FMI H18NB Quick start guide

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UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
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18" AND 24" VARIABLE MANUALLY-CONTROLLED
MODELS H18NB, H18PB, H24NB AND H24PB
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TABLE OF CONTENTS
Safety .................................................................. 2
3URGXFW,GHQWL¿FDWLRQ........................................... 4
Local Codes......................................................... 5
Unpacking............................................................ 5
Product Features................................................. 5
Air For Combustion and Ventilation ..................... 5
Installation ........................................................... 8
Operation .......................................................... 17
Inspecting Burners............................................. 19
Cleaning and Maintenance................................ 19
Troubleshooting................................................. 21
6SHFL¿FDWLRQV .................................................... 25
Technical Service............................................... 25
Service Hints ..................................................... 25
Replacement Parts............................................ 25
Parts .................................................................. 26
Accessories ....................................................... 28
Warranty ..............................................Back Cover

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will remain hot for a time after
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gas indicated on rating plate. This appli-
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tilation to run properly. This heater has an
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heater if not enough fresh air is available.
See Air for Combustion and Ventilation,
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Troubleshooting,page 20.
13. Do not run heater
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used or stored
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14. Do not use this heater to cook food or burn
paper or other objects.
15. Do not use heater if any part has been ex-
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the room heater and to replace any part
of the control system and any gas control
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16. Do not operate heater if any log is broken.
Do not operate heater if a log is chipped
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17. Turn heater off and let cool before servic-
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service and repair heater.
18. Operating heater above elevations of
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openings.
PRODUCT
IDENTIFICATION
2. Do not place propane/LP supply tank(s)
inside any structure. Locate propane/LP
supply tank(s) outdoors (propane/LP
units only).
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use of a propane/LP tank of less than
100 lbs. capacity is not recommended
(propane/LP units only).
4. If you smell gas
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use any phone in your building
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supplier’s instructions
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5. This heater shall not be installed in a
bedroom or bathroom unless installed as
a vented appliance (see Installing Damper
Clamp Accessory for Vented Operation
page 11). This gas log set may not be
installed as a vented appliance in a bed-
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of Massachusetts.
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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9. This log heater is designed to be smoke-
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Note: During initial operation, slight smok-
ing could occur due to log curing and
heater burning manufacturing residues.
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the instructions in Cleaning and Mainte-
nance, page 18.
Heater Base
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Grate

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Batterymarch Park
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Note: Where listed vented decorative logs are
required, thermostat models are not permitted.
PRODUCT FEATURES
AIR FOR COMBUSTION AND VENTILATION
UNPACKING
LOCAL CODES
CAUTION: Do not remove the
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1. Remove log 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 log and heater for shipment.
3. Check heater for any shipping damage. If
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damper closed. It has been tested and
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homes as airtight as possible.
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air must enter your home. All fuel-burning ap-
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provide to each purchaser a copy of 527
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bedroom and bathroom installation in the
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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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the rooms.
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(volume of space)
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volume of these rooms to the total volume
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mum Btu/Hr the space can support)
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support)
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in the space.
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Other gas appliances* + _________ Btu/Hr
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Example:
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used.
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support)
_______ Btu/Hr (actual amount of Btu/Hr
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space can support)
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Btu/Hr used)
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adjoining room. If the extra space provides an
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See Ventilation Air From Inside Building
page 7.
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fresh air ventilation.
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Figure 2 - Ventilation Air from Inside
Building
Or
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3
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WARNING: Seal any fresh
air vents or ash clean-out doors
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INSTALLATION
WARNING: Never install the
heater
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 where curtains, furniture, cloth-
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CAUTION:Thisheatercreates
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move heat to wall surfaces next
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IMPORTANT:Vent-free heaters add moisture
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moisture. See Air for Combustion and Ventila-
tionSDJH
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Use only the correct gas type (natural or
propane/LP) for your unit. If your gas sup-
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type heater.
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www.fmiproducts.com
124465-01B 9
INSTALLATION AND CLEARANCES
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WARNING: Maintain the
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5HDU:LGWKPHDVXUHGDWGHSWK
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Minimum Clearances For Side
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Example:7KHIDFHRIDPDQWHOERRNVKHOI
etc. is made of combustible material and
protrudes 3 1/2IURPWKHZDOO7KLVFRP-
EXVWLEOHPDWHULDOPXVWEHIURPWKHVLGH
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Note: When installing your gas logs into
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manufacturer’s instructions for minimum
clearances to combustible materials.
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opening to the ceiling should not be less
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Figure 4 - Minimum Clearance for
Combustible to Wall
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INSTALLATION
Continued
NOTICE: Manual control heaters
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If so, you must always run heater
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InstallingDamperClampAccessory
for Vented OperationSDJH
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Clearances
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Note: If using a mantel, proceed to If Using
Mantel, page 10. If not using a mantel, follow
the information below.
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must have noncombustible material behind it.
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up. See Figure 5 for minimum clearances.
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See Between 8" and 12"
above. If you cannot extend
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Heat Resistant
Material
(A)
Figure 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace

