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TECHNICAL MANU TECHNICAL MANU TECHNICAL MANU TECHNICAL MANU AL TECHNICAL MANU AMH8 33-3/8" 80% Gas Furnace ™ 80% AFUE, Twin Comfort Multi-Speed, Upflow/Horizontal • Refer to Service Manual RS6612007 for troubleshooting information. • All safety information must be followed as provided in the Service Manual. •...
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PRODUCT IDENTIFICATION 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. AMH80403A*A* AMH80403A*B* AMH80603A*A* AMH80603A*B* AMH80604B*A* AMH80604B*B* AMH80803B*A* AMH80803B*B* AMH80804B*A* AMH80804B*B* AMH80805C*A* AMH80805C*B* AMH81005C*A* AMH81005C*B* AMH81205D*A*...
PRODUCT DESIGN General Operation WARNING The AMH8 furnaces are equipped with an electronic ignition device used to light the burners and an induced draft blower to exhaust combustion products. O PREVENT POSSIBLE PERSONAL INJURY OR DEATH DUE TO ASPHYXIATION, THIS FURNACE MUST BE ATEGORY VENTED.
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PRODUCT DESIGN Accessibility Clearances (Minimum) High Altitude Derate Unobstructed front clearance of 24" for servicing is rec- IMPORTANT NOTE: The furnace as shipped requires no ommended. change to run between 0 - 4500 feet. Do not attempt to increase the firing rate by changing orifices or increasing the manifold pressure below 4500 feet.
PRODUCT DIMENSIONS AMH8 Alt. Gas Inlet Alt. Gas Inlet Alt. High Voltage High Voltage Inlet Low Voltage Alt. LowVoltage MODELS AMH80403A*** 12-1/2 AMH80603A*** AMH80604B*** AMH80803B*** 17-1/2 AMH80804B*** AMH80805C*** 19-1/2 AMH81005C*** AMH81205D*** 24-1/2 All dimensions are in inches.
PRODUCT DESIGN AMH8***A* PRESSURE SWITCH TRIP POINTS AN D USAGE CH ART TRIP POINT ID B LOWER ID BLOWER PRESSURE MODEL PR ESSUR E SWITC H SWITCH PART # -0.70 B1370158 AMH80403A*A* -0.70 B1370158 AMH80603A*A* AMH80604B *A* -0.75 B1370179 -0.75 B1370179 AMH80803B *A* AMH80804B *A*...
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PRODUCT DESIGN AMH8***B* PRESSURE SWITCH TRIP POINTS AN D USAGE CH ART TRIP POINT ID B LOWER ID BLOWER PRESSURE MODEL PR ESSUR E SWITC H SWITCH PART # -0.80 0130F00042 AMH80403A*B* AMH80603A*B* -0.80 0130F00042 AMH80604B *B* -0.90 0130F00041 -0.80 0130F00042 AMH80803B *B* AMH80804B *B*...
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AMH8 furnaces, in either upflow or horizontal applica- tions. These coils are available in both cased and uncased models (with the option of a field installed TXV expansion device). These 80% furnaces match up with the existing Amana ®...
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PRODUCT DESIGN Thermostats: It is recommended that a single-stage heat, non-power robbing thermostat be used. Refer to the product marketing literature for a complete list of thermostats offered. 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.
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PRODUCT DESIGN TwinComfort™ Configuration & Operation TwinComfort™ This furnace is capable of the following heating modes: • Single Stage (Factory Setting) • Modified Two-Stage > Fixed 5-Min. Low Stage > Auto Time (1-12 Min.) Low Stage To change from the factor single-stage operation, adjust the dipswitches on the ignition control as follows: HEAT OFF SECOND...
BLOWER PERFORMANCE SPECIFICATIONS AMH8***A* (CFM & Temperature Rise vs. External Static Pressure) EXTERNAL STATIC PRESSURE (Inches Water Column) Ton s AC Model Motor at 0.5" Speed CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM HIGH 1521 1466 1414...
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BLOWER PERFORMANCE SPECIFICATIONS AMH8***B* (CFM & Temperature Rise vs. External Static Pressure) EXTERNAL STATIC PRESSURE (Inches Water Column) Ton s AC Model Motor at 0.5" Speed CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM HIGH 1521 ---- 1466...
WIRING DIAGRAMS AMH8_ WARNING:DISCONNECT POWER BEFORE HUMIDIFIER INTEGRATED CONTROL MODULE SERVICING.WIRING TO UNIT MUST BE PROPERLY POLARIZED AND GROUNDED. XFMR (6) GND (8) 24 VAC HUMIDIFIER MVC (9) VALVE MVH (12) MVL (2) ID BLOWER PRESSURE AUXILIARY SWITCH LIMIT CONTROLS PS (10) AUTO 5 MIN...
WIRING DIAGRAM HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. CIRCULATOR BLOWER ELECTRONIC INDUCER AIR CLEANER HEAT PARK HEAT COOL ROLLOUT SWITCH...