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Desa FAS-3B manual

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Table of contents for the manual

  • Page 1

    F A-3B F AS-3B F A-5B F AS-5B Save this manual for future reference. WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal in- jury, 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. ?[...]

  • Page 2

    2 105566 INFRARED NA TURAL GAS HEA TER 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. If you smell gas • Shut of f gas supply . • Do not try to light any appliance. • Do not touch any electrical switch; do not use any phone in your building. [...]

  • Page 3

    3 105566 OWNER’S MANUAL PRODUCT IDENTIFICA TION LOCAL CODES Install and use heater with care. Follow all local codes. In the absence of local codes, use the latest edition of National Fuel Gas Code ANS Z223.1, also known as NFPA 54*. *Available from: American National Standards Institute, Inc. 1430 Broadway New York, NY 10018 National Fire Protec[...]

  • Page 4

    4 105566 INFRARED NA TURAL GAS HEA TER FRESH AIR FOR COMBUSTION AND VENTILA TION Today’s homes are built more energy effi- cient than ever. New materials, increased insulation, and new construction methods help reduce heat loss in homes. Home owners weather strip and caulk around windows and doors to keep the cold air out and the warm air in. Dur[...]

  • Page 5

    5 105566 OWNER’S MANUAL FRESH AIR FOR COMBUSTION AND VENTILA TION Continued DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION Determining if You Have a Confined or Unconfined Space Use this worksheet to determine if you have a confined or unconfined space. Space: Includes the room in which you will install heater plus any adjoining rooms with doorle[...]

  • Page 6

    6 105566 INFRARED NA TURAL GAS HEA TER Figure 3 - Ventilation Air from Outdoors Ventilation Air From Outdoors Provide extra fresh air by using ventilation grills or ducts. You must provide two per- manent openings: one within 12" of the ceiling and one within 12" of the floor. Connect these items directly to the outdoors or spaces open to[...]

  • Page 7

    7 105566 OWNER’S MANUAL INST ALLA TION NOTICE: A qualified service per- son must install heater. Follow all local codes. CHECK GAS TYPE Use only natural gas. If your gas supply is not natural, do not install heater. Call dealer where you bought heater for proper type heater. INSTALLATION ITEMS Before installing heater, make sure you have the item[...]

  • Page 8

    8 105566 INFRARED NA TURAL GAS HEA TER 17 3 / 8 " 17 1 / 2 " Min. 6 1 / 2 " Min. Adjoining Wall Only Insert Mounting Screws Through Last Hole On Each End Floor 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 16 inches apart from their cen[...]

  • Page 9

    9 105566 OWNER’S MANUAL 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[...]

  • Page 10

    10 105566 INFRARED NA TURAL GAS HEA TER IMPORTANT: Hold pressure regulator with wrench when connecting it to gas pip- ing and/or fittings. Tee Joint Reducer Bushing to 1/8" NPT 1/8" NPT Plug Tap Test Gauge Connection * Sediment Trap Tee Joint Pipe Nipple Cap Manual Shutoff Valve * 3/8" NPT Pipe Nipple Heater Cabinet Figure 13 - Gas C[...]

  • Page 11

    11 105566 OWNER’S MANUAL CHECKING GAS CONNECTIONS Pressure Testing Gas Supply Piping System Test Pressures In Excess Of 1/2 PSIG (3.5 K Pa) 1. Disconnect heater and its individual manual shutof f v alve from gas supply piping system. Pressures in excess of 1/2 PSIG will damage heater regulator . 2. Cap of f open end of gas pipe where manual shuto[...]

  • Page 12

    12 105566 INFRARED NA TURAL GAS HEA TER TO SELECT HEATING LEVEL Slightly press in control knob and turn coun- terclockwise to the LOW, ME- DIUM, or HIGH positions (see Figure 18). IMPORTANT: Release downward pres- sure while turning control knob. Control knob will lock at the desired position. WARNING: When running heater, set control knob at LOW, [...]

  • Page 13

    13 105566 OWNER’S MANUAL OPERA TING HEA TER Continued THERMOSTAT MODELS FAS-3B AND FAS-5B FOR YOUR SAFETY READ BEFORE LIGHTING A. This appliance has a pilot which must be lighted by hand. When lighting the pilot, follo w these instructions exactly . B . BEFORE LIGHTING smell all around the appliance ar ea f or gas. Be sure to smell next to the fl[...]

  • Page 14

    14 105566 INFRARED NA TURAL GAS HEA TER INSPECTING BURNER Check pilot flame pattern and burner flame pattern often. PILOT FLAME PATTERN Figure 22 shows a correct pilot flame pattern. Figure 23 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touch- ing the thermocouple. This will cause the thermocouple to cool. When the ther[...]

  • Page 15

    15 105566 OWNER’S MANUAL TROUBLESHOOTING Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLEM When ignitor button is pressed in, there is no spark at ODS/pilot ODS/pilot lights but flame goes out when control knob is released When ignitor button is pressed in, there is a spark at ODS/pilot but no ignition POSSIBLE CA[...]

