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107882-01M

10

Side View

Front View

Attaching To Wall Stud Method

For attaching mounting bracket to wall studs
1.  Drill holes at marked locations using 9/64" 

drill bit.

2.  Place mounting bracket onto wall. Line up last 

hole on each end of bracket with holes drilled 

in wall.

3.  Insert mounting screws through bracket and 

into wall studs.

4.  Tighten  screws  until  mounting  bracket  is 

firmly fastened to wall studs.

Attaching To Wall Anchor Method

For attaching mounting bracket to hollow walls 

(wall areas between studs) or solid walls (concrete 

or masonry)
1.  Drill holes at marked locations using 5/16" 

drill bit. For solid walls (concrete or masonry), 

drill at least 1" (2.5 cm) deep.

2.  Fold wall anchor as shown in Figure 9.
3.  Insert wall anchor (wings first) into hole. Tap 

anchor flush to wall.

4.  For thin walls [1/2" (1.3 cm) or less], insert red 

key into wall anchor. Push red key to “pop” open 

anchor wings. 

IMPORTANT:

 

Do not hammer 

key! For thick walls [over 1/2" (1.3 cm) thick] 

or solid walls, do not pop open wings.

5.  Place mounting bracket onto wall. Line up 

last hole on each end of bracket with wall 

anchors.

6.  Insert mounting screws through bracket and 

into wall anchors.

7.  Tighten  screws  until  mounting  bracket  is 

firmly fastened to wall.

INSTALLATION

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 Tab

Placing Heater On Mounting Bracket

1.  Locate two horizontal slots on back panel of 

heater.

2.  Place  heater  onto  mounting  bracket.  Slide 

horizontal slots onto stand-out tabs on mount-

ing bracket.

Installing Bottom Mounting Screws

1.  Locate two bottom mounting holes. These 

holes are near bottom on back panel of heater 

(see Figure 12).

2.  Mark screw locations on wall.
3.  Remove heater from mounting bracket.
4.  If  installing  bottom  mounting  screws  into 

hollow  or  solid  wall,  install  wall  anchors. 

Follow steps 1 through 4 under 

Attaching To 

Wall Anchor Method

.

 

If installing bottom mounting screw into wall 

stud, drill holes at marked locations using 9/64" 

drill bit.

5.  Replace heater onto mounting bracket.
6.  Place spacers between bottom mounting holes 

and wall anchor or drilled hole.

7.  Hold spacer in place with one hand. With other 

hand, insert mounting screw through bottom 

mounting hole and spacer. Place tip of screw 

in opening of wall anchor or drilled hole.

8.  Tighten  both  screws  until  heater  is  firmly 

secured to wall. Do not over tighten.

 

Note:

 

Do not replace front panel at this time. 

Replace front panel after making gas connec-

tions and checking for leaks (see page 11).

Figure 12 - Installing Bottom Mounting 

Screws

Wall

Spacer

Heater

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...

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