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For more information, visit www.desatech.com

WARNING: If the information in this manual is not fol-
lowed  exactly,  a  fire  or  explosion  may  result  causing 
property damage, personal injury or loss of life.

—  Do not store or use gasoline or other flammable va-

pors 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 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 OPERATION AND INSTALLATION MANUAL

MODELS

SBJ18VNA, SBJ18VPA

SBJ24VNA AND 

SBJ24VPA

Vent-free Models Also Design-Certified As Vented Decorative Appliances

MODELS

SMA18VNA, SMA18VPA

SMA24VNA AND 

SMA24VPA

Summary of Contents for SBJ18VNA

Page 1: ... 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 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 F...

Page 2: ...r WARNING This appli ance is for installation only in a solid fuel burn ing masonry or UL127 factory built fireplace or in a listed ventless firebox enclosure It is design certified for these installations in accor dance withANSI Z21 11 2 Exception Do not install this appliance in a fac tory builtfireplacethatin cludes instructions stat ing it has not been tested or should not be used with unvente...

Page 3: ...al for reference It is your guide to safe and proper operation of this log set WARNING Any change to this log set or its controls can be dangerous WARNING Donotuseablow erinsert heatexchangerinsertor otheraccessorynotapprovedfor use with this appliance SAFETY INFORMATION Continued WARNING This appliance is equipped with natural or pro pane LP gas Field conversion is not permitted WARNING Donotallo...

Page 4: ...eaning and Maintenance page 21 SAFETY INFORMATION Continued 8 Before using furniture polish wax carpet cleaner or similar products turn heater off If heated the vapors from these products may create a white powder residue within the burner box or on adjacent walls and furniture 9 This heater needs fresh outside air ventilation to run properly this heater has an Oxygen De pletion Sensing ODS safety...

Page 5: ...ntrols that can be purchased separately Wall switch Hand held ON OFF remote Wall thermostat Hand held thermostat remote See Accessories page 27 Thewallthermostatorhand heldthermostatmaynot be used where vented decorative listings is required Product Features OPERATION 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 b...

Page 6: ...vide additional fresh air Unusually tight construction is defined as construction where a Walls and ceilings exposed to the out side atmosphere have a continuous water vapor retarder with a rating of one perm 6 x 10 11 kg per pa sec m2 or less with openings 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 a...

Page 7: ...ontinued The space in the previous example is a confined space because the actual Btu Hr used is more than the maximum Btu Hr the space can support 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 adjoining room or add ventilation grills between rooms See Ventila...

Page 8: ...tion Grills Into Adjoining Room Option 2 Ventilation Grills Into Adjoining Room Option 1 12 12 Installation NOTICE This heater is intended for use as supplemental heat Use this heater along with your primary heating system Do not installthisheaterasyourprimary heating source If you have a central heating system you may run system s circulating blower while using heater This will help circulatetheh...

Page 9: ...pane LP for your unit If your gas supply is not correct do not install in fireplace Call dealer where you bought the appliance for proper type of appliance Installation Continued WARNING This appliance is equipped for natural or pro pane LP gas Field conversion is not permitted INSTALLATION AND CLEARANCES for vent free operation WARNING Maintain the minimum clearances If you can provide greater cl...

Page 10: ...Figure 5 Heat Resistant Material Slate Marble Tile etc Above Fireplace Noncombustible Requirements for Material Distance A Safe Installation 12 or more Noncombustible material OK Between 8 and 12 24 Models Install fireplace hood accessory GA6050 GA6052 GA6053 see Accessories page 27 18 Model Noncom bust ble material OK Less than 8 Noncombustible material must be extended to at least 8 See Between ...

Page 11: ...adjacentwallsandmantelsbe comehotduringoperation Walls and mantels above the firebox may become hot to the touch If installed properly these tem peratures meet the requirement ofthenationalproductstandard Follow all minimum clearances shown in this manual Notice Ifyourinstallationdoes not meet the minimum clear ances shown you must do one of the following operate the logs only with the flue damper...