www.fmiproducts.com 124465-01B10
Minimum
Noncombustible
Material
Minimum
Noncombustible
Material Height
Distances to
Underside of
Mantel
Top of
Fireplace
Opening
Underside of
Mantel Shelf
Mantel Shelf
8"
(A)
8" 14" 17" 20"
All minimum
distances are
in inches
Log Set
All Models
2 1/2"
6"
8"
10"
IMPORTANT: If you cannot meet these mini-
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ing Damper Clamp Accessory for Vented
OperationSDJH
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PDWHULDOVVXFKDVVODWHPDUEOHWLOHHWFPXVW
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must have noncombustible material behind it.
Noncombustible material must extend at least
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minimum clearances.
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ZLWKFKLPQH\ÀXHGDPSHURSHQ*RWRInstall-
ing Damper Clamp Accessory for Vented
Operation, page 11.
INSTALLATION
Continued
MANTEL CLEARANCES
In addition to meeting noncombustible mate-
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mantel shelf. If you do not meet the clearances
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Follow all minimum clearances
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NOTICE: If your installation does
not meet the minimum clear-
ances shown, you must do one
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Figure 6 - Minimum Mantel Clearances
Without Using Hood

www.fmiproducts.com
124465-01B 11
INSTALLATION
Continued
14"
Min.
Combustible
Material
Noncombustible Material
Hearth
5"
Min.
Combustible
Material
Figure 8 - Minimum Fireplace Clearances
Above Combustible Flooring
Figure 7 - Minimum Fireplace Clearances
If Installed at Floor Level
FLOOR CLEARANCES
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must maintain the minimum distance of
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Figure 8).
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pliance must be installed only in a solid-fuel
burning fireplace with a working flue and
constructed of noncombustible material.
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There are three reasons for operating your
heater in the vented mode.
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vent-free operation.
2. State or local codes do not permit vent-
free operation.
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clamp accessory.
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opening you must provide. Attach damper
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Figure 9 - Attaching Damper Clamp
Manufactured
)LUHSODFH
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Damper
Damper
Clamp
Damper
Damper

www.fmiproducts.com 124465-01B12
INSTALLATION
Continued
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CAUTION: Do not remove the
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not, heater will move when you
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Installation Items Needed
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 DSSURYHGÀH[LEOHJDVKRVHQRWSURYLGHG
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provided)
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 ÀDWKHDGVFUHZGULYHU
1. Apply pipe joint sealant lightly to male
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JDVUHJXODWRU&RQQHFWDSSURYHGÀH[LEOH
gas hose to gas regulator of heater (see
Figure 10).
IMPORTANT: +ROG JDV UHJXODWRU ZLWK
ZUHQFKZKHQFRQQHFWLQJÀH[LEOHJDVKRVH
 /RFDWH PDVRQU\ VFUHZV LQ KDUGZDUH
package.
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4. Place log in proper position on heater base
(see Installing Logs, page 15).
5. Center heater base and logs front-to-front
DQGVLGHWRVLGHLQ¿UHSODFH
 &DUHIXOO\ UHPRYH ORJ ZLWKRXW PRYLQJ
heater base.
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mounting brackets (see Figure 11). If
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VFUHZORFDWLRQVLQPRUWDUMRLQWRIEULFNV
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drill bit.
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XVLQJWZRPDVRQU\VFUHZVLQKDUGZDUH
package) (see Figure 11).
Figure 11 - Attaching Base Assembly to
Fireplace Floor
Heater Gas
Regulator
Flexible Gas Hose
LIDOORZHGE\ORFDOFRGHV
Figure 10 - Attaching Flexible Gas Hose
to Heater Gas Regulator
Fitting
Masonry
6FUHZ
Mounting
Bracket

