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9

107882-01M

INSTALLING HEATER TO WALL

Mounting Bracket

Locate mounting bracket in heater carton. Remove 

mounting bracket from heater carton.

Figure 6 - Mounting Bracket

INSTALLATION

Continued

Removing Front Panel Of Heater

1.  Remove the four painted screws, two on each 

side of front panel.

2.  Pull bottom of front panel forward, then out.
3.  Remove any remaining packaging materials. 

Figure 7 - Removing Front Panel Of Heater

Screw

Front Panel

Marking Screw Locations

1.  Tape mounting bracket to wall where heater 

will be located. Make sure mounting bracket 

is level.

  WARNING:  Maintain  mini-

mum  clearances  shown  in 

Figure  8.  If  you  can,  provide 

greater  clearances  from  floor 

and joining wall.

2.  Mark screw locations on wall (see Figure 8).

 

Note:

 

Only mark last hole on each end of 

mounting  bracket.  Insert  mounting  screws 

through these holes only.

3.  Remove tape and mounting bracket from wall.

30,000 Btu/hr Models

18 

3

/

4

"

(47.6 cm)

Min.

16"

(40.6 cm)

Min.

14" (35.6 cm)

18 

3

/

4

"

(47.6 cm)

Min.

12"

(30.4

cm)

Min.

A

dj

oi

ni

ng

 W

al

l

14" (35.6 cm)

A

dj

oi

ni

ng

 W

al

l

Only Insert Mounting 

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.

A

dj

oi

ni

ng

 W

al

l

A

dj

oi

ni

ng

 W

al

l

Only Insert Mounting 

Screws Through Last 

Hole On Each End

Only Insert Mounting 

Screws Through Last 

Hole On Each End

Floor

Floor

14" (35.6 cm)

14" (35.6 cm)

18 

3

/

4

"

(47.6 cm)

Min.

18 

3

/

4

"

(47.6 cm)

Min.

12"

(30.4

cm)

Min.

20,000 Btu/hr Models

Methods For Attaching Mounting Bracket 
To Wall

Only use last hole on each end of mounting bracket 

to attach bracket to wall. These two holes are 14" 

(35.6 cm) apart from their centers. Attach mount-

ing bracket to wall in one of two ways:
1.  Attaching to wall stud
2.  Attaching to wall anchor

Attaching to Wall Stud: 

This method provides the 

strongest hold. Insert mounting screws through 

mounting bracket and into wall studs.

Attaching to Wall Anchor: 

This method allows you 

to attach mounting bracket to hollow walls (wall 

areas between studs) or to solid walls (concrete 

or masonry).
Decide  which  method  better  suits  your  needs. 

Either method will provide a secure hold for the 

mounting bracket.

Attaching Mounting Bracket To Wall

Note:

 

Wall anchors, mounting screws and spacers 

are in hardware package. The hardware package 

is provided with 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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