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www.desatech.com

124452-01A

5

Install  and  use  heater  with  care.  Follow  all 
local  codes. In the absence  of local codes, 
use  the  latest  edition  of 

The  National  Fuel 

Gas Code ANSI Z223/NFPA 54*.

*Available from:

American National Standards Institute, Inc.

1430 Broadway

New York, NY  10018

National Fire Protection Association, Inc.

Batterymarch Park

Quincy, MA  02269

Note: Where listed vented decorative logs are 
required, thermostat models are not permitted.

PRODUCT FEATURES

AIR FOR COMbUSTION AND VENTILATION

UNPACkING

LOCAL CODES

 CAUTION: Do not remove the 

data  plates  from  the  grate  as

-

sembly. The data plates contain 

important  warranty  and  safety 

information.

1.  Remove log 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 protective packaging applied 

to log and heater for shipment.

3.  Check heater for any shipping damage. If 

heater is damaged call DESA Heating, LLC 
at 1-866-672-6040 for replacement parts 
before returning to dealer.

OPERATION

This  heater  is  clean  burning.  It  requires  no 
outside venting. There is no heat loss out a 
vent or up a chimney. Heat is generated by 
realistic, dancing yellow flames. This heater 
is designed for vent-free operation with flue 
damper  closed.  It  has  been  tested  and 
approved  to  ANSI  Z21.11.2  standard  for 
unvented  heaters.  State  and  local  codes 
in  some  areas  prohibit  the  use  of  vent-free 

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 shutoff system. The 
ODS/pilot is a required feature for vent-free 
room  heaters.  The  ODS/pilot  shuts  off  the 
heater if there is not enough fresh air.

 WARNING: This heater shall 

not be installed in a room or space 

unless the required volume of in

-

door combustion air is provided 

by the method described in the 

National  Fuel  Gas  Code,  ANSI 

Z223.1/NFPA 54,

 the 

International 

Fuel Gas Code,

 or applicable lo

-

cal codes. Read the following in

-

structions to insure proper fresh 

air for this and other fuel-burning 

appliances in your home.

Today’s homes are built more energy efficient 
than ever. New materials, increased insulation 
and  new  construction  methods  help  reduce 
heat  loss  in  homes.  Home  owners  weather 
strip and caulk around windows and doors to 
keep the cold air out and the warm air in. Dur-
ing heating months, home owners want their 
homes as airtight as possible.
While it is good to make your home energy 
efficient, your home needs to breathe. Fresh 
air must enter your home. All fuel-burning ap-
pliances need fresh air for proper combustion 
and ventilation.

State  of  Massachusetts:

  The  installa-

tion must be made by a licensed plumber 
or  gas  fitter  in  the  Commonwealth  of 
Massachusetts.
Sellers  of  unvented  propane  or  natural 
gas-fired supplemental room heaters shall 
provide to each purchaser a copy of 527 
CMR 30 upon sale of the unit.
Vent-free  gas  products  are  prohibited  for 
bedroom and bathroom installation in the 
Commonwealth of Massachusetts. 

Summary of Contents for VyS18NC

Page 1: ...o not use 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 Installat...

Page 2: ...vented gas fired heat er It uses air oxygen from the room in which it is installed Provisions for adequate combustion and ventilation air must be provided Refer to Air for Combustion and Ven tilation...

Page 3: ...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 blower i...

Page 4: ...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...

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: ...whose 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 a...

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: ...at resistant sealant Do not seal chimney flue damper Installation WARNING Never install the heater in a bedroom or bathroom un less installed as a vented appli ance see page 11 in a recreational vehic...

Page 9: ...he ceiling should not be less than 42 Figure 4 Minimum Clearance for Combustible to Wall Minimum 16 from Side Wall Example INSTALLATION Continued NOTICE Manual control heaters may be used as a vented...

Page 10: ...nces you must operate heater with chimney flue damper open Go to Install ing Damper Clamp Accessory for Vented Operation page 11 INSTALLATION Continued Mantel Clearances In addition to meeting noncomb...

Page 11: ...ented heater ap pliance must be installed only in a solid fuel burning fireplace with a working flue and constructed of noncombustible material You may use this heater as a vented product There are th...

Page 12: ...ealant 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 regula...

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

Page 14: ...regulator 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 mai...

Page 15: ...ingto the log installation instructions in this manual Flames contact ing log will create soot It is very important to install these logs exactly as instructed Do not modify logs Only use logs supplie...

Page 16: ...in Figure 19 The bottom of the log is marked with a C for center Match square peg on center of rear log with square hole in bottom of center crossover Match round peg on center of front log with round...

Page 17: ...R SAFETY READ BEFORE LIGHTING WARNING If you do not fol low these instructions exactly a fire or explosion may result causing property damage per sonal injury or loss of life A This appliance has a pi...

Page 18: ...30 sec onds after lighting pilot After 30 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 perso...

Page 19: ...own If pilot flame pattern is incorrect as shown in Figure 24 turn heater off see To Turn Off Gas to Ap pliance page 18 see Troubleshooting page 21 Note The pilot flame on natural gas units will have...

Page 20: ...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 25 Injector Holder On Outlet Burner Tube Bu...

Page 21: ...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 to pilot...

Page 22: ...or propane LP gas company 1 Contact local natural or propane LP gas company 2 Clean burner see Cleaning and Maintenance page 19 or replace burner orifice 1 Clean burner see Cleaning and Maintenance pa...

Page 23: ...burner until air is removed from line Have gas line checked by local natural or propane LP gas company 3 Observe minimum instal lation clearances see page 8 4 Clean burner see Cleaning and Maintenance...

Page 24: ...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 19 1 Locate and co...

Page 25: ...Maximum 10 5 W C Minimum 5 W C Shipping Weight 27 lbs For the purpose of input adjustment Service Hints When Gas Pressure Is Too Low pilot will not stay lit burners will have delayed ignition heater...

Page 26: ...www desatech com 124452 01A 26 Parts Variable Manually Controlled VYS18NC VYS18PC VYS24NC AND VYS24PC 15 17 3 17 4 18 Models 17 4 24 Models 3 14 16 11 10 4 2 12 8 5 14 13 7 9 1 15 15 17 5 17 2 17 1...

Page 27: ...1 107186 06 Injector 1 107186 07 Injector 1 107186 08 Injector 1 12 098354 01 Control Knob 1 13 099387 08 Pilot Tube 1 14 M11084 38 HWH AB 8 18 x 0 38 Screw 1 15 M11084 26 HWH AB 10 16 x 0 38 Screw 8...

Page 28: ...446 1446 Fax 616 791 8270 www nbmc com Washer Equipment Co 1715 Main Street Kansas City MO 64108 2195 KS MO AR 816 842 3911 www washerparts com East Coast Energy Products 10 East Route 36 W Long Bran...

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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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