www.fmiproducts.com
124465-01B 13
INSTALLATION
Continued
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CAUTION: Never connect
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SURSDQH/3VXSSO\3URSDQH/3
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ODWRU QRW VXSSOLHG ,QVWDOO WKH
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units, never connect heater to
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7KLV JDV LV FRPPRQO\ NQRZQ
DVZHOOKHDGJDV
Installation Items Needed
%HIRUHLQVWDOOLQJKHDWHUPDNHVXUH\RXKDYH
WKHLWHPVOLVWHGEHORZ
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 HTXLSPHQWVKXWRIIYDOYH
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$ HTXLSPHQW VKXWRII YDOYH ZLWK  137
tap is an acceptable alternative to test gauge
FRQQHFWLRQ3XUFKDVHWKHRSWLRQDOHTXLSPHQW
shutoff valve from your dealer.
)RUSURSDQH/3JDVWKHLQVWDOOHUPXVWVXSSO\
an external regulator. An external regulator
ZLOOUHGXFHLQFRPLQJJDVSUHVVXUH<RXPXVW
UHGXFHLQFRPLQJJDVSUHVVXUHWREHWZHHQ
DQGRIZDWHU,I\RXGRQRWUHGXFHLQFRPLQJ
JDVSUHVVXUHKHDWHUUHJXODWRUGDPDJHFRXOG
RFFXU,QVWDOOH[WHUQDOUHJXODWRUZLWKYHQWSRLQW-
LQJGRZQDVVKRZQLQ)LJXUH3RLQWLQJYHQW
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LURQRUVWHHOSLSH,QWHUQDOO\WLQQHG
FRSSHU WXELQJ PD\ EH XVHG LQ
FHUWDLQ DUHDV &KHFN \RXU ORFDO
FRGHV8VHSLSHRIGLDPHWHURU
JUHDWHUWRDOORZSURSHUJDVYROXPH
WRKHDWHU,ISLSHLVWRRVPDOOXQGXH
ORVVRIYROXPHZLOORFFXU
,QVWDOODWLRQPXVWLQFOXGHDQHTXLSPHQWVKXWRII
YDOYHXQLRQDQGSOXJJHG137WDS/RFDWH
137WDSZLWKLQUHDFKIRUWHVWJDXJHKRRNXS
NPT tap must be upstream from heater (see
Figure 13 page 14).
IMPORTANT:,QVWDOOHTXLSPHQWVKXWRIIYDOYH
in an accessible location. Main gas valve is
for turning on or shutting off gas to the ap-
pliance.
Check your building codes for any special
UHTXLUHPHQWVIRUORFDWLQJHTXLSPHQWVKXWRII
YDOYHWR¿UHSODFHV
Apply pipe joint sealant lightly to male NPT
WKUHDGV7KLVZLOOSUHYHQWH[FHVVVHDODQWIURP
going into pipe. Excess sealant in pipe could
result in clogged heater valves.
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VHDODQWWKDWLVUHVLVWDQWWROLTXLG
SHWUROHXP/3JDV
Figure 12 - External Regulator With Vent
Pointing Down
Propane/LP
Supply Tank
External
Regulator
ZLWK9HQW
Pointing
'RZQ

