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119677-01G

20

CLEANING AND MAINTENANCE

4.  Check injector holder located at the end of 

the burner tube again. Remove any large 

particles of dust, dirt, lint or pet hair with 
a soft cloth or vacuum cleaner nozzle.

5.  Blow air into the primary air holes on the 

injector holder.

6.  In case any large clumps of dust have now 

been pushed into the burner repeat steps 
3 and 4.

Clean pilot assembly also. A yellow tip on the 

pilot flame indicates dust and dirt in the pilot 

assembly. There is a small pilot air inlet hole 

about 2" from where the pilot flame comes out 

of the pilot assembly (see Figure 30). With the 

unit  off,  lightly  blow  air  through  the  air  inlet 

hole. You may blow through a drinking straw 
if compressed air is not available.

Figure 29 - Injector Holder On Outlet 

Burner Tube

Burner 
Tube

Injector Holder

Primary Air 
Inlet Holes

Ports/Slots

Figure 30 - Pilot Inlet Air Hole (Your pilot 

may vary from pilot shown)

Pilot Air 
Inlet Hole

Pilot Assembly

LOGS

•  If  you  remove  logs  for  cleaning,  refer  to 

Installing Logs

, page 16, to properly replace 

logs.

•  Replace log(s) if broken or chipped (dime-

sized or larger).

MAIN BURNER

Periodically inspect all burner flame holes with 
the  heater  running. All  slotted  burner  flame 
holes should be open with yellow flame pres

-

ent. All round burner flame holes should be 
open with a small blue flame present. Some 
burner flame holes may become blocked by 
debris  or  rust,  with  no  flame  present.  If  so, 
turn off heater and 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 

of  heater  clean.  Inspect  these 

areas of heater before each use. 

Have  heater  inspected  yearly 

by  a  qualified  service  person. 

Heater may need more frequent 

cleaning  due  to  excessive  lint 

from carpeting, pet hair, bedding 

material, etc.

  WARNING:  Failure  to  keep 

the  primary  air  opening(s)  of 

the burner(s) clean may result in 

sooting and property damage.

BURNER INjECTOR HOLDER AND 
PILOT AIR INLET HOLE

The  primary  air  inlet  holes  allow  the  proper 
amount of air to mix with the gas. This provides 

a clean burning flame. Keep these holes clear 
of dust, dirt, lint and pet hair. Clean these air in

-

let holes prior to each heating season. Blocked 
air holes will create soot. We recommend that 
you clean the unit every three months during 
operation and have heater inspected yearly by 

a qualified service person.

We also recommend that you keep the burner 
tube and pilot assembly clean and free of dust 
and dirt. To clean these parts we recommend 
using compressed air no greater than 30 PSI. 

Your local computer store, hardware store or 

home center may carry compressed air in a 

can. If using compressed air in a can, please 

follow the directions on the can. If you don’t 

follow directions on the can, you could dam

-

age the pilot assembly.

1.  Shut off unit, including pilot. Allow unit to 

cool for at least thirty minutes.

2.  Inspect burner, pilot and primary air inlet 

holes on injector holder for dust and dirt 
(see Figure 29).

3.  Blow air through the ports/slots and holes 

in the burner.

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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