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VENT-FREE NATURAL GAS HEATER

OWNER’S OPERATION AND INSTALLATION MANUAL

Save this manual for future reference.

Models: VN2000BA, VN2000BTA, and VN2800BTA

®

WARNING: If the information in this manual is not followed 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 qualified installer, service

agency, or the gas supplier.

®

Summary of Contents for Vanguard VN2000BA

Page 1: ...ot 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 depar...

Page 2: ...n cause serious injury or death from burns fire explosion electrical shock and carbon monoxide poisoning WARNING ICON G 001 DANGER Carbon monoxide poisoning may lead to death Carbon Monoxide Poisoning Early signs of carbon monoxide poisoning resemble the flu with headaches dizziness or nausea If you have these signs the heater may not be working properly Get fresh air at once Have heater serviced ...

Page 3: ...gh fresh air is available See Fresh Air for Combus tion and Ventilation pages 5 through 8 6 Never run heater in small closed room Open door into next room to help ventilate 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 heater where flammable liquids or vapors are used or stored under dusty conditions 9 Never plac...

Page 4: ...inform dealer where you bought heater Figure 1 Vent Free Natural Gas Heater Model VN2800BTA Shown Ignitor Button Control Knob Heater Cabinet Front Panel PRODUCT FEATURES Safety Device This heater has a pilot with an Oxygen Depletion Sensor Shutoff System ODS The ODS pilot is a required feature for vent free room heaters The ODS pilot shuts off the heater if there is not enough fresh air Piezo Igni...

Page 5: ...n The air that leaks around doors and windows may provide enough fresh air for combustion and ventilation However in buildings of unusually tight construction you must provide additional fresh air Unusually tight construction is defined as construction where a walls and ceilings exposed to the outside atmosphere have a continu ous water vapor retarder with a rating of one perm or less with open in...

Page 6: ...Hr Gas furnace ___________________ BTU Hr Vented gas heater ___________________ BTU Hr Gas fireplace logs ___________________ BTU Hr Other gas appliances ___________________ BTU Hr Total ___________________ BTU Hr Example Gas water heater 40 000 BTU Hr Vent free heater 18 000 BTU Hr Total 58 000 BTU Hr Do not include direct vent gas appliances Direct vent draws combustion air from the outdoors and...

Page 7: ...oor on the wall connecting the two spaces see options 1 and 2 Figure 2 You can also remove door into adjoining room see option 3 Figure 2 WARNING ICON G 001 WARNING Rework worksheet adding the space of the adjoining unconfined space The combined spaces must have enough fresh air to supply all appliances in both spaces Figure 2 Ventilation Air from Inside Building Or Remove Door into Adjoining Room...

Page 8: ...pen to the outdoors These spaces include attics and crawl spaces Follow the National Fuel Gas Code NFPA 54 ANSI Z223 1 Section 5 3 Air for Combustion and Ventilation for required size of ventilation grills or ducts IMPORTANT Do not provide openings for inlet or outlet air into attic if attic has a thermostat controlled power vent Heated air entering the attic will activate the power vent Figure 3 ...

Page 9: ... heater is designed to be mounted on a wall WARNING ICON G 001 WARNING Maintain the minimum clearances shown in Figure 4 page 10 If you can provide greater clearances from floor ceiling and joining wall You can locate heater on floor away from a wall An optional floor mounting stand is needed Purchasethefloormountingstandfromyourdealer SeeAccessories page30 WARNING Never install the heater in a be...

Page 10: ...r proper operation Attaching Thermostat Sensing Bulb 1 Remove thermostat sensing bulb from holders inside heater Route through slot opening in bottom of heater 2 Place clamp on thermostat sensing bulb as shown in Figure 5 Clamp is provided in hardware package 3 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 therm...

Page 11: ...2 Attaching to wall anchor Attaching to wall stud This method provides the strongest hold Insert mounting screws through mounting bracket and into wall studs Attaching to wall anchor This method allows you to attach mounting bracket to hollow walls wall areas between studs or to solid walls concrete or masonry Decide which method better suits your needs Either method will provide a secure hold for...

