Instruction/ maintenance manual of the product FAS-5B Desa
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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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 .
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.
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 .
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.
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/pilo.
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 glo.
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.
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.
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.
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.
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.
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 .
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.
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 2.
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.
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 &qu.
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.
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.
An important point after buying a device Desa FAS-5B (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Desa FAS-5B yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Desa FAS-5B - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Desa FAS-5B you will learn all the available features of the product, as well as information on its operation. The information that you get Desa FAS-5B will certainly help you make a decision on the purchase.
If you already are a holder of Desa FAS-5B, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Desa FAS-5B.
However, one of the most important roles played by the user manual is to help in solving problems with Desa FAS-5B. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Desa FAS-5B along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
