Desa VN20BT - Manuals - manualsarea.com

Page 2 - Air for Combustion and Ventilation; section on page 5 of this manual.; TABLE OF CONTENTS; State of Massachusetts:; wealth of Massachusetts.

www.desatech.com 107886-01J 2 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, servic...

Page 3 - SAFETY INFORMATION; Get fresh; Air for

www.desatech.com 107886-01J 3 SAFETY INFORMATION IMPORTANT: Read this owner’s manual carefully and completely b e f o r e t r y i n g t o a s s e m b l e , operate or service this heater. Improper use of this heater can cause serious injury or death from burns, fire, explosion, electrical shock and ...

Page 4 - LOCAL CODES; National Fuel Gas Code, ANSI; UNPACKING; Continued; Front Panel; PRODUCT INFORMATION; SAFETY DEVICE

www.desatech.com 107886-01J 4 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 heater shuts off, do not relight until you provide fresh, outside air. If heater keeps shutting off, have it serviced. 8. Do not run...

Page 5 - National Fuel; Unusually Tight Construction; Ventilation Air From Outdoors; Confined and Unconfined Space

www.desatech.com 107886-01J 5 AIR FOR COMBUSTION AND VENTILATION WARNING: This heater shall not be installed in a conﬁned space or unusually tight con- struction unless provisions are provided for adequate combus- tion and ventilation air. Read the following instructions to insure proper fresh air f...

Page 6 - National Fuel Gas Code,

www.desatech.com 107886-01J 6 AIR FOR COMBUSTION AND VENTILATION Continued DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION Determining if You Have a Conﬁned or Unconﬁned Space Use this work sheet to determine if you have a con- ﬁned or unconﬁned space. Space: Includes the room in which you will insta...

Page 7 - VENTILATION AIR; Ventilation Air From Inside Building; National Fuel Gas; Ventilation Air From Outdoors; Section 5.3, Air for Combustion and Ventilation; AIR FOR COMBUSTION; INSTALLATION; CHECK GAS TYPE

www.desatech.com 107886-01J 7 VENTILATION AIR Ventilation Air From Inside Building This fresh air would come from an adjoining un- conﬁned space. When ventilating to an adjoining unconﬁned space, you must provide two perma- nent openings: one within 12” of the ceiling and one within 12” of the ﬂoor ...

Page 8 - INSTALLATION ITEMS; Accessories; LOCATING HEATER; Air

www.desatech.com 107886-01J 8 INSTALLATION ITEMS Before installing heater, make sure you have the items listed below.• for propane/LP gas, external regulator (supplied by installer) • piping (check local codes)• sealant (resistant to propane/LP gas)• equipment shutoff valve *• ground joint union• te...

Page 9 - THERMOSTAT SENSING BULB; Figure 5 - Attaching Thermostat Sensing; INSTALLING HEATER TO WALL; Mounting Bracket; Removing Front Panel Of Heater; Marking Screw Locations; WARNING: Maintain minimum

www.desatech.com 107886-01J 9 THERMOSTAT SENSING BULB The thermostat sensing bulb has been placed 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 loca...

Page 10 - Attaching Mounting Bracket To Wall; Figure 9 - Folding Anchor; Placing Heater On Mounting Bracket

www.desatech.com 107886-01J 10 INSTALLATION Continued Attaching Mounting Bracket To Wall Note: Wall anchors, mounting screws and spacers are in hardware package. The hardware package is provided with heater. Attaching To Wall Stud Method For attaching mounting bracket to wall studs1. Drill holes at ...

Page 11 - MOUNTING HEATER TO FLOOR; Mounting Base Feet to Heater; Figure 13 - Installing Base Feet; CONNECTING TO GAS SUPPLY

www.desatech.com 107886-01J 11 4. If installing bottom mounting screws into hollow or solid wall, install wall anchors. Follow steps 1 through 4 under Attaching To Wall Anchor Method , page 10 If installing bottom mounting screw into wall stud, drill holes at marked locations using 9/64" drill b...

Page 12 - Typical Inlet Pipe Diameters; Figure 14 - External Regulator With Vent; Natural Gas; Burner; CHECKING GAS CONNECTIONS

www.desatech.com 107886-01J 12 IMPORTANT: Hold the pressure regulator with wrench when connecting it to gas piping and/or ﬁttings. Do not over tighten pipe connection to regulator. The regulator body could be damaged. CAUTION: Use only new, black iron or steel pipe. Internally-tinned copper tubing m...

