FMI HD18NRB Quick start guide
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UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
18" AND 24" REMOTE CONTROL READY MODELS
HD18NRB, HD18PRB, HD24NRB AND HD24PRB
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SAFETY
TABLE OF CONTENTS
Safety .................................................................. 2
Local Codes......................................................... 5
3URGXFW,GHQWL¿FDWLRQ........................................... 5
Optional Remote Control Accessories................. 5
Unpacking............................................................ 5
Air for Combustion and Ventilation ...................... 6
Product Features................................................. 6
Installation ........................................................... 8
Operation........................................................... 18
Inspecting Burners............................................. 20
Cleaning and Maintenance................................ 21
Replacement Parts............................................ 22
Wiring Diagram.................................................. 22
6SHFL¿FDWLRQV .................................................... 23
Service Hints ..................................................... 23
Technical Service............................................... 23
Troubleshooting................................................. 24
Parts .................................................................. 28
Accessories ....................................................... 30
Warranty .............................................Back Cover
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fected by carbon monoxide than others. These
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ence of alcohol and those at high altitudes.
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propane/LP gases are odorless. An odor-
making agent is added to the gas. The odor
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odor added to the gas can fade. Gas may be
present even though no odor exists.
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this heater or its controls can
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WARNING: Do not allow fans
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hand-held remote accessory,
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SAFETY
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of gas indicated on the rating plate. This
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other gases.
2. Do not place propane/LP supply tank(s)
inside any structure. Locate propane/LP
supply tank(s) outdoors (propane/LP units
only).
3. If you smell gas
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use any phone in your building
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plier’s instructions
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4. This heater shall not be installed in a bed-
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vented appliance. See Installing Damper
Clamp Accessory for Vented Operation
page 12. This gas log set may not be
installed as a vented appliance in a bed-
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of Massachusetts.
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6. Do not burn solid-fuel in a masonry or
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vent-free room heater is installed.
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burst. Make sure there are no obstructions
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instructions in Cleaning and Maintenance
page 21.
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lation to run properly. This heater has an
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heater if enough fresh air is not available.
See Air for Combustion and Ventilation,
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Troubleshooting, page 23.
11. Do not run heater
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used or stored
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12. Do not use this heater to cook food or burn
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the room heater and to replace any part
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14. Do not operate heater if any log is broken.
Do not operate heater if a log is chipped
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15. Turn heater off and let cool before servic-
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service or repair heater.
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home for long periods of time.
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use propane/LP fuel tank of less than 100
lb. capacity (propane/LP units only).
19. Provide adequate clearances around air
openings.
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124702-01B 5
PRODUCT IDENTIFICATION
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Six
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listing is required.
State of Massachusetts: The installation
must be made by a licensed plumber
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Massachusetts.
Sellers of unvented propane or natural
gas-fired supplemental room heaters
shall provide to each purchaser a copy of
527 CMR 30 upon sale of the unit.
Vent-free gas products are prohibited for
bedroom and bathroom installation in the
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LOCAL CODES
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use the latest edition of The National Fuel
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Batterymarch Park
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Note: Where listed vented decorative logs
are required, thermostat operation is not
permitted.
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1. Remove logs and heater base assembly
from carton.
Note: Do not pick up heater base assem-
bly by burners. This could damage heater.
Always handle base assembly by grate.
2. Remove all protective packaging applied
to logs and heater for shipment.
3. Check heater for any shipping damage. If
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LLC at 1-866-328-4537 for replacement
parts before returning to dealer.
www.fmiproducts.com 124702-01B6
AIR FOR COMBUSTION AND VENTILATION
PRODUCT FEATURES
23(5$7,21
This heater is clean burning. It requires no
outside venting. There is no heat loss out a
vent or up a chimney. Heat is generated by
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heater is designed for vent-free operation
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and approved to ANSI Z21.11.2 standard for
unvented heaters. State and local codes in
some areas prohibit the use of vent-free heat-
ers. This heater may also be operated as a
vented decorative (ANSI Z21.60) product by
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tion Sensing (ODS) safety shutoff system. The
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room heaters. The ODS/pilot shuts off the
heater if there is not enough fresh air.
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to light heater.
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homes as airtight as possible.
While it is good to make your home energy
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air must enter your home. All fuel-burning ap-
pliances need fresh air for proper combustion
and ventilation.
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venting of vented fuel-burning appliances.
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may provide enough fresh air for combustion
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additional fresh air.
