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124868-01A

16

TROUbLEShOOTING

Continued

OBSERVED PROBLEM POSSIBLE CAUSE

REMEDY

Pilot  lights  but  flame  goes 
out  when  control  knob  is 
released.

1. Gas  control  knob  not  fully 

pressed in.

2. Gas control knob not pressed 

in long enough.

3. Equipment shutoff valve not 

fully open.

4. Pilot flame not touching ther

-

mocouple, which allows ther

-

mocouple  to  cool,  causing 
pilot  flame  to  go  out.  This 
problem could be caused by 
one or both of the following:

  A) Low gas pressure
  B) Dirty or partially clogged 

pilot 

5. Thermocouple  connection 

loose at control valve.

6. Thermocouple damaged.
7. Control valve damaged.

1. Press  in  gas  control  knob 

fully.

2. After  pilot  lights,  keep  gas 

control  knob  pressed  in  30 
seconds.

3. Fully open equipment shutoff 

valve.

4. A)  Contact  local  natural  or 

propane/LP gas company

  B) Clean pilot (see 

Cleaning 

and  Maintenance, 

page  13) 

or replace pilot assembly.

5. Hand tighten until snug, then 

tighten 1/4 turn more.

6. Replace pilot assembly.
7. Replace control valve.

Delayed ignition burner.

1. Manifold  pressure  is  too 

low.

2. Burner  porting  or  orifice 

clogged.

3. Orifice misaligned.
4. Air shutter setting incorrect.

1. Contact local propane/LP or 

natural gas company.

2. Clean burner (see 

Cleaning 

and  Maintenance

,  page  13) 

or replace burner orifice.

3. Straighten alignment.
4. Set  air  shutter  to  correct 

opening (see 

Specifications

page 14).

Burner  backfiring  during 
combustion.

1. Burner orifice is clogged or 

damaged.

2. Damaged burner.
3. Gas regulator defective.

1. Clean burner (see 

Cleaning 

and  Maintenance

,  page  13) 

or replace burner orifice.

2. Replace damaged burner.
3. Replace gas control.

Slight smoke or odor during 
initial operation.

1. Residues from manufacturing 

processes and logs curing.

1. Problem will stop after a few 

hours of operation.

Heater produces a whistling 
noise when burner is lit.

1. Turning gas control knob to HI 

position when burner is cold.

2. Air in gas line.

3. Dirty  or  partially  clogged 

burner orifice.

1. Turn  gas  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 propane/
LP or natural gas company.

3. Clean burner (see 

Cleaning 

and  Maintenance

,  page  13) 

or replace burner orifice.

Fireplace produces a click

-

ing/ticking  noise  just  after 
burners are lit or shut off.

1. Metal expanding while heat

-

ing  or  contracting  while 
cooling.

1. This  is  normal.  If  noise  is 

excessive,  contact  qualified 
service person.

Summary of Contents for VO36NRA

Page 1: ...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 servi...

Page 2: ...less An odor making agent is added to the gas The odor helps you detect a gas leak However the odor added to the gas can fade Gas may be present even though no odor exists Make certain you read and un...

Page 3: ...polish wax carpet cleaner or similar products turn fireplace off If heated the vapors from these prod ucts may create a white powder residue within burner box or on adjacent walls or furniture 9 Do n...

Page 4: ...ew Left Side View Locating Fireplace Planning Plan where you will install the fireplace This will save time and money later when you in stall the fireplace Before installation consider the following 1...

Page 5: ...for Combustible to Wall Minimum 16 from Side Wall Example IMPORTANT Make sure fireplace is level If fireplace is not level log set will not work properly Use dimensions shown for rough openings to cre...

Page 6: ...ide to Inside Height Figure 4a 37 45 411 2 52 11 32 74 TOP VIEW FOR 36 MODELS Figure 4b 43 45 485 8 60 13 16 86 TOP VIEW FOR 42 MODELS Figure 4c Figure 5 Installing Firebox Steel Stud or Steel Framing...

Page 7: ...Hole Top View of Rod Layout Rod Front Hole Ring Screen Identification Label Location INSTALLING FIREPLACE HOOD HS36 HS42 1 Remove protective film from stainless hood 2 Align three notches located on...

