Desa RN30BT Quick start guide

1
Save this manual for future reference.
BLUE-FLAMEVENT-FREE
NATURAL GAS HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
WARNING: If the information in this manual
is not followed exactly, a fire or explosion
may result causing property damage, per-
sonal injury, or loss of life.
— Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do
not use any phone in your building.
• Immediatelycallyourgassupplierfrom
a neighbor’s phone. Follow the gas
supplier’s instructions.
• If you cannot reach your gas supplier,
call the fire department.
— Installation and service must be per-
formed by a qualified installer, service
agency, or the gas supplier.
D
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®
WARNING:Improperinstallation,
adjustment, alteration, service, or
maintenance can cause injury or
property damage. Refer to this
manualforcorrectinstallationand
operationalprocedures.Forassis-
tance or additional information
consult a qualified installer, ser-
vice agency, or the gas supplier.
Model: RN30BT, RN30B and CGN18B

2
CONTENTS SECTION PAGE
Safety Information......................................................................... 2
Product Identification .................................................................... 4
Local Codes ...................................................................................4
Unpacking......................................................................................4
Product Features ............................................................................4
Installing To Wall.......................................................................... 5
Connecting To Gas Supply............................................................10
Checking Gas Connections............................................................11
Operating Heater (Thermostat Model) ..........................................13
Operating Heater (Non-Thermostat Model) .................................. 16
Inspecting Burner ..........................................................................18
Cleaning And Maintenance ...........................................................20
Troubleshooting.............................................................................20
Technical Service ..........................................................................24
Specifications ................................................................................ 24
Service Hints ................................................................................. 24
Replacement Parts .........................................................................24
Parts Centrals................................................................................. 25
Accessories ....................................................................................25
Illustrated Parts List.......................................................................26-31
Warranty Information .................................................................... Back Cover
!
WARNING ICON G001
WARNINGS
IMPORTANT: Read this owner’s manual carefully and completely
before trying to assemble, operate, or service this heater. Improper
use of this heater can cause serious injury or death from burns, fire,
explosion, electrical shock, and carbon monoxide poisoning.
!
WARNING ICON G001
DANGER
Carbon monoxide poisoning may lead to death!
Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning
resemblethe flu,withheadaches,dizziness,or nausea.If youhavethesesigns,the
heater may not be working properly. Getfreshairat once! Have heater serviced.
Some people are more affected by carbon monoxide than others. These include
pregnant women, persons with heart or lung disease or anemia, those under the
influence of alcohol, and those at high altitudes.
Natural Gas: Natural gas is odorless. An odor-making agent is added to natural
gas. The odor helps you detect a natural gas leak. However, the odor added to
natural gas can fade. Natural gas may be present even though no odor exits.
Make certain you read and understand all warnings. Keep this manual for
reference. It is your guide to safe and proper operation of this heater.
SAFETY
INFORMATION
Safety Information continued on next page

3
SAFETY
INFORMATION
Continued
!
WARNING ICON G 001
WARNINGS Continued
1. Use only natural gas. Do not convert heater to use different fuel type.
2. If you smell gas
• Shut off gas supply.
• Do not try to light any appliance.
• Do not touch any electrical 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 department.
3. Never install the heater
• in sleeping quarters, a mobile home, or a recreational vehicle
• where curtains, furniture, clothing, or other flammable objects are less than
36 inches from the front, top, or sides of the heater
• as a fireplace insert
• in high traffic areas
• in windy or drafty areas
4. Open window, door, or garage door to admit fresh, outside air when using
heater. Open window one or two inches. When used without fresh, outside air,
heater may give off carbon monoxide gas.
5. Never run heater in small, closed room.
6. If heater shuts off, do not relight until you provide fresh, outside air. If heater
keeps shutting off, have it serviced.
7. Do not run heater
• where flammable liquids or vapors are used or stored
• under dusty conditions
8. Never place any objects on the heater.
9. Surface of heater becomes very hot when running heater. Keep children and
adults away from hot surface to avoid burns or clothing ignition. Heater will
remain hot for a time after shut-down. Allow surface to cool before touching.
10.Make sure grill guard is in place before running heater.
11.Do not alter heater or its controls. Any change may create a safety hazard.
12.Do not use heater if any part of heater has been under water.
13.Turn off and unplug heater and let cool before servicing. Only a qualified
service person should service and repair heater.
14. Do not operate heater above elevations of 4,500 feet.

