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122136-01C

13

INSTALLATION

Continued

CONNECTING TO GAS SUppLY

  WARNING:  This  appliance 

requires  a  1/2"  NPT  (National 

Pipe Thread) inlet connection to 

the pressure regulator.

 WARNING: A qualified ser

-

vice person must connect heater 

to  gas  supply.  Follow  all  local 

codes.

  CAUTION:  Never  connect 

propane/LP heater directly to the 

propane/LP supply. Propane/LP 

heaters require an external regu

-

lator  (not  supplied).  Install  the 

external regulator between the 

heater and propane/LP supply.

 WARNING: For natural gas 

units,  never  connect  heater  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
* 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 gas, the installer must supply 

an  external  regulator. An  external  regulator 
will 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  regulator  with 
vent  pointing  down  as  shown  in  Figure  13. 

Pointing vent down protects it from freezing 

rain or sleet.

  CAUTION:  Use  only  new, 

black  iron  or  steel  pipe.  Inter

-

nally-tinned copper tubing may 

be used in certain areas. Check 

your  local  codes.  Use  pipe  of 

1/2" diameter or greater to allow 

proper gas volume to heater. If 

pipe is too small, undue loss of 

volume will occur.

Installation must include an equipment shutoff 
valve, union and plugged 1/8" NPT tap. Locate 

NPT tap within reach for test gauge hook up. 
NPT tap must be upstream from heater (see 

Figure 14, page 14).

IMPORTANT:

 Install equipment shutoff valve 

in an accessible location. Main gas valve is 
for turning on or shutting off gas to the ap-
pliance.
Check  your  building  codes  for  any  special 

requirements for locating equipment shutoff 
valve to fireplaces.

Apply pipe joint sealant lightly to male NPT 
threads. This will prevent excess sealant from 
going into pipe. Excess sealant in pipe could 
result in clogged heater valves.

  WARNING:  Use  pipe  joint 

sealant that is resistant to liquid 

petroleum (LP) gas.

Figure 13 - External Regulator With Vent 

Pointing Down

Propane/LP 
Supply Tank

External 
Regulator 
with Vent 
Pointing 
Down

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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