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124972-01C

19

OPERATION

THERMOSTAT-CONTROLLED MODELS

 WARNING:

•  If  fireplace  has  glass  doors, 

never operate this heater with 

glass doors closed. If you op

-

erate heater with doors closed, 

heat buildup inside fireplace 

will cause glass to burst. Make 

sure there are no obstructions 

across openings of fireplace.

•  You must operate this heater 

with  a  fireplace  screen  in 

place.  Make  sure  fireplace 

screen is closed before run

-

ning heater.

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 

the full flames of the HI heat setting but will 

find the heat output excessive. You can open 

the chimney damper (if you have one) fully or 

partially to release some of the heat.

 WARNING: Damper handle 

will  be  hot  if  heater  has  been 

running. 

1.  STOP! Read the safety information.
2.  Make sure equipment shutoff valve is fully 

open.

3.  Turn control knob clockwise 

 to the 

OFF position.

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. 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 23, page 20).

 

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 or more. 

This will allow air to bleed from the gas 

system.

FOR YOUR SAFETY  

READ BEFORE LIGHTING

 WARNING: If you do not fol-

low these instructions exactly, 

a  fire  or  explosion  may  result 

causing property damage, per

-

sonal injury or loss of life.

A.  This appliance has a pilot which must 

be  lighted  by  hand.  When  lighting 

the  pilot,  follow  these  instructions 

exactly.

B.  BEFORE  LIGHTING  smell  all  around 

the appliance area for gas. Be sure to 

smell next to the floor because some 

gas is heavier than air and will settle 

on the floor.

 

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electric switch; do 

not use any phone in your building.

• Immediately  call  your  gas  supplier 

from a neighbor’s phone. Follow the 

gas supplier’s instructions.

• If you cannot reach your gas supplier, 

call the fire 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 quali

-

fied 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

NOTICE: During initial operation 

of new heater, burning logs will 

give off a paper-burning smell. 

Orange flame will also be pres

-

ent. Open damper or window to 

vent smell. This will only last a 

few hours. 

Summary of Contents for Comfort Flame CRB3624NRA

Page 1: ...ng Immediatelycallyourgassupplierfromaneighbor 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 quali fied installer service agency or the gas supplier INSTALLER Leave this manual with the appliance CONSUMER Retain this manual for future reference UNVENTED VENT FREE GAS LOG HEATER OWNER S O...

Page 2: ...s ap pliance is for installation only in a solid fuel burning masonry or UL127 factory built fireplace or in a listed ventless firebox enclo sure It is design certified for these installations in accordance with ANSI Z21 11 2 Exception Do not install this appliance in a factory built fireplace that includes instructions stating it has not been test ed or should not be used with unvented gas logs W...

Page 3: ...erence It is your guide to safe and proper operation of this fireplace WARNING Any change to this heater or its controls can be dangerous WARNING Do not use a blower insert heat exchanger insertorotheraccessorynotap proved for use with this heater SAFETY Continued WARNING Donotallowfans toblowdirectlyintothefireplace Avoidanydraftsthatalterburner flame patterns Ceiling fans can create drafts that ...

Page 4: ...s across openings of fireplace 8 To prevent the creation of soot follow the instructions in Cleaning and Maintenance page 27 9 Before using furniture polish wax carpet cleaner or similar products turn heater off If heated thevaporsfromtheseproductsmay create a white powder residue within burner box or on adjacent walls and furniture 10 This heater needs fresh outside air ven tilation to run proper...

Page 5: ...er 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 heater is damaged call FMI PRODUCTS LLC at 1 866 328 4537 Please do not return it to the store Install and use heater with care Follow all l...

Page 6: ...to keep the cold air out and the warm air in During heating months home owners want their homes as airtight as possible While it is good to make your home energy efficient your home needs to breathe Fresh air must enter your home All fuel burning ap pliances need fresh air for proper combustion and ventilation Exhaust fans fireplaces clothes dryers and fuel burning appliances draw air from the hou...

