Desa Comfort Glow RFP28TC Quick start guide

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VENT-FREE PROPANE/LP
GAS RADIANT FLAME®HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
®
RFP28TC
14,000 to 28,000 Btu/Hr
withThermostat
"C" Model Shown with Optional
Mantel featuring
Built-in Base
WARNING: If the information in this manual is
not followed exactly, a fire or explosion may
result causing property damage, personal in-
jury, or loss of life.
— Donotstoreorusegasolineorotherflammable
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.
• 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.
— Installation and service must be performed by
a qualified installer, service agency, or the gas
supplier.
This appliance may be installed in an aftermarket* manufactured (mobile) home, where not prohibited
by state or local codes.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
WARNING: This is an
unvented gas-fired heater. It
uses air (oxygen) from the
room in which it is installed.
Provisionsforadequatecom-
bustionmustbeprovided.Re-
fer to page 2 of this manual.
WARNING: Improper instal-
lation,adjustment,alteration,
service, or maintenance can
causeinjuryorpropertydam-
age. Refer to this manual for
correct installation and op-
erational procedures. For as-
sistance or additional infor-
mation consult a qualified in-
staller,serviceagency,orthe
gas supplier.

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103509
VENT-FREE RADIANT FLAME®HEATER
1. This appliance is only for use with the
typeof gasindicatedon therating plate.
Thisappliance isnotconvertible for use
with other gases.
2. Do not placepropane/LP supply tank(s)
inside any structure. Locate propane/
LP supply tank(s) outdoors.
3. 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
• ifyou cannotreach your gassupplier,
call the fire department
4. This heater shall not be installed in a
bedroom or bathroom.
5. Never install the heater
• in a recreational vehicle.
• wherecurtains, furniture,clothing,or
otherflammable objectsare lessthan
36inches fromthe front,top, or sides
of the heater.
• as a fireplace insert.
• in high traffic areas.
• in windy or drafty areas.
6. This heater needsfresh, outsideair ven-
tilation to run properly.This heater has
an oxygen depletion sensor (ODS) pi-
lot light safety system. The ODS shuts
down the heater if not enough fresh air
is available. See Air for Combustion
and Ventilation, pages 6 through 8.
7. If heater shuts off, do not relight until
you provide fresh, outside air. If heater
keeps shutting off, have it serviced.
8. Do not run heater
• where flammable liquids or vapors
are used or stored.
• under dusty conditions.
9. Never place any objects on the heater.
WARNING ICON G 001
WARNINGS
IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble, oper-
ate, or service this heater. Im-
proper use of this heater can
causeseriousinjuryordeathfrom
burns, fire, explosion, electrical
shock,andcarbonmonoxidepoi-
soning.
DANGER: Carbon monoxide
poisoning may lead to death!
SAFETY
INFORMATION
Carbon Monoxide Poisoning: Early
signs of carbon monoxide poisoning re-
semble the flu, with headaches, dizziness,
ornausea.Ifyouhavethesesigns,theheater
maynotbeworking properly.Getfreshair
atonce!Haveheaterserviced.Somepeople
are more affected by carbon monoxide than
others. These include pregnant women,
peoplewithheartor lungdiseaseoranemia,
those under the influence of alcohol, and
those at high altitudes.
Propane/LPGas:Propane/LPgasisodor-
less. An odor-making agent is added to
propane/LP gas. The odor helps you detect
a propane/LP gas leak. However, the odor
addedtopropane/LPgascanfade.Propane/
LP gas may be present even though no odor
exists.
Make certain you read and understand all
warnings.Keepthismanualforreference.It
isyourguidetosafeandproperoperationof
this heater.
WARNING: Any change to
this heater or its controls can be
dangerous.
10. Surface of heater becomes very hot
when running heater.Keep childrenand
adults away from hot surface to avoid
burns or clothing ignition. Heater will
remain hot for a time after shutdown.
Allow surface to cool before touching.
11. Carefully supervise young children
when theyare in sameroomwith heater.
12. Make surescreen is inplace beforerun-
ning heater.
