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UNVENTED (VENT-FREE) BLUE FLAME GAS HEATER
SAFETY INFORMATION AND INSTALLATION MANUAL
MODELS CBN20T, CBP20T, CBN30T, CBP30T, CBT20NT, CBT20PT,
CBT30NT AND CBT30PT
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 SMELL GAS
• Do not try to light any app
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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 Ai
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SAFETY INFORMATION Due to high temperatures, the appliance should be located out WARNING: This product con- of traffic and away from furniture tains and/or generates chemicals and draperies. known to the State of California to cause cancer or birth defects Do not place clothing or other or other reproductive harm. flammable material on or near the appliance. Never place any IMPORTANT: Read this owner’s objects on the heater. manual carefully and completely before trying to assemble, S
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SAFETY INFORMATION PRODUCT Continued IDENTIFICATION 5. This heater needs fresh, outside air ventilation Control Knob & Ignitor Button Heater to run properly. This heater has an Oxygen (not seen from this view) Cabinet Depletion Sensing (ODS) safety shutoff system. The ODS shuts down the heater if not enough fresh air is available. See Air for Combustion and Ventilation, page 5. 6. Keep all air openings in front and bottom of heater clear and free of debris. This will insure enough air fo
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Unusually Tight Construction AIR FOR COMBUSTION The air that leaks around doors and windows AND VENTILATION may provide enough fresh air for combustion and ventilation. However, in buildings of unusually WARNING: This heater shall tight construction, you must provide additional not be installed in a confined fresh air. space or unusually tight con- Unusually tight construction is defined as struction unless provisions are construction where: a. walls and ceilings exposed to the out- provi
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The space in the above example is a confined space AIR FOR COMBUSTION because the actual Btu/Hr used is more than the maxi- AND VENTILATION mum Btu/Hr the space can support. You must provide Continued additional fresh air. Your options are as follows: A. Rework worksheet, adding the space of an adjoin- DETERMINING FRESH-AIR FLOW ing room. If the extra space provides an unconfined FOR HEATER LOCATION space, remove door to adjoining room or add ventilation grills between rooms. See Ventilation
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AIR FOR COMBUSTION INSTALLATION AND VENTILATION NOTICE: This heater is intended Continued for use as supplemental heat. Use this heater along with your primary heating system. Do not 12" install this heater as your pri- mary heat source. If you have a Ventilation Grills central heating system, you may Into Adjoining Room, Ventilation Option 2 run system’s circulating blower Grills Or into Adjoining Remove Room, Door into while using heater. This will help Option 1 Adjoining Room, c
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IMPORTANT: Vent-free heaters add moisture to INSTALLATION the air. Although this is beneficial, installing heater Continued in rooms without enough ventilation air may cause LOCATING HEATER mildew to form from too much moisture. See Air for Combustion and Ventilation, page 5. If high humid- WARNING: Maintain the ity is experienced, a dehumidifier may be used to help lower the water vapor content in the air. minimum clearances shown For convenience and efficiency, install heater in Figure 4.
