AMV9/ACV9 TWO-STAGE VARIABLE SPEED GAS-FIRED WARM AIR FURNACE INSTALLATION INSTRUCTIONS Installer: Affix all manuals adjacent to the unit. (Type FSP CATEGORY IV Direct or Non Direct Vent Air Furnace) These furnaces comply with requirements embodied in the American National Standard / National Standard of Canada ANSI Z21.47·CSA-2.3 Gas Fired Central Furnaces. ® C US RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.
Table of Contents I. Component Identification ............................................................................................................................................... 5 II. Safety .............................................................................................................................................................................. 6 ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS .........................................................................................
Table of Contents XIV. Startup Procedure & Adjustment ............................................................................................................................. 28 HEAT ANTICIPATOR SETTING ................................................................................................................................ 28 DRAIN TRAP PRIMING .......................................................................................................................................
TO THE OWNER WARNING It is important that you fill out the owner’s registration card and mail it today. This will assist us in contacting you should any service or warranty information change in the future. When filling in the registration card, be sure to include the model, manufacturing, and serial numbers, plus the installation date. Your warranty certificate is also supplied with the unit. Read the warranty carefully and note what is covered.
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II. SAFETY If you come in contact with an ungrounded object, repeat step 2 before touching control or wires. 4. Discharge your body to ground before removing a new control from its container. Follow steps 1 through 3 if installing the control on a furnace. Return any old or new controls to their containers before touching any ungrounded object. Please adhere to the following warnings and cautions when installing, adjusting, altering, servicing, or operating the furnace.
• • IV ATI ON REQUIREMENTS & CO NSID ERA TI ONS IV.. LOC LOCA TIO CONSID NSIDERA ERATI TIO NOTE: Do not connect the temporary duct directly to the furnace. The duct must be sized according to the instructions under Section V, Combustion and Ventilation Air Requirements, Section 5.3.3. The furnace heat exchanger, components, duct system, air filters and evaporator coils are thoroughly cleaned following final construction clean up.
• • • • construction, the clearance between the door and door frame is usually adequate to satisfy this ventilation requirement. halogen type refrigerants cleaning solutions (such as perchloroethylene) printing inks paint removers varnishes hydrochloric acid cements and glues antistatic fabric softeners for clothes dryers and masonry acid washing materials Seal off a non-direct vent furnace if it is installed near an area frequently contaminated by any of the above substances.
ANSI Z223.1 (Section 5.3), or CSA B149 Installation Codes (Sections 7.2, 7.3, or 7.4), or applicable provisions of the local building codes for determining the combustion air requirements for the appliances. Most homes will require outside air be supplied to the furnace area by means of ventilation grilles or ducts connecting directly to the outdoors or spaces open to the outdoors such as attics or crawl spaces.
per hour of the total input rating of all gas utilization equipment in the confined space, but not less than 100 square inches. One opening shall be within 12 inches of the top and one within 12 inches of the bottom of the enclosure. Chimney or Gas Vent Ventilation louvers (each end o f attic) NOTE: The inlet and outlet air openings must each have a free area of not less than one square inch per 4000 BTU of the total input rating of all equipment in the enclosure.
5. When directly communicating with the outdoors, the single opening shall have a minimum free area of 1 square inch per 3,000 BTU per hour of total input rating of all equipment in the enclosure. FURNACE MUST BE LEVEL FROM END TO END ALTERNATE VENT/FLUE AND COMBUSTION AIR FURNACE MUST BE LEVEL INTAKE LOCATIONS OR SLIGHTLY TILTED FORWARD WITH THE DOORS 0" - 3/4" BELOW THE BACK PANEL 5.3.4 Specially Engineered Installations: The requirements of 5.3.
AIR DISCHARGE ALTERNATE FLUE AND COMBUSTION AIR PIPE LOCATIONS Side Return Duct Connection Side Return Duct Connection Bottom Return Duct Connection High altitude installations may require both a pressure switch and an orifice change. These changes are necessary to compensate for the natural reduction in the density of both the gas fuel and the combustion air at higher altitude. For installations above 7000 feet, please refer to your distributor for required kit(s).
located in this section for specific details on termination construction. • All terminations (flue and/or intake) must be located at least 12 inches above ground level or the anticipated snow level. • Vent terminations (non-direct and direct vent) must terminate at least 3 feet above any forced air inlet located within 10 feet. NOTE: This provision does not apply to the combustion air intake termination of a direct vent application.
