background image

www.desatech.com

107882-01M

14

6.  Turn control knob counterclockwise 

 

to  the  PILOT  position.  Press  in  control 

knob for five (5) seconds.

7.  With control knob pressed in, push down 

and release ignitor button. This will light 

pilot. The pilot is attached to the front of 

burner. 

Note:

 

You may be running this 

heater for the first time after hooking up to 

gas supply. If so, you may need to press in 

control knob for 30 seconds or more. This 

will allow air to bleed from the gas system. 

If needed, keep pressing ignitor button until 

pilot lights. If ignitor does not light pilot, 

refer to 

Troubleshooting

, page 18 or contact 

a qualified service person or gas supplier for 

repairs. Until repairs are made, light pilot 

with match. To light pilot with match, see 

Manual Lighting Procedure

, page 15.

8.  Keep control knob pressed in for 30 seconds 

after lighting pilot. After 30 seconds, release 

control knob.

• If control knob does not pop up when 

released, contact a qualified service person 

or gas supplier for repairs.

 

Note:

 If pilot goes out, repeat steps 4 thru 7. 

Thermostat models have a safety interlock 

system. Wait one (1) minute before lighting 

pilot again.

9.  Turn control knob counterclockwise 

 

to desired heating level. The main burner 
should light.

 CAUTION: Do not try to ad-

just heating levels by using the 
equipment shutoff valve.

Figure 20 - Pilot

Ignitor 
Electrode

Pilot 
Burner

Thermocouple

OPERATING HEATER

FOR 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 has a pilot which must be 

lighted by hand. When lighting the pilot, 

follow these instructions exactly.

B.  BEFORE LIGHTING smell all around the 

appliance area for gas. Be sure to smell next 

to the floor because some gas is heavier than 

air and will settle on the floor.

 

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electric switch; do not 

use any phone in your building.

• Immediately call your gas supplier from 

a  neighborʼs  phone.  Follow  the  gas 

supplierʼs instructions.

• If you cannot reach your gas supplier, call 

the fire department.

C.  Use only your hand to push in or turn the 

gas control knob. Never use tools. If the 

knob  will  not  push  in  or  turn  by  hand, 

donʼt try to repair it, call a qualified service 

technician. Force or attempted repair may 

result in a fire or explosion.

D.  Do not use this appliance if any part has 

been  under  water.  Immediately  call  a 

qualified service technician to inspect the 

appliance and to replace any part of the 

control system and any gas control which 

has been under water.

LIGHTING 

INSTRUCTIONS

1.  STOP! Read the safety information above.

2.  Make sure equipment shutoff valve is fully 

open.

3.  Turn off any electric power to the appliance 

if service is to be performed.

4.  Turn control knob clockwise 

 to the 

OFF position.

5.  Wait five minutes to clear out any gas. Then 

smell for gas, including near the floor. If you 

smell gas, STOP! Follow “B” in the safety 

information above. If you donʼt smell gas, 

go to the next step.

Figure 19 - Control Knob In The OFF 

Position

OF

F  

  P

ILO

Control 
Knob

Ignitor 
Button

Summary of Contents for CBN20T

Page 1: ...WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use any phone in your building Immediatelycallyourgassupplierfromaneighbor s phone Follow the g...

Page 2: ...This appliance is not convert ible for use with other gases Aftermarket Completion of sale not for purpose of resale from the manufacturer State of Massachusetts The installation must be made by a li...

Page 3: ...s heater WARNING Any change to this heater or its controls can be dangerous WARNING Do not use a blower insert heat exchanger insertorotheraccessorynotap proved for use with this heater Due to high te...

Page 4: ...vapors from these products may create a white powder residue within burner box or on adjacent walls or furniture 14 Provide adequate clearances around air openings LOCAL CODES Installanduseheaterwithc...

Page 5: ...air 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: ...space can support _________ Btu Hr actual amount of Btu Hr used Example 51 200 Btu Hr maximum the space can support 60 000 Btu Hr actual amount of Btu Hr used AIR FOR COMBUSTION AND VENTILATION Conti...

Page 7: ...ntended for use as supplemental heat Use this heater along with your primary heating system Do not install this heater as your pri mary heat source If you have a centralheatingsystem youmay run system...

Page 8: ...r bathroom in a recreational vehicle where curtains furniture clothing or other ammable objectsarelessthan36inches 91 5 cm from the front top or sides of the heater as a replace insert in high traf c...

Page 9: ...ng Screws Through Last Hole On Each End Only Insert Mounting Screws Through Last Hole On Each End Floor Floor Figure 8 Mounting Bracket Clearances 8 20 3 cm Min Adjoining Wall Adjoining Wall Only Inse...

