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119677-01G

18

OFF

PILOT

ON

OPERATION

Continued

Figure 24 - Pilot

Ignitor Electrode

Thermocouple

Pilot 
Burner

Figure 23 - Control Knob and Ignitor 

Button Location

Control Knob

Electronic Ignitor Button

VARIABLE CONTROL 

OPERATION

The variable control valve can be set to any 

heat setting and flame height desired, by sim

-

ply turning the control knob until that setting 
is attained. Even the lowest setting provides 

realistic flames and glowing embers from two 

burners. Selecting higher settings produces 
greater heat output. This results in increased 
heating comfort.

  WARNING:  Do  not  operate 

heater  between  locked  posi-

tions.

 CAUTION: Do not try to ad-

just heating levels by using the 

equipment shutoff valve.

NOTICE: During initial operation 

of new heater, burning logs will 

give off a paper-burning smell. 

Orange flame will also be pres-

ent. Open damper or window to 

vent smell. This will only last a 

few hours. 

Note: Home owners generally prefer to oper-
ate  their  heater  with  the  chimney  damper 
closed. This will put all the heat into the room. 
However, there may be times you will desire 
the full flames of the High heat setting but will 
find the heat output excessive. You can open 
the chimney damper (if you have one) fully or 
partially to release some of the heat. 

  WARNING:  Damper  handle 

will  be  hot  if  heater  has  been 

running. 

1.  STOP!  Read  the  safety  information  on 

page 17.

2.  Make sure equipment shutoff valve is fully 

open.

3.  Press in and turn control knob clockwise 

 to the OFF position.

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, page 17. If you 
don’t smell gas, go to the next step.

5.  Press in control knob and turn counter-

clockwise 

  to  the  PILOT  position. 

Keep control knob pressed in for five (5) 

seconds (see Figure 23).

 

Note:  You  may  be  running  this  heater 
for the first time after hooking up to gas 
supply. If so, the control knob may need 
to be pressed in for 30 seconds or more. 
This will allow air to bleed from the gas 
system.

6.  With control knob pressed in, press and 

release ignitor button. This will light pilot. 
The pilot is attached to the front burner. If 

needed, keep pressing ignitor button until 

pilot lights.

 

Note:  If  pilot  does  not  light,  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. 

7.  Keep control knob pressed in for 30 sec-

onds after lighting pilot. After 30 seconds, 

release control knob.

• If control knob does not pop out when 

released, turn off gas supply and contact 
a qualified service person or gas supplier 

for repairs.

 

Note:  If  pilot  goes  out,  repeat  steps  3 
through 7. 

8.  Push  in  and  turn  control  knob  counter-

clockwise 

 to the HI position. Both 

burners should light. Set control knob to 
desired setting. 

9.  To leave pilot lit and shut off burners only: 

turn control knob clockwise 

 to the 

HI position. Press in and turn control knob 
clockwise 

 to the PILOT position. 

Summary of Contents for VUL18NV

Page 1: ...one in your building Immediatelycallyourgassupplierfromaneighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department Installation and service...

Page 2: ...g masonry or UL127 fac tory built fireplace or in a listed ventless firebox en closure It is design certi fied for these installations in accordance with ANSI Z21 11 2 Exception Do not install this ap...

Page 3: ...s Make certain you read and understand all warnings Keep this manual for reference It is your guide to safe and proper operation of this fireplace WARNING Any change to this heater or its controls can...

Page 4: ...f you operate heater with doors closed heat buildup inside fireplace will cause glass to burst Make sure there are no obstructions across openings of fireplace 8 To prevent the creation of soot follow...

Page 5: ...ety information 1 Remove logs and heater base assembly from carton Note Do not pick up heater base assem bly by burners This could damage heater Always handle base assembly by grate 2 Remove all prote...

Page 6: ...to determine if you have a confined or unconfined space Space Includes the room in which you will install fireplace plus any adjoining rooms with door less passageways or ventilation grills between t...

Page 7: ...ace because the actual Btu Hr used is more than the maximum Btu Hr the space can sup port You must provide additional fresh air Your options are as follows A Rework worksheet adding the space of an ad...

Page 8: ...ualified chimney cleaner Creosote will ignite if highly heated Adirtychimneyfluemay createanddistributesootwithin the house Inspect chimney and firebox flue for damage If dam aged repair flue and fire...

Page 9: ...as but not both Gas type is indicated on the rating plate Field conversion is not permitted INSTALLATION AND CLEARANCES For Vent Free Operation WARNING Maintain the minimum clearances If you can provi...