4
PRODUCT
IDENTIFICATION
Ignitor Button Control Knob
Front
Panel
Heat Shield
(RN30BT,
RN30B) or
Glass Panel
(CGN18B)
Grill
Guard
PRODUCT
FEATURES
Safety Device
This heater has a pilot with an Oxygen Depletion Sensor Shutoff System (ODS).
The ODS/pilot is a required feature for vent-free heaters. The ODS/pilot shuts off
the heater if there is not enough fresh air.
Piezo Ignition System
This heater has a piezo ignitor. This system requires no matches, batteries, or other
sources to light heater.
Thermostatic Heat Control
(Thermostat Model Only)
Thermostat model has a thermostat sensing bulb and a control valve. This results in
the greatest heater comfort. This can also result in lower gas bills.
LOCAL CODES Install and use heater with care. Follow all local codes. In the absence of local
codes, use the latest edition of National Gas Code ANSI Z223.1, also known as
NFPA 54*.
*Available from: American National Standards Institute, Inc.
1430 Broadway
New York, NY 10018
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269
Figure 1 - Vent-Free Natural Gas Heater
UNPACKING 1. Remove heater from carton.
2. Remove all protective packaging applied to heater for shipment.
3. Check heater for any shipping damage. If heater is damaged, promptly inform
dealer where you bought heater.
Heater
Cabinet

5
INSTALLING
TO WALL NOTICE
Aqualifiedservicepersonmustinstallheater.Followalllocalcodes.
CHECK GAS TYPE
Use only natural gas. If your gas supply is not natural gas, do not install heater. Call
dealer where you bought heater for proper type heater.
INSTALLATION ITEMS
Before installing the heater, make sure you have the items listed below.
• piping (check local codes)
• sealant (resistant to propane gas)
• manual shutoff valve *
• ground joint union
• test gauge connection * (see
Figure 11, page 11)
• sediment trap
• tee joint
• pipe wrench
* AnA.G.A.design certified manualshutoffvalve with 1/8"NPTtap is anacceptable
alternative to test gauge connection. Purchase the optional A.G.A. design certified
manual shutoff valve from your dealer. See Accessories, page 25.
LOCATING HEATER
This heater is designed to be mounted on a wall.
!
WARNING ICON G001
WARNING
Maintain the minimum clearances shown in Figure 2 (page 6). If
you can, provide greater clearances from floor, ceiling, and join-
ing wall.
Continued
!
WARNING ICON G 001
CAUTION
Operating heater where impurities in the air (such as tobacco
smoke) exist may discolor walls.
!
WARNING ICON G 001
WARNING
Never install the heater
•in sleeping quarters, a mobile home, or a recreational vehicle
•where curtains, furniture, clothing, or other flammable objects
are less than 36 inches from the front, top, or sides of the
heater
•as a fireplace insert
•in high traffic areas
•in windy or drafty areas
You can locate model CGN18B on floor, away from a wall. An optional floor
mounting stand is needed. Purchase the floor mounting stand from your dealer.
See Accessories, page 25.

6
!
WARNING ICON G 001
CAUTION
If you install the heater in a home garage
•heater pilot and burner must be at least 18 inches above floor
•locate heater where moving vehicle will not hit it
Figure 3 - Attaching Thermostat Sensing Bulb
Clamp
Thermostat
Sensing Bulb
THERMOSTAT SENSING BULB
(Thermostat Model Only)
The thermostat sensing bulb has been placed inside the heater for protection during
shipping.
Locating Thermostat Sensing Bulb
1. Remove front panel of heater (see Figure 5, page 7).
2. Locate thermostat sensing bulb just under burner assembly.
IMPORTANT: Attach thermostat sensing bulb to back of heater for proper opera-
tion.
Attaching Thermostat Sensing Bulb
1. Remove thermostat sensing bulb from holders inside heater. Route through slot
opening in bottom of heater.
2. Place clamp on thermostat sensing bulb as shown in Figure 3. Clamp is provided
in hardware package.
3. Snap clamp into upper mounting hole as shown in Figure 3. Mounting hole is
located on lower left edge on back of heater. Make sure the thermostat sensing
bulb is pointing up.
For convenience and efficiency, install heater
•where there is easy access for operation, inspection, and service
•where strong wind gusts from an open door or garage door can not blow
directly into heater.
An optional fan kit is available from your dealer. See Accessories, page 25. If
planning to use fan, locate heater near an electrical outlet.
36"
*
FLOOR
CEILING
Minimum
Minimum To Floor
6"
Minimum
From
Sides Of
Heater
Left
Side Right Side
* 163/4" - RN30BT, RN30B
* 3" - CGN18B
Figure 2 - Mounting Clearances As Viewed From Front of Heater
INSTALLING
TO WALL
Continued