Page 7: ...penings add the volume of these rooms to the total volume of the space 2 Multiply the space volume by 20 to determine the maximum Btu Hr the space can support _________ volume of space x 20 Maxi mum Btu Hr the space can support Example 2560 cu ft volume of space x 20 51 200 maximum Btu Hr the space can support 3 Add the Btu Hr of all fuel burning appliances in the space Vent free fireplace _______...

Page 8: ...gure 2 You can also remove door into adjoining room see option 3 Figure 2 Follow the National Fuel Gas Code ANSI Z223 1 NFPA 54 Air for Combustion and Ventilation for required size of ventilation grills or ducts Figure 2 Ventilation Air from Inside Building Or Remove Door into Adjoining Room Option 3 Ventilation Grills Into Adjoining Room Option 2 Ventilation Grills Into Adjoining Room Option 1 12...

Page 9: ...ficial installing heater in rooms without enough ventilation air may cause mildew to form from too much moisture See Air for Combustion and Ventila tion page 6 NOTICE Thisheater isintended for use as supplemental heat Use this heater along with your primary heating system Do not install this heater as your pri mary heat source If you have a centralheatingsystem youmay run system s circulating blow...

Page 10: ...to a masonry UL127 listed manufactured fireplace or listed vent free firebox Minimum Clearances For Side Combustible Material Side Wall and Ceiling A Clearances from the side of the fireplace cabinet to any combustible material and wall should follow diagram in Figure 4 Figure 4 Minimum Clearance for Combustible to Wall Minimum 16 from Side Wall Example Example The face of a mantel bookshelf etc i...

Page 11: ...aterial s above the fireplace opening Noncombus tible materials such as slate marble tile etc must be at least 1 2 thick With sheet metal you must have noncombustible ma terial behind it Noncombustible material must extend at least 8 up for all models If noncombustible material is less than 12 you must install the fireplace hood acces sory Even if noncombustible material is more than 12 you may ne...

Page 12: ...you must maintain the minimum distance of 14 to combustibles see Figure 8 B If combustible materials are less than 14 to the fireplace you must install appliance at least 5 above the combustible flooring see Figure 9 Hearth 5 Min Combustible Material Figure 9 Minimum Fireplace Clearances Above Combustible Flooring Minimum Noncombustible Material 8 Min 12 15 18 All minimum distances are in inches L...

Page 13: ...will not work properly For thermostat models avoid damage to thermostat bulb Avoid nicks or sharp bends in thermostat bulb wire Keep thermostat bulb in mounting bracket until ready to mount base to floor See Optional Positioning Of Thermostat Sensing Bulb page 30 Installation Items Needed hardware package provided with heater approved flexible gas hose and fittings not provided if allowed by local...

Page 14: ...asonry screws provided in hardware package see Figure 13 7 Connect to gas supply See Connecting To Gas Supply Heater Gas Regulator Flexible Gas Hose if allowed by local codes Figure 11 Attaching Flexible Gas Hose to Heater Gas Regulator Thermostatically Controlled Models Only Figure 12 Attaching Flexible Gas Hose to Heater Gas Regulator Remote Ready Models Only Gas Control Flexible Gas Hose if all...

Page 15: ...ameter or greater to allow proper gas volume to heater If pipe is too small undue loss of volume will occur Installation must include an equipment 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 15 or Figure 16 on page 16 depending on your model Propane LP Supply Tank External Regulator with Vent Pointin...

Page 16: ...ld gas control with wrench when connecting it to gas piping and or fittings Remote Ready Models Only CHECKING GAS CONNECTIONS WARNING Testallgaspiping and connections internal and external to unit for leaks after installing or servicing Correct all leaks at once WARNING Never use an open flame to check for a leak Applyanoncorrosiveleakdetec tion fluid to all joints Bubbles forming show a leak Corr...

Page 17: ...pply Tank Equipment Shutoff Valve Open Closed Equipment Shutoff Valve Gas Meter Figure 19 Checking Gas Joints Natural Gas Only Thermostat Gas Valve or Control Valve Location Equipment Shutoff Valve INSTALLATION Continued PRESSURE TESTING HEATER GAS CONNECTIONS 1 Open equipment shutoff valve see Fig ure 17 2 Open main gas valve located on or near gas meter for natural gas or open pro pane LP supply...

