AMV8/ADV8 TWO-STAGE GAS-FIRED WARM AIR FURNACE INSTALLATION INSTRUCTIONS (CATEGORY 1) Installer: Affix all manuals adjacent to the unit. 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. ATTENTION INSTALLING PERSONNEL As a professional installer you have an obligation to know the product better than the customer.
Table of Contents I. WARNINGS ....................................................................................................................................................................... 4 TO THE OWNER ............................................................................................................................................................. 4 TO THE INSTALLER .........................................................................................................................
Table of Contents XI. SEQUENCE OF OPERATION ........................................................................................................................................ 23 (INTEGRATED IGNITION CONTROL) ................................................................................................................................. 23 NORMAL HEATING SEQUENCE ...........................................................................................................................................
I. WARNINGS TO THE INSTALLER Before installing this unit, please read this manual thoroughly to familiarize yourself with specific items which must be adhered to, including but not limited to: unit maximum external static pressure, gas pressures, BTU input rating, proper electrical connections, circulating air temperature rise, minimum or maximum CFM, and motor speed connections, and venting. These furnaces are designed for Category I venting only.
3. Service integrated control module or connecting wiring following the discharge process in step 2. Use caution not to recharge your body with static electricity; (i.e., do not move or shuffle your feet, do not touch ungrounded objects, etc.). 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.
Additional helpful publications available from the NFPA are, NFPA 90A - Installation of Air Conditioning and Ventilating System and NFPA 90B - Warm Air Heating and Air Conditioning System. NOTE: The Commonwealth of Massachusetts requires that the following additional requirements must also be met: • Gas furnaces must be installed by a licensed plumber or gas fitter. • A T-handle gas cock must be used.
ACCESSIBILITY CLEARANCE, WHERE GREATER, SHOULD TAKE PRECEDENCE OVER MINIMUM FIRE PROTECTION CLEARANCE. A gas-fired furnace for installation in a residential garage must be installed so that the ignition source and burners are located not less than eighteen inches (18") above the floor and is protected or located to prevent physical damage by vehicles. A gas furnace must not be installed directly on carpeting, tile, or other combustible materials other than wood flooring.
The following vent testing procedure is reproduced from the American National Standard/National Standard of Canada for Gas-Fired Central Furnaces ANSI Z21.47b-2002, CSA-2.3b-2002 Section 1.23.1. The following steps shall be followed with each appliance connected to the venting system placed in operation, while any other appliances connected to the venting system are not in operation: DRAFTS OR DEAD SPOTS -BEHIND DOORS -IN CORNERS -UNDER CABINETS a. Seal any unused openings in the venting system; b.
Chimney or Gas Vent NOTE: Each opening must have a free area of not less than one square inch per 1000 BTU of the total input rating of all equipment in the enclosure, but not less than 100 square inches. (b) Equipment shall be installed in a location in which the facilities for ventilation permit satisfactory combustion of gas, proper venting and the maintenance of ambient temperature at safe limits under normal conditions of use.
Chimney or Gas Vent NOTE: The single opening must have a free area of not less than one square inch per 3000 BTU of the total input rating of all equipment in the enclosure, but not less than the sum of the areas of all vent connectors in the confined space. Ventilation lou vers (ea ch end of attic) N OTE: The inlet and outlet a ir openings must each have a free area of not less than one square inch per 4000 B TU of the total input rating of all equipment in the e nclosure.
VI. CATEGORY I VENTING (VERTICAL VENTING) WARNING TO PREVENT POSSIBLE PERSONAL INJURY OR DEATH DUE TO ASPHYXIATION, THIS FURNACE MUST BE CATEGORY I VENTED. DO NOT VENT USING CATEGORY III VENTING. Supply Air Category I Venting is venting at a non-positive pressure. A furnace vented as Category I is considered a fan-assisted appliance and the vent system does not have to be “gas tight.
Researchers have discovered that the winter design temperatures have a direct impact on the suitability of this type of venting. In most situations, the existing masonry chimneys will require a properly sized metallic liner.
10’ or Less 2’ Min. CHECK 3 - CHIMNEY CROWN CONDITION. Damage from condensate usually shows up first in the crown. If any of the following trouble signs are present, the condition of the crown is not satisfactory: 2’ Min. 3’ Min. a) b) c) d) e) f) Wall or Parapet Chimney 10’ or Less For problems a, b, or c, see Fix 3. If problems d, e, or f are present, see Fix 4. IMPORTANT: It may be necessary to follow both Fix 3 and Fix 4. 2’ Min. 3’ Min.
In some cases, a shorter extension above the roof may be possible with a liner than would be required with a masonry chimney. If a metal liner is not present, a clay tile liner must be present, or the chimney must be lined (Fix 4). Use a flashlight and small mirror at the cleanout or vent connector to inspect the clay tile liner. If any of the following problems are present: For further information on relining, see Fix 4.