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construction where:
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The National Fuel Gas Code, ANSI Z223.1/
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gregate input rating of all appliances installed
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of the aggregate input rating of all appliances
installed in that space. Rooms communicating
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DETERMINING FRESH-AIR FLOW
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(volume of space)
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volume of these rooms to the total volume
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support)
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9HQWIUHH¿UHSODFH __________ Btu/Hr
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Gas furnace __________ Btu/Hr
Vented gas heater __________ Btu/Hr
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outdoors and vents to the outdoors.
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_____ Btu/Hr (maximum the space can
support)
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space can support)
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Btu/Hr used)
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space because the actual Btu/Hr used is more
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adjoining room. If the extra space provides
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rooms. See Ventilation Air From Inside
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B. Vent room directly to the outdoors. See
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Figure 3 - Ventilation Air from Outdoors
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INSTALLATION
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124702-01B 11
INSTALLATION
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Minimum
Noncombustible
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Minimum Non-
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Material Height
Distances to
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Mantel
Top of
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Opening
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12"
8"
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20"
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24"
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24" Models
18" Model
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Minimum
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12" 15" 18" 20"
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8"
10"
12"
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for minimum clearances.
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MANTEL CLEARANCES
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mantel shelf. If you do not meet the clearances
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www.fmiproducts.com 124702-01B12
INSTALLATION
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14"
Min.
Combustible
Material
Noncombustible Material
Figure 8 - Minimum Fireplace Clearances
If Installed at Floor Level
Figure 9 - Minimum Fireplace Clearances
Above Combustible Flooring
Noncombustible Material
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(see Figure 9).
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structed of noncombustible material.
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6' to 15' 39 sq. in.
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package.
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supply an external regulator. The external
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www.fmiproducts.com
124702-01B 15
INSTALLATION
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Installation must include an equipment shutoff
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NPT tap must be upstream from heater (see
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the gas to the appliance.
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Apply pipe joint sealant lightly to male NPT
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going into pipe. Excess sealant in pipe could
result in clogged heater valves.
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We recommend that you install a sediment trap
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fuel supply and heater. Locate sediment
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contaminants. This keeps them from going
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not run properly.
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* Purchase the optional equipment shutoff
valve from your dealer.
** Minimum inlet pressure for purpose of input
adjustment.
Figure 14 - Gas Connection
Gas
Control
3” Minimum
Equipment Shutoff
9DOYH:LWK
NPT Tap*
Approved
Flexible
Gas Hose (if
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local codes)
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Pressure)
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www.fmiproducts.com 124702-01B16
INSTALLATION
Continued
CHECKING GAS CONNECTIONS
:$51,1*7HVWDOOJDVSLSLQJ
and connections, internal and
external to unit, for leaks after
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DOOOHDNVDWRQFH
WARNING: Never use an
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CAUTION: Make sure exter-
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DQGKHDWHU6HHJXLGHOLQHVXQ-
der Connecting to Gas Supply,
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main gas valve (control valve) and equip-
ment shutoff valve from gas supply piping
system. Pressures in excess of 1/2 psig
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opening propane/LP supply tank valve
for propane/LP gas or opening main gas
valve located on or near gas meter for
natural gas or using compressed air.
4. Check all joints of gas supply piping system.
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5. Correct all leaks at once.
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valve to gas supply. Check reconnected
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1. Close equipment shutoff valve (see
Figure 15).
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opening propane/LP supply tank valve
for propane/LP gas or opening main gas
valve located on or near gas meter for
natural gas or using compressed air.
3. Check all joints from gas meter to equipment
shutoff valve for natural gas or propane/
LP supply to equipment shutoff valve for
propane/LP (see Figures 16 and 17). Ap-
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4. Correct all leaks at once.
Figure 15 - Equipment Shutoff Valve
Open
Closed
Equipment
Shutoff
Valve
Figure 16 - Checking Gas Joints
(Propane/LP Model Shown)
Gas Control
Valve Location
Propane/LP
Supply Tank
Equipment
Shutoff Valve
Figure 17 - Checking Gas Joints (Natural
Gas Only)
Gas Meter
Gas Control Valve
Location
Equipment
Shutoff Valve
www.fmiproducts.com
124702-01B 17
INSTALLATION
Continued
35(6685(7(67,1*+($7(5*$6
CONNECTIONS
1. Open equipment shutoff valve (see
)LJXUHSDJH
2. Open main gas valve located on or near
gas meter for natural gas or open pro-
pane/LP supply tank valve.