www.fmiproducts.com 124465-01B14
INSTALLATION
Continued
Figure 13 - Gas Connection
 3XUFKDVH WKH RSWLRQDO HTXLSPHQW VKXWRII
valve from your dealer.
** Min. inlet pressure for purpose of input
adjustment.
Tee Cap Pipe
Joint Nipple
0LQ
Sediment Trap
Gas
Regulator
(TXLSPHQW6KXWRII9DOYH
:LWK1377DS
Approved
Flexible
Gas Hose (if
DOORZHGE\
local codes)
Natural
From Gas Meter
:&WR
:&
Pressure)
3URSDQH/3
From External
Regulator
:&
WR:&
Pressure
CHECKING GAS CONNECTIONS
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and connections, internal and
external to unit, for leaks after
LQVWDOOLQJRUVHUYLFLQJ&RUUHFW
DOOOHDNVDWRQFH
WARNING: Never use an
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$SSO\ D FRPPHUFLDO OHDN GH-
WHFWLRQ VROXWLRQ WR DOO MRLQWV
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WRU KDV EHHQ LQVWDOOHG EHWZHHQ
SURSDQH/3 VXSSO\ DQG KHDWHU
6HHJXLGHOLQHVXQGHUConnecting
to Gas SupplySDJH
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PDLQJDVYDOYHFRQWUROYDOYHDQGHTXLS-
ment shutoff valve from gas supply piping.
3UHVVXUHVLQH[FHVVRISVLJZLOOGDP-
age heater regulator.
 &DSRIIRSHQHQGRIJDVSLSHZKHUHHTXLS-
PHQWVKXWRIIYDOYHZDVFRQQHFWHG
 3UHVVXUL]HVXSSO\SLSLQJV\VWHPE\HLWKHU
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.
Apply a commercial leak detection solution
WRDOOMRLQWV%XEEOHVIRUPLQJVKRZDOHDN
5. Correct all leaks at once.
 5HFRQQHFWKHDWHUDQGHTXLSPHQWVKXWRII
valve to gas supply. Check reconnected
¿WWLQJVIRUOHDNV
7HVW3UHVVXUHV(TXDO7RRU/HVV7KDQ
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&ORVHHTXLSPHQWVKXWRIIYDOYHVHH)LJ-
ure 14).
 3UHVVXUL]HVXSSO\SLSLQJV\VWHPE\HLWKHU
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.
Figure 14 - Equipment Shutoff Valve
Open
Closed
(TXLSPHQW
Shutoff Valve
We recommend that you install sediment
WUDS LQ VXSSO\ OLQH DV VKRZQ LQ )LJXUH 
/RFDWHVHGLPHQWWUDSZKHUHLWLVZLWKLQUHDFK
IRUFOHDQLQJ,QVWDOOLQSLSLQJV\VWHPEHWZHHQ
fuel supply and heater. Locate sediment trap
ZKHUH WUDSSHG PDWWHU LV QRW OLNHO\ WR IUHH]H
A sediment trap traps moisture and contami-
nants. This keeps them from going into heater
controls. If sediment trap is not installed or is
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ZUHQFKZKHQFRQQHFWLQJLWWRJDV
SLSLQJDQGRU¿WWLQJV

www.fmiproducts.com
124465-01B 15
INSTALLATION
Continued
(TXLSPHQW6KXWRII9DOYH
Propane/LP
Supply Tank
Control Valve
Location
Figure 16 - Checking Gas Joints
(Natural Gas Only)
Gas
Meter
(TXLSPHQW6KXWRII9DOYH
Control Valve Location
Figure 15 - Checking Gas Joints
(Propane/LP Gas Only)
3. Check all joints from gas meter (natural
JDVRUSURSDQH/3VXSSO\WRHTXLSPHQW
shutoff valve (see Figure 15 or 16). Apply
a commercial leak detection solution to all
MRLQWV%XEEOHVIRUPLQJVKRZDOHDN
4. Correct all leaks at once.
INSTALLING LOGS
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WKHSDUWVLQDFFRUGDQFHZLWKWKHVH
GLDJUDPV RU IDLOXUH WR XVH RQO\
SDUWVVSHFL¿FDOO\DSSURYHGZLWK
WKLVKHDWHUPD\UHVXOWLQSURSHUW\
GDPDJHRUSHUVRQDOLQMXU\
CAUTION: After installa-
WLRQDQGSHULRGLFDOO\WKHUHDIWHU
FKHFN WR HQVXUH WKDW QR ÀDPH
FRPHVLQFRQWDFWZLWKDQ\ORJ
:LWKWKHKHDWHUVHWWR+LJKFKHFN
WRVHHLIÀDPHVFRQWDFWDQ\ORJ
,IVRUHSRVLWLRQORJDFFRUGLQJWR
WKHORJLQVWDOODWLRQLQVWUXFWLRQV
LQWKLVPDQXDO)ODPHVFRQWDFW-
LQJORJZLOOFUHDWHVRRW
It is very important to install these logs exactly
as instructed. Do not modify logs. Only use
ORJVVXSSOLHGZLWKKHDWHU
 3ODFHJUDWHLQWRVTXDUHKROHVRQKHDWHU
EDVHDVVKRZQLQ)LJXUH
2. Place front log on burner so that it sits
EHWZHHQ JUDWH ¿QJHUV DQG EXUQHU VHH
Figure 17).
Figure 17 - Installing Grate and Logs
35(6685(7(67,1*+($7(5*$6
CONNECTIONS
 2SHQHTXLSPHQWVKXWRIIYDOYHVHH)LJXUH
SDJH
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 gas meter (natural
JDVRUSURSDQH/3VXSSO\WRHTXLSPHQW
shutoff valve (see Figure 15 or 16). Apply
a commercial leak detection solution to all
MRLQWV%XEEOHVIRUPLQJVKRZDOHDN
5. Correct all leaks at once.
6. Light heater (see Operation page 16).
Check all other internal joints for leaks.
7. Turn off heater (see To Turn Off Gas to
ApplianceSDJH
Grate
Heater Base
Front Log
The Front Log Should Be
Centered Left To Right.

