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107297

INFRARED PROPANE/LP GAS HEATER

1.

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.

2.

Do not place propane/LP supply tank(s)
inside any structure. Locate propane/
LP supply tank(s) outdoors.

3.

If you smell gas
• Shut off gas supply.
• 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 instructions.

• If you cannot reach your gas supplier,

call the fire department

SAFETY
INFORMATION

Carbon Monoxide Poisoning:

 Early signs

of carbon monoxide poisoning resemble the
flu, with headaches, 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, persons
with heart or lung disease or anemia, those
under the influence of alcohol, and those at
high altitudes.

Propane/LP Gas:

 Propane/LP gas is odor-

less. An odor-making agent is added to
propane/LP gas. The odor helps you detect
a propane/LP leak. However, the odor added
to propane/LP gas can fade. Propane/LP gas
may be present even though no odor exists.

Make certain you read and understand all
warnings. Keep this manual for reference. It
is your guide to safe and proper operation of
this heater.

IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble, oper-
ate, or service this heater. Im-
proper use of this heater can cause
serious injury or death from burns,
fire, explosion, electrical shock,
and carbon monoxide poisoning.

4.

This heater shall not be installed in a
bedroom or bathroom.

5.

Always run non-thermostat heater with
plaque control knob in a locked posi-
tion. Never set control knob between
locked positions. Poor combustion and
higher levels of carbon monoxide may
result.

6.

This heater needs fresh, outside air ven-
tilation to run properly. This heater has
an Oxygen Depletion Sensing (ODS)
safety shutoff system. The ODS shuts
down the heater if not enough fresh air
is available. See Fresh Air for Combus-
tion and Ventilation,
 pages 4 through 6.

7.

Keep all air openings in front and bot-
tom of heater clear and free of debris.
This will insure enough air for proper
combustion.

8.

If heater shuts off, do not relight until
you provide fresh, outside air. If heater
keeps shutting off, have it serviced.

9.

Do not run heater
• where flammable liquids or vapors

are used or stored

• under dusty conditions

10. Before using furniture polish, wax, car-

pet cleaner, or similar products, turn
heater off. If heated, the vapors from
these products may create a white pow-
der residue within burner box or on
adjacent walls or furniture.

11. Do not use heater if any part has been

under water. Immediately call a quali-
fied service technician to inspect the
room heater and to replace any part of
the control system and any gas control
which has been under water.

12. Turn off and unplug heater and let cool

before servicing. Only a qualified service
person should service and repair heater.

13. Operating heater above elevations of

4,500 feet could cause pilot outage.

14. To prevent performance problems, do

not use propane/LP fuel tank of less
than 100 lbs. capacity.

 WARNINGS

 DANGER: Carbon monoxide

poisoning may lead to death!

 WARNING: Any change to this

heater or its controls can be
dangerous.

Do not place clothing or other
flammable material on or near
the appliance. Never place any
objects on the heater.

Surface of heater becomes very
hot when running heater. Keep
children and adults away from
hot surface to avoid burns or
clothing ignition. Heater will re-
main hot for a time after shut-
down. Allow surface to cool be-
fore touching.

Carefully supervise young chil-
dren when they are in the same
room with heater.

Make sure grill guard is in place
before running heater.

Keep the appliance area clear and
free from combustible materials,
gasoline, and other flammable
vapors and liquids.

Due to high temperatures, the
appliance should be located out
of traffic and away from furniture
and draperies.

Summary of Contents for FBS-3B

Page 1: ...ed by a qualified installer service agency or the gas supplier Aftermarket Completion of sale not for purpose of resale from the manufacturer WARNING This is an unvented gas fired heater It uses air o...

Page 2: ...ir ven tilation to run properly This heater has an Oxygen Depletion Sensing ODS safety shutoff system The ODS shuts down the heater if not enough fresh air is available See Fresh Air for Combus tion a...

Page 3: ...safety shutoff system The ODS pilot is a required feature for vent free room heaters The ODS pilot shuts off the heater if there is not enough fresh air PIEZO IGNITION SYSTEM This heater has a piezo i...

Page 4: ...rating of one perm 6 x 10 11 kg per pa sec m2 or less with open ings gasketed or sealed and b weather stripping has been added on openable windows and doors and c caulking or sealants are applied to...

Page 5: ...Do not include direct vent gas appliances Direct vent draws combustion air from the outdoors and vents to the outdoors 4 Compare the maximum Btu Hr the space can support with the actual amount of Btu...

Page 6: ...ce To Crawl Space To Attic FRESH AIR FOR COMBUSTION AND VENTILATION Continued Or Remove Door into Adjoining Room Option 3 Ventilation Grills Into Adjoining Room Option 2 12 12 Ventilation Grills into...

Page 7: ...ing heater in rooms without enough ventilationairmaycausemildewtoformfrom too much moisture See Fresh Air for Com bustion and Ventilation pages 4 through 6 Continued CAUTION If you install the heater...

Page 8: ...WARNING Maintainminimum clearances shown in Figure 8 If you can provide greater clear ancesfromfloorandjoiningwall INSTALLING HEATER TO WALL Mounting Bracket The mounting bracket is located on back p...

