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UNVENTED (VENT-FREE)
BLUE FLAME GAS HEATER

SAFETY INFORMATION AND
INSTALLATION MANUAL

For more information, visit www.desatech.com

For more information, visit www.desatech.com

WARNING: If the information in this manual is not
followed exactly, a fire or explosion may result caus-
ing property damage, personal injury, or loss of life.

— Do not store or use gasoline or other flammable

vapors and liquids in the vicinity of this or any
other appliance.

— 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.

• Immediately call your gas supplier from a

neighbor’s phone. Follow the gas supplier’s in-
structions.

• If you cannot reach your gas supplier, call the fire

department.

— Installation and service must be performed by a

qualified installer, service agency, or the gas
supplier.

WARNING: Improper installation,
adjustment, alteration, service, or
maintenance can cause injury or
property damage. Refer to this
manual for correct installation and
operational procedures. For as-
sistance or additional information
consult a qualified installer, ser-
vice agency, or the gas supplier.

WARNING: This is an unvented
gas-fired heater. It uses air (oxy-
gen) from the room in which it
is installed. Provisions for ad-
equate combustion and venti-
lation air must be provided.
Refer to Air for Combustion and
Ventilation section on page 4 of
this manual.

This appliance may be installed in an aftermarket*, permanently located, manufactured
(mobile) home, where not prohibited by local codes.
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.

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

Save this manual for future reference.

Save this manual for future reference.

CBN20, CBP20

SBN20, SBP20

CBN20T, CBP20T
CBN30T, CBP30T

CBT20NT, CBT20PT
CBT30NT, CBT30PT

CBN20TK, CBP20TK

Summary of Contents for CBN20, CBP20, SBN20, SBP20, CB

Page 1: ...G Improperinstallation adjustment alteration service or maintenance can cause injury or property damage Refer to this manualforcorrectinstallationand operational procedures For as sistanceoradditional...

Page 2: ...r use with other gases 2 Do not place propane LP supply tank s inside any structure Locate propane LP supply tank s outdoors propane LP mod els only WARNING Do not use any accessory not ap proved for...

Page 3: ...0 Turn off and let cool before servicing Only a qualified service person should service and repair heater 11 Operating heater above elevations of 4 500 feet could cause pilot outage 12 To prevent perf...

Page 4: ...ction un lessprovisionsareprovidedforadequatecombustion and ventilation air Read the following instructions to insure proper fresh air for this and other fuel burning appliances in your home Unusually...

Page 5: ...stion air from the outdoors and vents to the outdoors Example Gas water heater _____________ Btu Hr Vent free heater _____________ Btu Hr Total _____________ Btu Hr WARNING If the area in which the he...

Page 6: ...rs Provide extra fresh air by using ventilation grills or ducts You must provide two permanent openings one within 12 of the ceiling and one within 12 of the floor Connect these items directly to the...

Page 7: ...sene lamps etc in the air exist may discolor walls or cause odors WARNING Never install the heater in a bedroom or bathroom in a recreational vehicle where curtains furniture clothing or other flam ma...

Page 8: ...g hole as shown in Figure 5 Mounting hole is located on lower left edge on back of heater Make sure the thermostat sensing bulb is pointing up Methods For Attaching Mounting Bracket To Wall Only use l...

Page 9: ...screws until mounting bracket is firmly fastened to wall studs Figure 9 Folding Anchor Figure 10 Popping Open Anchor Wings For Thin Walls Figure 11 Mounting Heater Onto Mounting Bracket Mounting Brac...

Page 10: ...or drill with 1 4 inch diam eter concrete drill bit 13 8 inches into floor Insert anchors com pletely into holes 4 Reposition heater with base feet over holes Secure base to floor with wood screws See...

Page 11: ...e is too small undue loss of volume will occur Install sediment trap in supply line as shown in Figure 15 Locate sediment trap where it is within reach for cleaning Locate sediment trap where trapped...