7
INSTALLING HEATER TO WALL
Mounting Bracket
The mounting bracket is located on back panel of heater. It has been taped there for
shipping. Remove mounting bracket from back panel.
Figure 4 - Mounting Bracket Location
Mounting
Bracket
GRH/OV 003B FRONT PANEL REMOVAL G H
Figure 5 - Removing Front Panel Of Heater
Removing Front Panel Of Heater
1. Remove two screws near bottom corners of front panel.
2. Lift straight up on grill guard until it stops. Grill guard will slide up about 1/4".
3. Pull bottom of front panel forward, then down.
4. Remove cardboard packing from grill and glass (CGN18B) or heat shield
(RN30BT and RN30B).
Methods For Attaching Mounting Bracket To Wall
Only use last hole on each end of mounting bracket to attach bracket to wall. These
two holes are 16 inches apart from their centers. Attach mounting bracket to wall in
one of two ways.
1. Attaching to wall stud
2. Attaching to wall anchor
Attaching to wall stud This method provides the strongest hold. Insert mounting
screws through mounting bracket and into wall studs.
Attaching to wall anchor This method allows you to attach mounting bracket to
hollow walls (wall areas between studs) or to solid walls (concrete or masonry).
Decide which method better suits your needs. Either method will provide a secure
hold for the mounting bracket.
INSTALLING
TO WALL
Continued

8
Marking Screw Locations
1. Tape mounting bracket to wall where heater will be located. Make sure mount-
ing bracket is level.
Attaching Mounting Bracket To Wall
Note: Wall anchors, mounting screws, and spacers are in hardware package. The
hardware package is provided with heater.
Attaching to wall stud method
For attaching mounting bracket to wall studs
1. Drill holes at marked locations using 9/64" drill bit.
2. Place mounting bracket onto wall. Line up last hole on each end of bracket with
holes drilled in wall.
3. Insert mounting screws through bracket and into wall studs.
4. Tighten screws until mounting bracket is firmly fastened to wall studs.
Attaching to wall anchor method
For attaching mounting bracket to hollow walls (wall areas between studs) or solid
walls (concrete or masonry)
1. Drill holes at marked locations using 5/16" drill bit. For solid walls (concrete or
masonry), drill at least 1" deep.
2. Fold wall anchor as shown in Figure 7.
2. Mark screw locations on wall (see Figure 6).
Note: Only mark last hole on each end of mounting bracket. Insert mounting
screws through these holes only.
3. Remove tape and mounting bracket from wall.
3. Insert wall anchor (wings first) into hole. Tap anchor flush to wall.
Figure 7 - Folding Anchor
Continued
!
WARNING ICON G 001
WARNING
Maintain minimum clearances shown in Figure 6. If you can,
provide greater clearances from floor and joining wall.
32 1/2"
Min.
11"
Min. 16"
18 3/4"
Min.
7 1/4"
Min.
Adjoining Wall
16"
Adjoining Wall
Only Insert Mounting
Screws Through Last
Hole On Each End
Only Insert Mounting
Screws Through Last
Hole On Each End
Floor Floor
RN30BT and RN30B CGN18B
Figure 6 - Mounting Bracket Clearances
INSTALLING
TO WALL
Continued

