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28

100353

TROUBLE-

SHOOTING

Continued

OBSERVED
PROBLEM

Burner backfiring
during combustion.

Yellow flame during
burner combustion.

Slight smoke or odor
during initial operation.

Burner fails to
respond to thermo-
stat.

Heater produces a
whistling noise when
burner is lit.

POSSIBLE
CAUSE

1. Burner orifice is

clogged or damaged.

2. Burner damaged.
3. Gas regulator defective.
4. Delayed ignition.

1. Not enough air.

2. Gas regulator defective.

1. Residues from manu-

facturing processes.

1. Pilot flame not lit.

2. Pilot flame not properly

heating end of thermo-
couple.

3. Pilot burner orifice

clogged or damaged.

4. Control valve defec-

tive.

5. Temperature at thermo-

stat bulb satisfied.

1. Air in gas line.

2. Air passageways on

heater blocked.

3. Dirty or partially

clogged burner orifice.

REMEDY

1. Clean burner (see Clean-

ing and Maintenance,
page 25) or replace
burner orifice.

2. Replace burner.
3. Replace control valve.
4. See above.

1. Check burner for dirt and

debris. If found, clean
burner (see Cleaning and
Maintenance
, page 25.

2. Replace control valve.

1. Problem will stop after a

few hours of operation.

1. Light pilot burner (see

Lighting Instructions,
page 20).

2. Pilot flame needs adjust-

ing. Contact a qualified
service person.

3. Clean pilot burner (see

Cleaning and Mainte-
nance
, page 25).

4. Replace control valve.

1. Operate burner until air is

removed from line. Have
gas line checked by local
natural gas company.

2. Observe minimum instal-

lation clearances (see
Figure 3, page 7).

3. Clean burner (see Clean-

ing and Maintenance,
page 25) or replace
burner orifice.

Summary of Contents for GVB35N

Page 1: ...iatelycallyourgassupplierfrom 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...

Page 2: ...rmanent Fresh Air Ventilation 18 Example 2 Locating Heater in Confined Closed Area 19 Ventilating Confined Area 19 Operating Heater 20 For Your Safety Read Before Lighting 20 Lighting Instructions 20...

Page 3: ...of this heater 1 A qualified service person must install heater and venting system 2 Use only natural gas Do not convert heater to use different fuel type 3 If you smell gas Shut off gas supply Do not...

Page 4: ...young children when they are in the same room as heater Heater will remain hot for a time after shutdown Let surface cool before touching 10 Do not use heater as a cooking device 11 Do not alter heat...

Page 5: ...Control Knob Draft Hood Outlet for Venting System Figure 2 Vented Natural Gas Heater Rear View Figure 1 Vented Natural Gas Heater Lower Front Access Panel Ignitor Button Control Valve PRODUCT IDENTIF...

Page 6: ...nd a control valve This results in the greatest heating comfort This can also result in lower gas bills INSTALLING HEATER piping check local codes sealant resistant to propane gas manual shutoff valve...

Page 7: ...ooring Place heater on metal or wood panel extending the full width and depth of heater as a fireplace insert in high traffic areas in windy or drafty areas CAUTION If you install the heater in a home...

Page 8: ...d you use flues classified as prefabri cated or masonry all fuel chimney or type B vent See Vent Types page 10 If using old vent check vent for soot creosote and loose particles If vent is damaged rep...

Page 9: ...d vent pipe horizontally through outside wall and terminate You must connect a vertical run of vent pipe to the horizontal run The vertical run must be at least 25 longer than the horizontal run Never...

Page 10: ...walled pipe Clearances to combustible construction must be in accordance with the listing of the particular type B vent Type B vents are currently listed as B 1 B 1 1 2 and B 2 The illustrations belo...

Page 11: ...loss of pressure will occur The gas supply line to your heater must be 1 2 inch in diameter or larger If the supply line branches to serve two or more heaters the line from the branch back to the gas...

Page 12: ...gas line Sediment Trap Control Valve Install sediment trap in supply line as shown in Figure 7 Locate sediment trap where it is within reach for cleaning Locate sediment trap where trapped matter is...

Page 13: ...ck all joints from propane supply tank to manual shutoff valve Apply mixture of liquid soap and water to gas joints Bubbles forming show a leak 4 Correct all leaks at once Pressure Testing Heater Gas...

Page 14: ...er Front Access Panel CAUTION Glass panels may have sharp edges Handle with care CAUTION Do not operate heater without glass panels installed Operating heater without glass panels will damage front of...

Page 15: ...t use Contact your Vanguard dealer for a replacement glass panel 8 Repeat steps 4 through 7 for all glass panels 9 Reinstall glass guard Reinstall lower front access panel of heater CAUTION Make sure...

Page 16: ...ust fans fireplaces clothes dryers and fuel burning appliances draw air from the house to operate This heater is a fuel burning appliance It uses air from inside the house for combustion It also uses...

Page 17: ...2 If you have a fireplace start a fire Build fire until flames are burning strongly 3 Turn on all exhaust fans These include exhaust fans for kitchen bathroom water heaters gas or electric etc 4 Turn...

