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UNVENTED (VENT-FREE) INFRARED GAS HEATER
SAFETY INFORMATION AND INSTALLATION MANUAL
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 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.
MODELS NZ108 AND NZ109
For more information, visit www.desatech.com
Actual heater may
vary from illustration
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Summary of Contents for Desa NZ108
- Page 1 SAFETY INFORMATION AND INSTALLATION MANUAL Actual heater may vary from illustration MODELS NZ108 AND NZ109 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.
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Page 2: Table Of Contents
TAbLE OF CONTENTS Safety Information .......... Specifications ............ 1 Local Codes............4 Wiring Diagrams ..........1 Product Identification ........... 4 Illustrated Parts Breakdown and Parts List.. Unpacking............4 Replacement Parts ..........5 Product Features ..........4 Service Hints ............. 5 Air For Combustion and Ventilation ..... -
Page 3: Safety Information
SAFETY INFORMATION Surface of heater becomes very Continued hot when running heater. Keep children and adults away from hot DANGER: Carbon monoxide surface to avoid burns or clothing poisoning may lead to death! ignition. Heater will remain hot for a time after shutdown. Allow Carbon Monoxide Poisoning: Early signs surface to cool before touching. -
Page 4: Local Codes
SAFETY INFORMATION pRODUCT Continued IDENTIFICATION 8. If heater shuts off, do not relight until you Control Knob provide fresh, outside air. If heater keeps Ignitor Button shutting off, have it serviced. 9. Do not run heater • where flammable liquids or vapors are used or stored •... -
Page 5: Air For Combustion And Ventilation
AIR FOR COMbUSTION Unusually Tight Construction The air that leaks around doors and windows AND VENTILATION may provide enough fresh air for combustion and ventilation. However, in buildings of un- WARNING: This heater shall usually tight construction, you must provide not be installed in a confined additional fresh air. - Page 6 AIR FOR COMbUSTION Example: 51,200 Btu/Hr (maximum the space can support) AND VENTILATION 60,000 Btu/Hr (actual amount of Continued Btu/Hr used) The space in the above example is a confined DETERMINING FRESH-AIR FLOW space because the actual Btu/Hr used is more FOR HEATER LOCATION than the maximum Btu/Hr the space can sup- port.
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Page 7: Installation
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 install this heater as your pri- 12" mary heat source. If you have a central heating system, you may Ventilation Grills run system’s circulating blower... - Page 8 INSTALLATION CAUTION: If you install the Continued heater in a home garage INSTALLATION ITEMS • heater pilot and burner must be at Before installing heater, make sure you have least 18" (45.7 cm) above floor the items listed below. • locate heater where moving •...
- Page 9 INSTALLATION Methods For Attaching Mounting Bracket To Wall Continued Only use last hole on each end of mounting THERMOSTAT SENSING bULb bracket to attach bracket to wall. These two holes are 14" (5.6 cm) apart from their cen- Locate thermostat sensing bulb. ters.
- Page 10 INSTALLATION Horizontal Slots 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. . Place mounting bracket onto wall. Line up last hole on each end of bracket with holes drilled in wall.
- Page 11 INSTALLATION CONNECTING TO GAS SUPPLy Continued WARNING: This appliance MOUNTING HEATER TO FLOOR requires a 3/8" NPT (National WITH OPTIONAL FLOOR KIT Pipe Thread) inlet connection to Mounting Base Feet to Heater the pressure regulator. Note: A 90° elbow is required for mounting this unit and must be installed BEFORE base WARNING: A qualified service feet to provide proper clearance (see Figure...
- Page 12 INSTALLATION Pressure Regulator Continued /8" NPT Pipe Regulator Nipple CAUTION: Use only new, Bracket Ground black iron or steel pipe. Inter- Heater Joint nally-tinned copper tubing may Cabinet Union be used in certain areas. Check your local codes. Use pipe of Tee Joint Equipment large enough diameter to allow...
- Page 13 INSTALLATION . Check all joints from gas meter for natural gas (see Figure 17) or propane/LP supply Continued tank for propane/LP gas, to equipment shutoff valve (see Figure 18). Apply a CAUTION: For propane/LP noncorrosive leak detection fluid to all gas, make sure external regula- joints.
