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UNVENTED (VENT-FREE) BLUE FLAME GAS HEATER
SAFETY INFORMATION AND INSTALLATION MANUAL
CBN20, CBP20, SBN20, SBP20, CBN20T, CBP20T,
CBN30T, CBP30T, CBT20NT, CBT20PT, CBT30NT, CBT30PT,
CBN20TK, CBP20TK
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 vapors
and liquids in the vicinity of this or any other appliance.
— WHAT TO DO IF YOU SMEL
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WARNING: Improper installation, adjustment, altera- tion, service, or maintenance can cause injury or prop- erty damage. Refer to this manual for correct installation and operational procedures. For assistance or addi- tional information consult a qualified installer, service agency, or the gas supplier. WARNING: This is an unvented gas-fired heater. It uses air (oxygen) from the room in which it is installed. Provi- sions for adequate combustion and ventilation air must be provided. Refer to
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SAFETY INFORMATION Due to high temperatures, the appliance should be located out IMPORTANT: Read this owner’s of traffic and away from furniture manual carefully and completely and draperies. before trying to assemble, op- erate, or service this heater. Do not place clothing or other Improper use of this heater can flammable material on or near cause serious injury or death the appliance. Never place any from burns, fire, explosion, objects on the heater. electrical shock, and carbon
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SAFETY INFORMATION UNPACKING Continued 1. Remove heater from carton. 2. Remove all protective packaging applied to 4. This heater shall not be installed in a bedroom heater for shipment. or bathroom. 3. Check heater for any shipping damage. If 5. This heater needs fresh, outside air ventilation heater is damaged, promptly return to dealer to run properly. This heater has an Oxygen where you bought heater. Depletion Sensing (ODS) safety shutoff system. The ODS shuts down the heater if PRO
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Unusually tight construction is defined as AIR FOR COMBUSTION construction where: AND VENTILATION a. walls and ceilings exposed to the out- side atmosphere have a continuous WARNING: This heater shall water vapor retarder with a rating of not be installed in a confined -11 2 one perm (6x10 kg per pa-sec-m ) or space or unusually tight con- less with openings gasketed or sealed struction unless provisions are and b. weather stripping has been added on provided for adequate combus- openabl
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4. Compare the maximum Btu/Hr the space can AIR FOR COMBUSTION support with the actual amount of Btu/Hr used. AND VENTILATION _______________Btu/Hr (maximum the space Continued can support) _______________Btu/Hr (actual amount of DETERMINING FRESH-AIR FLOW Btu/Hr used) FOR HEATER LOCATION Example: Determining if You Have a Confined or 51,200 Btu/Hr (maximum the space can support) Unconfined Space 60,000 Btu/Hr (actual amount of Btu/Hr used) Use this work sheet to determine if yo
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AIR FOR COMBUSTION Ventilated Outlet Attic AND VENTILATION Air Continued Outlet Air To Attic VENTILATION AIR Ventilation Air From Inside Building To This fresh air would come from an adjoining un- Crawl Space confined space. When ventilating to an adjoining Inlet Air unconfined space, you must provide two perma- Ventilated nent openings: one within 12” of the ceiling and Inlet Air Crawl Space one within 12” of the floor on the wall connecting the two spaces (see options 1 and 2, Figure 2). Y
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INSTALLATION Continued WARNING: Never install the heater INSTALLATION ITEMS • in a bedroom or bathroom Before installing heater, make sure you have the • in a recreational vehicle items listed below. • where curtains, furniture, • for propane/LP gas, external regulator (supplied clothing, or other flammable by installer) objects are less than 36 inches • piping (check local codes) from the front, top, or sides of • sealant (resistant to propane/LP gas) • equipment shutoff valve * the heat
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INSTALLATION Continued THERMOSTAT SENSING BULB The thermostat sensing bulb is below the heater. 1. Place clamp on thermostat sensing bulb as shown in Figure 5. Clamp is provided in hardware package. 2. Snap clamp into upper mounting hole as shown in Figure 5. Mounting hole is located on lower left edge on back of heater. Make sure the thermostat sensing bulb is pointing up. Figure 7 - Removing Front Panel Of Thermostat Heater Sensing Bulb Methods For Attaching Mounting Bracket To Wall C
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Attaching To Wall Anchor Method INSTALLATION For attaching mounting bracket to hollow walls Continued (wall areas between studs) or solid walls (concrete 2. Mark screw locations on wall (see Figure 8). or masonry) Note: Only mark last hole on each end of 1. Drill holes at marked locations using 5/16" mounting bracket. Insert mounting screws drill bit. For solid walls (concrete or masonry), through these holes only. drill at least 1" deep. 3. Remove tape and mounting bracket from 2. Fold