13. Before usingfurniture polish,wax, car-
pet cleaner, or similar products, turn
heater off. If heated, the vapors from
theseproducts maycreate awhite pow-
der residue within burner box or on
adjacent walls or furniture.
14. Do not use heater if any part has been
under water. Immediately call a quali-
fied service technician to inspect the
room heater and to replace any part of
the control system and any gas control
which has been under water.
15. Turn off and unplug heater and let cool
beforeservicing.Onlyaqualifiedservice
person should service and repair heater.
16. Operating heater above elevations of
4,500 feet may cause pilot outage.
WARNING: Do not use a
blower insert, heat exchanger
insert, or other accessory not
approvedforusewiththisheater.
17. To prevent performance problems, do
not use propane fuel tank of less than
100 lbs. capacity.

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103509
OWNER’S MANUAL
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PRODUCT IDENTIFICATION
LOCAL CODES
Install and use heater with care. Follow all
local codes. In the absence of local codes, use
the latest edition of The National Fuel Gas
Code ANS 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 Gas Log Propane/LP Gas Space Heater
Ignitor Button
Screen
Front
Panel
Heater
Cabinet
Log
Lighting and
Warning
Plates
UNPACKING
1. Remove heater from carton.
2. Remove all protective packaging ap-
plied to heater for shipment.
3. Make sure your heater includes two
hardware packets.
4. Check heater for any shipping damage.
If heater is damaged, promptly inform
dealer where you bought heater.
PRODUCT
FEATURES
Operation
This heater is clean burning. It requires no
outside venting. This heater has been tested
and approved ANS Z21.11.2 standard for
unvented heaters. State and local codes in
some areas prohibit the use of vent-free
heaters.
Safety Pilot
This heater has a pilot with an Oxygen
Depletion Sensor Shutoff System (ODS).
TheODS/pilotisarequiredfeatureforvent-
free room 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
This heater has a thermostat sensing bulb
andacontrolvalve.Thisresultsinthegreat-
est heater comfort. This can also result in
lower gas bills.
Control Knob
Note: Do not
remove lighting
and warning
plates from heater
CAUTION:Do notremovethe
metal data plates attached to the
heater base assembly. The data
platescontainimportantwarranty
information.

4
103509
VENT-FREE RADIANT FLAME®HEATER
WARNING: Always have
burnershieldandscreeninplace
beforeoperatingheater.Thispre-
ventsexcessivetemperatureson
heater surfaces.
Failure to position the parts in
accordance with these diagrams
or failure to use only parts spe-
cificallyapprovedwiththisheater
mayresultinpropertydamageor
personal injury.
Burner Shield
Screen
Front Panel
Deflector
Log
Retaining
Brackets
Log
Truss Head
Screw
Brass
Front Trim Screw
Screw
Heater Cabinet
Nut
Attaching Brass Front Trim to
Front Panel
1. Locate brass front trim in brass trim
package.
2. Slide the head of twotruss-head screws
from hardware packet into each end of
brass front trim (see Figure 5).
3. Line up screwswith holes infront panel
(see Figure 4). Insert screws in holes.
Attach nuts from inside of front panel.
Tighten with wrench.
Truss-Head
Screw Nut
Front Panel
Figure 5 - Attaching Brass Front Trim to
Front Panel
Brass Front
Trim
Figure 4 - Assembling Heater
ASSEMBLY
ASSEMBLING HEATER
Tools Required:
• Phillips screwdriver
• 5/16" hex wrench
• slotted screwdriver
Removing Front Panel Of Heater
1. Remove two screws near bottom cor-
ners of front panel with Phillips screw-
driver.
2. Pull bottom offront panel forward,then
down (see Figure 2) .
Figure2-RemovingFrontPanelofHeater
Installing Log
Note: For easier installation, lay heater on
its back.
1. Remove log from inside top of heater.
Discard protective packaging.
2. Attach ignitor cable to piezo ignitor
(see Figure 3).
3. With Phillips screwdriver, remove four
screws holding screen in place. Re-
move screen.