  • Page 16

    16 105566 INFRARED NA TURAL GAS HEA TER OBSERVED PROBLEM Burner(s) does not light after ODS/pilot is lit Delayed ignition of burner(s) Burner backfiring during combustion Burner plaque(s) does not glow Slight smoke or odor during initial operation Heater produces a clicking/ticking noise just after burner is lit or shut off White powder residue for[...]

  • Page 17

    17 105566 OWNER’S MANUAL TROUBLESHOOTING Continued WARNING: 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 re[...]

  • Page 18

    18 105566 INFRARED NA TURAL GAS HEA TER TECHNICAL SER VICE You may have further questions about in- stallation, operation, or troubleshooting. If so, contact DESA International’s Techni- cal Service Department at 1-800-323-5190. You can also visit DESA International's Technical Service web site at www.desatech.com. SER VICE PUBLICA TIONS You[...]

  • Page 19

    19 105566 OWNER’S MANUAL FAN KITS - UH1000FB AND UHS1000FB For all models. Provides better heat distri- bution. Makes heater more efficient. Com- plete installation and operating instructions included. Manually controlled - UH1000FB. Includes ON/OFF switch. Thermostatically controlled - UHS1000FB. Includes three settings: ON/OFF/AUTO. ACCESSORIES[...]

  • Page 20

    20 105566 INFRARED NA TURAL GAS HEA TER 28 21 27 27 26 7 2 7 1 22 23 24 25 3 4 (See Detail) ILLUSTRA TED PA R T S BREAKDOWN FA-3B Burner Assembly 11 10 6 18 16 15 14 7 9 7 13 12 8 19 17 5 4 20 20 20 5-1 5-2 ODS/Pilot Assembly[...]

  • Page 21

    21 105566 OWNER’S MANUAL P ARTS LIST FA-3B This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 18 of this manual. KEY PART NO. NO. FA-3B DESCRIPTION QTY. 1 L98409-02 Cabinet Assembly 1 2 L98005-02 Lower Front Panel Assembly 1 3 L98410-02 Deflector Unit 1 4 L[...]

  • Page 22

    22 105566 INFRARED NA TURAL GAS HEA TER ILLUSTRA TED PA R T S BREAKDOWN FA-5B Burner Assembly 33 26 32 32 31 7 2 4 (See Detail) 7 1 27 28 29 30 3 11 10 4 6 7 5 9 7 23 21 25 24 24 24 24 24 22 20 13 12 8 14 18 25 17 19 15 16 TO " B1 " TO " B2 " TO " C1 " TO " C2 " 5-1 5-2 ODS/Pilot Assembly[...]

  • Page 23

    23 105566 OWNER’S MANUAL P ARTS LIST FA-5B This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 18 of this manual. KEY PART NO. NO. FA-5B DESCRIPTION QTY. 1 L98409-01 Cabinet Assembly 1 2 L98005-01 Lower Front Panel Assembly 1 3 L98410-01 Deflector Unit 1 4 L[...]

  • Page 24

    24 105566 INFRARED NA TURAL GAS HEA TER ILLUSTRA TED PA R T S BREAKDOWN FAS-3B Burner Assembly 15 16 13 19 23 22 11 9 12 21 16 14 10 4 23 20 17 18 16 16 29 2 29 28 24 25 1 26 27 16 30 16 13 7 8 9 17 24 4 (See Detail) 3 5 6 14-1 14-2 ODS/Pilot Assembly[...]

  • Page 25

    25 105566 OWNER’S MANUAL P ARTS LIST FAS-3B This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 18 of this manual. KEY PART NO. NO. FAS-3B DESCRIPTION QTY. 1 L98409-04 Cabinet Assembly 1 2 L98006-02 Front Panel Assembly 1 3 L98410-04 Reflector Unit 1 4 L9810[...]

  • Page 26

    26 105566 INFRARED NA TURAL GAS HEA TER ILLUSTRA TED PA R T S BREAKDOWN FAS-5B Burner Assembly 12 11 4 15 16 14 13 16 26 24 28 25 21 28 27 27 27 27 27 22 18 17 19 10 20 23 9 TO " B1 " TO " B2 " TO " C1 " TO " C2 " 16 16 34 2 34 33 29 30 1 31 32 16 35 16 13 7 8 9 17 29 4 (See Detail) 3 5 6 14-1 14-2 ODS/Pilot [...]

  • Page 27

    27 105566 OWNER’S MANUAL P ARTS LIST FAS-5B This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 18 of this manual. KEY PART NO. NO. FAS-5B DESCRIPTION QTY. 1 L98409-03 Cabinet Assembly 1 2 L98006-01 Front Panel Assembly 1 3 L98410-03 Reflector Unit 1 4 L9810[...]

  • Page 28

    KEEP THIS WARRANTY W ARRANTY INFORMA TION Always specify model and serial numbers when communicating with the factory. We reserve the right to amend these specifications at any time without notice. The only warranty applicable is our standard written warranty. We make no other warranty, expressed or implied. Model Serial No. Date Purchased LIMITED [...]