Page 18: ...oor more and retest If spillage stops keep window or door open while using fire place Supply fresh outside air by a permanent method as soon as possible If spillage still occurs leave window or door o...

Page 19: ...ater in Unconfined Open Area page 17 to make sure fresh air ventilation is adequate When ventilating to an adjoining open area you must provide two permanent openings one within 12 of the ceiling and...

Page 20: ...ppliance and to replace any part of the control system and any gas control which has been under water PILOT VEILLEUSE HIGH HAUT LOW BAS DEPRESS FOR OFF APPUYER POUR ARR TER Figure 16 Control Knob and...

Page 21: ...ing ignitor button until pilot lights Note If pilot does not stay lit refer to Troubleshooting pages 25 through 29 Also contact a qualified service person or gas supplier for repairs Until repairs are...

Page 22: ...h Hold match to pilot until pilot lights 5 Follow steps 8 through 11 under Lighting Instructions page 21 OPERATING HEATER Continued TO TURN OFF GAS TO APPLIANCE Shutting Off Heater 1 Fully depress con...

Page 23: ...of carbon monoxide If burner flame is incorrect follow instructions on page 24 NOTICE Do not mistake orange flames with yellow flame Dirt or other fine dust particles enter the heater and burn causing...

Page 24: ...ellow Flame Flame Lifting Off of Burner Figure 21 Incorrect Burner Flame Patterns Figure 20 Correct Burner Flame Pattern If burner flame pattern is incorrect as shown in Figure 21 turn heater off see...

Page 25: ...combustion from lack of air causes the yellow flame This will deposit soot inside the combustion chamber and on the burner To clean combustion chamber and burner you must remove the burner from heate...

Page 26: ...stsparkgapto1 16 2 Replace ignitor 3 Replace ignitor 4 Reconnect ignitor cable 5 Free ignitor cable if pinched by any metal or tubing Keep ignitor cable dry 6 Tighten nut holding piezo ignitor to heat...

Page 27: ...Contact local natural gas company 2 Clean burner see Cleaning and Mainte nance page 25 or re place burner orifice OBSERVED PROBLEM Pilot lights but flame goes out when control knob is released Burner...

Page 28: ...d 1 Air in gas line 2 Air passageways on heater blocked 3 Dirty or partially clogged burner orifice REMEDY 1 Clean burner see Clean ing and Maintenance page 25 or replace burner orifice 2 Replace burn...

Page 29: ...most heaters If noise is excessive contact quali fied service person 1 Ventilate room Stop us ing odor causing prod ucts while heater is run ning 2 Find and correct all leaks see Checking Gas Connecti...

Page 30: ...bracket see Figure 22 9 Remove assembly from the rear of heater 10 To reinstall reverse above steps Turn on gas to heater and check for gas leaks Apply a mixture of liquid soap and water to all joint...

Page 31: ...burner to the right for clearance Rotate burner 90 and remove burner through lower front access opening 7 To reinstall reverse above steps Turn on gas to heater and check for gas leaks Apply a mixtur...

Page 32: ...4 5 Use socket or open end wrench to remove the old orifice from the orifice holder 6 Clean and replace orifice or replace with new orifice 7 Turn on gas to heater and check for gas leaks Apply a mixt...

Page 33: ...r will not produce specified heat When gas quality is bad pilot will not stay lit burner will produce yellow flames and soot heater will backfire when lit You may feel your gas pressure is too low or...

Page 34: ...n Grand Rapids MI 49504 616 791 4760 800 446 1446 Washer Equipment Co 1715 Main Street Kansas City MO 64108 KS MO AR 816 842 3911 Controls Inc 6820 Glenwood Ave Raleigh NC 27612 NC SC VA MD 919 787 22...

Page 35: ...ed with blower Purchase these heater accessories from your local dealer If they can not supply these accessories either contact your nearest Parts Central see page 34 or call DESA International s Part...

Page 36: ...36 100353 ILLUSTRATED PARTS LIST Burner Assembly 3 4 8 10 11 1 2 5 6 7 9 12 13 14 15 16 17 18 19 28 27 7 35 Model 6 50 Model 11 24 2 20 21 23 26 22 17 16 4 24 24 1 24 3 24 4 25 7...

Page 37: ...8 3 M11084 38 Screw 8 18 x 3 8 2 12 099211 01 099211 01 Screw 10 16 x 2 1 2 2 13 100207 01 100207 01 Control Valve 1 14 098265 01 098265 01 Elbow 1 15 098936 02 098936 02 Thermocouple Interrupter 1 1...

Page 38: ...01BR Hearth Assembly 1 includes items 5 7 4 100204 02 100204 01 Top Panel 1 5 098304 02 098304 02 Screw 6 20 x 3 8 2 6 M11084 26 Screw 10 16 x 3 8 17 M11084 26 Screw 10 16 x 3 8 19 7 100205 02BR 10020...

Page 39: ...________ _________________________________________________________________ _________________________________________________________________ ___________________________________________________________...

Page 40: ...lusive and may not be altered enlarged or changed by any distributor dealer or other person whomsoever DESA WILL NOT BE RESPONSIBLE FOR 1 Normal maintenance as outlined in the owner s operation and in...

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