3. Make sure control knob of heater is in the
OFF position.
4. Check all joints from equipment shutoff
valve to gas control (see Figures 16 and
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5. Correct all leaks at once.
6. Light heater (see Operation SDJH
Check all other internal joints for leaks.
7. Turn off heater (see To Turn Off Gas to
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INSTALLING LOGS
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CAUTION: After installa-
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With the heater set to HI, check
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It is very important to install these logs exactly
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1. Place rear log onto base. Holes in bottom
of log must seat over pins on base as
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2. Place center log onto base. Holes in bot-
tom of log must seat over pins on base
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Figure 19. Front log has cut outs for the
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of left crossover log. Match pin on top of
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crossover log.
Figure 18 - Installing Rear and Middle
Logs
Rear Log
Burner
Pin for
Hole in
Bottom
of Log
Center Log
Figure 19 - Installing Front Log
Front Log
Grate
www.fmiproducts.com 124702-01B18
INSTALLATION
Continued
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of center crossover log. Match pin on top
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of center crossover log.
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Figure 20. Log should rest on the grate and
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Figure 20 - Installing Left, Center and
Right Crossover Logs
Right
Crossover
Log
Left
Crossover
Log
Center
Crossover
Log
Square Peg
on Rear Log
Square
Peg on
Middle
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Peg on
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on Center
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OPERATION
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LIGHTING
INSTRUCTIONS
WARNING:
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erate heater with doors closed,
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FOR YOUR SAFETY
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WARNING: If you do not fol-
low these instructions exactly,
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WHAT TO DO IF YOU SMELL GAS
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124702-01B 19
OPERATION
Continued
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Note: Home owners generally prefer to oper-
ate their heater with the chimney damper
closed. This will put all the heat into the room.
However, there may be times you will desire
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the chimney damper (if you have one) fully or
partially to release some of the heat.
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page 20.
2. Make sure equipment shutoff valve is
fully open.
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come on automatically within
one minute when the selector
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4. Press in and turn control knob clock-
ZLVH to the OFF position (see
Figure 21).
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6. Press in and turn control knob counter-
FORFNZLVH to the PILOT position.
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(see Figure 21).
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supply. If so, the control knob may need
to be pressed in for 30 seconds or more.
This will allow air to bleed from the gas
system.
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The pilot is attached to the front burner. If
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pilot lights.
Figure 21 - Control Knob and Ignitor
Button Location (Shown as Supplied, No
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Note: If pilot does not stay lit, contact a
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repairs. Until repairs are made, light pilot
with match. To light pilot with match, see
Manual Lighting Procedure, page 20.
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release control knob.
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person or gas supplier for repairs.
Note: If pilot goes out, repeat steps 4
through 8.
9. Slightly push in and turn control knob coun-
WHUFORFNZLVH to the ON position.
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Note: AUTO is only functional when
using GWMT1 or GWMS2 optional ac-
cessories.
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12. To leave pilot lit and shut off burners only:
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in the OFF position.
CAUTION: Do not try to ad-
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WARNING: Make sure the se-
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come on automatically with selec-
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prevent draining battery.
3. Close equipment shutoff valve (see Figure
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OPERATION
Continued
Figure 22 - Pilot
(Propane/LP)
Ignitor
Electrode
Pilot
Burner
Figure 23 - Pilot
(Natural)
Pilot Burner
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Periodically inspect these holes for any block-
age and clean if needed. Blocked air holes
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patterns often.
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)LJXUHVKRZVDFRUUHFWSLORWÀDPHSDWWHUQ
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in Figure 32
WXUQKHDWHURIIVHHTo Turn Off Gas to Ap-
plianceSDJH
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and have no yellow or orange color.
MANUAL LIGHTING
352&('85(
)ROORZVWHSVWKURXJKXQGHULighting
InstructionsSDJHV
2. Depress control knob and light pilot
ZLWKPDWFK
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DIWHUOLJKWLQJSLORW$IWHUVHFRQGVUHOHDVH
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under Lighting InstructionsSDJH
INSPECTING BURNERS
Figure 24 - Correct Pilot Flame Pattern
(Your pilot may vary from pilot shown)
Pilot Burner Thermocouple
Pilot Burner Thermocouple
Figure 25 - Incorrect Pilot Flame Pattern
(Your pilot may vary from pilots shown)
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turn off heater and let cool. Remove blockage.
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