4. Gently slide log between log retaining
bracketsondeflector assembly(seeFig-
ure 4). The log should fit firmly against
bottom of log retaining brackets.
5. Reattach screen using four screws re-
moved in step 3.
Piezo Ignitor
Ignitor Cable
Figure3-AttachingIgnitorCabletoPiezo
Ignitor

5
103509
OWNER’S MANUAL
Assembling and Attaching
Brass Trim
1. Remove packaging from three remain-
ing pieces of brass trim.
2. Locate four brass screws, two adjust-
ing plates with set screws, and two
shims in the hardware packet.
3. Align shim under adjusting plate as
shown in Figure 6.
4. Slide one end of adjusting plate/shim
inslot onmitered edgeof top brasstrim
(see Figure 6).
5. Slide other end of adjusting plate/shim
in slot on mitered edge of side brass
trim (see Figure 6).
6. While firmly holding edges of brass
trim together, tighten both set screws
on the adjusting plate with slotted
screwdriver.
7. Repeat steps 1 through 6 for other side.
8. Place the assembled trim on front of
heater cabinet.Attach on top and sides
withfour brass screwsincluded in hard-
ware package (see Figure 7).
9. Reattach front panel to heaterif youare
going to mount the heater to the base.
Do not reattach front panel at this time
ifyou aregoingto mountheater to wall.
Side
Brass
Trim
Top
Brass
Trim
Slot
Mitered Edge
Slot
Figure 6 - Assembling Brass Trim
Shim
Set Screws
Adjusting
Plate
Screws
Assembled
Brass Trim
ASSEMBLY
Continued
Figure7 -Attaching BrassTrim to Heater

6
103509
VENT-FREE RADIANT FLAME®HEATER
WARNING: This heater shall
notbeinstalledinaconfinedspace
or unusually tight construction
unless provisions are provided
foradequatecombustionandven-
tilation air. Read the following in-
structions to insure proper fresh
air for this and other fuel-burning
appliances in your home.
Today’s homes are built more energy effi-
cient than ever. New materials, increased
insulation, and new construction methods
helpreduceheatlossinhomes.Homeowners
weatherstripandcaulkaround windows and
doorstokeepthecoldairoutandthewarmair
in.Duringheatingmonths,homeownerswant
their homes as airtight as possible.
While it is good to make your home energy
efficient,yourhomeneedstobreathe.Fresh
air must enter your home. All fuel-burning
appliances need fresh air for proper com-
bustion and ventilation.
Exhaustfans,fireplaces,clothesdryers,and
fuel burning appliances draw air from the
house to operate. You must provide ad-
equate fresh air for these appliances. This
will insure proper venting of vented fuel-
burning appliances.
AIR FOR
COMBUSTION AND
VENTILATION
Confined and Unconfined Space
The National Fuel Gas Code (ANS Z223.1,
1992 Section 5.3) defines a confined space
as a space whose volume is less than 50
cubicfeetper1,000Btuperhour(4.8m3per
kw) of the aggregate input rating of all
appliances installed in that space and an
unconfiningspaceasaspacewhosevolume
is not less than 50 cubic feet per 1,000 Btu
per hour (4.8 m3per kw) of the aggregate
inputratingofallappliancesinstalledinthat
space.Roomscommunicating directly with
the space in which the appliances are in-
stalled*, through openings not furnished
with doors, are considered a part of the
unconfined space.
This heater shall not be installed in a con-
fined space or unusually tight construction
unlessprovisions are providedfor adequate
combustion and ventilation air.
*Adjoiningroomsarecommunicatingonly
iftherearedoorlesspassagewaysorventila-
tion grills between them.
PROVIDING ADEQUATE
VENTILATION
The following are excerpts from National
Fuel Gas Code. NFPA 54/ANS Z223.1, Sec-
tion5.3,AirforCombustionandVentilation.
Allspacesinhomesfallintooneofthethree
following ventilation classifications:
1. Unusually Tight Construction
2. Unconfined Space
3. Confined Space
The information on pages 6 through 7 will
help you classify your space and provide
adequate ventilation.