Page 18: ...2 Rest rear log in back corner sections of base assembly as shown in Figure 20 Make sure log is completely vertical and not leaning in toward burner where flame will touch the log 3 Position front right log against right side of grate prongs see Figure 20 4 Position front left log against left side of grate prongs see Figure 20 5 Place middle right log over front right and bottom logs as shown in ...

Page 19: ...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 FOR YOUR SAFETY READ BEFORE LIGHTING WARNING If you do not fol low these instructions exactly a fire or explosion may result causing property damage per sonal injury or loss of life A This appliance has a pilot which must be lighted by hand When lighting the pilot follow these inst...

Page 20: ... level The burn ers should light Set control knob to any heat level between HI and LO 9 To leave pilot lit and shut off burners only turn control knob clockwise to the PILOT position CAUTION Do not try to ad just heating levels by using the equipment shutoff valve TO TURN OFF GAS TO APPLIANCE 1 Turn control knob clockwise to the OFF position 2 Close equipment shutoff valve see Figure 17 page 17 TH...

Page 21: ...onal injury or loss of life A This appliance has a pilot which must be lighted by hand When lighting the pi lot 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 swi...

Page 22: ...as supplier for repairs Note If pilot goes out repeat steps 4 through 8 9 Slightly push in and turn control knob coun terclockwise to the ON position 10 Wait one minute and switch selector switch to the ON position to light burners Note AUTO is only functional when using GWMT1 or GWMS2 optional accessories 11 Set flame adjustment knob to any level between HI and LO 12 You may shut off the burners ...

Page 23: ...le Figure 29 Incorrect Pilot Flame Pattern Your pilot may vary from pilots shown Thermocouple Thermocouple Pilot Burner FRONT BURNER FLAME PATTERN Figure 30 shows correct front burner flame pattern Figure 31 shows incorrect front burner flame pattern The incorrect burner flame pattern shows yellow tipping at top of blue flame WARNING If yellow tipping occurs your heater could pro duce increased le...

Page 24: ...or to each heating season Blocked air holes will create soot We recommend that you clean the unit every three months during operation and have heater inspected yearly by a qualified service person We also recommend that you keep the burner tube and pilot assembly clean and free of dust and dirt To clean these parts we recommend using compressed air no greater than 30 PSI Your local computer store ...

Page 25: ...h the air inlet hole You may blow through a drinking straw if compressed air is not available CLEANING AND MAINTENANCE Continued LOGS If you remove logs for cleaning refer to Installing Logs page 18 to properly replace logs Replace log s if broken or chipped dime sized or larger MAIN BURNER Periodically inspect all burner flame holes with the heater running All slotted burner flame holes should be...

Page 26: ...in PILOT position 4 Air in gas lines when in stalled 5 Depleted gas supply pro pane LP only 6 ODS pilot is clogged 7 Gas regulator setting is not correct REMEDY 1 Reconnect ignitor cable 2 Free ignitor cable if pinched by any metal or tubing Keep ignitor cable dry 3 Replace ignitor cable 4 Replace ignitor 5 Replace pilot assembly 6 Replace pilot assembly 7 Install new alkaline battery in electroni...

Page 27: ...hts keep control knob pressed in 30 seconds 3 Wait one minute for safety interlock system to reset Repeat ignition operation 4 Fully open equipment shut off valve 5 A Contact local natural or propane LP gas company B Clean ODS pilot see Cleaning and Maintenance page 24 or replace ODS pilot assembly 6 Hand tighten until snug then tighten 1 4 turn more 7 Replace pilot assembly 8 Replace control valv...

Page 28: ...s until air is removed from line Have gas line checked by local natural or propane LP gas company 3 Observe minimum installa tion clearances see pages 9 through 11 4 Clean burners see Clean ing and Maintenance page 24 or replace burner orifice s 1 Turn heater off when us ing furniture polish wax carpet cleaners or similar products 1 Refer to Air for Combustion and Ventilation require ments page 6 ...

