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www.desatech.com

113061-01F

sAFeTY INFoRMATIoN

WARNING:  Improper  in

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stallation,  adjustment,  al

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teration, service or mainte-

nance can cause injury or 
property damage. Refer to 

this manual for correct in-

stallation  and  operational 
procedures.  For  assis

-

tance  or  additional  infor-

mation consult a qualified 
installer, service agency or 
the gas supplier.

WARNING:  This  is  an 

unvented gas-fired heater. 
It uses air (oxygen) from the 
room in which it is installed. 
Provisions  for  adequate 
combustion  and  ventila

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tion air must be provided. 

Refer to 

Air for Combustion 

and Ventilation 

section on 

page 5 of this manual.

This appliance is only for 
use  with  the  type  of  gas 
indicated  on  the  rating 
plate.  This  appliance  is 
not  convertible  for  use 
with other gases.

This appliance may be in

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stalled in an aftermarket,* 

permanently  located, 
manufactured  (mobile) 
home, where not prohib

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ited by local codes.

* Aftermarket: Completion of sale, not for 
purpose of resale, from the manufacturer 

 WARNING: This product con

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tains and/or generates chemicals 

known to the State of California 

to cause cancer or birth defects 

or other reproductive harm.

IMPORTANT: Read this owner’s 

manual carefully and completely 

before  trying  to  assemble, 

operate  or  service  this  heater. 

Improper use of this heater can 

cause  serious  injury  or  death 

from  burns,  fire,  explosion, 

electrical  shock  and  carbon 

monoxide poisoning.

 DANGER: Carbon monoxide 

poisoning may lead to death!

Carbon Monoxide Poisoning:

 

Early signs of carbon 

monoxide poisoning resemble the flu, with head

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aches, dizziness or nausea. If you have these signs, 

the heater may not be working properly. 

Get fresh 

air at once! 

Have heater serviced. Some people 

are more affected by carbon monoxide than others. 

These include pregnant women, people with heart 

or lung disease or anemia, those under the influ

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ence of alcohol and those at high altitudes.

TABle oF CoNTeNTs

Safety Information ............................................... 
Local Codes......................................................... 4
Product Identification ........................................... 4
Unpacking............................................................ 4
Product Features ................................................. 4
Air For Combustion and Ventilation ..................... 5
Installation ........................................................... 7
Operating Heater ............................................... 14
Inspecting Heater .............................................. 15
Cleaning and Maintenance ................................ 16

Troubleshooting ................................................. 17
Specifications .................................................... 1
Service Hints ..................................................... 1
Technical Service............................................... 1
Service Publications .......................................... 1
Replacement Parts ............................................ 1
Accessories ....................................................... 1
Illustrated Parts Breakdown and Parts List........ 
Warranty Information ...........................Back Cover

Summary of Contents for VP20BTA

Page 1: ...appliance Do not touch any electrical switch do not use any phone in your building Immediatelycallyourgassupplierfromaneighbor s phone Follow the gas supplier s instructions If you cannot reach your g...

Page 2: ...cause cancer or birth defects or other reproductive harm IMPORTANT Read this owner s manualcarefullyandcompletely before trying to assemble operate or service this heater Improper use of this heater c...

Page 3: ...ther gases 2 Do not place propane LP supply tank s in side any structure Locate propane LP supply tank s outdoors propane LP models only 3 If you smell gas shut off gas supply do not try to light any...

Page 4: ...purchaser a copy of 527 CMR 30 upon sale of the unit Vent free gas products are prohibited for bed room and bathroom installation in the Com monwealth of Massachusetts Unpacking 1 Remove heater from c...

Page 5: ...ir that leaks around doors and windows may provide enough fresh air for combustion and ventilation However in buildings of unusually tight construction you must provide additional fresh air Unusually...

Page 6: ...es Di rect vent draws combustion air from the outdoors and vents to the outdoors Example Gas water heater _______________Btu Hr Vent free heater ______________Btu Hr Total ______________Btu Hr 40 000...

Page 7: ...heater Follow all local codes CHECK GAS TYPE Use only the correct type of gas natural or pro pane LP If your gas supply is not the correct gas type do not install heater Call dealer where you bought...

Page 8: ...bedroom or bathroom in a recreational vehicle where curtains furniture clothing or other flammable objects are less than 36 from the front top or sides of the heater as a fireplace insert in high traf...

Page 9: ...on each end of mounting bracket to attach bracket to wall These two holes are 14 apart from their centers Attach mounting bracket to wall in one of two ways 1 Attaching to wall stud 2 Attaching to wal...

Page 10: ...r flush to wall 4 For thin walls 1 2 or less insert red key into wall anchor Push red key to pop open anchor wings see Figure 10 IMPORTANT Do not hammer key For thick walls over 1 2 thick or solid wal...

Page 11: ...er with base 3 For carpeted floors make a small cut with a sharp knife at marked locations prior to drill ing If mounting base to a wood floor drill 1 8 diameter hole 3 4 deep Do not use anchors in wo...

Page 12: ...inants This keeps them from going into heater controls If sediment trap is not installed or is installed wrong heater may not run properly Figure 14 External Regulator With Vent Pointing Down External...

Page 13: ...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 3 Check all joints from gas meter for n...

Page 14: ...OR YOUR 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 ha...

Page 15: ...t you determine your own comfort levels MANUAL LIGHTING PROCEDURE 1 Remove front panel see Figure 4 page 8 2 Follow steps 1 through 7 under Lighting Instructions page 14 3 With control knob pressed in...

Page 16: ...nd pilot assembly clean and free of dust and dirt To clean these parts we recommend using compressed air no greater than 30 PSI Your local computer store hardware store or home center may carry compre...

Page 17: ...in gas lines when in stalled 5 Depleted gas supply pro pane LP gas only 6 ODS pilot is clogged 7 Gas regulator setting is not correct OBSERVED PROBLEM When ignitor button is pressed there is no spark...

Page 18: ...ntrol knob is released Burner does not light after ODS pilot is lit Delayed ignition of burner Burner backfiring during combustion REMEDY 1 Press in control knob fully 2 AfterODS pilotlights keepcon t...

Page 19: ...s or furniture Heater produces a clicking tick ing noise just after burner is lit or shut off Heater shuts off in use ODS operates REMEDY 1 Check burner for dirt and debris If found clean burner see C...

Page 20: ...see Checking Gas Connec tions page 12 1 Locate and correct all leaks see Checking Gas Connec tions page 12 2 Replace control valve 1 Take apart gas tubing and remove foreign matter 2 Locate and corre...

Page 21: ...tion and operating instructions included Thermostatically controlled blower turns itself on and off as required Specifications VN20BTA 10 000 20 000 Btu hr Variable Natural Gas Electronic Ignition Pre...

Page 22: ...0 10 11 12 13 14 16 18 19 4 7 1 15 17 20 Illustrated Parts Breakdown Models VN20BTA VP20BTA VN30BTA VP30BTA AA Battery Positive UP AAA Battery Negative UP Install Battery According To This Illustratio...

Page 23: ...7894 14 Deflector Assembly 1 107894 15 Deflector Assembly 1 9 098271 11 Ignitor Cable 1 10 098249 01 Nut M5 2 11 110803 01 ODS Pilot Assembly 1 110803 02 ODS Pilot Assembly 1 12 103446 02 Burner 1 103...

Page 24: ...ginal condition because of normal wear and tear or parts that fail or become damaged as a result of misuse accidents lack of proper maintenance or defects caused by improper installation Travel diagno...

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