Unusually Tight Construction
The air that leaks around doors and win-
dows may provide enough fresh air for
combustion and ventilation. However, in
buildings of unusually tight construction,
you must provide additional fresh air.
Unusually tight construction is de-
fined as construction where:
a. walls and ceilings exposed to the
outside atmosphere have a con-
tinuous water vapor retarder with
a rating of one perm (6 x 10-11 kg
per pa-sec-m2) or less with open-
ings gasketed or sealed and
b. weather stripping has been
added on openable windows and
doors and
c. caulking or sealants are applied
to areas such as joints around
window and door frames, be-
tween sole plates and floors,be-
tween wall-ceiling joints, be-
tween wall panels, at penetra-
tionsfor plumbing,electrical,and
gas lines, and at other openings.
If your home meets all of the three
criteria above, you must provide ad-
ditional fresh air. See Ventilation Air
From Outdoors , page 8.
If your home does not meet all of the
three criteria above, proceed to De-
termining Fresh-Air Flow For Heater
Location, page 7.

7
103509
OWNER’S MANUAL
AIR FOR
COMBUSTION AND
VENTILATION
Continued
DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION
Determining if You Have a Confined or Unconfined Space
Use this worksheet to determine if you have a confined or unconfined space.
Space:Includestheroominwhichyouwillinstallheaterplusanyadjoiningroomswithdoorlesspassagewaysorventilationgrillsbetween
the rooms.
1. Determine the volume of the space (length x width x height).
Length x Width x Height = _____________________cu. ft. (volume of space)
Example: Space size 20 ft. (length) x 16 ft. (width) x 8 ft. (ceiling height) = 2560 cu. ft. (volume of space)
If additional ventilation to adjoining room is supplied with grills or openings, add the volume of these rooms to the total volume of
the space.
2. Divide the space volume by 50 cubic feet to determine the maximum Btu/Hr the space can support.
_________________ (volume of space) ÷50 cu. ft. = (Maximum Btu/Hr the space can support)
Example: 2560 cu. ft. (volume of space) ÷50 cu. ft. =51.2 or 51,200 (maximum Btu/Hr the space can support)
3. Add the Btu/Hr of all fuel burning appliances in the space.
Vent-free heater ________________ Btu/Hr
Gas water heater* ________________ Btu/Hr
Gas furnace ________________ Btu/Hr
Vented gas heater ________________ Btu/Hr
Gas fireplace logs ________________ Btu/Hr
Other gas appliances* + _______________ Btu/Hr
Total = _______________ Btu/Hr
* Do not include direct-vent gas appliances. Direct-vent draws combustion air from the outdoors and vents to the outdoors.
4. Compare the maximum Btu/Hr the space can support with the actual amount of Btu/Hr used.
________________________________ Btu/Hr (maximum the space can support)
________________________________ Btu/Hr (actual amount of Btu/Hr used)
Example: 51,200 Btu/Hr (maximum the space can support)
58,000 Btu/Hr (actual amount of Btu/Hr used)
ThespaceintheaboveexampleisaconfinedspacebecausetheactualBtu/HrusedismorethanthemaximumBtu/Hrthespacecansupport.
You must provide additional fresh air. Your options are as follows:
A. Rework worksheet, adding the space of an adjoining room. If the extra space provides an unconfined space, remove door to adjoin-
ing room or add ventilation grills between rooms. See Ventilation Air From Inside Building, page 8.
B. Vent room directly to the outdoors. See Ventilation Air From Outdoors, page 8.
C. Install a lower Btu/Hr heater, if lower Btu/Hr size makes room unconfined.
If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support, the space is an unconfined space. You will need no
additional fresh air ventilation.
Example: Gas water heater 30,000 Btu/Hr
Vent-free heater +28,000 Btu/Hr
Total =58,000 Btu/Hr
WARNING:Iftheareainwhichtheheatermaybeoperatedissmallerthanthatdefinedasanunconfinedspace
or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one of
the methods described in the National Fuel Gas Code, ANS Z223.1, 1992, Section 5.3, or applicable local codes.