NOTE: Standard and alternate locations can be combined (i.e., an installation may use the standard combustion air intake location but use the alternate vent/flue location or vice versa), if needed. STANDARD FURNACE CONNECTIONS It is the responsibility of the installer to ensure that the piping connections to the furnace are secure, airtight, and adequately supported.
coupling to the cabinet using the screws removed in step 1 or with field-supplied 3/8” #8 self drilling screws. WARNING THE RUBBER ELBOW IS NOT DESIGNED TO SUPPORAT A LOAD. WHEN THE RUBBER ELBOW IS MOUNTED EXTERNALLY TO THE FURNACE CABINET, EXTREME CARE MUST BE TAKEN TO ADEQUATELY SUPPORT FIELD-SUPPLIED VENT/FLUE PIPING, AS DAMAGE CAN RESULT IN LEAKS CAUSING BODILY INJURY OR DEATH DUE TO EXPOSURE TO FLUE GASES, INCLUDING CARBON MONOXIDE. 7. Upflow and Counterflow units.
1 REMOVE 4 SCREWS 2 REMOVE 2 REMOVE AND CUT 1 3 REMOVE REMOVE 3 SCREWS AND 3 RELOCATE ADDITIONAL PLUG FROM DRAIN KIT UPFLOW 1 REMOVE 4 SCREWS UPFLOW Non-Direct Vent (Single Pipe) (1)(2) Maximum Allowable Length of Vent/Flue Pipe (ft) 5 2" CLEARANCE REQUIRED (NON-DIRECT VENT) (4) Unit Input 45,000 70,000 90,000 115,000 3.
90º MEDIUM RADIUS ELBOWS If the combustion air intake pipe is to be installed above a finished ceiling or other area where dripping of condensate will be objectionable, insulation of the combustion air pipe may be required. Use 1/2” thick closed cell foam insulation such as Armaflex™ or Insultube™ where required. UPFLOW 12" MIN.
Horizontal terminations should be as shown in the following figure. Refer to Section IX, Vent/Flue Pipe and Combustion Pipe Termination Location for location restrictions. A 2 3/8 inch diameter wall penetration is required for 2” diameter pipe while a 3 1/2 inch diameter hole is required for 3” diameter pipe.
accordance with all local codes and the instructions in the following sections. RIGHT SIDE PANEL RUBBER ELBOW Follow the bullets listed below when installing the drain system. Refer to the following sections for specific details concerning furnace drain trap installation and drain hose hook ups. • The drain trap supplied with the furnace must be used. • The drain line between furnace and drain location must be constructed of 3/4” PVC or CPVC.
“right-side only” drain hoses to be connected as follows. Refer to Section IX, Vent/Flue Pipe and Combustion Air Pipe for details on alternate vent/flue pipe connection. 1. Remove the rubber plug from the front cover right-side drain port. Save for use in step 3. 2. Secure Hose A to front cover drain port with a red hose clamp. Route hose to rear right side panel grommet hole. 3. Remove grommet from front right-side panel drain hole. Seal hole in grommet with large end of plug.
CAUTION INDUCED DRAFT BLOWER DRAIN PORT LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING CONTROLS. WIRING ERRORS CAN CAUSE IMPROPER AND DANGEROUS OPERATION. VERIFY PROPER OPERATION AFTER SERVICING. HOSE B FRONT COVER PRESSURE TAP HOSE A WIRING HARNESS GREEN HOSE CLAMPS (3 PLACES) LEFT SIDE PANEL TUBE(S) 2 FRONT COVER DRAIN PORT DRAIN TRAP RED HOSE CLAMP SIDE PANEL GROMMET HOLES 115 VOLT LINE CONNECTIONS Horizontal Connections - Left Side Down (Upflow Shown, Counterflow Similar) 4.