Page 12: ...ews through bracket and into wall studs 4 Tighten screws until mounting bracket is firmly fastened to wall studs Attaching to wall anchor method For attaching mounting bracket to hollow walls wall areas between studs or solid walls concrete or masonry 1 Drill holes at marked locations using 5 16 drill bit For solid walls concrete or masonry drill at least 1 deep 2 Fold wall anchor as shown in Figu...

Page 13: ...nstalling Bottom Mounting Screws 1 Locate two bottom mounting holes These holes are near bottom on back panel of heater see Figure 12 2 Mark screw locations on wall 3 Remove heater from mounting bracket 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 12 If installing bottom mounting screw into...

Page 14: ...ap in supply line as shown in Figure 13 page 15 Locate sediment trap where it is within reach for cleaning Locate sediment trap where trapped matter is not likely to freeze A sediment trap traps moisture and contaminants This keeps them from going into heater controls If sediment trap is not installed or is installed wrong heater may not run properly WARNING ICON G 001 CAUTION Use only new black i...

Page 15: ... manual shutoff valve from gas supply piping system Pressures in excess of 1 2 PSIG will damage heater regulator 2 Cap off open end of gas pipe where manual shutoff valve was connected 3 Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter Continued Ground Joint Union Note Burner bracket not shown for clarity WARNING ICON G 001 WARNI...

Page 16: ... shutoff valve see Figure 14 2 Open main gas valve located on or near gas meter 3 Make sure control knob of heater is in the OFF position 4 Check all joints from manual shutoff valve to thermostat gas valve models VN2000BTA and VN2800BTA or control valve model VN2000BA see Figure 15 Apply mixture of liquid soap and water to gas joints Bubbles forming show a leak 5 Correct all leaks at once 6 Light...

Page 17: ...turn the gas control knob Never use tools If the knob will not push in or turn by hand don t try to repair it call a qualified service technician or gas supplier Force or attempted repair may result in a fire or explosion D Do not use this appliance if any part has been under water Immediately call a qualified service technician to inspect the appliance and to replace any part of the control syste...

Page 18: ...of burner The pilot can be seen through the glass panel If needed keep pressing ignitor button until pilot lights Note If pilot does not stay lit refer to Troubleshooting pages 24 through 27 Also contact a qualified service person or gas supplier for repairs Until repairs are made light pilot with match To light pilot with match see Manual Lighting Procedure page 19 WARNING ICON G 001 CAUTION Do n...

Page 19: ...es the burner flame height At times the room may exceed the set temperature If so the burner will shut off The burner will cycle back on when room temperature drops below the set temperature The control knob can be set to any heat level between HI and LO Note The thermostat sensing bulb measures the temperature of air near the heater cabinet This may not always agree with room temperature dependin...

Page 20: ...Use only your hand to push in or turn the gas control knob Never use tools If the knob will not push in or turn by hand don t try to repair it call a qualified service technician or gas supplier Force or attempted repair may result in a fire or explosion D Do not use this appliance if any part has been under water Immediately call a qualified service technician to inspect the appliance and to repl...

Page 21: ...If needed keep pressing ignitor button until pilot lights Note If pilot does not stay lit refer to Troubleshooting pages 24 through 27 Also contact a qualified service person or gas supplier for repairs Until repairs are made light pilot with match To light pilot with match see Manual Lighting Procedure page 22 Continued WARNING ICON G 001 CAUTION Do not try to adjust heating levels by using the m...

Page 22: ...TING HEATER Model VP2000BA Continued Shutting Off Heater 1 Turn control knob clockwise Clockwise to the PILOT position 2 Press in control knob and turn clockwise Clockwise to the OFF position 3 Turn off all electric power to the appliance if service is to be performed Shutting Off Burner Only pilot stays lit 1 Turn control knob clockwise Clockwise to the PILOT position MANUAL LIGHTING PROCEDURE 1 ...

Page 23: ... other fine particles enter the heater and burn causing brief patches of orange flame Figure 22 Correct Burner Flame Pattern Figure 23 Incorrect Burner Flame Pattern If burner flame pattern is incorrect as shown in Figure 23 turn heater off see To Turn Off Gas to Appliance page 19 models VN2000BTA and VN2800BTA or page 22 model VN2000BA see Troubleshooting pages 24 through 27 WARNING ICON G 001 WA...