Page 12: ...his will insure vented operation see Figure 10 The damper clamp will keep damper open Installation instructions are included with clamp accessory Figure 10 Attaching Damper Clamp Damper Damper Clamp Damper Manufactured Fireplace Masonry Fireplace Damper Clamp Valve Bracket See chart below for minimum permanent flue opening you must provide Attach damper clamp so the minimum permanent flue opening ...

Page 13: ... 3 Connect to gas supply See Connecting To Gas Supply Installation Continued Figure 12 Attaching Flexible Gas Hose to Heater Control Valve Gas Control Valve Flex ble Gas Hose if allowed by local codes CONNECTING TO GAS SUPPLY WARNING This appliance requires a 3 8 NPT National Pipe Thread inlet connection to the control valve WARNING Aqualifiedservice personmustconnectheatertogas supply Follow all ...

Page 14: ... from going into heater controls If sediment trap is not installed or is installed wrong heater may not run properly CAUTION Avoid damage to gas control Hold gas control with wrench when connecting it to gas piping and or fittings CHECKING GAS CONNECTIONS WARNING Testallgaspiping and connections for leaks after installing or servicing Correct all leaks at once Installation Continued Purchase the o...

Page 15: ...an 1 2 PSIG 3 5 kPa 1 Close equipment shutoff valve see Figure 15 2 Pressurize supply piping system by either 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 LPsup ply to equipment shutoff valve for propane LP...

Page 16: ... of the control system and any gas control which has been under water LIGHTING INSTRUCTIONS 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 Also iffireplaceopeninghasventsat the bottom you must open the vents before operating heater You must operate this heater wi...

Page 17: ...elease control knob If control knob does not pop out when released contact a qualified service person or gas supplier for repairs Note If pilot goes out repeat steps 4 through 8 starting on page 16 9 Slightly push in and turn control knob coun terclockwise to the ON position 10 Wait one minute and move switch to the ON position to light burner Note AUTO is only functional when using optional remot...

Page 18: ...g pilot After 30 seconds release control knob Now follow steps 9 through 11 under Lighting Instructions page 17 Optional Hand Held REMOTE OPERATION Note All remote control accessories must be purchased separately see Accessories page 27 Follow instructions included with the remote control NOTICE Youmust lightthe pilot before using the hand held re mote control unit See Lighting Instructions on pag...

Page 19: ...he fireplace the receiver ON OFF REMOTE switch should be in the OFF position Auto Shutoff Feature 1 If the average room temperature exceeds 82 degrees Fahrenheit 28 degrees Centi grade the hand held remote control will perform a safety override and shut the fireplace off This feature is not available in the MANU mode 2 The receiver continuously receives signals from the hand held remote to control...

Page 20: ...o Appli ance page 17 see Troubleshooting page 22 Note The pilot flame on natural gas units will have a slight curve but flame should be blue and have no yellow or orange color Figure 23 Correct Pilot Flame Pattern Your pilot may vary from pilots shown Pilot Burner Thermocouple Figure 24 Incorrect Pilot Flame Pattern Your pilot may vary from pilots shown Pilot Burner If burner flame pattern is inco...

Page 21: ...m cleaner in the blow position If using com pressed air in a can please follow the directions on the can If you don t follow directions on the can you could damage the pilot assembly 1 Shut off the unit including the pilot Allow the unit to cool for at least thirty minutes 2 Inspect burner pilot and primary air inlet opening on injector holder for dust and dirt see Figure 28 3 Blow air through the...

Page 22: ...epleted gas supply pro pane LP only 6 ODS pilot is clogged 7 External 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 piezo ignitor 5 Replace pilot assembly for remote ready units Replace ignitor electrode for variable manually controlled units 1 Turn on gas supply ...

Page 23: ...trol knob pressed in 30 seconds 3 Wait one minute for safety in terlock system to reset Repeat ignition operation 4 Fully open equipment shutoff valve 5 A Contact local natural or propane LP gas company B Clean ODS pilot see Cleaning and Maintenance page 21 or replace ODS pilot assembly 6 Hand tighten until snug then tighten 1 4 turn more 7 Replace pilot assembly 8 Replace control valve 1 Contact ...