9
4. For thin walls (1/2" or less), insert red key into wall anchor. Push red key to
“pop”open anchor wings.
IMPORTANT: Do not hammer key!
For thick walls (over 1/2" thick) or solid walls, do not pop open wings.
Figure 10 - Installing Bottom Mounting Screws
Figure 8 - Popping Open Anchor Wings For Thin Walls
5. Place mounting bracket onto wall. Line up last hole on each end of bracket with
wall anchors.
6. Insert mounting screws through bracket and into wall anchors.
7. Tighten screws until mounting bracket is firmly fastened to wall.
Placing Heater On Mounting Bracket
1. Locate two horizontal slots on back panel of heater.
2. Place heater onto mounting bracket. Slide horizontal slots onto stand-out tabs on
mounting bracket.
Figure 9 - Mounting Heater Onto Mounting Bracket
Stand-Out Tab Mounting Bracket
(attached to wall)
Installing Bottom Mounting Screws
1. Locate two bottom mounting holes. These holes are near bottom on back panel
of heater (see Figure 10).
2. Mark screw locations on wall.
3. Remove heater from mounting bracket.
4. If installing bottom mounting screws into hollow or solid wall, install wall
anchors. Follow steps 1 through 4 under Attaching To Wall Anchor Method,
page 8.
If installing bottom mounting screw into wall stud, drill holes at marked loca-
tions using 9/64" drill bit.
5. Replace heater onto mounting bracket.
6. Place spacers between bottom mounting holes and wall anchor or drilled hole.
7. Hold spacer in place with one hand. With other hand, insert mounting screw
through bottom mounting hole and spacer. Place tip of screw in opening of wall
anchor or drilled hole.
8. Tighten both screws until heater is firmly secured to wall. Do not over tighten.
Note: Do not replace front panel at this time. Replace front panel after making
gas connections and checking for leaks (see pages 10-12).
Horizontal Slots
INSTALLING
TO WALL
Continued

10
CONNECTING
TO GAS
SUPPLY
NOTICE
A qualified service person must connect heater to gas supply.
Follow all local codes.
!
WARNING ICON G 001
WARNING
Never connect heater to private (non-utility) gas wells. This gas is
commonly known as well-head gas.
IMPORTANT: Check gas line pressure before connecting heater to gas line. Gas
line pressure must be no greater than 14 inches of water. If gas line pressure is
higher, heater regulator damage could occur.
Installation must include a manual shutoff valve, union, and plugged 1/8" NPT tap.
Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream
from heater (see Figure 11, page 11).
Apply pipe joint sealant lightly to male threads. This will prevent excess sealant
from going into pipe. Excess sealant in the pipe could result in clogged heater
valves.
!
WARNING ICON G001
CAUTION
Use only new, black iron or steel pipe. Copper tubing may be used
in certain areas. Check your local codes. Use pipe of 1/2" diameter
or greater to allow proper gas volume to heater. If pipe is too small,
undue loss of pressure will occur.
CAUTION
Use pipe joint sealant that is resistant to liquid petroleum (LP) gas.
!
WARNING ICON G 001
Install sediment trap in supply line as shown in Figure 11. Locate sediment trap
where it is within reach for cleaning. Locate sediment trap where trapped matter is
not likely to freeze. A sediment trap traps moisture and contaminants. This keeps
them from going into heater controls. If sediment trap is not installed or is installed
wrong, heater may not run properly.

11
IMPORTANT: Holdpressure regulator withwrench whenconnectingit togaspiping
and/or fittings.
Pressure
Regulator
Tee Joint
Reducer
Bushing to
1/8" NPT
1/8" NPT
Plug Tap
Test
Gauge
Connection *
Sediment
Trap
Tee Joint
Pipe
Nipple
Cap
Heater
Cabinet
1/2" NPT
Pipe Nipple
Figure 11 - Gas Connection
* AnA.G.A.design certified manualshutoffvalve with 1/8"NPTtap is anacceptable
alternative to test gauge connection. Purchase the optional A.G.A. design certified
manual shutoff valve from your dealer. See Accessories, page 25.
PRESSURE TESTING GAS SUPPLY PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG
1. Disconnect heater and its individual manual shutoff valve from gas supply
piping system. Pressures in excess of 1/2 PSIG will damage heater regulator.
2. Cap off open end of gas pipe where manual shutoff valve was connected.
3. Pressurize supply piping system by either using compressed air or
opening main gas valve located on or near gas meter.
CHECKING
GAS
CONNECTIONS
Continued
Note: Burner bracket
not shown for clarity
Manual
Shutoff
Valve *
From
Gas Meter
(4" W.C. to 10.5" W.C.
Pressure)
Ground Joint
Union
!
WARNING ICON G 001
WARNING
Test all gas piping and connections for leaks after installing or
servicing. Correct all leaks at once.
!
WARNING ICON G001
WARNING
Never use an open flame to check for a leak. Apply a mixture of
liquid soap and water to all joints. Bubbles forming show a leak.
Correct all leaks at once.
3" Minimum
CONNECTING
TO GAS
SUPPLY
Continued