Page 12: ...f valve to gas supply Check reconnected fittings for leaks Test Pressures Equal To or Less Than 1 2 PSIG 3 5 kPa 1 Close equipment shutoff valve see Figure 16 2 Pressurize supply piping system by eith...

Page 13: ...or gas including near the floor If you smell gas STOP Fol low B in the safety information above If you don t smell gas go to the next step 5 Turn control knob counterclockwise to the PILOT position Pr...

Page 14: ...the set temperature The control knob can be set to any heat level between HI and LO Selecting the HI setting will cause the burner to remain fully on without modulating down in most cases Note The the...

Page 15: ...ice person We also recommend that you keep the burner tube and pilot assembly clean and free of dust and dirt To clean these parts we recommendusingcompressedairnogreaterthan30PSI Yourlocal computer s...

Page 16: ...10 000 20 000 15 000 30 000 Type Gas Natural Only Natural Only Natural Only Natural Only Ignition Piezo Piezo Electronic Electronic Pressure Regulator Setting 3 W C 3 W C 3 W C 3 W C Inlet Gas Pressur...

Page 17: ...ally clogged ODS pilot 7 Thermocouple damaged 8 Control valve damaged REMEDY 1 Replace pilot assembly 2 Replace pilot assembly 3 Reconnect ignitor cable 4 Free ignitor cable if pinched by any metal or...

Page 18: ...ator 3 Clean burner see Cleaning and Main tenance page 15 1 Problem will stop after a few hours of operation 1 Turn control knob to LO position and let warm up for a minute 2 Operate burner until air...

Page 19: ...SERVED PROBLEM Heater produces a clicking ticking noise just after burner is lit or shut off Heater produces unwanted odors Heater shuts off in use ODS operates Gas odor even when control knob is in O...

Page 20: ...desatech com For more information visit www desatech com 20 ILLUSTRATED PARTS BREAKDOWN MODELS CBN20 CBP20 SBN20 SBP20 ILLUSTRATED PARTS BREAKDOWN Models CBN20 CBP20 SBN20 and SBP20 2 3 5 6 8 9 9 10...

Page 21: ...94 08 Deflector Assembly 1 9 098271 09 098271 09 Ignitor Cable 1 10 098249 01 098249 01 ODS Pilot Nut 2 11 110803 01 110803 02 ODS Pilot Assembly 1 110186 01 110186 01 Thermocouple Kit 1 12 103446 01...

Page 22: ...more information visit www desatech com 22 ILLUSTRATED PARTS BREAKDOWN MODELS CBN20T CBP20T CBN30T CBP30T CBN20TK CBP20TK ILLUSTRATED PARTS BREAKDOWN Models CBN20T CBP20T CBN30T CBP30T CBN20TK and CB...

Page 23: ...98271 09 098271 09 098271 09 098271 09 Ignitor Cable 1 10 098249 01 098249 01 098249 01 098249 01 ODS Pilot Nut 2 11 110803 01 110803 02 110803 01 110803 02 ODS Pilot Assembly 1 110186 01 110186 01 11...

Page 24: ...EAKDOWN MODELS CBT20NT CBT20PT CBT30NT CBT30PT ILLUSTRATED PARTS BREAKDOWN Models CBT20NT CBT20PT CBT30NT and CBT30PT 20 2 12 13 7 15 3 5 6 8 9 4 1 17 19 14 18 16 9 10 11 Alkaline Battery AA Battery P...

Page 25: ...11 098271 11 098271 11 098271 11 Ignitor Cable 1 10 098249 01 098249 01 098249 01 098249 01 ODS Pilot Nut 2 11 110803 01 110803 02 110803 01 110803 02 ODS Pilot Assembly 1 110186 01 110186 01 110186 0...

Page 26: ...nal factory replacement parts voids this warranty The heater MUST be installed by a qualified installer in accordance with all local codes and instructions furnished with the unit This warranty does n...

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