Page 10: ...ncombustible mate rial is more than 12 you may need the hood accessory to deflect heat away from your mantel shelf See Figure 5 and Figures 6 and 7 page 9 for minimum clearances IMPORTANT If you canno...

Page 11: ...l Clearances When Using Hood Floor Clearances A If installing appliance on the floor level you must maintain the minimum distance of 14 to combustibles see Figure 8 B If combustible materials are less...

Page 12: ...flue open ing you must provide Attach damper clamp so the minimum permanent flue opening will be maintained at all times Area of Various Standard Round Flues Diameter Area 5 20 sq inches 6 29 sq inch...

Page 13: ...upply Follow all local codes CAUTION Never connect propane LP fireplace directly to the propane LP supply This heaterrequiresanexternalregu lator not supplied Install the external regulator between th...

Page 14: ...all in piping system between fuel supply and heater Locate sediment trap where trapped matter is not likely to freeze A sediment trap traps moisture and contaminants This keeps them from going into he...

Page 15: ...m by either opening propane LP supply tank valve for propane LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air Figure 15 Equipment Shutoff Valve Ope...

Page 16: ...Right Log Support Bracket Right Front of Chassis 5 Place middle right log over front right and bottom logs as shown in Figure 20 Be sure hole in middle right log seats over pin in bottom log 6 Place m...

Page 17: ...all Front Log Bracket Bracket 8 For VUL36NV PV models position left and right control cover logs as shown in Figure 21 These may be placed as de sired to hide controls Do not place these logs on heate...

Page 18: ...utoff valve is fully open 3 Press in and turn control knob clockwise to the OFF position 4 Wait five 5 minutes to clear out any gas Then smell for gas including near the floor If you smell gas STOP Fo...

Page 19: ...orrect pilot flame pattern Figure 26 shows an incorrect pilot flame pat tern The incorrect pilot flame is not touching the thermocouple This will cause the thermo couple to cool When the thermocouple...

Page 20: ...d let cool Remove blockage blocked burner flame holes will create soot WARNING Turn off heater and let cool before cleaning CAUTION You must keep control areas burners and circulating air passageways...

Page 21: ...n PILOT position 4 Air in gas lines when in stalled 5 Depleted gas supply pro pane LP only 6 ODS pilot is clogged 7 Gas regulator setting is not correct REMEDY 1 Reconnect ignitor cable 2 Free ignitor...

Page 22: ...stem to reset Repeat ignition operation 3 Fully open equipment shut off valve 4 A Contact local natural or propane LP gas company B Clean ODS pilot see Cleaning and Maintenance page 20 or replace ODS...

Page 23: ...et warm up for a minute 2 Operate burners until air is removed from line Have gas line checked by local natural or propane LP gas company 3 Observe minimum installa tion clearances see pages 9 through...

Page 24: ...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 or gas control defecti...

Page 25: ...eating Products Technical Ser vice Department at 1 866 672 6040 When calling DESA Heating Products have ready your name your address model and serial numbers of your heater how heater was malfunctioni...

Page 26: ...desatech com 119677 01G 26 Parts Models VUL18NV VUL18PV VUL24NV VUL24PV VUL30NV VUL30PV vul36nv vul36pv 11 13 31 10 30 4 1 8 3 12 8 2 5 6 7 28 22 23 8 20 17 24 26 19 21 15 2 8 23 33 29 32 9 18 16 25...

Page 27: ...e 1 117934 02 Inlet Tube 1 16 099387 08 Pilot Tube 1 17 098508 01 Valve Retainer Nut 1 18 119583 05 Control Valve Natural 1 119583 06 Control Valve Propane LP 1 19 098325 01 Roll Pin 1 20 098462 03 Co...

Page 28: ...21699 10 121699 16 Front Left Log 1 3 121699 02 121699 08 121699 14 Middle Right Log 1 4 121699 03 121699 09 121699 15 Middle Left Log 1 5 121699 01 121699 07 121699 13 Bottom Log 1 6 121699 06 121699...

Page 29: ...Parts on page 25 of this manual KEY NO PART NO DESCRIPTION QTY 1 121699 07 Bottom Log 1 2 121699 14 Middle Right Log 1 3 121699 15 Middle Left Log 1 4 121699 20 Front Left Log 1 5 121699 21 Front Righ...

Page 30: ...SERIES CIRCULATING FB36NCA FB42NC SERIES fireboxes NON CIRCULATING For all log models DAMPER CLAMP GA6080 For all models Permanently opens chimney flue damper for vented operation LAVA ROCK GA6060 Fo...

Page 31: ...___________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________...

Page 32: ...proved by 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 origin...

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