Instruction/ maintenance manual of the product GMS8 33-3/8 GAS FURNACE UNITS Goodman Mfg
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RT6621031r2 November 2013 This manual is to be used by qualified, professionally trained HV AC technicians only . Goodman does not assume any responsibility for property damage or personal injury due to improper service procedures performed by an unqualified person.
PRODUCT IDENTIFICA TION 2 The model and manufacturing number are used for positive identification of component parts used in manufacturing. Please use these numbers when requesting service or parts information. WA RNI N G WARNING HIGH VOLTAGE! Disconnect ALL power before servicing or installing this unit.
3 PRODUCT IDENTIFICA TION The model and manufacturing number are used for positive identification of component parts used in manufacturing. Please use these numbers when requesting service or parts information.
4 PRODUCT DESIGN NFPA 54/ANSI Z223.1 - latest edition. In Canada, the fur- naces must be vented in accordance with the National Stan- dard of Canada, CAN/CSA B149.1 and CAN/CSA B149.2 - latest editions and amendments. NOTE: The vertical height of the Category I venting system must be at least as great as the horizontal length of the venting system.
5 COMPONENT IDENTIFICA TION Upflow/Horizontal 1 Tubular Heat Exchanger 2 Pressure Switch 3 Flue Pipe Connection 4 Induced Draft Blower 5 Gas Line Entrance 6 Gas Valve 7 Rollout Limit 8 Junction Box ? .
PRODUCT DIMENSIONS 6 GMS8 A lt. Ga s Inlet H i g h Vol t ag e In le t L o w V oltage A lt. Ga s Inlet A lt. High V o lt ag e Alt. LowV oltage MOD E L A B G M S 8 04 03 A ** * G M S 8 06 03 A ** * G M .
7 PRODUCT DIMENSIONS GMS8[040-100]BB GMS81205D*BA GMS81405DNCC For installations in Canada, the GMS furnaces are certifed only to 4,500 ft. * Negative pressure readings are in inches of water column (*w.c.) Mo d el T r i p P o in t ID Blo w e r P ress u re Sw i tch ID Blo w e r P ress u re Sw i tch Pa rt # G M S 804 03A * B B - 0.
8 PRODUCT DESIGN Thermost ats: Filters: Filters are required with this furnace and must be provided by the installer. The filters used must comply with UL900 or CAN/ULCS111 standards. Installing this furnace without filters will void the unit warranty Upflow Filters Cabi net Wi d t h (i n.
FURNACE SPECIFICA TIONS 9 1. These furnaces are manufactured for natural gas operation. Optional Kits are available for conversion to propane gas operation. 2. For elevations above 2000 ft. the rating should be reduced by 4% for each 1000 ft. above sea level.
BLOWER PERFORMANCE SPECIFICA TIONS 10 NOTES: • CFM in chart is without filter(s). Filters do not ship with this furnace, but must be provided by the installer. • All furnaces ship as hig-speed cooling. Installer must adjust blower cooling speed as needed.
11 BLOWER PERFORMANCE SPECIFICA TIONS 30 40 50 60 70 80 90 1 10 120 100 130 140 150 100 90 80 70 60 50 40 30 20 10 OU T P UT B T U / HR x 10 00 BTU OUTPUT v s TEMPERA TURE RISE CHAR T TE M PE R A TU R E R ISE 600 CF M 700 900 1000 1 100 1200 1400 1600 1800 2000 2200 24 00 CF M F O RMULAS BTU OUTPUT = CFM x 1.
12 WIRING DIAGRAMS Wiring is subject to change, always refer to the wiring diagram on the unit for the most up-to-date wiring. HIGH VOL T A GE! DISCONNECT AL L POWE R BEFORE SERVICI NG OR INS T ALLIN G THIS UNIT . M UL TIPL E POWER SO URCES MA Y BE P RESENT .
13 SCHEMA TICS HIGH VOL T A GE! DISCONNECT AL L POWE R BEFORE SERVICI NG OR INS T ALLIN G THIS UNIT . M UL TIPL E POWER SO URCES MA Y BE P RESENT . F AI LURE T O DO SO MA Y CAUS E PROPERTY DAMAG E, PERSONAL INJURY OR DEA TH. TYPICAL SCHEMATIC GMS8 * MODEL FURNACES WR 50T55-289 INTEGRATED IGNITION CONTROL This schematic is for reference only.
An important point after buying a device Goodman Mfg GMS8 33-3/8 GAS FURNACE UNITS (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Goodman Mfg GMS8 33-3/8 GAS FURNACE UNITS 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 Goodman Mfg GMS8 33-3/8 GAS FURNACE UNITS - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Goodman Mfg GMS8 33-3/8 GAS FURNACE UNITS you will learn all the available features of the product, as well as information on its operation. The information that you get Goodman Mfg GMS8 33-3/8 GAS FURNACE UNITS will certainly help you make a decision on the purchase.
If you already are a holder of Goodman Mfg GMS8 33-3/8 GAS FURNACE UNITS, 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 Goodman Mfg GMS8 33-3/8 GAS FURNACE UNITS.
However, one of the most important roles played by the user manual is to help in solving problems with Goodman Mfg GMS8 33-3/8 GAS FURNACE UNITS. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Goodman Mfg GMS8 33-3/8 GAS FURNACE UNITS 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