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CANADIAN GAS ASSOCIATION
58TMA
Downflow/Horizontal 2-Speed, 2-Stage,
Induced-Combustion Gas Furnace
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Installation, Start-Up, and Operating Instructions
Sizes 065-125, Series 111
NOTE: Read the entire instruction manual before starting the
installation.
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ama
Index Page
SAFETY CONSIDERATIONS.....................................................1
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
®
APPROVED
PROCEDURE..............
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1 28 ⁄ ″ 2 VENT CONNECTION 1 ⁄ ″ DIA 2 20″ 2″ D THERMOSTAT 3 4 ⁄ ″ 16 13 13 ⁄ ″ WIRE ENTRY ⁄ ″ 16 16 INLET 7 ⁄ ″ DIA 8 ACCESSORY 15 2 ⁄ ″ 16 7 ⁄ ″ DIA HOLE 8 POWER ENTRY 7 39 ⁄ ″ 8 1 1 ⁄ ″ DIA 2 R.H. GAS ENTRY 7 ⁄ ″ DIA 1 8 9 ⁄ ″ 8 ACCESSORY 1 16 ⁄ ″ 16 1″ TYP 7 3 ⁄ ″ DIA 1 ⁄ ″ DIA HOLE 8 4 1 10 ⁄ ″ 4 ACCESSORY GAS ENTRY 1 1 ⁄ ″ OUTLET 16 5 11 13 ⁄ ″ ⁄ ″ 16 16 E 1 5 2 ⁄ ″ 8 ⁄ ″ TYP 8 1 10 ⁄ ″ 4 1 19″ 8 ⁄ ″ 11 4 A 1 ⁄ ″ 16 1 ⁄ ″ 16 11 ⁄ ″ 16 1 2 ⁄ ″ 8 7 AIRFLOW NOTE: ADDITIONAL ⁄ ″ DIA
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MINIMUM INCHES CLEARANCE TO COMBUSTIBLE CONSTRUCTION This forced air furnace is equipped for use with natural gas at Clearance arrows do not change with furnace orientation. altitudes 0-10,000 ft (0-3,050m). An accessory kit, supplied by the manufacturer,shall be used to 1" convert to propane gas use or may be required for some natural gas applications. This furnace is for indoor installation in a building constructed on site. This furnace may be installed on combustible flooring in alcove or 0"
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HAZARDOUS LOCATIONS When furnace is installed in a residential garage, it must be Improper installation, adjustment, alteration, service, mainte- installed so that burners and ignition source are at least 18 in. nance, or use can cause carbon monoxide poisoning, explo- above floor. The furnace should be protected from physical sion, fire, electrical shock, or other conditions which may damage by vehicles. cause personal injury, loss of life, or property damage. When furnace is installed in publi
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DUCTS TO OUTDOORS 1 SQ IN. PER 4000 BTUH * VENT THROUGH ROOF (CATEGORY I) 12″ MAX D 12″ 1 SQ IN. MAX RETURN VENT PER 2000 A AIR THROUGH F BTUH RETURN * ROOF 12″ MAX AIR (CATEGORY I) 1 SQ IN. PER 4000 1 SQ IN. BTUH PER 1000 * DUCTS BTUH IN DOOR * TO OR WALL OUTDOORS INTERIOR OUTSIDE UNCONFINED HEATED 1 SQ IN. SPACE SPACE PER 4000 6″ MIN BTUH * † (FRONT) 1 SQ IN. 1 SQ IN. G E PER 2000 B PER 1000 12″ BTUH * BTUH IN DOOR * MAX C 12″ MAX OR WALL 12″ MAX 12″ MAX SUP
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Table 2—Free Area Of Combustion Air Opening AIR UNCONFINED OUTDOOR AIR THROUGH OUTDOOR AIR THROUGH OUTDOOR AIR THROUGH 58TMA SPACE FROM VERTICAL DUCTS HORIZONTAL DUCTS SINGLE DUCT FURNACE HIGH-FIRE Free Area Free Area of Round Free Area of Round Free Area of Round INPUT of Opening Opening and Duct Pipe Opening and Duct Pipe Opening and Duct Pipe (BTUH) (Sq In.) (Sq In.) (In. Dia) (Sq In.) (In. Dia) (Sq In.) (In. Dia) 63,000 100 15.8 5 31.5 7 21.0 6 84,000 100 21.0 6 42.0 8 28.0 6 105,000 105 26.