Common sources of chlorine and fluorine compounds include indoor swimming pools and chlorine bleaches, paint strippers, adhesives, paints, varnishes, sealers, waxes (which are not yet dried) and solvents used during construction and remodeling. Various commercial and industrial processes may also be sources of chlorine/ fluorine compounds. CAUTION LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING CONTROLS. WIRING ERRORS CAN CAUSE IMPROPER AND DANGEROUS OPERATION.
1. Remove both doors from the furnace. 2. Remove and save the screws holding the junction box to the left side of the furnace. 3. Models that have the junction box located in the blower compartment will need to rotate the junction box 180 degrees. Models that have the junction box located in the burner compartment will need to move the juction box directly over. 4. Attach the junction box to the right side of the furnace, using the screws removed in step 2. 5. Check the location wiring.
W1 Y B/C R G R W1 DEHUM TWIN W2 Furnace Integrated Control Module To install/connect a dehumidistat: NEU C HOT 1. Turn OFF power to furnace. 2. Secure the dehumidistat neutral wire (typically the white lead) to the screw terminal marked “DEHUM” on the furnace integrated control module. 3. Secure the dehumidistat hot wire (typically the black lead) to the screw terminal marked “R” on the furnace integrated control module. 4.
115 VOLT LINE CONNECTION OF ACCESSORIES (HUMIDIFIER AND ELECTRONIC AIR CLEANER) IX. GAS SUPPLY AND PIPING GENERAL The furnace rating plate includes the approved furnace gas input rating and gas types. The furnace must be equipped to operate on the type of gas applied. This includes any conversion kits required for alternate fuels and/or high altitude. WARNING TO AVOID PERSONAL INJURY, ELECTRICAL SHOCK OR DEATH, DISCONNECT ELECTRICAL POWER BEFORE SERVICING OR CHANGING ANY ELECTRICAL WIRING.
Input = 1,000 (heating value of the gas) X 3600 (constant) / 52.6 (meter time for 1 ft3 of gas) Maximum Firing Rates at Altitude Model (Kbtu/hr) 70 90 115 Input = 3,600,000 / 52.
The following stipulations apply when connecting gas piping. Refer to Figure 16 for typical gas line connections to the furnace. PROPANE GAS CONVERSION WARNING POSSIBLE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH MAY OCCUR IF THE CORRECT CONVERSION KITS ARE NOT INSTALLED. THE APPROPRIATE KITS MUST BE APPLIED TO INSURE SAFE AND PROPER FURNACE OPERATION. ALL CONVERSIONS MUST BE PERFORMED BY A QUALIFIED INSTALLER OR SERVICE AGENCY. This unit is configured for natural gas.
This unit must be isolated from the gas supply system by closing its manual shutoff valve before pressure testing of gas supply When the gas piping enters through the right side of the furnace, piping system with test pressures equal to or less than 1/2 psig the installer must supply the following fittings (starting from the (3.48 kPa). gas valve): UPFLOW INSTALLATIONS PROPANE GAS TANKS AND PIPING • 90 degree elbows (2). • Close nipple. • Straight pipe to reach the exterior of the furnace .
When the furnace is used in connection with a cooling unit, the furnace should be installed in parallel with or on the upstream side of the cooling unit to avoid condensation in the heating element. With a parallel flow arrangement, the dampers or other means used to control the flow of air must be adequate to prevent chilled air from entering the furnace and, if manually operated, must be equipped with means to prevent operation of either unit unless the damper is in the full heat or cool position.
• If the two-stage thermostat changes the call from high heat to low heat, the control will immediately switch the induced draft blower and gas valve to their low stage settings. The circulator blower will remain on high heating speed for thirty seconds before switching to the low heat circulating speed. • R and W1 (or R and W1/W2) thermostat contacts open, completing the call for heat. • Gas valve closes, extinguishing flame. • Induced draft blower is de-energized following a fifteen second post purge.
XII. START-UP PROCEDURE AND ADJUSTMENT FURNACE SHUTDOWN 1. Set the thermostat to lowest setting. 2. Turn off the electrical power supply to the furnace. 3. Remove the burner compartment door and move the furnace gas valve manual control to the OFF position. 4. Close manual gas shutoff valve external to the furnace. 5. Replace the burner compartment door. Furnace must have a 115 VAC power supply properly connected and grounded. Proper polarity must be maintained for correct operation.
1. Turn OFF gas to furnace at the manual gas shutoff valve external to the furnace. 2. Turn off all electrical power to the system. 3. Back outlet pressure test screw (inlet/outlet pressure boss) out one turn (counterclockwise, not more than one turn). 4. Attach a hose and manometer to the outlet pressure boss of the valve. 5. Turn ON the gas supply. 6. Turn on power and energize main (M) solenoid. Do not energize the HI solenoid. 7. Measure gas manifold pressure with burners firing.
