OPERATING HEATER (Manual Control Infrared Models)
To Select Heating Level
To Turn Off Gas To Appliance
Manual Lighting Procedure
OPERATING HEATER (Thermostat Control Blue Flame and Infrared Models)
For Your Safety Read Before Lighting
13
OPERATING HEATER
Continued
TO SELECT
HEATING LEVEL
WARNING: When running heater, set control knob at LOW or HIGH locked positions. Never set control knob between locked positions. Poor combustion and higher levels of carbon monoxide may result.
CAUTION: Do not try to adjust heating levels by using the equipment shutoff valve.
1. Slightly press in control knob and turn
counterclockwise 
to the LOW or HIGH positions.
IMPORTANT: Release downward pressure while turning control knob. Control knob will lock at the desired position.
Control
KnobsBurners
OFF 
PILOT
LOW
OFF 
PILOT
HIGH
OFF 
Figure 21 - Burner Patterns
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Heater
Turn control knob clockwise 
to the OFF position.
Shutting Off Burner Only (pilot stays lit)
Turn control knob clockwise to the PILOT position.
MANUAL LIGHTING
PROCEDURE
1.Remove front panel (see Figure 10, page 8).
2.Follow steps 1 through 5 under Lighting Instructions, page 12.
3.With control knob pressed in, strike match. Hold match to pilot until pilot lights.
4.Keep control knob pressed in for 10 seconds after pilot is lit. After 10 seconds, release control knob.
5.Replace front panel.
THERMOSTAT CONTROL BLUE FLAME
AND INFRARED MODELS
FOR YOUR SAFETY READ
BEFORE LIGHTING
WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing prop- erty damage, personal injury or loss of life.
A.This appliance has a pilot which must be lighted by hand. When lighting the pilot, follow these instructions exactly.
B.BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
•Do not try to light any appliance.
•Do not touch any electric switch; do not use any phone in your building.
•Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
•If you cannot reach your gas supplier, call the fire de- partment.
C.Use only your hand to push in or turn the gas control knob. Never use tools. If the knob will not push in or turn by hand, don’t try to repair it, call a qualified service techni- cian or gas supplier. Force or attempted repair may result in a fire or explosion.
D.Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water.
For more information, visit www.desatech.com