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Page 14: Operating Heater
INSTALLATION OpERATING HEATER Continued FOR YOUR SAFETY READ CONNECTING TO ELECTRICAL bEFORE LIGHTING SUPPLy WARNING: If you do not fol- WARNING: Fan accessory low these instructions exactly, must be grounded. Fan comes a fire or explosion may result with a three-prong, grounding causing property damage, per- plug as shown in Figure 19, page sonal injury or loss of life. -
Page 15: Operating Heater
OpERATING HEATER TO SELECT HEATING LEvEL Continued 6. Turn control knob counterclockwise WARNING: When running to the PILOT position. Press in control heater, set control knob at knob for five (5) seconds. locked positions. Never set 7. With control knob pressed in, push down control knob between locked and release ignitor button. -
Page 16: Inspecting Heater
OpERATING HEATER INSpECTING HEATER Continued Check pilot flame pattern and burner flame pattern often. THERMOSTAT CONTROL PILOT FLAME PATTERN OPERATION Figure 23 shows a correct pilot flame pattern. The thermostatic control used on these Figure 24 shows an incorrect pilot flame pat- models differs from standard thermostats. -
Page 17: Cleaning And Maintenance
CLEANING AND We also recommend that you keep the burner tube and pilot assembly clean and free of dust MAINTENANCE and dirt. To clean these parts we recommend using compressed air no greater than 0 PSI. WARNING: Turn off heater Your local computer store, hardware store or and let cool before cleaning. -
Page 18: Troubleshooting
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... - Page 19 TROUbLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY ODS/pilot lights but flame 1. Control knob not fully 1. Press in control knob fully goes out when control knob pressed in is released . Control knob not pressed in 2. After ODS/pilot lights, keep long enough control knob pressed in 0 seconds...
- Page 20 TROUbLESHOOTING Continued WARNING: If you smell gas • Shut off gas supply. • 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. Fol- low the gas supplier’s instructions.
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Page 21: Specifications
SpECIFICATIONS Nz109 Nz108 • Propane/LP Gas • Natural Gas • 16,000 Btu/hr • 18,000 Btu/hr • Piezo Ignition • Piezo Ignition • Pressure Regulator Setting: 8" W.C. • Pressure Regulator Setting: 6" W.C. • Inlet Gas Pressure* (in. of water): •... -
Page 22: Illustrated Parts Breakdown
ILLUSTRATED pARTS bREAkDOWN CAbINET bODY MODELS Nz108 AND Nz109 See page 4 www.desatech.com 119171-01E... -
Page 23: Parts List
pARTS LIST This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 5 of this manual. NO. PART NO. DESCRIPTION 10767-0 Front Panel • • 10476-01 Grill Guard • •... -
Page 24: Illustrated Parts Breakdown And Parts List
ILLUSTRATED pARTS bREAkDOWN AND pARTS LIST BURNER ASSEMBLy MODELS Nz108 AND Nz109 This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 5 of this manual. ODS/Pilot Burner Assembly NZ108 and NZ109 NO. -
Page 25: Replacement Parts
• type of gas used (propane/LP or natural serial numbers of your heater ready. gas) You can also visit DESA Heating Products’ tech- • purchase date nical service web site at www.desatech.com. Usually, we will ask you to return the part to the factory. -
Page 26: Accessories
Purchase these heater accessories from your local dealer. If they can not supply these ac- cessories, either contact your nearest Parts Central (see page 7) or call DESA Heating Products at 1-866-67-6040 for referral in- formation. You can also write to the address listed on the back page of this manual. -
Page 27: Parts Central
pARTS CENTRAL These Parts Centrals are privately owned businesses. They have agreed to support our customer’s needs by providing original replacement parts and accessories. Tool & Equipment Co. Washer Equipment Co. 5 Manila Ave 1715 Main Street Hamden, CT 06514-0322 Kansas City, MO 64108-2195 1-800-97-755 KS, MO, AR... -
Page 28: Warranty Information
LIMITED WARRANTIES FOR NEW AND FACTORY RECONDITIONED pRODUCTS New Products: DESA Heating, LLC warrants this heater and any parts thereof, to be free of defects in materials and workmanship for two (2) years from the date of first purchase, when operated and maintained in accordance with the manufacturer's instructions.
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