EXAMPLE: CIRCULATOR BLOWER SPEED ADJUSTMENT Installation’s gas heating (HTG) value: 1,000 BTU/ft 3 (Obtained from gas supplier) Installation’s seconds per cubic foot: 34 sec/ ft3 Conversion Factor (hours to seconds): 3600 sec/hr WARNING TO AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK, TURN OFF POWER TO THE FURNACE BEFORE CHANGING SPEED TAPS. Input = (Htg.
• Example: The 70 kBtu is set for 990 CFM on cooling, the “ADJUST” is set to “-” (minus). The four heating speeds available are “A Minus”, “B Minus”, “C Minus”, and “D Minus”. “B Minus” has a rise of 56°F for both stages which is within the 30-60°F rise range for the 70 kBtu. This setting will keep electrical consumption to a minimum. Set the “Heat” speed DIP switches to “A”. Profile A provides only an OFF delay of 1 minute at 100% of the cooling demand airflow.
AUXILIARY LIMIT CONTROL NOTE: Items in this section refer to the air circulator blower fan, NOT to the induced draft blower. The induced draft blower timing sequence is not adjustable. The circulator blower fan timing is adjustable only on models with optional “heating fan OFF delay” adjustment pins or switches (Figure 28). It is NOT adjustable in any other circumstances. As shipped, the circulator blower fan will remain on for 150 seconds after the gas valve closes.
3. Service integrated control module or connecting wiring following the discharge process in step 2. Use caution not to recharge your body with static electricity; (i.e., do not move or shuffle your feet, do not touch ungrounded objects, etc.). 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.
• Flue pipe system. Check for blockage and/or leakage. Check the outside termination and the connections at and internal to the furnace. • Heat exchanger. Check for corrosion and/or buildup within the heat exchanger passageways. • Burners. Check for proper ignition, burner flame, and flame sense. • Wiring. Check electrical connections for tightness and/or corrosion. Check wires for damage. • Filters. Inspect filter.
CLEANING (QUALIFIED SERVICER ONLY) 1. Shut off electric power and gas supply to the furnace. 2. Remove screws securing manifold to burner bracket. Slightly pull manifold out and away from burner bracket. Burners will drop. Re-secure manifold to burner bracket. 3. Tilt burners to slotted side of burner bracket. Rotate burners clockwise to remove. 4. Use bottle brush to clean burner insert and inside of burner. 5. Replace burner (opposite of removal).
Troubleshooting Chart Symptoms of Abnormal Operation Associated • Furnace fails to operate. NONE Fault Description(s) Possible Causes Corrective Action Cautions and Notes LED Code2 • Integrated control module diagnostic LED provides no signal. • No 115 volt power to furnace, or no 24 volt power to integrated control module. • Blown fuse or circuit breaker.
Troubleshooting 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) Possible Causes Corrective Action 4 • Primary limit circuit is open. • Insufficient conditioned air over the heat exchanger. Blocked filters, restrictive ductwork, improper circulator blower speed, or failed circulator blower. • Check filters and ductwork for blockage.
Wiring Diagram - AMV8 T O 1 1 5 VAC/ 1 Ø / 6 0 HZ POWER SUPPL Y WI T H OV ERCURRENT PROT ECT I ON DEVI CE WH 1 6 WI RE HARNESS L GND N WARNI NG: 2 4 VAC. 2 4 V T HERMOST AT HUM. DI SCONNECT POWER BEFORE SERVI CI NG. WI RI NG TO UNI T MUST BE PROPERLY POL ARI ZED AND GROUNDED.
Wiring Diagram - ADV8 BK 16 WI RE HARNESS 13 14 15 15 14 13 10 11 12 12 11 10 7 8 9 9 8 7 4 5 6 6 5 4 1 2 3 3 2 1 TO 115VAC/ 1 Ø / 60 HZ POWER SUPPLY WI TH OVERCURRENT PROTECTI ON DEVI CE L 24 VAC. HUM. DI SCONNECT POWER BEFORE SERVI CI NG. WI RI NG TO UNI T MUST BE PROPERLY POLARI ZED AND GROUNDED.
NOTE: SPECIFICATIONS AND PERFORMANCE DATA LISTED HEREIN ARE SUBJECT TO CHANGE WITHOUT NOTICE Quality Makes the Difference! All of our systems are designed and manufactured with the same high quality standards regardless of size or efficiency. We have designed these units to significantly reduce the most frequent causes of product failure. They are simple to service and forgiving to operate. We use quality materials and components. Finally, every unit is run tested before it leaves the factory.