www.fmiproducts.com 124465-01B16
INSTALLATION
Continued
3. Place rear log on heater base behind the
metal burner. The bottom of the rear log
has recess areas on the left and right side
for the base to set into. Pull the rear log
IRUZDUGXQWLOLWWRXFKHVWKHIURQWORJVHH
)LJXUHSDJH
  3ODFH WKH OHIW FURVVRYHU ORJ DV VKRZQ
in Figure 18. The bottom of the log is
PDUNHG ZLWK D ³/´ IRU OHIW 0DWFK URXQG
SHJ RQ OHIW VLGH RI WRS RI UHDU ORJ ZLWK
round hole in bottom of left crossover.
0DWFKVTXDUH SHJ RQOHIW VLGH RIWRS RI
IURQWORJZLWKVTXDUHKROHLQERWWRPRIOHIW
crossover log.
3ODFHWKHFHQWHUFURVVRYHUORJDVVKRZQLQ
Figure 19. The bottom of the log is marked
ZLWKD³&´IRUFHQWHU0DWFKVTXDUHSHJ
RQFHQWHURIUHDUORJZLWKVTXDUHKROHLQ
bottom of center crossover. Match round
SHJRQFHQWHURIIURQWORJZLWKURXQGKROH
in bottom of center crossover log.
3ODFHWKHULJKWFURVVRYHUORJDVVKRZQLQ
Figure 20. The bottom of the log is marked
ZLWKD³5´IRUULJKW0DWFKVTXDUHSHJRQ
ULJKWVLGHRIUHDUORJZLWKVTXDUHKROHLQ
bottom of right crossover. Match round
SHJRQULJKWVLGHRIIURQWORJZLWKURXQG
hole in bottom of right crossover log.
7. Add lava rock around base of heater if
desired. Do not place any lava rock on
logs or burner.
Left Crossover
Log
Figure 18 - Installing Left Crossover Log
Figure 19 - Installing Center Crossover
Log (H18 Series Shown)
Center
Crossover
Log
Figure 20 - Installing Left Crossover Log
Right
Crossover
Log

www.fmiproducts.com
124465-01B 17
OPERATION
LIGHTING
INSTRUCTIONS
WARNING:
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QHYHURSHUDWHWKLVKHDWHUZLWK
JODVVGRRUVFORVHG,I\RXRS-
erate heater with doors closed,
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ZLOOFDXVHJODVVWREXUVW0DNH
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VFUHHQ LV FORVHG EHIRUH UXQ-
QLQJKHDWHU
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IHZKRXUV
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
WKHIXOOÀDPHVRIWKH+,KHDWVHWWLQJEXWZLOO
¿QGWKHKHDWRXWSXWH[FHVVLYH<RXFDQRSHQ
the chimney damper (if you have one) fully or
partially to release some of the heat.
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ZLOO EH KRW LI KHDWHU KDV EHHQ
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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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ZKLFKKDVEHHQXQGHUZDWHU