Page 10: ...ION Continued Figure 9 Folding Anchor Figure 10 Popping Open Anchor Wings For Thin Walls Figure 11 Mounting Heater Onto Mounting Bracket Mounting Bracket attached to wall Horizontal Slots Stand Out Ta...

Page 11: ...pres sure heater regulator damage could occur Install the external regulator with the vent pointing down as shown in Figure 14 page 12 Pointing the vent down protects it from freezing rain or sleet M...

Page 12: ...er 4 W C to 10 5 W C Pressure Propane LP From External Regulator 11 W C to 14 W C Pressure Ground Joint Union Tee Joint Reducer Bushing to 1 8 NPT 1 8 NPT Plug Tap CAUTION Use only new black iron or s...

Page 13: ...supply Check reconnected t tings for leaks TestPressuresEqualToorLessThan1 2PSIG 3 5 kPa 1 Close equipment shutoff valve see Figure 16 2 Pressurize supply piping system by either opening propane LP s...

Page 14: ...ons exactly a re or explosion may result 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 instru...

Page 15: ...e PILOT position THERMOSTAT CONTROL OPERATION The thermostatic control used on these models differs from standard thermostats Standard thermostats simply turn on and off the burner The thermostat used...

Page 16: ...ater inspected yearly by a quali ed service person Heater may need more frequent clean ing due to excessive lint from carpeting bedding material pet hair etc WARNING Failure to keep the primary air op...

Page 17: ...ilot Assembly Pilot Air Inlet CLEANING AND MAINTENANCE Continued CABINET Air Passageways Use a vacuum cleaner or pressurized air to clean Exterior Use a soft cloth dampened with a mild soap and water...

Page 18: ...gas lines when installed 5 Depleted gas supply propane LP gas 6 ODS pilot is clogged 7 Gas regulator setting is not correct REMEDY 1 Replace pilot assembly 2 Replace pilot assembly 3 Reconnect ignito...

Page 19: ...pilotlights keepcon trol knob pressed in 30 seconds 3 Fully open equipment shutoff valve 4 Hand tighten until snug then tighten 1 4 turn more 5 A Contact local natural or propane LP gas company B Cle...

Page 20: ...isiscommonwithmostheat ers Ifnoiseisexcessive contact quali ed service person 1 Turn control knob to the low est position and let warm up for a minute 2 Operate burner until air is removed from line H...

Page 21: ...e 2 Low fuel supply propane LP gas 3 Gas leak See Warning statement at top of page 1 Gas leak See Warning statement at top of page 2 Control valve defective 1 Foreign matter between con trol valve and...

Page 22: ...t 21 9 lb 9 9 kg Average Shipping Weight 25 4 lb 11 5 kg CBT20PT Propane LP Gas 10 000 20 000 Btu Hr Variable Electronic Ignition Pressure Regulator Setting 8 W C Inlet Gas Pressure in of water Maximu...

Page 23: ...number of your heater the replacement part number SERVICE PUBLICATIONS Youcanpurchaseaservicemanualfromtheaddress listed on the back page of this manual Send a check for 5 00 payable to DESA Heating P...

Page 24: ...KDOWN MODELS CBN20T CBP20T CBN30T CBP30T CBT20NT CBT20PT CBT30NT AND CBT30PT AA Battery Positive UP AAA Battery Negative UP 2 9 10 11 12 13 14 16 18 19 4 15 3 5 6 8 20 9 1 1 7 17 21 Install battery ac...

Page 25: ...t 2 11 110803 01 ODS Pilot Assembly 1 110803 02 ODS Pilot Assembly 1 12 103446 02 Burner 1 103447 06 Burner 1 13 099387 03 3 16 Pilot Tubing 1 14 103845 05 Injector 1 103845 06 Injector 1 103845 07 In...

Page 26: ...OFF VALVE GA5010 For all models Equipment shutoff valve with 1 8 NPT tap FAN KITS GA3250T For all models Provides better heat distribution Makes heater more ef cient Complete installation and operatin...

Page 27: ...s Street Bowling Green KY 42103 3414 270 846 1199 1 800 654 8534 Fax 1 800 846 0090 franktalk aol com Master Parts Dist 1251 Mound Ave NW Grand Rapids MI 49504 2672 616 791 0505 1 800 446 1446 www nbm...

Page 28: ...s of this product and or DESAHeating Products who will provide original factory replacement parts Failure to use original factory replacement parts voids this warranty The heater MUST be installed by...

Reviews: