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122136-01C

4

SAFETy

Continued

Figure 1 - Yellow Flame Vent-Free Gas 

Log Heater

11. Before using furniture polish, wax, carpet 

cleaner or similar products, turn heater 
off. If heated, the vapors from these prod

-

ucts may create a white powder residue 
within burner box or on adjacent walls or 
furniture.

12. This heater needs fresh, outside air ven

-

tilation to run properly. This heater has an 
Oxygen Depletion Sensing (ODS) safety 
shutoff system. The ODS shuts down the 
heater if not enough fresh air is available. 
See 

Air for Combustion and Ventilation,

 

page 5. If heater keeps shutting off, see 

Troubleshooting,

 page 20.

13. Do not run heater

• where flammable liquids or vapors are 

used or stored

• under dusty conditions

14. Do not use this heater to cook food or burn 

paper or other objects.

15. Do not use heater if any part has been ex-

posed to or under water. Immediately call 

a qualified service technician to inspect 

the room heater and to replace any part 
of the control system and any gas control 
which has been under water.

16. Do not operate heater if any log is broken. 

Do not operate heater if a log is chipped 

(dime-sized or larger).

17. Turn heater off and let cool before servic-

ing. Only a qualified service person should 

service and repair heater.

18. Operating  heater  above  elevations  of 

4,500 feet could cause pilot outage.

19. Provide adequate clearances around air 

openings.

PRODUCT 

IDENTIFICATION

2.  Do not place propane/LP supply tank(s) 

inside any structure. Locate propane/LP 
supply tank(s) outdoors (propane/LP units 
only).

3.  To prevent performance problems, the use 

of a propane/LP tank 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 phone in your building

• immediately call your gas supplier from 

a neighbor’s phone. Follow the gas sup-
plier’s instructions

• if  you  cannot  reach  your  gas  supplier, 

call the fire department

5.  This  heater  shall  not  be  installed  in  a 

bedroom or bathroom unless installed as 
a vented appliance (see 

Installing Damper 

Clamp Accessory for Vented Operation

page  11).  This  gas  log  set  may  not  be 
installed as a vented appliance in a bed-
room or bathroom in the Commonwealth 
of Massachusetts.

6.  Do  not  burn  solid-fuel  in  a  masonry  or 

UL127  factory-built  fireplace  in  which  a 

vent-free room heater is installed.

7.  Before installing in a solid fuel burning fire

-

place, the chimney flue and firebox must 
be cleaned of soot, creosote, ashes and 
loose paint by a qualified chimney cleaner. 

Creosote will ignite if highly heated. A dirty 

chimney  flue  may  create  and  distribute 

soot  within  the  house.  Inspect  chimney 

flue and firebox for damage. If damaged, 
repair flue before operating heater.

8.  If fireplace has glass doors, never operate 

this heater with glass doors closed. If 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.

9.  This log heater is designed to be smoke-

less. If logs ever appear to smoke, turn 
off  heater  and  call  a  qualified  service 

person.

 

Note: During initial operation, slight smok-
ing  could  occur  due  to  log  curing  and 
heater burning manufacturing residues.

 

10. To prevent the creation of soot, follow the 

instructions in 

Cleaning and Maintenance, 

page 18.

Log Set

Grate

Heater Base

Control Knob

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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