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MOUNTING HEATER TO FLOOR INSTALLATION (OPTIONAL) Continued Mounting Base Feet to Heater Installing Bottom Mounting Screws 1. Lay heater cabinet on its back on a table 1. Locate two bottom mounting holes. These with the heater bottom overhanging the table holes are near bottom on back panel of heater edge. (see Figure 12). 2. Align holes in base foot with mounting holes 2. Mark screw locations on wall. on bottom of cabinet (see Figure 13). 3. Remove heater from mounting bracket. 3. Secure
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INSTALLATION Propane/LP Continued Supply Tank External CONNECTING TO GAS SUPPLY Regulator WARNING: This appliance requires a 3/8" NPT (National Pipe Thread) inlet connection to Vent the pressure regulator. Pointing Down WARNING: A qualified ser- vice person must connect heater Figure 14 - External Regulator With to gas supply. Follow all local Vent Pointing Down codes. Typical Inlet Pipe Diameters 20,000 Btu/Hr Models - 3/8" or greater WARNING: For natural 30,000 Btu/Hr Models - 1/2
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INSTALLATION Continued CAUTION: For propane/LP gas, make sure external regula- Note: Burner bracket tor has been installed between not shown for clarity Heater propane/LP supply and heater. Pressure Cabinet See guidelines under Connect- Regulator ing to Gas Supply, page 12. 3/8" NPT Pipe Nipple PRESSURE TESTING GAS SUPPLY PIPING SYSTEM Tee Joint Test Pressures In Excess Of 1/2 PSIG Ground Joint Reducer (3.5 kPa) Union Bushing to 1. Disconnect appliance with its appliance main 1/8" NP
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INSTALLATION OPERATING HEATER Continued FOR YOUR SAFETY READ BEFORE LIGHTING PRESSURE TESTING HEATER GAS CONNECTIONS 1. Open equipment shutoff valve (see Figure 16, WARNING: If you do not fol- page 13). low these instructions exactly, 2. For natural gas open main gas valve located a fire or explosion may result on or near gas meter. For propane/LP gas open causing property damage, per- propane/LP supply tank valve. sonal injury or loss of life. 3. Make sure control knob of heater is in t
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Thermocouple OPERATING HEATER Continued Ignitor Electrode 5. Turn control knob counterclockwise Pilot Burner to the PILOT position. Press in control knob for five (5) seconds (see Figure 19). Note: You may be running this heater for the first time after hooking up to gas sup- 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. • If control knob does not pop up when released, contact a qualified service person Fig
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BURNER FLAME PATTERN OPERATING HEATER Continued WARNING: If yellow tipping MANUAL LIGHTING occurs, your heater could pro- PROCEDURE duce increased levels of carbon 1. Remove front panel (see Figure 7, page 9). monoxide. 2. Follow steps 1 through 5 under Lighting Instructions, page 14. NOTICE: Do not mistake orange 3. With control knob pressed in, strike match. flames with yellow tipping. Dirt Hold match to pilot until pilot lights. or other fine particles enter the 4. Keep control knob p
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3. Blow air through the ports/slots and holes in CLEANING AND the burner. MAINTENANCE 4. Never insert objects into the pilot tube. Clean the pilot assembly also. A yellow tip on the WARNING: Turn off heater pilot flame indicates dust and dirt in the pilot as- and let cool before cleaning. sembly. There is a small pilot air inlet about two inches from where the pilot flame comes out of the pilot assembly (see Figure 25). With the unit CAUTION: You must keep off, lightly blow air through t
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SPECIFICATIONS CBN20/CBN20T CBN30T CBT20NT CBT30NT SBN20 Btu (Variable) 10,000/20,000 15,000/30,000 10,000/20,000 15,000/30,000 Type Gas --------------------------------Natural Only--------------------------------- Ignition Piezo Piezo Electronic Electronic Pressure Regulator Setting 3" W.C. 3" W.C. 3" W.C. 3"W.C. Inlet Gas Pressure (in. of water) Maximum 10.5" 10.5" 10.5" 10.5" Minimum 4" 4" 4" 4" Dimensions, Inches (H x W x D) Heater (With knobs & grill) 26.25x18.25x7 26.25x25.75x7 26.
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TROUBLESHOOTING WARNING: Turn off and unplug heater and let cool before servicing. Only a qualified service person should service and repair heater. CAUTION: Never use a wire, needle, or similar object to clean ODS/pilot. This can damage ODS/pilot unit. Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLEM POSSIBLE CAUSE REMEDY When ignitor button is pressed, 1. Ignitor electrode positioned 1. Replace pilot assembly there is no spark at ODS/pilot wrong 2. Ignito
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TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY ODS/pilot lights but flame 1. Control knob not fully pressed in 1. Press in control knob fully goes out when control knob is 2. Control knob not pressed in 2. After ODS/pilot lights, keep con- released long enough trol knob pressed in 30 seconds 3. Safety interlock system has 3. Wait one minute for safety in- been triggered terlock system to reset. Repeat ignition operation 4. Equipment shutoff valve not 4. Fully open equipment sh