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FURNACE (OR COIL CASING FURNACE WHEN USED) CD5 OR CK5 COIL ASSEMBLY OR KCAKC COIL BOX COMBUSTIBLE COMBUSTIBLE FLOORING FLOORING DOWNFLOW SUBBASE SHEET METAL SHEET METAL PLENUM PLENUM FLOOR FLOOR OPENING OPENING A96285 A96284 Fig. 6—Furnace, Plenum, and Subbase Installed on Fig. 7—Furnace, Plenum, and Coil Assembly or Coil Combustible Floor Box Installed on Combustible Floor 2. Whencompleted,downflowsubbase,plenum,andfurnace(or 10.) The furnace can be suspended from each corner by hanger coil cas
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LINE CONTACT ONLY PERMISSIBLE BETWEEN LINES FORMED BY INTERSECTIONS OF THE TOP AND TWO SIDES OF THE FURNACE JACKET AND BUILDING JOISTS, STUDS, OR FRAMING. GAS TYPE-B ENTRY VENT 30-IN. MIN WORK AREA 24″ SHEET METAL 24″ MANUAL SHUTOFF GAS VALVE SEDIMENT TRAP A97516 Fig. 8—Typical Attic Installation 3 ⁄8-IN. ROD ANGLE IRON OR EQUIVALENT (B) (A) (B) (A) (B) (A) ROD LOCATION USING DIMPLE (A) (B) LOCATORS 3 (SEE DIMENSIONAL /8-IN. HEX NUT DWG FOR & WASHER (4) LOCATIONS) REQD PER ROD
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AIRFLOW INSTALLATION POSITION OF FILTERS RETURN-AIR PLENUM A95235 → Fig. 10—Horizontal Installation on Blocks AIRFLOW 12″ D 4″ ACCESS DOOR FIELD-SUPPLIED FILTER RETAINERS A82173 A88486 Fig. 12—Downflow Filter Arrangement Fig. 11—Horizontal Filter Arrangement Table 4—Filter Retainer (In.) Table 5—Maximum Capacity of Pipe* FURNACE CASING WIDTH FILTERS D NOMINAL INTERNAL LENGTH OF PIPE (FT) 14-3/16 (2) 14 X 20 X 1 14-3/8 IRON PIPE D
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NOTE: Proper polarity must be maintained for 115-v wiring. If polarity is incorrect, the furnace control status LED will flash rapidly and prevent heating operation. → The cabinet must have an uninterrupted or unbroken ground according to NEC ANSI/NFPA 70-1996 and Canadian Elec- GAS trical Code CSA C22.1 or local codes to minimize personal SUPPLY injury if an electrical fault should occur. This may consist of electricalwireorconduitapprovedforelectricalgroundwhen installed in accordance with ex
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Table 6—Electrical Data OPERATING VOLTS— MAX MIN MAX WIRE MAX FUSE OR UNIT VOLTAGE RANGE HERTZ— UNIT WIRE LENGTH HACR-TYPE SIZE PHASE AMPS GAGE FT‡ CKT BKR AMPS† Max* Min* 065-08 115—60—1 127 104 8.0 14 46 15 065-12 115—60—1 127 104 10.5 14 35 15 085-12 115—60—1 127 104 12.0 14 30 15 085-16 115—60—1 127 104 14.2 14 26 15 105-16 115-60-1 127 104 13.2 14 29 15 105-20 115—60—1 127 104 17.2 12 33 20 125-20 115—60—1 127 104 17.9 12 32 20 * Permissible limits of the voltage range at which the unit wil
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FIELD 24-V WIRING FIELD 115-, 208/230-, 460-V WIRING FACTORY 24-V WIRING FACTORY 115-V WIRING 2-STAGE THERMOSTAT TERMINALS SEVEN W2 W1 Y2 R G Y1 C FIELD-SUPPLIED WIRE FUSED DISCONNECT THREE-WIRE 208/230- OR HEATING- 460-V ONLY THREE PHASE W2 BLK BLK COM WHT WHT W/W1 208/230-V SINGLE GND C Y/Y2 PHASE 115-V FUSED JUNCTION Y1 DISCONNECT BOX R Y2 GND SWITCH CONTROL 2-SPEED G (WHEN REQUIRED) BOX CONDENSING UNIT 24-V TERMI
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13 TO 115VAC FIELD DISCONNECT SWITCH CONNECTION DIAGRAM SCHEMATIC DIAGRAM (NATURAL GAS & PROPANE) NOTE #8 LS FRS2 LPS ILK NOTE #1 RED HI EQUIPMENT GROUND GRY HPS BRN P BHI / LOR LO-GAS-HEAT L2 BRN LO GV LGPS MED LO BLWM BHT / CLR DSS HI-GAS-HEAT C BLU M NOTE #15 L1 GRN BLWR MED HI SPARE GRN IDM COM SPARE MED HI FRS1 HI-COOL HSI NOTE #4 BRN BRN FUSED DISCONNECT (WHEN USED) GRN ALS1 COMMON SWITCH (WHEN REQ’D) ILK JB NOTE #1 CAP HSIR EAC-1 EAC-2 L1 BLK (WHEN USED) HEAT 1 PL6 WHT L2 WHT FU2 3 NOTE #