Page 24: ...eshooting items are listed in order of operation WARNING ICON G 001 WARNING Turn off and unplug heater and let cool before servicing Only a qualified service person should service and repair heater WARNING ICON G 001 CAUTION Never use a wire needle or similar object to clean ODS pilot This can damage ODS pilot unit POSSIBLE CAUSE 1 Ignitor electrode posi tioned wrong 2 Ignitor electrode broken 3 I...

Page 25: ...e control valve OBSERVED PROBLEM When ignitor button is pressed there is spark at ODS pilot but no ignition ODS pilot lights but flame goes out when control knob is released POSSIBLE CAUSE 1 Gas supply turned off or manual shutoff valve closed 2 Control knob not in PILOT position 3 Control knob not pressed in while in PILOT position 4 Air in gas lines when installed 5 ODS pilot is clogged 6 Gas re...

Page 26: ...and Mainte nance page 24 2 Replace gas regulator 1 Problem will stop after a few hours of operation 1 Turn control knob to LO position and let warm up for a minute 2 Operate burner until air is removed from line Have gas line checked by local natural gas company 3 Observe minimum installation clearances see Figure 4 page 10 4 Clean burner see Cleaning and Mainte nance page 24 or replace burner ori...

Page 27: ...LEM Heater produces a clicking ticking noise just after burner is lit or shut off Heater produces unwanted odors Heater shuts off in use ODS operates Gas odor even when control knob is in OFF position Gas odor during combustion REMEDY 1 This is common with most heaters If noise is excessive contact qualified service person 1 Ventilate room Stop using odor causing products while heater is running 2...

Page 28: ...t will not stay lit burner will produce flames and soot heater will backfire when lit You may feel your gas pressure is too low or gas quality is bad If so contact your local natural gas supplier VN2000BA VN2000BTA VN2800BTA B T U Variable 9 000 18 000 14 000 28 000 Type Gas Natural Only Natural Only Ignition Piezo Piezo Pressure Regulator Setting 3 W C 3 W C Inlet Gas Pressure in of water Maximum...

Page 29: ...t s call DESA International s Technical Service Department at 1 800 323 5190 When calling DESA International have ready your name your address model number of your heater how heater was malfunctioning type of gas used propane or natural gas purchase date Usually we will ask you to return the defective part to the factory Parts Not Under Warranty Contact authorized dealers of this product If they c...

Page 30: ...page of this manual MANUAL SHUTOFF VALVE GA5010 For all models Manual shutoff valve with 1 8 NPT tap FLOOR MOUNTING STAND Models VN2000BA VN2000BTA GA4000B Model VN2800BTA GA4010B For locating heater on the floor away from a wall Complete installation instructions included FAN KITS GA2100A and GA3100 For all models Provides better heat distribution Makes heater more efficient Complete installation...

Page 31: ...31 099570 ILLUSTRATED PARTS LIST Manual Control Model VN2000BA Parts list on page 33 12 ODS Pilot Assembly Parts list on page 33 26 24 34 19 29 33 20 12 1 12 2 ...

Page 32: ...32 099570 1 2 3 4 5 6 7 8 9 10 10 11 12 13 14 15 16 17 19 20 21 22 23 24 25 26 27 28 30 31 32 18 NOTE Thermostat Gas Valve Shown See Page 31 for Manual Control Valve ...

Page 33: ...nitor Electrode 1 13 099120 02 099120 02 099126 02 Burner 1 14 099387 03 099387 03 099387 03 3 16 Pilot Tubing 1 15 098251 02 098251 02 098251 04 Injector 1 16 098250 01 098250 01 098250 01 Injector Holder 1 17 098867 04 098867 04 098867 04 Pressure Regulator 1 18 099553 01 099553 01 099553 01 Pilot Shield 1 19 098519 01 098518 01 098518 01 3 8 Outlet Burner Tubing 1 20 098298 03 098297 03 098297 ...

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Page 36: ...s are not reimbursable under this warranty and are the responsibility of the owner To the full extent allowed by the law of the jurisdiction that governs the sale of the product this express warranty excludes any and all other expressed warranties and limits the duration of any and all implied warranties including warranties of merchantability and fitness for a particular purpose to two years from...

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