Page 9: ...ocations 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 Tigh...

Page 10: ...ts This keeps them from going into heater controls If sediment trap is not installed or is installed wrong heater may not run properly IMPORTANT Hold pressure regulator with wrench when connecting it...

Page 11: ...gas joints Bubbles forming show a leak 5 Correct all leaks at once 6 Light heater see Operating Heater column 3 and page 12 for non thermo stat models pages 13 and 14 for ther mostat models Check the...

Page 12: ...qualified service person or supplier for repairs 6 Release downward pressure on con trol knob and turn clockwise to OFF position 7 Press in control knob and turn back to PILOT IGN This will cause the...

Page 13: ...OFF ON PILOT IGN 1 7 3 5 4 6 2 Figure 23 Burner Patterns Temperature Control Setting Knob Knob FBS 3C FBS 5C ON OFF 3 Pushincontrolknobslightlyandturn clockwise to the OFF posi tion Be sure that the...

Page 14: ...Turn Off Gas to Ap pliance page 12 for non thermostat mod els or page 13 for thermostat models see Troubleshooting pages 15 through 17 Figure 25 Incorrect Pilot Flame Pattern GRH OV 009 GOOD PILOT Fi...

Page 15: ...ally clogged ODS pilot 6 Thermocouple damaged 7 Control valve damaged REMEDY 1 Replace ignitor 2 Replace ignitor 3 Reconnect ignitor cable 4 Free ignitor cable if pinched by any metal or tubing Keep i...

Page 16: ...r replace burner orifice s 2 Replace burner 3 Replace gas regulator 1 Replace burner 2 Contact local propane LP gas company 3 Turn control knob until it locks at de sired setting 1 Problem will stop a...

Page 17: ...OBLEM Heater produces unwanted odors Heater shuts off in use ODS operates Gas odor even when control knob is in OFF position Gas odor during combustion Moisture condensationnoticedonwindows REMEDY 1 V...

Page 18: ...n 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 Fax 616 791 8270 www nbmc co...

Page 19: ...omthe address listed on the back page of this manual Send a check for 5 00 payable to DESA International SERVICE HINTS When Gas Pressure is Too Low pilot will not stay lit burner s will have delayed i...

Page 20: ...97 INFRARED PROPANE LP GAS HEATER 26 19 25 25 24 7 2 7 1 20 21 22 23 3 4 See Detail ILLUSTRATED PARTS BREAKDOWN FB 3B Burner Assembly 11 10 6 16 7 9 14 7 13 12 8 17 15 5 4 18 18 18 5 1 5 2 ODS Pilot A...

Page 21: ...98411 01 Ignitor Line 1 10 L98028 01 Control Valve Bracket 1 11 L98054 01 Control Valve Fixed Nut 1 12 L98059 01 Control Valve Main Inlet Nut 1 13 L98115 02 Main Inlet Tube Assembly 1 14 L98123 02 ODS...

Page 22: ...HEATER ILLUSTRATED PARTS BREAKDOWN FB 5B Burner Assembly 31 24 30 30 29 7 2 4 See Detail 7 1 25 26 27 28 3 11 10 4 6 7 5 9 7 21 19 23 22 22 22 22 22 20 18 13 14 12 8 14 16 23 15 17 TO B1 TO B2 TO C1...

Page 23: ...1 12 L98059 01 Control Valve Main Inlet Nut 1 13 L98115 01 Main Inlet Tube Assembly 1 14 L98123 01 ODS Gas Line Assembly 1 15 L98116 01 Burner Gas Line Assembly C 1 16 L98117 01 Burner Gas Line Assem...

Page 24: ...PROPANE LP GAS HEATER ILLUSTRATED PARTS BREAKDOWN FBS 3C Burner Assembly 15 16 13 17 21 20 11 9 12 19 16 14 10 4 21 18 16 16 27 2 27 26 22 23 1 24 25 16 8 16 13 7 9 17 22 4 See Detail 3 5 6 14 1 14 2...

Page 25: ...tor Bracket 1 12 L98057 01 4 Way Connector Fixed Nut 1 13 L98411 01 Ignitor Line 1 14 L98071 04 ODS Pilot 1 14 1 098514 01 Thermocouple 1 14 2 L98071 07 Ignitor Electrode 1 15 L98072 01 ODS Mounting B...

Page 26: ...USTRATED PARTS BREAKDOWN FBS 5B Burner Assembly 12 11 4 15 16 14 13 16 24 22 26 23 19 26 25 25 25 25 25 20 17 10 18 21 9 TO B1 TO B2 TO C1 TO C2 16 16 32 2 32 31 27 28 1 29 30 16 8 16 13 7 9 17 27 4 S...

Page 27: ...Assembly 1 14 1 098514 01 Thermocouple 1 14 2 L98071 07 Ignitor Electrode 1 15 L98072 01 ODS Mounting Bracket 1 16 L98817 01 Self Tapping Screw 14 17 L98123 03 ODS Gas Line Assembly 1 18 L98116 02 Bu...

Page 28: ...shed with the unit This warranty does not apply to parts that are not in original condition because of normal wear and tear or parts that fail or become damaged as a result of misuse accidents lack of...

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