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Marking Screw Locations INSTALLATION 1. Tape mounting bracket to wall where heater Continued will be located. Make sure mounting bracket INSTALLING HEATER TO WALL is level. Mounting Bracket Locate mounting bracket in heater carton. Remove WARNING: Maintain mini- mounting bracket from heater carton. mum clearances shown in Figure 8. If you can, provide greater clearances from floor and joining wall. Figure 6 - Mounting Bracket 2. Mark screw locations on wall (see Figure 8). Note: Only mark
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Horizontal Slots INSTALLATION Continued Mounting Bracket Attaching To Wall Stud Method (attached For attaching mounting bracket to wall studs to wall) 1. Drill holes at marked locations using 9/64" Stand-Out Tab drill bit. 2. Place mounting bracket onto wall. Line up last hole on each end of bracket with holes drilled in wall. Figure 11 - Mounting Heater Onto Mounting Bracket 3. Insert mounting screws through bracket and into wall studs. Installing Bottom Mounting Screws 4. Tighten screw
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CONNECTING TO GAS SUPPLY INSTALLATION Continued WARNING: This appliance MOUNTING HEATER TO FLOOR requires a 3/8" NPT (National (OPTIONAL) Pipe Thread) inlet connection to Mounting Base Feet to Heater the pressure regulator. 1. Lay heater cabinet on its back on a table with the heater bottom overhanging the table edge. WARNING: A qualified ser- 2. Align holes in base foot with mounting holes vice person must connect heater on bottom of cabinet (see Figure 13). 3. Secure base foot to heat
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Install sediment trap in supply line as shown in INSTALLATION Figure 15. Locate sediment trap where it is within Continued reach for cleaning. Locate sediment trap where trapped matter is not likely to freeze. A sediment CAUTION: Use only new, trap traps moisture and contaminants. This keeps them from going into heater controls. If sediment black iron or steel pipe. Inter- trap is not installed or is installed wrong, heater nally-tinned copper tubing may may not run properly. be used i
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m e propane/LP gas or opening ain gas valv INSTALLATION located on or near gas meter for natural gas Continued or using compressed air. CHECKING GAS CONNECTIONS 3. Check all joints from gas meter for natural gas or propane/LP supply tank for propane/LP gas, WARNING: Test all gas piping m . to equip ent shutoff valve (see Figure 17 or 18) Apply a noncorrosive leak detection fluid to and connections, internal and all joints. Bubbles forming show a leak. external to unit, for lea
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6. Turn control knob counterclockwise OPERATING HEATER to the PILOT position. Press in control FOR YOUR SAFETY READ knob for five (5) seconds. BEFORE LIGHTING 7. With control knob pressed in, push down and release ignitor button. This will light WARNING: If you do not fol- pilot. The pilot is attached to the front of burner. Note: You may be running this low these instructions exactly, heater for the first time after hooking up to a fire or explosion may result gas supply. If so, you ma
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INSPECTING HEATER OPERATING HEATER Continued Check pilot flame pattern and burner flame pat- tern often. TO TURN OFF GAS TO APPLIANCE PILOT FLAME PATTERN Shutting Off Heater Figure 21 shows a correct pilot flame pattern. Figure 1. Turn control knob clockwise to the 22 shows an incorrect pilot flame pattern. The incor- OFF position. rect pilot flame is not touching the thermocouple. 2. Turn off all electric power to the appliance This will cause the thermocouple to cool. When the if service is
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INSPECTING HEATER CLEANING AND Continued MAINTENANCE BURNER FLAME PATTERN WARNING: Turn off heater and let cool before cleaning. WARNING: If yellow tipping occurs, your heater could pro- duce increased levels of carbon CAUTION: You must keep monoxide. control areas, burner and circu- lating air passageways of heater NOTICE: Do not mistake orange clean. Inspect these areas of flames with yellow tipping. Dirt heater before each use. Have or other fine particles enter the heater inspect
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CLEANING AND SERVICE HINTS MAINTENANCE When Gas Pressure Is Too Low Continued • pilot will not stay lit • burner will have delayed ignition 1. Shut off the unit, including the pilot. Allow • heater will not produce specified heat the unit to cool for at least thirty minutes. • propane/LP gas supply may be low 2. Inspect burner, pilot for dust and dirt. You may feel your gas pressure is too low. If so, con- 3. Blow air across the ports/slots and holes in the tact your local natural or propane/LP
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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 in, there is no spark at ODS/ wrong pilot 2. Ignit
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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. Equipment shutoff valve not 3. Fully open equipment shutoff fully open valve 4. Thermocouple connection 4. Hand tighten until snug, then loose at control valve tighten 1/4 turn more 5
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TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Yellow flame during burner 1. Not enough air 1. Check burner for dirt and combustion debris. If found, clean burner (see Cleaning and Mainte- nance, page 16) 2. Gas regulator defective 2. Replace gas regulator 3. Clogged or dirty burner 3. Clean burner (see Cleaning and Maintenance, page 16) Slight smoke or odor during 1. Residues from manufacturing 1. Problem will stop after a few initial operation processes hours of operation