12
4. Check all joints of gas supply piping system. Apply mixture of liquid soap and
water to gas joints. Bubbles forming show a leak.
5. Correct all leaks at once.
Test Pressures Equal To or Less Than 1/2 PSIG
1. Close manual shutoff valve (see Figure 12).
2. Pressurize supply piping system by either using compressed air or opening main
gas valve located on or near gas meter.
3. Check all joints from gas meter to manual shutoff valve (see Figure 13). Apply
mixture of liquid soap and water to gas joints. Bubbles forming show a leak.
4. Correct all leaks at once.
PRESSURE TESTING HEATER GAS CONNECTIONS
1. Open manual shutoff valve (see Figure 12).
2. Open main gas valve located on or near gas meter.
3. Make sure control knob of heater is in the OFF position.
4. Check all joints from manual shutoff valve to control valve (see Figure 13).
Apply mixture of liquid soap and water to gas joints. Bubbles forming show a
leak.
5. Correct all leaks at once.
6. Light heater (see Operating Heater, pages 13 through 17). Check the rest of the
internal joints for leaks.
7. Turn off heater (see To Turn Off Gas to Appliance, page 15 [Thermostat Model]
or page 18 [Non-Thermostat Models]).
8. Replace front panel.
Figure 13 - Checking Gas Joints
Manual
Shutoff
Valve
Gas Meter
ON
POSITION
OFF
POSITION
Figure 12 - Manual Shutoff Valve
Manual
Shutoff
Valve
Open
Closed
Control Valve Location
CHECKING
GAS
CONNECTIONS
Continued

13
OPERATING
HEATER
Thermostat Model
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING
If you do not follow these instructions exactly, a fire or
explosion may result causing property damage, personal
injury or loss of life.
!
WARNING ICON G 001
LIGHTING INSTRUCTIONS
1. STOP! Read the safety information above.
2. Make sure manual shutoff valve is fully open.
3. Turn control knob clockwise to the OFF position.
Clockwise
PILOT
LO
OFF
HI
IGNITOR
Ignitor Button Control Knob
Figure 14 - Control Knob In The OFF Position
Continued
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 department.
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 technician 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.

14
4. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the
floor. If you smell gas, STOP! Follow “B”in the safety information at the top of
page 13. If you don’t smell gas, go to the next step.
5. Turn control knob counterclockwise to the PILOT position. Press in
control knob for five (5) seconds (see Figure 14).
Note: You may be running this heater for the first time after hooking up to gas
supply. If so, the control knob may need to be pressed in for 30 seconds. This
will allow air to bleed from the gas system.
•If control knob does not pop up when released, contact a qualified
service person or gas supplier for repairs.
6. With control knob pressed in, push down and release ignitor button. This will
light pilot. The pilot is attached to the front of burner. The pilot can be seen
through the glass panel. If needed, keep pressing ignitor button until pilot lights.
Note: If pilot does not stay lit, refer to Troubleshooting, pages 20 through 23.
Also contact a qualified service person or gas supplier for repairs. Until
repairs are made, light pilot with match. To light pilot with match, see Manual
Lighting Procedure, page 15.
7. Keep control knob pressed in for 30 seconds after lighting pilot. After 30
seconds, release control knob.
Note: If pilot goes out, repeat steps 3 through 7. This heater has a safety
interlock system. Wait one (1) minute before lighting pilot again.
8. Turn control knob counterclockwise to desired heating level. The main
burner should light. Set control knob to any heat level between HI and LO.
C-clockwise
CAUTION
Do not try to adjust heating levels by using the manual shutoff valve.
!
WARNING ICON G 001
Pilot GRH/OV 007F
Thermocouple Pilot Burner
Ignitor Electrode
C-clockwise
Figure 15 - Pilot
OPERATING
HEATER
Thermostat Model
Continued