Page 8: ...gas pressure to between 11 and 14 of water If you do not reduce incoming gas pressure control valve damage could occur Install external regula tor with the vent pointing down as shown in Figure 8 Poin...

Page 9: ...g into heater controls If sediment trap is not installed or is installed wrong heater may not run properly CAUTION Avoid damage to gas control Hold gas control with wrench when connecting it to gas pi...

Page 10: ...to equip ment shutoff valve for natural gas or propane LP supply to equipment shutoff valve for propane LP see Figure 12 or 13 Apply noncorrosive leak detection fluid to all joints Bubbles forming sh...

Page 11: ...nce Do not touch any electric 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 ga...

Page 12: ...nob pressed in press and release ignitor button This will light pilot If needed keep pressing ignitor button until pilot lights Note If pilot does not stay lit contact a qualified service person or ga...

Page 13: ...ance off see To Turn Off Gas to Appliance page 12 see Troubleshooting page 15 Figure 19 Correct Burner Flame Pattern Yellow Flames with Orange Streaks Figure 20 Incorrect Burner Flame Pattern Dark Ora...

Page 14: ...FULLY OPEN V O42NRA Series Rating Variable 32 000 47 000 Btu Hr Gas Type Natural Ignition Piezo Manifold Pressure 3 5 W C Inlet Gas Pressure inches of water Max 10 5 W C Min 5 0 W C Air Shutter 3 16 O...

Page 15: ...ro pane LP models only 6 Pilot is clogged 7 Gas regulator setting is not correct 1 Turn on gas supply or open equipment shutoff valve 2 Turn gas control knob to PILOT position 3 Press in gas control k...

Page 16: ...utter setting incorrect 1 Contact local propane LP or natural gas company 2 Clean burner see Cleaning and Maintenance page 13 or replace burner orifice 3 Straighten alignment 4 Set air shutter to corr...

Page 17: ...e Warning statement above 2 Control valve defective 1 Locate and correct all leaks see Checking Gas Connec tions page 9 2 Replace control valve Gas odor during combustion 1 Gas leak See Warning statem...

Page 18: ...els VO36NRa VO36PRa VO36NRRa VO36PRRa VO36NRHa VO36PRHa VO36NRRHa VO36PRRHa O36NRa O36PRa O36NRHa O36PRHa O36NRRa O36PRRa O36NRRHa AND O36PRRHa 27 28 29 30 24 21 25 5 6 7 8 9 13 26 17 18 19 2 1 3 4 23...

Page 19: ...acket 2 20 14396 3 8 x 3 8 Brass Adapter 1 21 107940 01 Fireplace Top 1 22 111817 08 Dormont T6 18 3 8 x 18 Flextube 1 23 119686 01 Log Set Retainer 2 24 20280 Top Spacer 4 25 20027 Firebrick Retainer...

Page 20: ...ls VO42NRa VO42PRa VO42NRRa VO42PRRa VO42NRHa VO42PRHa VO42NRRHa VO42PRRHa O42NRa O42PRa O42NRHa O42PRHa O42NRRa O42PRRa O42NRRHa AND O42PRRHa 5 7 6 25 34 3 4 12 11 10 20 16 9 8 13 18 18 17 14 22 21 1...

Page 21: ...20 14396 3 8 x 3 8 Brass Adapter 1 21 111817 08 Dormont T6 18 3 8 x 18 Flextube 1 22 116786 01 Fitting 1 2 FLR x 3 8 MPT 1 23 119686 02 Log Set Retainer 2 24 20027 Firebrick Retainer 2 25 119702 01 Hi...

Page 22: ...106658 01 Left White 107812 01 1 106658 02 Left Red 107812 02 1 108164 01 Left White Herr 108169 01 1 108164 02 Left Red Herr 108169 02 1 6 106659 01 Right White 107814 01 1 106659 02 Right Red 10781...

Page 23: ...we will ask you to return the part to the factory PARTS NOT UNDER WARRANTY Contact authorized dealers of this prod uct If they can t supply original replace ment part s call DESA Heating LLC at 1 866...

Page 24: ...y DESA Heating LLC Warranty parts must be obtained through authorized dealers of this prod uct and or DESA Heating LLC who will provide original factory replacement parts Failure to use original facto...

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