Vanguard VMH2800TNC Owner'S Operation And Installation Manual Download Page 19

19

103506

OWNER’S MANUAL

When gas pressure is too low

• pilot will not stay lit

• burner(s) will have delayed ignition

• heater will not produce specified heat

TROUBLE
SHOOTING

Continued

TECHNICAL
SERVICE

You may have further questions about in-
stallation, operation, or Trouble Shooting.
If so, contact DESA International’s Techni-
cal Service Department at 1-800-323-5190.

 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. Follow the

gas supplier’s instructions.

• If you cannot reach your gas supplier, call the fire department.

IMPORTANT:

 Operating heater where im-

purities in air exist may create odors. Clean-
ing supplies, paint, paint remover, cigarette
smoke, cements and glues, new carpet or
textiles, etc., create fumes. These fumes
may mix with combustion air and create
odors.

SERVICE HINTS

When gas quality is bad

• pilot will not stay lit

• burner(s) 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.

OBSERVED PROBLEM

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

POSSIBLE CAUSE

1. Metal expanding while heating or

contracting while cooling

1. Heater burning vapors from paint, hair

spray, glues, etc. (see 

IMPORTANT

statement above)

2. Gas leak. 

See Warning statement at

top of page

1. Not enough fresh air is available
2. Low line pressure
3. ODS/pilot is partially clogged

1. Gas leak. 

See Warning statement at

top of page

2. Control valve defective

1. Foreign matter between control valve

and burner

2. Gas leak. 

See Warning statement at

top of page

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. Locate and correct all leaks (see

Checking Gas Connections, page 13)

1. Open window and/or door for ventilation
2. Contact local natural gas company
3. Clean ODS/pilot (see Cleaning and

Maintenance, page 16)

1. Locate and correct all leaks (see

Checking Gas Connections, page 13)

2. Replace control valve

1. Take apart gas tubing and remove

foreign matter

2. Locate and correct all leaks (see

Checking Gas Connections, page 13)

Summary of Contents for VMH2800TNC

Page 1: ...ds 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 cal...

Page 2: ...See Air for Combustion and Ventilation pages 5 through 7 6 If heater shuts off do not relight until you provide fresh outside air If heater keeps shutting off have it serviced 7 Do not run heater wher...

Page 3: ...n fg pd f AS DF KI GL FJ I als kd idk oe m kg o dk irln fg pd fA SD FK IG LF JI als kd idk oe m kg o dk irln fg pd f AS DF KI GL FJ I als kd idk oe m kg o dk irln fg pd fA SD FK IG LF JI als kd idk oe...

Page 4: ...ghten both set screws on the adjusting plate with slotted screwdriver 7 Repeat steps 1 through 6 for other side 8 Place the assembled trim on front of heater cabinet Attach on top and sides with four...

Page 5: ...The air that leaks around doors and win dows may provide enough fresh air for combustion and ventilation However in buildings of unusually tight construction you must provide additional fresh air Unu...

Page 6: ...lace logs ___________________ Btu Hr Other gas appliances ___________________ Btu Hr Total ___________________ Btu Hr Example Gas water heater 30 000 Btu Hr Vent free heater 28 000 Btu Hr Total 58 000...

Page 7: ...tion for required size of ventilation grills or ducts WARNING Reworkworksheet adding the space of the adjoining unconfined space The combined spaces must have enough fresh airtosupplyallappliancesinbo...

Page 8: ...ounted on a wall Youcannotuseoptionalmantelifmounting heater on a wall WARNING Never install the heater in a bedroom or bathroom in a recreational vehicle wherecurtains furniture cloth ing or other fl...

Page 9: ...holes are 16 inches apart from their centers Attach mounting bracket to wall in one of two ways 1 Attaching to wall stud 2 Attaching to wall anchor Attaching to wall stud This method pro vides the str...

Page 10: ...r from mounting bracket 4 If installing bottom mounting screws into hollow or solid wall install wall anchors Follow steps 1 through 4 un der Attaching To Wall Anchor Method If installing bottom mount...

Page 11: ...4 Using a Phillips screwdriver secure hearth base to heater with four sheet metal screws see Figure 18 5 Stand heater up on base 6 Place hearth insert in hearth base as shown in Figure 19 7 Assemble b...

Page 12: ...s line pressure must be no greater than 14 inches of water If gas line pressure is higher heater regulator damage could occur CAUTION Use only new black iron or steel pipe Inter nally tinned copper tu...

Page 13: ...To or Less Than 1 2 PSIG 1 Close manual shutoff valve see Fig ure 21 2 Pressurize supply piping system by ei ther using compressed air or opening main gas valve located on or near gas meter 3 Check al...

Page 14: ...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 15 Ignitor Electrode FOR...

Page 15: ...strike match Hold match to pilot until pi lot lights 4 Keep control knob pressed in for 30 seconds after lighting pilot After 30 seconds release control knob 5 Replace front panel GRH OV 009 GOOD PIL...

Page 16: ...ybyaquali fied service person Heater may need more frequent cleaning due to excessive lint from carpeting bedding material etc ODS PILOT AND BURNER Use a vacuum cleaner pressurized air or small soft b...

Page 17: ...ezo ignitor POSSIBLE CAUSE 1 Ignitor electrode positioned wrong 2 Ignitor electrode broken 3 Ignitor electrode not connected to ignitor cable 4 Ignitor cable pinched or wet 5 Piezo ignitor nut is loos...

Page 18: ...s company 3 Observe minimum installation clearances see Figure 10 page 8 4 Clean burner see Cleaning and Maintenance page 16 or replace burner orifice TROUBLE SHOOTING Continued OBSERVED PROBLEM Burne...

Page 19: ...ocal natural gas supplier OBSERVED PROBLEM 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 ev...

Page 20: ...original replacement part s call DESA International s Parts Department at 1 800 972 7879 for referral information When calling DESA International have ready model number of your heater the replacement...

Page 21: ...embly and installation instructions included GS601 Black Surround For locating heater in front of an existing fireplace The sturdy steel construction is accented with decorative brass trim Com plete i...

Page 22: ...22 103506 GAS RESIDENTIAL HEATERS 12 1 12 2 1 2 9 10 10 11 12 13 14 15 16 17 19 20 22 23 24 25 8 6 21 7 18 1 3 5 4 27 26 1 VMH2800TNC...

Page 23: ...or Holder 1 17 099415 07 Pressure Regulator 1 18 099553 01 Pilot Shield 1 19 103255 01 3 8 Outlet Burner Tubing 1 20 103256 01 3 8 Inlet Tubing 1 21 103837 03 Bracket Support 1 22 098275 01 3 8 NPT Pl...

Page 24: ...oper installation Travel diagnostic cost labor transportation and any and all such other costs related to repairing a defective heater will be the responsibility of the owner TO THE FULL EXTENT ALLOWE...

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