15
TO TURN OFF GAS TO APPLIANCE
Clockwise
Clockwise
Shutting Off Heater
1. Turn control knob clockwise to the OFF position.
2. Turn off all electric power to the appliance if service is to be performed.
Shutting Off Burner Only (pilot stays lit)
1. Turn control knob clockwise to the PILOT position.
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 HI and LO.
Note: The thermostat sensing bulb measures the temperature of air near the heater
cabinet. This may not always agree with room temperature (depending on housing
construction, installation location, room size, open air temperatures, etc.). Frequent
use of your heater will let you determine your own comfort levels.
MANUAL LIGHTING PROCEDURE
1. Remove front panel (see Figure 5, page 7).
2. Follow steps 1 through 5 under Lighting Instructions, pages 13 and 14.
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.
5. Replace front panel.
OPERATING
HEATER
Thermostat Model
Continued

16
OFF
HIGH
PILOT
LOW
IGNITOR
OPERATING
HEATER
Non-Thermostat
Models
FOR YOUR SAFETY READ BEFORE LIGHTING
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 department.
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 technician 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.
LIGHTING INSTRUCTIONS
1. STOP! Read the safety information above.
2. Make sure manual shutoff valve is fully open.
3. Turn control knob clockwise
Clockwise
to the OFF position.
Figure 16 - Control Knob In The OFF Position
Ignitor Button Control Knob
!
WARNING ICON G 001
WARNING
If you do not follow these instructions exactly, a fire or
explosion may result causing property damage, personal
injury or loss of life.

17
Pilot GRH/OV 007G
4. Wait five (5) minutes to clear out any gas. Then smell for gas including near the
floor. If you smell gas, STOP! Follow “B”in the safety information at the top of
page 16. If you don’t smell gas, go to the next step.
5. Press in control knob and turn counterclockwise
C-clockwise
to the PILOT position.
Keep control knob pressed in for five (5) seconds (see Figure 16).
Note: You may be running this heater for the first time after hooking up to gas
supply. If so, the control knob may need to be pressed in for 30 seconds. This
will allow air to bleed from the gas system.
•If control knob does not pop up when released, contact a qualified service
person or gas supplier for repairs.
6. With control knob pressed in, push down and release ignitor button. This will
light pilot. The pilot is attached to the front of burner. The burner and pilot are
located behind the heat shield. If needed, keep pressing ignitor button until pilot
lights.
Note: If pilot does not stay lit, refer to Troubleshooting, pages 20 through 23.
Also contact a qualified service person or gas supplier for repairs. Until repairs
are made, light pilot with match. To light pilot with match, see Manual
Lighting Procedures, page 18.
Continued
7. Keep control knob pressed in for 30 seconds after lighting pilot. After 30 sec-
onds, release control knob.
Note: If pilot goes out, repeat steps 3 through 7.
8. Turn control knob counterclockwise
C-clockwise
to the LOW position. The main
burner should light. Set control knob to any heat level between HIGH and LOW.
To turn control knob from LOW to a higher setting, press in the control knob
and turn counterclockwise
C-clockwise
.
Note: Both HIGH and LOW are locked positions. You must press in control
knob before turning it from these positions.
!
WARNING ICON G001
CAUTION
Do not try to adjust heating levels by using the manual shutoff
valve.
Thermocouple
Figure 17 - Pilot
Ignitor Electrode Pilot Burner
OPERATING
HEATER
Non-Thermostat
Models
Continued

