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122136-01C

12

INSTALLATION

Continued

INSTALLING HEATER BASE 
ASSEMBLY

 CAUTION: Do not remove the 

data plates attached to the heater 

base assembly. The data plates 

contain important warranty and 

safety information.

 WARNING: You must secure 

this heater to fireplace floor. If 

not, heater will move when you 

adjust controls. Moving heater 

may cause a gas leak.

 WARNING: If installing in a 

sunken  fireplace,  special  care 

is  needed.  You  must  raise  the 

fireplace  floor  to  allow  access 

to  heater  control  panel.  This 

will  insure  adequate  air  flow 

and guard against sooting and 

controls being damaged. Raise 

fireplace floor with noncombus

-

tible material. Make sure material 

is secure.

  CAUTION:  Do  not  pick  up 

heater  base  assembly  by  the 

burner.  This  could  damage 

heater.  Only  handle  base  as

-

sembly by grates.

IMPORTANT:

 Make sure heater burners are 

level.  If  heater  is  not  level,  heater  will  not 

work properly.

Installation Items Needed

•  hardware package (provided with heater)
•  approved flexible gas hose (not provided) 

(if allowed by local codes) 

•  sealant (resistant to propane/LP gas, not 

provided)

•  electric drill with 3/16" drill bit
•  flathead screwdriver

1.  Apply  pipe  joint  sealant  lightly  to  male 

threads of the fitting to be threaded into 
gas regulator. Connect approved flexible 

gas hose to gas regulator of heater (see 
Figure 11).

 

IMPORTANT:

  Hold  gas  regulator  with 

wrench when connecting flexible gas hose.

2.  Locate  masonry  screws  in  hardware 

package.

3.  Position  heater  base  assembly  in  fire

-

place.

4.  Place  log  in  proper  position  on  heater 

base (see 

Installing Logs,

 page 15).

5.  Center heater base and logs front-to-front 

and side-to-side in fireplace.

6.  Carefully  remove  log  without  moving 

heater base.

7.  Mark  screw  locations  through  holes  in 

mounting  brackets  (see  Figure  12).  If 

installing in a brick-bottom fireplace, mark 

screw locations in mortar joint of bricks.

8.  Remove heater base from fireplace.

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

drill bit.

10. Attach  base  assembly  to  fireplace  floor 

using two masonry screws (in hardware 
package) (see Figure 12).

Figure 12 - Attaching Base Assembly to 

Fireplace Floor

Heater Gas 
Regulator

Flexible Gas Hose  
(if allowed by local codes)

Figure 11 - Attaching Flexible Gas Hose 

to Heater Gas Regulator

Fitting 

Masonry 
Screw

Mounting 
Bracket

Summary of Contents for VSB18N

Page 1: ...se any phone 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...

Page 2: ...id fuel burning masonry or UL127 factory built fireplace or in a listed ventless firebox enclo sure It is design certified for these installations in accordance with ANSI Z21 11 2 Exception Do not ins...

Page 3: ...ll 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 be dangerous WARNING Do not use a blowe...

Page 4: ...ank of less than 100 lbs capacity is not recommended propane LP units only 4 If you smell gas shut off gas supply do not try to light any appliance do not touch any electrical switch do not use any ph...

Page 5: ...heaters Non thermostat models may also be operated as a vented decorative ANSI Z21 60 product by opening flue damper Safety Pilot This heater has a pilot with an Oxygen Deple tion Sensing ODS safety s...

Page 6: ...se volume is less than 50 cubic feet per AIR FOR COMBUSTION AND VENTILATION Continued 1 000 Btu per hour 4 8 m3 per kw of the ag gregate input rating of all appliances installed in that space and an u...

Page 7: ...asCode or applicable local codes VENTILATION AIR Ventilation Air From Inside Building This fresh air would come from an adjoining unconfined space When ventilating to an adjoining unconfined space you...

