follow steps 1 through 7 under Lighting
Instructions , page 13.
3. With control knob pressed in, strike match.
Hold match to pilot until pilot lights. =
4. Keep control knob pressed in for 30 seconds
after lighting pilot. After 30 seconds, release
control knob. Now follow step 9, under
Lighting Instructions , column 2.
5. Replace front panel.
THERMOSTAT
CONTROL OPERATION
Thermostat models only
The thermostatic control used on these models
differs from standard thermostats. Standard
thermostats simply turn on and off the burner.
The thermostat used on this heater senses the
room temperature. The thermostat adjusts the
amount of gas flow to the burner. This increases
or decreases the burner flame height. At times
the room may exceed the set temperature. If so,
the burner will shut off. The burner will cycle
back on when room temperature drops below
the set temperature. The control knob can be
set to any heat level between 1 and 5.
Note:
The thermostat sensing bulb measures
the temperature of air near the heater cabinet.
This may not always agree with room tem-
perature (depending on housing construction,
installation location, room size, open air tem-
peratures, etc.). Frequent use of your heater will
let you determine your own comfort levels.