www.fmiproducts.com 124465-01B18
PILOT
OFF
LO
HI
1. STOP! Read the safety information in
column 1.
 0DNHVXUHHTXLSPHQWVKXWRIIYDOYHLVIXOO\
open.
 3UHVVLQDQGWXUQFRQWURONQREFORFNZLVH
to the OFF position.
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7KHQ VPHOO IRU JDV LQFOXGLQJ QHDU WKH
ÀRRU,I\RXVPHOOJDV6723)ROORZ³%´
LQWKHVDIHW\LQIRUPDWLRQSDJH,I\RX
GRQ¶WVPHOOJDVJRWRWKHQH[WVWHS
5. Press in control knob and turn counterclock-
ZLVH to the PILOT position. The
LJQLWRUZLOO VSDUN RQFH.HHSFRQWURONQRE
pressed in for 5 seconds. If control knob does
QRWSRSXSZKHQUHOHDVHGFRQWDFWDTXDOL¿HG
service person or gas supplier for repairs.
1RWH<RXPD\EHUXQQLQJWKLVKHDWHUIRU
WKH¿UVWWLPHDIWHUKRRNLQJXSWRJDVVXS-
ply. 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.
 7XUQ FRQWURO NQRE FORFNZLVH to
OFF position. Press in control knob and
WXUQ FRXQWHUFORFNZLVH to PILOT
SRVLWLRQ 7KLV ZLOO OLJKW SLORW 3LORW LV DW-
WDFKHGWRUHDURIEXUQHU,IQHHGHGUHSHDW
this process until pilot lights.
Note: If pilot does not stay lit, contact a
TXDOL¿HGVHUYLFH SHUVRQ RUJDV VXSSOLHU
for repairs. Until repairs are made, light
pilot with match. To light pilot with match,
see Manual Lighting Procedure.
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RQGVDIWHUOLJKWLQJSLORW$IWHUVHFRQGV
release control knob.
Note: If pilot goes out, repeat steps 3
through 7.
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UHOHDVHG FRQWDFW D TXDOLILHG VHUYLFH
person or gas supplier for repairs.
8. Slightly press and turn control knob coun-
WHUFORFNZLVH to desired heating
level. The burner should light. Set control
knob to HI or LO.
Figure 21 - Control Knob and Ignitor
Button Location
&RQWURO.QRE
Figure 22 - Pilot
9$5,$%/(&21752/
23(5$7,21
The variable control valve can be set to high
RU ORZ E\ VLPSO\ WXUQLQJ WKH FRQWURO NQRE
XQWLO WKDW VHWWLQJ LV DWWDLQHG (YHQ WKH ORZ-
HVWVHWWLQJSURYLGHVUHDOLVWLFGDQFLQJ\HOORZ
ÀDPHV 6HOHFWLQJ KLJKHU VHWWLQJV SURGXFHV
greater heat output. This results in increased
heating comfort.
CAUTION: Do not try to ad-
MXVWKHDWLQJOHYHOVE\XVLQJWKH
HTXLSPHQWVKXWRIIYDOYH
TO TURN OFF GAS
72$33/,$1&(
 3UHVVLQDQGWXUQFRQWURONQREFORFNZLVH
to the OFF position.
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SDJH
MANUAL LIGHTING
352&('85(
 )ROORZVWHSVWKURXJKXQGHULighting
InstructionsSDJH
2. Depress control knob and light pilot
ZLWKPDWFK
 .HHSFRQWURONQRESUHVVHGLQIRUVHF-
RQGVDIWHUOLJKWLQJSLORW$IWHUVHFRQGV
UHOHDVHFRQWURONQRE1RZIROORZVWHS
under Lighting InstructionsSDJH
OPERATION
Continued
Ignitor Electrode
Pilot Burner
Thermocouple
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KHDWHUEHWZHHQ3,/27DQG+,*+
SRVLWLRQV
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WXUQFRQWURONQREFORFNZLVH to the
PILOT position.