Page 8: ...heat resistant sealant Do not seal chimney flue damper Installation WARNING Never install the heater in a bedroom or bathroom unless installed as a vented appliance see page 11 in a recreational vehi...

Page 9: ...ceiling should not be less than 42 Figure 4 Minimum Clearance for Combustible to Wall Minimum 16 from Side Wall Example INSTALLATION Continued NOTICE Manualcontrolheaters maybeusedasaventedproduct Ifs...

Page 10: ...t required clearances between fireplace opening and mantel shelf If you do not meet the clearances listed below you will need a hood Determining Minimum Mantel Clearance If you meet minimum clearance...

Page 11: ...ree reasons for operating your heater in the vented mode 1 The fireplace does not meet the clearance to combustibles requirements for vent free operation 2 State or local codes do not permit vent free...

Page 12: ...lant resistant to propane LP gas not provided electric drill with 3 16 drill bit flathead screwdriver 1 Apply pipe joint sealant lightly to male threads of the fitting to be threaded into gas regulato...

Page 13: ...ill reduce incoming gas pressure You must reduce incoming gas pressure to between 11 and 14 of water If you do not reduce incom ing gas pressure heater regulator damage could occur Install external re...

Page 14: ...lator 2 Cap off open end of gas pipe where equip ment shutoff valve was connected 3 Pressurize supply piping system by either opening propane LP supply tank valve for propane LP gas or opening main ga...

Page 15: ...check to see if flames contact any log Ifso repositionlogaccordingto the log installation instructions in this manual Flames contact ing log will create soot It is very important to install these logs...

Page 16: ...causing property damage per sonal injury or loss of life A This appliance has a pilot which must be lighted by hand When lighting the pilot follow these instructions exactly B BEFORE LIGHTING smell a...

Page 17: ...0 seconds release control knob Note If pilot goes out repeat steps 3 through 7 If control knob does not pop out when released contact a qualified service person or gas supplier for repairs 8 Slightly...

Page 18: ...ols the heater will shut down If pilot flame pattern is incorrect as shown in Figure 22 turn heater off see To Turn Off Gas to Ap pliance page 17 see Troubleshooting page 20 Note The pilot flame on na...

Page 19: ...older 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 Figure 23 Injector Holder On Outlet Burner Tube Bu...

Page 20: ...on 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 OBSERVED PROBLEM When control knob is pressed in and turned t...

Page 21: ...act local natural or propane LP gas company 1 Contact local natural or propane LP gas company 2 Clean burner see Cleaning and Maintenance page 18 or replace burner orifice 1 Clean burner see Cleaning...

Page 22: ...burner 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 page 8 4 Clean burner see Cleaning and Maintenance...

Page 23: ...see Checking Gas Con nections page 14 1 Open window and or door for ventilation 2 Contact local natural or propane LP gas company 3 Clean ODS pilot see Cleaning and Maintenance page 18 1 Locate and c...

Page 24: ...uct If they can t supply original replacement part s call DESA Heating LLC at 1 866 672 6040 When calling DESA Heating LLC have ready your name your address model and serial numbers of your heater how...

Page 25: ...8 2195 KS MO AR 816 842 3911 www washerparts com East Coast Energy Products 10 East Route 36 W Long Branch NJ 07764 732 870 8809 1 800 755 8809 www njplaza com ecep 21st Century 2950 Fretz Valley Road...

Page 26: ...www desatech com 122136 01C 26 17 14 15 3 16 18 11 10 4 2 12 8 5 16 13 7 9 1 17 17 Parts Variable Manually Controlled HL18P HL18N VSB18P VSB18N HL24P HL24N VSB24P AND VSB24N...

Page 27: ...ith Ignitor LP 1 9 122141 01 Manual Valve Outlet Tube 1 10 122146 01 Natural Gas Plate 1 11 107186 05 Injector 1 107186 06 Injector 1 107186 07 Injector 1 107186 08 Injector 1 12 098354 01 Control Kno...

Page 28: ...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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