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VENT-FREE NATURAL GAS HEATER
OWNER'S OPERATION AND INSTALLATION MANUAL
WARNING: If the information in this manual
is not followed exactly, a fire or explosion
may result causing property damage, per-
sonal 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 per-
formed by a qualified installer, service
agency, or the gas supplier.
Models: VN6A and VN12
Save this manual for future reference.
®
WARNING
: Improper installation,
adjustment, alteration, service, or
maintenance can cause injury or
property damage. Refer to this
manual for correct installation and
operational procedures. For assis-
tance or additional information
consult a qualified installer, ser-
vice agency, or the gas supplier.
G S
A
®
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Table of Contents
Related Manuals for Vanguard VN12
Summary of Contents for Vanguard VN12
- Page 1 VENT-FREE NATURAL GAS HEATER OWNER’S OPERATION AND INSTALLATION MANUAL Models: VN6A and VN12 WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, per- sonal injury, or loss of life.
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Page 2: Table Of Contents
Accessory ... 21 Parts List (Model VN6A) ... 22 Illustrated Parts Breakdown (Model VN6A) ... 22 Parts List (Model VN12) ... 23 Illustrated Parts Breakdown (Model VN12) ... 23 Warranty Information ... Back Cover WARNING ICON G 001 IMPORTANT: Read this Owner’s Manual carefully and completely before trying to assemble, operate, or service this heater. - Page 3 • in high traffic areas • in windy or drafty areas (VN12) or ON position (VN6A). Never set control knob between locked positions. Poor combustion and higher levels of carbon monoxide may result. or two inches. When used without fresh, outside air, heater may give off carbon monoxide gas.
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Page 4: Product Identification
Front Panel Figure 1 - Vent-Free Natural Gas Heater (Model VN12 Shown) Install and use heater with care. Follow all local codes. In the absence of local codes, use the latest edition of National Gas Code ANSI Z223.1, also known as NFPA 54*. -
Page 5: Installing To Wall
INSTALLING TO WALL A qualified service person must install heater. Follow all local codes. CHECK GAS TYPE Use only natural gas. If your gas supply is not natural, do not install heater. Call dealer where you bought heater for proper type heater. INSTALLATION ITEMS Before installing heater, make sure you have the items listed below. - Page 6 CEILING 8" Minimum From Sides Of Heater Left Side FLOOR Figure 2 - Mounting Clearances As Viewed From Front of Heater INSTALLING HEATER TO WALL Marking Screw Locations 1. Determine where you will locate heater. WARNING ICON Maintain minimum clearances shown in Figure 3. If you can, provide greater clearances from floor and joining wall.
- Page 7 Installing Two Mounting Screws Note: Wall anchors and mounting screws are in hardware package. The hardware package is provided with heater. Attaching to wall stud method For attaching mounting screw to wall stud 1. Drill hole at marked location using 9/64" drill bit. 2.
- Page 8 Placing Heater On Mounting Screws 1. Locate two keyhole slots on back panel of heater (see Figure 7). 2. Place large openings of slots over screwheads. Slide heater down until screws are in small portion of slots. Figure 7 - Location Of Keyhole Slots On Back Panel Of Heater Removing Front Panel Of Heater 1.
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Page 9: Connecting To Gas Supply
CONNECTING TO GAS A qualified service person must connect heater to gas supply. Follow all local codes. SUPPLY Never connect heater to private (non-utility) gas wells. This gas is commonly known as well-head gas. IMPORTANT: Check gas line pressure before connecting heater to gas line. Gas line pressure must be no greater than 14 inches of water. -
Page 10: Checking Gas Connections
CHECKING CONNECTIONS IMPORTANT: Hold pressure regulator with wrench when connecting it to gas piping and/or fittings. 3/8" NPT Pipe Nipple Manual Shutoff Valve * From Gas Meter (4" W.C. to 10.5" W.C. Pressure) 3" Minimum Figure 10 - Gas Connection * An A.G.A. - Page 11 4. Check all joints of gas supply piping system. Apply mixture of liquid soap and water to gas joints. Bubbles forming show a leak. 5. Correct all leaks at once. Test Pressures Equal To or Less Than 1/2 PSIG 1. Close manual shutoff valve (see Figure 11). 2.