Page 24: ...rol knob to LO position and let warm up for a minute 2 Operate burner until air is removed from line Have gas line checked by local natural or propane LP gas company 3 Observe minimum instal lation clearances see pages 9 through 12 4 Clean burner see Cleaning and Maintenance page 21 or replace burner orifice s 1 Turn heater off when using furniture polish wax carpet cleaners or similar products 1 ...

Page 25: ...clogged 1 Gasleak See warning state ment at top of page 2 Control valve or gas control defective 1 Foreign matter between con trol valve and burner 2 Gasleak See warning state ment at top of page 1 Hand held remote control is too close to heater REMEDY 1 Open window to ventilate room Stop using odor caus ing products while heater is running 2 Refill supply tank propane LP only 3 Locateandcorrectal...

Page 26: ...allation operation or troubleshooting If so contact DESA Technical Service Department at 1 866 672 6040 When calling please have your model and serial numbers of your heater ready You can also visit DESA technical services web site at www desatech com SMA18VNA SBJ18NVA Rating Variable 24 000 36 000 Btu Hr Type Gas Natural Gas Only Ignition Piezo Manifold Pressure 3 5 1 6 W C Inlet Gas Pressure in ...

Page 27: ...ll models Allows the gas log heater to be turned on and off with a wall switch VENT FREE LOGMATE FIREBOXES Not Shown Available in 32 36 and 42 models Circulating fireboxes feature louvers and an optional blower Non circulating smooth face models are ideal for custom trim applications such as stone or marble FB32C CIRCULATING FB32NC NON CIRCULATING SERIES Not Shown For all models FB36CA FB42C SERIE...

Page 28: ...www desatech com 114744 01D 28 Illustrated Parts Breakdown Models SMA18VNA SMA18VPA SBJ18VNA Shown and SBJ18PNA 7 18 3 2 9 4 2 1 6 8 5 21 22 10 11 6 19 12 13 16 10 14 15 20 17 ...

Page 29: ...807 01 Valve 1 111807 02 Valve 1 12 111796 01 Valve Bracket 1 13 097159 04 Piezo Ignitor 1 14 103784 01 ON PILOT OFF Knob Extension 1 15 103784 02 HI Lo Knob Extension 1 16 099998 01 Switch 1 17 111817 02 Flex Tube 3 16 1 18 111796 02 Pilot Shield 1 19 112376 01 Pilot 1 103778 01 Pilot 1 20 111828 01 Compression Nut Sleeve 1 21 111803 03 Air Shutter 1 22 111824 01 Compression Nut Sleeve 1 PARTS AV...

Page 30: ...www desatech com 114744 01D 30 Illustrated Parts Breakdown Models sMA24vNA Shown SMA24vPA sbj24vNA and sbj24vPA 1 4 22 21 5 3 6 9 11 2 12 7 13 16 18 8 10 19 14 15 20 17 ...

Page 31: ... 03 Orifice 1 11 111807 01 Valve 1 111807 02 Valve 1 12 111716 01 Valve Bracket 1 13 097159 04 Piezo Ignitor 1 14 103784 01 ON PILOT OFF Knob Extension 1 15 103784 02 HI Lo Knob Extension 1 16 099998 01 Switch 1 17 111817 02 Flex Tube 3 16 1 18 111796 02 Pilot Shield 1 19 112376 01 Pilot 1 103778 01 Pilot 1 20 111828 01 Compression Nut Sleeve 1 21 111803 03 Air Shutter 1 22 111824 01 Compression N...

Page 32: ... by a qualified installer in accordance with all local codes and instructions furnished with the unit This warranty does not apply to parts that are not in original condition because of normal wear and tear or parts that fail or become damaged as a result of misuse accidents lack of proper maintenance or defects caused by improper installation Travel diagnostic cost labor transportation and any an...

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