18
TO TURN OFF GAS TO APPLIANCE
OPERATING
HEATER
Non-Thermostat
Models
Continued
Shutting Off Heater
1. Turn control knob clockwise
Clockwise
to the PILOT position.
2. Press in control knob and turn clockwise
Clockwise
to the OFF position.
3. Turn off all electric power to the appliance if service is to be performed.
Shutting Off Burner Only (pilot stays lit)
1. Turn control knob clockwise
Clockwise
to the PILOT position.
MANUAL LIGHTING PROCEDURE
1. Remove front panel (see Figure 3, page 7).
2. Follow steps 1 through 5 under Lighting Instructions, pages 16 and 17.
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.
5. Replace front panel.
Figure 19 - Incorrect Pilot Flame Pattern
GRH/OV 010BAD PILOT
GRH/OV 009GOOD PILOT
Thermocouple
Pilot Burner
Figure 18 - Correct Pilot Flame Pattern
Pilot Burner
Thermocouple
INSPECTING
BURNER
Check pilot flame pattern and burner flame pattern often.
PILOT FLAME PATTERN
Figure 18 shows a correct pilot flame pattern. Figure 19 shows an incorrect pilot
flame pattern. The incorrect pilot flame is not touching the thermocouple. This will
cause the thermocouple to cool. When the thermocouple cools, the heater will shut
down.

19
If pilot flame pattern is incorrect, as shown in Figure 19
•turn heater off (see To Turn Off Gas to Appliance, page 15 [Thermostat
Model] or page 18 [Non-Thermostat Models])
•see Troubleshooting, pages 20 through 23
BURNER FLAME PATTERN
Figure 20 shows a correct burner flame pattern. Figure 21 shows an incorrect
burner flame pattern. The incorrect burner flame pattern shows yellow tipping of
the flame. It also shows the flame higher than 1/2 the heat shield height.
INSPECTING
BURNER
Continued
NOTICE
Do not mistake orange flames with yellow tipping. Dirt or other fine
particles enter the heater and burn causing brief patches of orange
flame.
!
WARNING ICON G001
WARNING
If yellow tipping occurs, your heater could produce increased
levels of carbon monoxide. If burner flame pattern shows yellow
tipping, follow instructions at bottom of this page.
CORRECT FLAME PATTERN
AT HIGH POSITION
1/2 HEAT SHIELD
OR GLASS HEIGHT
Figure 20 - Correct Burner Flame Pattern
1/2 HEAT SHIELD
OR GLASS HEIGHT
INCORRECT FLAME PATTERN
AT HIGH POSITION
Yellow
Tipping
Figure 21 - Incorrect Burner Flame Pattern
If burner flame pattern is incorrect, as shown in Figure 21
•turn heater off (see To Turn Off Gas to Appliance, page 15 [Thermostat
Model] or page 18 [Non-Thermostat Models])
•see Troubleshooting, pages 20 through 23

20
CLEANING
AND
MAINTENANCE
TROUBLE-
SHOOTING
POSSIBLE
CAUSE
1. Ignitor electrode posi-
tioned wrong.
2. Ignitor electrode broken
3. Ignitor electrode not con-
nected to ignitor cable.
4. Ignitor cable pinched or
wet
5. Piezo ignitor nut is loose
6. Broken ignitor cable
7. Bad piezo ignitor
REMEDY
1. Replace ignitor.
2. Replace ignitor.
3. Reconnect ignitor cable.
4. Free ignitor cable if
pinched by any metal or
tubing.Keepignitorcable
dry.
5. Tightennutholdingpiezo
ignitor to heater cabinet.
Nut is located inside
heater cabinet at top.
6. Replace ignitor cable.
7. Replace piezo ignitor.
OBSERVED
PROBLEM
Whenignitorbuttonis
pressed, there is no
spark at ODS/pilot.
Note: All troubleshooting
items are listed in order of
operation.
!
WARNING ICON G001
WARNING
Turn off heater and let cool before cleaning.
!
WARNING ICON G 001
CAUTION
You must keep control areas, burner, and circulating air
passageways of heater clean. Inspect these areas of heater before
each use. Have heater inspected yearly by a qualified service
person. Heater may need more frequent cleaning due to excessive
lint from carpeting and bedding material, sawdust, cobwebs, etc.
!
WARNING ICON G001
WARNING
Turn off and unplug heater and let cool before servicing. Only a
qualified service person should service and repair heater.
!
WARNING ICON G001
CAUTION
Never use a wire, needle, or similar object to clean ODS/pilot. This
can damage ODS/pilot unit.
ODS/PILOT AND BURNER
•Use a vacuum cleaner, pressurized air, or small, soft bristled brush to clean.
CABINET
Air Passageways
•Use a vacuum cleaner or pressurized air to clean.
Exterior
•Use a soft cloth dampened with a mild soap and water mixture. Wipe the
cabinet to remove dust.