Continued

8
103509
VENT-FREE RADIANT FLAME®HEATER
AIR FOR
COMBUSTION AND
VENTILATION
Continued
Figure 8 - Ventilation Air from Inside Building
Or
Remove
Door into
Adjoining
Room,
Option 3
Ventilation Grills
Into Adjoining Room,
Option 2
12"
12"
Ventilation
Grills
into Adjoining
Room,
Option 1
VENTILATION AIR
Ventilation Air From Inside
Building
Thisfreshairwouldcomefromanadjoining
unconfined space. When ventilating to an
adjoining unconfined space, you must pro-
vide two permanent openings: one within
12" of the ceiling and one within 12" of the
floor on the wall connecting the two spaces
(seeoptions1and2,Figure8).Youcanalso
remove door into adjoining room (see op-
tion 3, Figure 8). Follow the National Fuel
Gas Code NFPA 54/ANS Z223.1, Section
5.3, Air for Combustion and Ventilation for
required size of ventilation grills or ducts.
WARNING: Rework work-
sheet, adding the space of the
adjoiningunconfinedspace.The
combined spaces must have
enough fresh air to supply all
appliances in both spaces.
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation
grills or ducts. You must provide two per-
manent openings: one within 12" of the
ceiling and one within 12" of the floor.
Connecttheseitemsdirectlytotheoutdoors
orspacesopentotheoutdoors.Thesespaces
include attics and crawl spaces.
IMPORTANT: Donotprovideopenings for
inlet or outlet air into attic if attic has a
thermostat-controlledpowervent.Heatedair
enteringtheatticwillactivatethepowervent.
Figure 9 - Ventilation Air from Outdoors
Outlet
Air Ventilated
Attic
Outlet
Air
Inlet
Air
Inlet Air Ventilated
Crawl Space
To
Crawl
Space
To Attic

9
103509
OWNER’S MANUAL
36"
5"
FLOOR
CEILING
Minimum
Minimum
Of Carpet
Combust
6"
Minimum
From
Sides Of
Heater
Left
Side Right Side
Figure 10 - Mounting Clearances As
Viewed From Front of Heater
CAUTION: If you install the
heater in a home garage
• heaterpilotandburnermustbe
at least 18 inches above floor.
• locateheaterwheremovingve-
hicle will not hit it.
Forconvenienceandefficiency,installheater
• where there is easy access for operation,
inspection, and service.
• in coldest part of room.
An optional fan kit is available from your
dealer. See Accessories, page 25. If plan-
ningtousefan,locateheaternearan electri-
cal outlet.
INSTALLATION
CHECK GAS TYPE
Useonlypropane/LPgas.Ifyourgassupply
isnotpropane/LP,donotinstallheater.Call
dealer where you bought heater for proper
type heater.
INSTALLATION ITEMS
Beforeinstallingheater,makesureyouhave
the items listed below.
• external regulator (supplied by installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• manual shutoff valve *
• ground joint union
• test gauge connection *
• sediment trap
• tee joint
• pipe wrench
* AnA.G.A.design-certifiedmanualshutoff
valve with 1/8" NPT tap is an acceptable
alternative to test gauge connection. Pur-
chase the optional A.G.A. design-certified
manual shutoff valve from your dealer. See
Accessories, page 25.
NOTICE: This heater is intended
foruseassupplementalheat. Use
this heater along with your pri-
mary heating system. Do not in-
stall this heater as your primary
heatsource. Ifyouhave acentral
heating system, you may run
system’scirculatingblowerwhile
usingheater.Thiswillhelpcircu-
late the heat throughout the
house. In the event of a power
outage, you can use this heater
as your primary heat source.
Youcanlocateheateronfloor.Theoptional
hearth base is needed. You can also install
theoptionaldecorativemantelontheheater
(some mantels require hearth base).
IMPORTANT: Only use optional mantel
and hearth base specified in this manual.
Purchase the optional mantel and hearth
base from your dealer. See Accessories,
page 25.
The heater may also be mounted on a wall.
Youcannotuseoptionalmantelifmounting
heater on a wall.