W2 Y ( W1 W2 ) * * * * ALTERNATE JUNCTION BOX LOCATION * * * STANDARD JUNCTION BOX LOCATION W1 T h e rm o sta t T w o -S ta g e H e a ting w ith S in g le -S ta g e C o o lin g * * O Y YLO B /C G R G R D E HU M T W IN F u rn a c e In te g ra te d C o n tro l M o d u le NEU Y Junction Box Relocation D e h u m id ista t [O p tio na l] HOT C R e m o te C o nd e ns in g U n it (S in g le -S ta g e C o o lin g ) T w o -S ta ge H e a tin g w ith S in g le -S ta g e C o o lin g W
0 YL0 Y B/C G R W1 W2 W1 W2 DS3 R85 W14 R84 R22 DS4 DS5 CUT FOR DEHUM R128 R W3 G R191 B/C DS7 Y DEHUMIDIFICATION LED (YELLOW) TP2 YL0 12 CIRCUIT CONNECTOR DEHUMIDIFICATION JUMPER WIRE (CUT TO ENABLE) R122 CR35 FOSSIL FUEL APPLICATIONS This furnace can be used in conjunction with a heat pump in a fossil fuel application.
Inlet gas supply pressures must be maintained within the ranges specified below. The supply pressure must be constant and available with all other household gas fired appliances operating. The minimum gas supply pressure must be maintained to prevent unreliable ignition. The maximum must not be exceeded to prevent unit overfiring. Natural Gas Propane Gas down periods. GAS PIPING CONNECTIONS GENERAL CAUTION Inlet Gas Supply Pressure Minimum:5.0" W.C. Maximum :10.0" W.C. Minimum:11.0" W.C. Maximum :13.
shipped from the factory. Maximum torque for the gas valve connection is 375 in-lbs; excessive over-tightening may damage the gas valve. • Install a manual shutoff valve between the gas meter and unit within six feet of the unit. If a union is installed, the union must be downstream of the manual shutoff valve, between the shutoff valve and the furnace. • • Tighten all joints securely. Connect the furnace to the building piping by one of the following methods: – – • Rigid metallic pipe and fittings.
gas. Do not rely on your sense of smell. Contact a local propane gas supplier about installing a gas detecting warning system. If the presence of gas is suspected, follow the instructions on Page 4 of this manual. All propane gas equipment must conform to the safety standards of the National Board of Fire Underwriters, NBFU Manual 58. For satisfactory operation, propane gas pressure must be 11 inch w.c. at the furnace manifold with all gas appliances in operation.
UPFLOW COOLING AIRFLOW REQUIREMENT (CFM) CUT USING TIN SNIPS 600 800 1000 1200 1400 1600 2000 0453__XA 376* 384 480 576 --- --- --- 0704__XA --- --- 627* 627* 672 768 --- 0905__XA --- --- --- 836* 836* 836* 960 1155__XA --- --- --- 940* 940* 940* 960 Input__Airflow PRESS OUT BY HAND CUT FOUR CORNERS AFTER REMOVING SHEET METAL COUNTERFLOW COOLING AIRFLOW REQUIREMENT (CFM) SCRIBE LINES OUTLINING DUCT FLANGES 600 800 1000 1200 1400 1600 2000 0704__XA --- -
CENTRAL RETURN GRILLE FILTER SUPPORT BRACKET (PROVIDED) SIDE RETURN EXTERNAL FILTER RACK KIT (EITHER SIDE) FILTER FILTER FI LT ER ER LT FI RETURN DUCT AIR FLOW CENTRAL RETURN GRILLE position. 6. Wait five minutes then smell for gas. Be sure check near the floor as some types of gas are heavier than air. 7. If you smell gas after five minutes, immediately follow the instructions on page 4 of this manual.
1. Turn OFF gas to furnace at the manual gas shutoff valve external to the furnace. 2. Connect a calibrated water manometer (or appropriate gas pressure gauge) at either the gas valve inlet pressure boss or the gas piping drip leg. Gas Line Gas Shutoff Valve Gas Line To Furnace Open To Atmosphere Drip Leg Cap With Fitting Manometer Hose Manometer Measuring Inlet Gas Pressure (Alt.
Installation’s seconds per cubic foot: 34 sec/ ft3 Conversion Factor (hours to seconds): 3600 sec/hr Input = (Htg. value x 3600) ÷ seconds per cubic foot Input = (1,000 BTU/ft3 x 3600 sec/hr) ÷ 34 sec/ ft3 Input = 106,000 BTU/hr Minor changes to the input rate may be accomplished through manifold pressure adjustments at the gas valve. Refer to Section XIV, Startup Procedure and Adjustment - Gas Manifold Pressure Measurement and Adjustment for details.