Page 29: ...matter between control valve and burner 2 Gas leak See Warning statement at top of page 1 Thermostat sensing bulb needs to be repositioned Thermostat Controlled Models Only 2 Hand held remote control is too close to heater Re mote Ready Models Only REMEDY 1 Open window to venti late room Stop using odor causing products while heater is running 2 Refill supply tank propane LP only 3 Locate and corr...

Page 30: ...at sensing bulb elsewhere follow these directions Tools needed 5 16 hex driver or socket 1 Locate the gas valve assembly and ther mostat sensing bulb see Figure 34 2 With 5 16 hex driver or socket loosen the thermostat screw Carefully slide the thermostat sensing bulb out of the retain ing clamp see Figure 35 Note Do not remove screw Make sure you tighten screw after removing thermo stat sensing b...

Page 31: ...nical Service Department at 1 866 328 4537 When calling please have your model and serial numbers of your heater ready You can also visit our technical services web site at www fmiproducts com REPLACEMENT PARTS If this product is missing a part or has a broken component please do not return it to the store Call FMI PRODUCTS LLC at 1 866 328 4537 to answer questions and replace parts under warranty...

Page 32: ...www fmiproducts com 124972 01C 32 PARTS THERMOSTAT CONTROLLED MODELS CSG3924NTB AND CSG3924PTB LPG 11 10 4 1 8 3 12 8 2 5 6 7 24 25 21 2 22 15 13 16 9 8 8 19 17 20 18 14 23 26 ...

Page 33: ...ew 2 11 101004 04 Rear Burner Orifice Natural 1 101004 02 Rear Burner Orifice Propane LP 1 12 101004 22 Front Burner Orifice Natural 1 101004 06 Front Burner Orifice Propane LP 1 13 112708 02 Thermostat Burner Tube 1 14 099211 01 Screw 2 15 098544 01 Thermobulb Clip 1 16 099387 09 Pilot Tube 1 17 101053 01 Adapter 1 18 101329 31 Thermostat Gas Valve Natural 1 103781 02 Thermostat Gas Valve Propane...

Page 34: ...www fmiproducts com 124972 01C 34 PARTS REMOTE READY VARIABLE CONTROL MODELS CRB3624NRA AND CRB3624PRA LPG 5 6 21 14 22 14 23 24 2 2 19 20 16 1 18 17 10 11 4 3 8 8 12 14 13 7 15 9 8 25 ...

Page 35: ...Rear Burner Orifice Propane LP 1 12 101004 08 Front Burner Orifice Natural 1 101004 06 Front Burner Orifice Propane LP 1 13 112708 01 Remote Burner Tube 1 14 M12461 26 Screw 5 15 099918 02 Pilot Regulator Natural 1 16 099387 12 Pilot Tube Natural 1 099387 09 Pilot Tube Propane LP 1 17 14396 Male Fitting 1 18 103781 01 Gas Control Valve Natural 1 103781 02 Gas Control Valve Propane LP 1 19 103784 0...

Page 36: ...Left Log 1 3 125683 01 Middle Right Log 1 4 121699 09 Middle Left Log 1 5 121699 13 Bottom Log Remote 1 121699 07 Bottom Log T stat 1 6 121699 12 Rear Log 1 PARTS LOG MODELS CSG3924NTB CSG3924PTB CRB3624NRA CRB3624PRA This list contains replaceable parts used in your heater When ordering parts follow the instructions listed under Replacement Parts on page 31 of this manual ...

Page 37: ...ed on and off with a wall switch DECORATIVE ASH BED CONTROL COVER KIT CDABKA For all models Order when additional loose logs are desired GAS APPLIANCE INSTALLATION KIT CIKA For all models RECEIVER AND HAND HELD THERMOSTAT REMOTE CONTROL KIT CTRC For all Remote Ready Models Allows the fireplace to be operated in a manually or thermostatically controlled mode You can turn the fireplace on and off wi...

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Page 39: ..._______________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________...

Page 40: ...s product and or FMI PRODUCTS LLC who will provide original factory replacement parts Failure to use original factory replacement parts voids this warranty Travel handling transportation diagnostic material labor and incidental costs associated with warranty repairs unless expressly covered by this warranty are not reimbursable under this warranty and are the responsibility of the owner Excluded f...

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