CAUTION: This heater cre-
ates warm air currents. These
currents move heat to wall sur-
faces next to heater. Installing
heater next to vinyl or cloth wall
coverings or operating heater
where impurities (such as to-
bacco smoke, aromatic candles,
cleaning fluids, oil or kerosene
lamps, etc.) in the air exist, may
discolor walls.
WARNING: Never install the
heater
• in a bedroom or a bathroom
• in a recreational vehicle
• where curtains, furniture,
clothing, or other flammable
objectsarelessthan36inches
from the front, top, or sides of
the heater
• as a fireplace insert
• in high traffic areas
• in windy or drafty areas
IMPORTANT: Vent-freeheatersaddmois-
ture to the air. Although this is beneficial,
installing heater in rooms without enough
ventilation air may cause mildew to form
from too much moisture. See Air for Com-
bustion and Ventilation, pages 6 through 8.
LOCATING HEATER
WARNING:Maintainthemini-
mumclearancesshowninFigure
10. If you can, provide greater
clearancesfromfloor,ceiling,and
joining wall.
NOTICE: A qualified service per-
son must install heater. Follow
all local codes.
Minimum To
Top Surface
Of Carpeting,
Tile Or Other
Combustible
Material
Continued

10
103509
VENT-FREE RADIANT FLAME®HEATER
Thermostat
Sensing Bulb
Clamp
Figure11-AttachingThermostatSensing
Bulb
INSTALLATION
Continued
INSTALLATION OPTIONS
There are three options for mounting this
heater.
A. Mounting heater to wall
B. Mounting heater tooptional hearth base
C. Mounting heater with optional hearth
base to optional mantel
A. MOUNTING HEATER TO
WALL
Mounting Bracket
Themountingbracketislocatedonbackpanel
of heater. It has been taped there for shipping.
Remove mounting bracket from back panel.
Figure 12 - Mounting Bracket Location
Mounting
Bracket
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
providesthestrongesthold.Insertmounting
screws through mounting bracket and into
wall studs.
AttachingToWallAnchor Thismethod
allows you to attach mounting bracket to
hollow walls (wall areas between studs) or
to solid walls (concrete or masonry).
Decidewhichmethodbettersuitsyourneeds.
Eithermethodwillprovideasecureholdfor
the mounting bracket.
Marking Screw Locations
1. Tape mounting bracket to wall where
heater will be located. Make sure
mounting bracket is level.
WARNING:Maintainminimum
clearancesshownin Figure13.If
you can, provide greater clear-
ancesfromfloorandjoiningwall.
2. Mark screw locations on wall (see Fig-
ure 13).
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.
Figure13- Mounting BracketClearances
20 3/4"
Min.
11"
Min. 16"
Adjoining Wall
Only Insert Mounting
Screws Through Last
Hole On Each End
Floor
Attaching Mounting Bracket to
Wall
Note: Wall anchors, mounting screws, and
spacers are in hardware package. The hard-
ware package is provided with heater.
Attaching To Wall Stud Method
Forattachingmountingbrackettowallstuds.
1. Drill holes at marked locations using
9/64" drill bit.
2. Place mounting bracket onto wall.Line
uplast holeon eachend ofbracket with
holes drilled in wall.
3. Insert mounting screwsthrough bracket
and into wall studs.
4. Tighten screws until mounting bracket
is firmly fastened to wall studs.
THERMOSTAT SENSING
BULB
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 Fig-
ure 2, page 4).
2. Locate thermostat sensing bulb just
under burner assembly.
IMPORTANT: Attach thermostat sensing
bulb to back of heater for proper operation.
Attaching Thermostat Sensing
Bulb
1. Remove thermostat sensing bulb from
holders inside heater. Route through
slot opening in bottom of heater.
2. Place clamp onthermostat sensingbulb
as shown in Figure 11. Clamp is pro-
vided in hardware package.
3. Snap clamp into upper mounting hole
as shown in Figure 11. Mounting hole
is located on lower left edge on back
of heater. Make sure the thermostat
sensing bulb is pointing up.