8 7 6 5 Cooling Speed Tap A 8 7 6 5 Normal 8 7 6 5 Cooling Speed Tap B O F F 4 3 2 4 3 2 1 * 100% CFM OFF O F F 1 O F F 8 7 6 5 4 O F F 3 2 1 8 7 6 5 * • O O F N F 8 7 6 5 4 3 2 1 O O N F F 4 3 2 1 Cooling Speed Taps O O N F F 82% CFM Heating Speed Tap A Heating Speed Tap D • 4 3 2 1 O F F 8 4 3 2 1 Profile D ramps up to 50% of the demand for 1/2 minute, then ramps to 82% of the full cooling demand airflow and operates there for approximately 7 1/2 minutes.
motor to reset and recognize new speed selection. Turn on power to furnace. Verify selected CFM by counting the green CFM LED blinks. In general lower heating speeds will: reduce electrical consumption, lower operating sound levels of the blower, and increase the outlet air temperature delivered to the home. The speeds available allow the blower performance to be optimized for the particular homeowner’s needs.
• Circulator blower is energized on the appropriate cool speed at the level and time determined by the selected ramping profile. Electronic air cleaner terminals are energized with circulator blower. • Furnace circulator blower and outdoor cooling unit run their appropriate speed, integrated control module monitors safety circuits continuously. • R and YLO/G or Y/G thermostat contacts open, completing the call for cool. • • Outdoor fan and compressor are de-energized.
step 2 before touching control or wires. 4. Discharge your body to ground before removing a new control from its container. Follow steps 1 through 3 if installing the control on a furnace. Return any old or new controls to their containers before touching any ungrounded object. • Drainage system. Check for blockage and/or leakage. Check hose connections at and internal to furnace. • Wiring. Check electrical connections for tightness and/or corrosion. Check wires for damage. • Filters.
CONDENSATE TRAP AND DRAIN SYSTEM (QUALIFIED SERVICER ONLY) 5. Replace filter by reversing the procedure. BLOWER COMPARTMENT REMOVAL Annually inspect the drain tubes, drain trap, and field-supplied drain line for proper condensate drainage. Check drain system for hose connection tightness, blockage, and leaks. Clean or repair as necessary. 1. Turn OFF electrical power to furnace. 2. Remove blower compartment door. 3. Grasp lower portion of filter and lift up.
Rollout Limit Switch Primary Limit Switch Auxiliary Limit Switch Pressure Switch Induced Draft Blower Door Switch Heat Exchanger Recuperator Coil Coil Front Cover Integrated Control Module Transformer 36
TR OUBLESH OO TIN G CHAR T TROUBLESH OUBLESHOO OOTIN TING CHART Symptoms of Abnormal Operation Associated LED Code2 • Furnace fails to operate. • Integrated control module diagnostic LED provides no signal. NONE Fault Description(s) • No 115 volt power to • Manual disconnect switch furnace, or no 24 volt OFF, door switch open, or power to integrated 24 volt wires improperly control module. connected or loose. • Blown fuse or circuit • Blown fuse or circuit breaker. breaker.
TR OUBLESH OO TIN G CHAR T TROUBLESH OUBLESHOO OOTIN TING CHART Symptoms of Abnormal Operation • Circulator blower runs continuously. No furnace operation. • Integrated control module diagnostic LED is flashing FOUR (4) flashes. Associated Fault Description(s) LED Code2 4 • Primary or auxiliary limit circuit is open. 4 FLASHES • Rollout limit circuit is open. • Induced draft blower and circulator blower runs continuously. No furnace operation.
WIRIN G DIAGRA M WIRING DIAGRAM TO ID BLOWER TWO-STAGE PRESSURE SWITCH ASSEMBLY HIGH FIRE PRESS. SWITCH C NO HI VT 3 RD C WH TWO STAGE GAS VALVE YL 1 2 OR 2 CIRCUIT CONNECTOR WH-5 DISCONNECT FLAME SENSOR GY GY 1 NO TO 115VAC/ 1Ø /60 HZ POWER SUPPLY WITH OVERCURRENT PROTECTION DEVICE C FRONT COVER PRESSURE SWITCH NO L WARNING: RD BU BU OR 24V HUM. PK LOW FIRE PRESS.
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