Page 13 - tor has been installed between; ing to Gas Supply; Figure 16 - Equipment Shutoff Valve

www.desatech.com 107886-01J 13 INSTALLATION Continued CAUTION: For propane/LP gas, make sure external regula- tor has been installed between propane/LP supply and heater. See guidelines under Connect- ing to Gas Supply , page 11. PRESSURE TESTING GAS SUPPLY PIPING SYSTEMTest Pressures In Excess Of 1...

Page 14 - Ignitor Button; OPERATING HEATER; FOR YOUR SAFETY; low these instructions exactly,; LIGHTING

www.desatech.com 107886-01J 14 5. Turn control knob counterclockwise 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 sec...

Page 15 - Shutting Off Heater; Lighting; INSPECTING HEATER; To Turn Off Gas to Appli-

www.desatech.com 107886-01J 15 BURNER FLAME PATTERN WARNING: If yellow tipping occurs, your heater could pro- duce increased levels of carbon monoxide. NOTICE: Do not mistake orange ﬂames with yellow tipping. Dirt or other ﬁne particles enter the heater and burn causing brief patches of orange ﬂame....

Page 16 - CLEANING AND; Pilot Assembly; BURNER PILOT AIR INLET; CABINET; Air Passageways; To Turn Off Gas To Appli-

www.desatech.com 107886-01J 16 Figure 23 - Correct Burner Flame Pattern Yellow Tipping Figure 24 - Incorrect Burner Flame Pattern 1/2 Glass Height Blue Flame 1/2 Glass Height CLEANING AND MAINTENANCE WARNING: Turn off heater and let cool before cleaning. CAUTION: You must keep control areas, burner ...

Page 17 - When Gas Pressure Is Too Low; TECHNICAL SERVICE

www.desatech.com 107886-01J 17 SPECIFICATIONS VN20BT VN30BT Btu (Variable) 10,000/20,000 15,000/30,000 Type Gas Natural Natural Ignition Piezo Piezo Pressure Regulator Setting 3" W.C. 3" W.C. Inlet Gas Pressure (in. of water) Maximum 10.5" 10.5" Minimum 4" 4" Dimensions, Inch...

Page 18 - TROUBLESHOOTING; WARNING: Turn off and unplug heater and let cool before servicing.; POSSIBLE CAUSE; ing and Maintenance

www.desatech.com 107886-01J 18 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 trouble...

Page 20 - IMPORTANT; S e e Wa r n i n g; OBSERVED PROBLEM; Cleaning

www.desatech.com 107886-01J 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 s...

Page 21 - Checking Gas Connec-; REPLACEMENT PARTS; PARTS UNDER WARRANTY; ACCESSORIES; For all piezo ignitor models.

www.desatech.com 107886-01J 21 TROUBLESHOOTING Continued POSSIBLE CAUSE 1. Gas leak. S e e Wa r n i n g statement on page 21 2. Control valve defective 1. Foreign matter between con- trol valve and burner 2. Gas leak. S e e Wa r n i n g statement on page 21 1. Not enough combustion/ven- tilation air...

Page 22 - ILLUSTRATED PARTS BREAKDOWN

www.desatech.com 107886-01J 22 ILLUSTRATED PARTS BREAKDOWN MODELSVN20BT, VP20BT VN30BT, VP30BT 2 3 5 6 8 9 10 10 11 12 13 14 16 18 19 4 7 1 15 17 20

Page 23 - PARTS LIST; listed under; PARTS AVAILABLE — NOT SHOWN

www.desatech.com 107886-01J 23 PARTS LIST This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 21 of this manual. KEY PART NUMBER NO. VN20BT VP20BT VN30BT VP30BT DESCRIPTION QTY. 1 097159-04 097159-04 097159-04 ...

Page 24 - WARRANTY INFORMATION; KEEP THIS WARRANTY; NOT A UPC

Model ____________________________________ Serial No. __________________________________ Date of Purchase ____________________________ WARRANTY INFORMATION KEEP THIS WARRANTY LIMITED WARRANTY VENT-FREE RESIDENTIAL GAS HEATERS DESA Heating Products warrants this product to be free from defects in mat...