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UNVENTED (VENT-FREE) BLUE FLAME GAS HEATER
SAFETY INFORMATION AND INSTALLATION MANUAL
18,000 BTU THERMOSTAT MODELS
LSL18NT, LSL18PT, SL18NT, SL18PT, VSL18NT AND VSL18PT
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 an
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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 Heater Cabinet to run properly. This heater has an Oxygen Depletion Sensing (ODS) safety shutoff Control Knob system. The ODS shuts down the heater if (under door) 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 for proper combustion. 7. If he
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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 can support) Continued _________Btu/Hr (actual amount of Btu/Hr used) Example: 51,200 Btu/Hr (maximum the space DETERMINING FRESH-AIR FLOW can support) FOR HEATER LOCATION 58,000 Btu/Hr (actual amount of Determining if You Have a Confined or Btu/Hr used) Unconfined Space The space in the above example is a confined space Us
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AIR FOR COMBUSTION Ventilated Outlet AND VENTILATION Attic 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 Inlet Air nent openings: one within 12" (30.4 cm) of the Crawl Space ceiling and one within 12" (30.4 cm) of the floor Figure 3 - Ventilation Air from Outdoors on the wa
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Installing Glass Panel INSTALLATION Items needed from hardware packet: Continued 1 - Bushing INSTALLATION ITEMS 4 - Black spacers Before installing heater, make sure you have the 4 - Retaining clips items listed below. 4 - 1.5" long screws 4 - Screw covers • for propane/LP gas, external regulator (supplied by installer) 1. Locate hardware packet and dark acrylic glass. • piping (check local codes) 2. Peel protective coating from both sides of glass. • sealant (resistant to propane/LP gas) 3. Sn
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INSTALLATION CAUTION: This heater cre- Continued ates warm air currents. These 4. For both ignitors, install ignitor wire only currents move heat to wall sur- when replacing front panel of heater after faces next to heater. Installing connecting to gas supply and checking gas heater next to vinyl or cloth wall connections (see pages 11 through 13). With bottom of front panel only 2" to 3" (5 to 7.6 coverings or operating heater cm) away from back panel, reach into lower where impuritie
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INSTALLATION 12" 13" (33 cm) (30.4 Continued cm) Min. INSTALLING HEATER TO WALL Only Insert Mounting 11" Mounting Bracket Screws Through Last (27.9 cm) Locate mounting bracket that has been taped to Hole On Each End Min. back panel of heater for shipping. Remove mount- ing bracket from back panel of heater. Floor Figure 10 - Mounting Bracket Clearances Figure 9 - Mounting Bracket Attaching To Wall Stud Method For attaching mounting bracket to wall studs Methods For Attaching Mounting Bracket
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INSTALLATION Continued 6. Insert mounting screws through bracket and into wall anchors. 7. Tighten screws until mounting bracket is firmly fastened to wall. Front View Placing Heater On Mounting Bracket 1. Locate two horizontal slots on back panel of heater. Heater 2. Place heater onto mounting bracket. Slide Wall horizontal slots onto stand-out tabs on mount- ing bracket. Horizontal Slots Spacer Side View Figure 14 - Installing Bottom Mounting Screws CONNECTING TO GAS SUPPLY WARNING: This
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in as in Install sediment trap supply line shown INSTALLATION Figure 16. Locate sediment trap where it is within Continued reach for cleaning. Locate sediment trap where For propane/LP gas, the installer must supply an trapped matter is not likely to freeze. A sediment external regulator. The external regulator will trap traps moisture and contaminants. This keeps reduce incoming gas pressure. You must reduce heater If them from going into controls. sediment incoming gas pressure to b
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PRESSURE TESTING HEATER GAS INSTALLATION CONNECTIONS Continued 1. Open equipment shutoff valve (see Figure 17). 2. For natural gas open main gas valve located WARNING: Never use an open on or near gas meter. For propane/LP gas open flame to check for a leak. Apply a propane/LP supply tank valve. noncorrosive leak detection fluid 3. Make sure control knob of heater is in the OFF position. to all joints. Bubbles forming show 4. Check all joints from equipment shutoff valve a leak. Correct a
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Operating Fan INSTALLATION The blower is connected to a thermostat. When unit Continued heats up, the fan will operate. A few minutes after CONNECTING TO ELECTRICAL unit cycles off or is turned off, the fan will shut SUPPLY off. The fan will cycle on and off in this manner. Note: If you have a heater with a thermostat, the heater and fan will not turn off and on at exactly WARNING: Fan accessory the same time. Fan cycle times will vary with the must be grounded. Fan comes heat setting
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OPERATING HEATER CAUTION: Do not try to ad- Continued just heating levels by using the LIGHTING equipment shutoff valve. INSTRUCTIONS 1. STOP! Read the safety information, page 14. 2. Make sure equipment shutoff valve is fully open. 3. Turn off any electric power to the appliance if service is to be performed. Figure 21 - Control Knob In The OFF 4. Turn control knob clockwise to the Position OFF position. 5. Wait five minutes to clear out any gas. Then OFF smell for gas, including near t
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Thermocouple OPERATING HEATER Continued Yellow Flame Note: The thermostat sensing bulb measures Pilot the temperature of air near the heater cabinet. Burner This may not always agree with room tem- perature (depending on housing construction, installation location, room size, open air tem- peratures, etc.). Frequent use of your heater will let you determine your own comfort levels. Figure 25 - Incorrect Pilot Flame Pattern MANUAL LIGHTING PROCEDURE BURNER FLAME PATTERN 1. Remove front pane
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1. Shut off the unit, including the pilot. Allow CLEANING AND the unit to cool for at least thirty minutes. MAINTENANCE 2. Inspect burner, pilot for dust and dirt. 3. Blow air through the ports/slots and holes in WARNING: Turn off heater the burner. and let cool before cleaning. 4. Never insert objects into the pilot tube. Clean the pilot assembly also. A yellow tip on the CAUTION: You must keep - pilot flame indicates dust and dirt in the pilot as sembly. There is a small pilot air inlet
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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. Ignitor
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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 released long enough control 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
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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 17) 2. Gas regulator defective 2. Replace gas regulator 3. Clogged or dirty burner 3. Clean burner (see Cleaning and Maintenance, page 17) Slight smoke or odor during 1. Residues from manufacturing 1. Problem will stop after a few initial operation processes hours of operatio