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Thefurnacestartsupineitherlow-orhigh-gasheat.Iffurnace inducer motor IDM provides sufficient pressure to close starts up in low-gas heat, control CPU determines low-gas high-heat pressure switch HPS, high-heat gas valve sole- heat on time (from 0 to 16 minutes) which is permitted before noid GV is energized. Blower motor BLWM switches switching to high-gas heat. speed for high-gas heat 5 sec after control CPU switches from low-gas heat to high-gas heat. If power is interrupted, stored history is
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(1.) The thermostat closes R to G-and-Y circuits. The NOTE: An accessory interface kit is required with single-speed R-Y circuit starts outdoor unit, and R to G-and-Y heat pumps. See interface kit Installation Instructions for single- circuits start furnace blower motor BLWM on high- speed heat pump thermostat and interface connections. No inter- cool speed. face kit is needed for 2-speed heat pumps. See 2-speed heat pump Installation Instructions for thermostat connections. (2.) The EAC termina
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BLWM operation at heat pump heating speed until end of In the U.S.A., input rating for altitudes above 2000 ft must be prepurge period, then shuts off until end of HSI ignitor on reduced by 4 percent for each 1000 ft above sea level. period (22 sec). In Canada, input rating must be derated by 10 percent for b. When installed with a heat pump, furnace control CPU altitudes of 2000 ft to 4500 ft above sea level. automatically holds blower off time to 22 sec during HSI Furnace input rate must be wi
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EXAMPLE: 85,000 Btuh input furnace installed at 4300 ft. Furnace Input Derate Furnace Input Rate Rate at X Multiplier = at Installation Sea Level Factor Altitude 85,000 X 0.82 = 69,700 CANADA At installation altitudes from 2000 to 4500 ft, this furnace must be derated 10 percent by an authorized Gas Conver- BURNER sion Station or Dealer. To determine correct input rate for ORIFICE altitude, see example above and use 0.82 as derate multi- plier factor. b. Check that gas valve adjustment caps are
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Table 10—Model 58TMA Orifice Size and Manifold Pressure for Correct Input (Tabulated Data Based on 21,000 Btuh High Heat/13,500 Btuh Low Heat per Burner, Derated 4% for Each 1000 Ft Above Sea Level)* SPECIFIC GRAVITY OF NATURAL GAS AVG GAS ALTITUDE 0.58 0.60 0.62 0.64 0.66 HEAT VALUE RANGE Manifold Manifold Manifold Manifold Manifold AT ALTITUDE Orifice Orifice Orifice Orifice Orifice (FT) Pressure Pressure Pressure Pressure Pressure (BTU/CU FT) No. No. No. No. No. High/Low High/Low High/Low Hig
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Table 10—Model 58TMA Orifice Size and Manifold Pressure for Correct Input—Continued (TABULATED DATA BASED ON 21,000 BTUH HIGH HEAT/13,500 BTUH LOW HEAT PER BURNER, DERATED 4% FOR EACH 1000 FT ABOVE SEA LEVEL)* SPECIFIC GRAVITY OF NATURAL GAS AVG GAS ALTITUDE 0.58 0.60 0.62 0.64 0.66 HEAT VALUE RANGE Manifold Manifold Manifold Manifold Manifold AT ALTITUDE Orifice Orifice Orifice Orifice Orifice (FT) Pressure Pressure Pressure Pressure Pressure (BTU/CU FT) No. No. No. No. No. High/Low High/Low Hi
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Table 10—Model 58TMA Orifice Size and Manifold Pressure for Correct Input—Continued (TABULATED DATA BASED ON 21,000 BTUH HIGH HEAT/13,500 BTUH LOW HEAT PER BURNER, DERATED 4% FOR EACH 1000 FT ABOVE SEA LEVEL)* SPECIFIC GRAVITY OF NATURAL GAS AVG GAS ALTITUDE 0.58 0.60 0.62 0.64 0.66 HEAT VALUE RANGE Manifold Manifold Manifold Manifold Manifold AT ALTITUDE Orifice Orifice Orifice Orifice Orifice (FT) Pressure Pressure Pressure Pressure Pressure (BTU/CU FT) No. No. No. No. No. High/Low High/Low Hi
