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119677-01G

13

INSTALLATION

Continued

1.  Apply  pipe  joint  sealant  lightly  to  male 

threads of gas fitting (provided). Connect 
approved flexible gas hose to gas regula

-

tor of heater (see Figure 11).

 

IMPORTANT:

  Hold  gas  regulator  with 

wrench when connecting flexible gas hose.

2. 

Position heater base assembly in fireplace. 

3.  Mark  screw  locations  through  holes  in 

front  panel  of  base  (see  Figure  12).  If 

installing in a brick-bottom fireplace, mark 

screw locations in mortar joint of bricks.

4.  Remove heater base from fireplace.

5.  Drill holes at marked locations using 3/16" 

drill bit. 

6.  Attach base, through holes in front panel 

of base, to fireplace floor using masonry 

screws  provided  in  hardware  package 
(see Figure 12).

7.  Connect to gas supply. See 

Connecting 

To Gas Supply

.

Heater Gas Regulator

Flexible Gas Hose (if 
allowed by local codes)

Figure 11 - Attaching Flexible Gas Hose to 

Heater Gas Regulator

Figure 12 - Attaching Base to Fireplace 

Floor

Masonry Screw

CONNECTING TO GAS SUPPLY

  WARNING:  This  appliance 

requires  a  1/2"  NPT  (National 

Pipe Thread) inlet connection to 

the pressure regulator.

 WARNING: A qualified service 

person must connect heater to gas 

supply. Follow all local codes.

  CAUTION:  Never  connect 

propane/LP  fireplace  directly 

to the propane/LP supply. This 

heater requires an external regu-

lator  (not  supplied).  Install  the 

external regulator between the 

heater and propane/LP supply.

 WARNING: Never connect 

natural gas fireplace to private 

(non-utility)  gas  wells.  This 

gas  is  commonly  known  as 

wellhead gas.

Installation Items Needed

Before installing heater, make sure you have 

the items listed below.

•  external regulator (supplied by installer)
•  piping (check local codes)
•  sealant (resistant to propane/LP gas)
•  equipment shutoff valve *
•  test gauge connection *
•  sediment trap
•  tee joint
•  pipe wrench
•  approved  flexible  gas  line  with  gas  con

-

nector  (if  allowed  by  local  codes)  (not 
provided) 

* A  CSA  design-certified  equipment  shutoff 

valve with 1/8" NPT tap is an acceptable al-
ternative to test gauge connection. Purchase 

the optional CSA design-certified equipment 

shutoff valve from your dealer.

For  propane/LP  units,  the  installer  must 

supply  an  external  regulator.  The  external 
regulator will reduce incoming gas pressure. 
You must reduce incoming gas pressure to 
between 11" and 14" of water. If you do not re-

duce incoming gas pressure, heater regulator 

damage could occur. Install external regulator 
with the vent pointing down as shown in Figure 

13, page 14. Pointing the vent down protects 
it from freezing rain or sleet.

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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