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Page 12: Operating Heater
1. STOP! Read the safety information above. 2. Make sure manual shutoff valve is fully open. 3. Turn control knob clockwise PILOT HIGH Figure 13 - Control Knob In The OFF Position (Model VN12 Shown) WARNING G 001 to the OFF position. Clockwise... - Page 13 4. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow “B” in the safety information at the top of page 12. If you don’t smell gas, go to the next step. 5.
- Page 14 WARNING ICON G 001 When running heater, set control knob at LOW or HIGH locked positions (VN12) or ON position (VN6A). Never set control knob between locked positions. Poor combustion and higher levels of carbon monoxide may result. WARNING ICON Do not try to adjust heating levels by using the manual shutoff valve.
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Page 15: Inspecting Burner
Shutting Off Heater 1. Turn control knob clockwise Shutting Off Burner Only (pilot stays lit) 1. Turn control knob clockwise 1. Remove front panel (see Figure 8, page 8). 2. Follow steps 1 through 6 under LIGHTING INSTRUCTIONS, pages 12 and 13. 3. -
Page 16: Cleaning And Maintenance
Figure 18 shows a correct burner flame pattern. Figure 19 shows an incorrect burner flame pattern. Figure 18 - Correct Burner Flame Pattern (Model VN12 Shown) Figure 19 - Incorrect Burner Flame Pattern (Model VN12 Shown) If burner flame pattern is incorrect, as shown in Figure 19 •... -
Page 17: Troubleshooting
TROUBLE- SHOOTING Note: All troubleshooting items are listed in order of operation. WARNING ICON G 001 Turn off heater and let cool before servicing. Only a qualified service person should service and repair heater. WARNING ICON Never use a wire, needle, or similar object to clean ODS/pilot. This can damage ODS/pilot unit. - Page 18 POSSIBLE OBSERVED CAUSE PROBLEM ODS/pilot lights but 1. Control knob not fully flame goes out when pressed in control knob is 2. Control released pressed in long enough 3. Manual shutoff valve not fully open 4. Thermocouple connec- tion loose at control valve 5.
- Page 19 POSSIBLE OBSERVED CAUSE PROBLEM 1. Plaque damaged Burner plaque(s) does 2. Inlet gas pressure is too not glow 3. Control knob set be- tween locked positions 1. Residues from manu- Slight smoke or odor facturing processes during initial opera- tion 1.
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Page 20: Technical Service
TIONS, page 10) 2. Replace control valve 1. Take apart gas tubing valve and remove foreign mat- 2. Locate and correct all leaks (see CHECKING GAS CONNECTIONS, page 10) VN12 VN6A 6,000/12,000 6,000 Natural Only Natural Only Piezo Piezo 3" W.C. -
Page 21: Service Hints
SERVICE HINTS REPLACEMENT PARTS SERVICE PUBLICATIONS ACCESSORY When gas pressure is too low • pilot will not stay lit • burner(s) will have delayed ignition • heater will not produce specified heat When gas quality is bad • pilot will not stay lit •... -
Page 22: Parts List (Model Vn6A)
PARTS LIST VN6A PART NUMBER DESCRIPTION 098304-01 Screw, #10 x 3/8" 099467-01 Front Panel Assembly 099318-01 Grill Guard 098342-01 Grill Guard Clip 099469-01 Reflector Assembly M15823-37 Screw Hex #8 x 1/4" 503329 ODS/Pilot Assembly 098514-01 Thermocouple 098594-01 Ignitor Electrode 099884-01 Burner Assembly 099056-04 Injector... -
Page 23: Parts List (Model Vn12)
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. VN12 PART NUMBER DESCRIPTION 098304-01 Screw, #10 x 3/8" 099467-01 Front Panel Assembly... -
Page 24: Warranty Information
WARRANTY INFORMATION Model Serial No. Date Purchased Always specify model and serial numbers when communicating with the factory. We reserve the right to amend these specifications at any time without notice. The only warranty applicable is our standard written warranty. We make no other warranty, expressed or implied. VANGUARD VENT-FREE RESIDENTIAL GAS HEATERS DESA International warrants this product and any parts thereof, to be free from defects in material and workmanship for two years from the date of first purchase, provided that the product has been properly...