www.fmiproducts.com
124465-01B 19
INSPECTING BURNERS
Figure 23 - Correct Pilot Flame Pattern
Figure 24 - Incorrect Pilot Flame Pattern
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LQ WKH ¿WWLQJ DW WKH HQWUDQFH WR WKH EXUQHU
7KHVHKROHVPD\EHFRPHEORFNHGZLWKGXVW
or lint. Periodically inspect these holes for any
blockage and clean as necessary. Blocked air
KROHVZLOOFUHDWHVRRW
0$,1%851(5
3HULRGLFDOO\LQVSHFWDOOEXUQHUÀDPHKROHVZLWK
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KHDWHUDQGOHWFRRO5HPRYHEORFNDJHEORFNHG
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&KHFNSLORW ÀDPHSDWWHUQ DQGEXUQHU ÀDPH
patterns often.
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)LJXUHVKRZVDFRUUHFWSLORWÀDPHSDWWHUQ
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WHUQ7KHLQFRUUHFWSLORWÀDPHLVQRWWRXFKLQJWKH
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WR FRRO :KHQ WKH WKHUPRFRXSOH FRROV WKH
KHDWHUZLOOVKXWGRZQ
,ISLORWÀDPHSDWWHUQLVLQFRUUHFWDVVKRZQ
in Figure 24
 WXUQKHDWHURIIVHHTo Turn Off Gas to Ap-
plianceSDJH
 VHHTroubleshootingSDJH
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KDYHDVOLJKWFXUYHEXWÀDPHVKRXOGEHEOXH
and have no yellow or orange color.
Pilot Burner
Thermocouple
Pilot Burner
Thermocouple
CLEANING AND MAINTENANCE
WARNING: Turn off heater
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PD\QHHGPRUHIUHTXHQWFOHDQ-
LQJ GXH WR H[FHVVLYH OLQW IURP
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WKH SULPDU\ DLU RSHQLQJV RI
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VRRWLQJDQGSURSHUW\GDPDJH
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8VHDYDFXXPFOHDQHURUVPDOOVRIWEULVWOHG
brush to clean.
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YLGHVDFOHDQEXUQLQJÀDPH.HHSWKHVHKROHV
FOHDURIGXVWGLUWDQGOLQW&OHDQWKHVHDLULQOHW
holes prior to each heating season. Blocked
DLUKROHVZLOOFUHDWHVRRW:HUHFRPPHQGWKDW
you clean the unit every three months during
operation and have heater inspected yearly
E\DTXDOL¿HGVHUYLFHSHUVRQ

www.fmiproducts.com 124465-01B20
We also recommend that you keep the burner
tube and pilot assembly clean and free of dust
DQGGLUW7RFOHDQWKHVHSDUWVZHUHFRPPHQG
using compressed air no greater than 30 PSI.
<RXUORFDOFRPSXWHUVWRUHKDUGZDUHVWRUHRU
home center may carry compressed air in a
FDQ,IXVLQJFRPSUHVVHGDLULQDFDQSOHDVH
IROORZWKHGLUHFWLRQVRQWKHFDQ,I\RXGRQ¶W
IROORZGLUHFWLRQVRQWKHFDQ\RXFRXOGGDP-
age the pilot assembly.
 6KXWRIIXQLWLQFOXGLQJSLORW$OORZXQLWWR
cool for at least thirty minutes.
 ,QVSHFWEXUQHUSLORWDQGSULPDU\DLULQOHW
holes on injector holder for dust and dirt
(see Figure 25).
 %ORZDLUWKURXJKWKHSRUWVVORWVDQGKROHV
in the burner.
4. Check injector holder located at the end of
the burner tube again. Remove any large
SDUWLFOHVRIGXVWGLUWOLQWRUSHWKDLUZLWK
DVRIWFORWKRUYDFXXPFOHDQHUQR]]OH
Figure 25 - Injector Holder On Outlet
Burner Tube
Burner Tube
Primary Air
Inlet Holes
Injector Holder (May
Be Brass or Aluminum
Depending on Model)
Figure 26 - Pilot Inlet Air Hole
CLEANING AND MAINTENANCE
Continued
Pilot
Assembly
Pilot Air
Inlet Hole
 %ORZDLULQWRWKHSULPDU\DLUKROHVRQWKH
injector holder.
 ,QFDVHDQ\ODUJHFOXPSVRIGXVWKDYHQRZ
been pushed into the burner repeat steps
3 and 4.
&OHDQSLORWDVVHPEO\DOVR$\HOORZWLSRQWKH
SLORWÀDPHLQGLFDWHVGXVWDQGGLUWLQWKHSLORW
assembly. There is a small pilot air inlet hole
DERXWIURPZKHUHWKHSLORWÀDPHFRPHVRXW
of the pilot assembly (see Figure 26). With the
XQLWRIIOLJKWO\ EORZDLU WKURXJKWKH DLULQOHW
KROH<RXPD\EORZWKURXJKDGULQNLQJVWUDZ
if compressed air is not available.