Lennox Allied Air A96UHMV Installation Instructions Manual
  1. Manuals
  2. Brands
  3. Lennox Manuals
  4. Furnace
  5. Allied Air A96UHMV
  6. Installation instructions manual

Lennox Allied Air A96UHMV Installation Instructions Manual

Warm air gas furnace
Hide thumbs
Table of Contents

Advertisement

Quick Links

Upflow/Horizontal Left and Right Air Discharge
This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in
manuals, be alert to the potential for personal injury or death.
As with any mechanical equipment, personal injury can
result from contact with sharp sheet metal edges. Be
careful when you handle this equipment.
Unit Dimensions ............................................................ 2
Parts Arrangement ........................................................ 3
Gas Furnace ................................................................. 4
Shipping and Packing List ............................................ 4
Safety Information ......................................................... 4
General ......................................................................... 6
Setting Equipment ........................................................ 6
Filters .......................................................................... 11
Duct System ................................................................ 11
Pipe and Fittings Specifications .................................. 12
Joint Cementing Procedure ........................................ 13
Venting Practices ........................................................ 14
Vent Piping Guidelines ................................................ 14
Gas Piping .................................................................. 25
*P506550-01*
(P) 506550-01
506550-01
INSTALLATION INSTRUCTIONS
A96UHMV
Warm Air Gas Furnace
This manual must be left with the homeowner for future reference.
CAUTION

TABLE OF CONTENTS

Improper installation, adjustment, alteration, service or
maintenance can cause property damage, personal injury
or loss of life. Installation and service must be performed
by a licensed professional installer (or equivalent), service
agency or the gas supplier.
Electrical ..................................................................... 28
Integrated Control ....................................................... 34
Blower Motor Performance ......................................... 38
Unit Start Up ................................................................ 49
Gas Pressure Measurement ....................................... 50
High Altitude Information ............................................. 50
Proper Combustion ..................................................... 50
Other Unit Adjustments ............................................... 51
Heating Sequence of Operation ................................. 52
Service ........................................................................ 54
Planned Service .......................................................... 56
Integrated Control Diagnostic Codes .......................... 57
Configuring Unit Size Codes ....................................... 58
Troubleshooting .......................................................... 59
Repair Parts List ......................................................... 65
Allied Air Enterprises, LLC
A Lennox International, Inc. Company
Issue 1230
WARNING
Manufactured By
215 Metropolitan Drive
West Columbia, SC 29170
Page 1 of 66

Advertisement

Table of Contents
loading

Related Manuals for Lennox Allied Air A96UHMV

Summary of Contents for Lennox Allied Air A96UHMV

  • Page 1: Table Of Contents

    Troubleshooting ............59 Gas Piping ..............25 Repair Parts List ............65 Manufactured By Allied Air Enterprises, LLC *P506550-01* A Lennox International, Inc. Company 215 Metropolitan Drive West Columbia, SC 29170 (P) 506550-01 506550-01 Issue 1230 Page 1 of 66...

  • Page 2: Unit Dimensions

    Unit Dimensions - inches (mm) * NOTE - 20C/D size units that require second stage air volumes over 1800 cfm (850 L/S) must have one of the following: 1. Single side return air with transition, to accommodate 20 x 25 x 1 in. (508 x 635 x 25 mm) air filter. 2.

  • Page 3: Parts Arrangement

    A96UHMV Exploded View Figure 1 506550-01 Issue 1230 Page 3 of 66...

  • Page 4: Gas Furnace

    A96UHMV Gas Furnace Safety Information The A96UHMV Category IV gas furnace is equipped with a variable capacity, varable speed integrated control. Each DANGER A96UHMV is shipped ready for installation in the upflow, horizontal left air discharge or horizontal right air discharge DANGER OF EXPLOSION! position.

  • Page 5: Use Of Furnace As A Construction Heater

    For installation in a residential garage, the furnace must be National Fire Protection Association installed so that the burner(s) and the ignition source are 1 Battery March Park located no less than 18 inches (457 mm) above the floor. Quincy, MA 02269 The furnace must be located or protected to avoid physical damage by vehicles.

  • Page 6: General

    Air filters must be replaced upon construction completion. In addition to the requirements outlined previously, the • following general recommendations should be considered The input rate and temperature rise must be set per the when installing one of these furnaces: •...

  • Page 7: Setting Equipment

    SETTING EQUIPMENT UNIT MUST BE LEVEL SIDE TO SIDE IN ALL APPLICATIONS FOR PROPER OPERATION. A SLIGHT TILT TOWARD THE DRAIN IS RECOMMENDED FOR PROPER DRAINAGE. TILT THE UNIT SLIGHTLY (MAX. 1/2”) FROM BACK TO FRONT TO AID IN THE DRAINING OF THE HEAT EXCHANGER. Figure 5 506550-01 Issue 1230...
  • Page 8 Removing the Bottom Panel Side Return Air Remove the two screws that secure the bottom cap to the (with transition and filter) furnace. Pivot the bottom cap down to release the bottom panel. Once the bottom panel has been removed, reinstall the bottom cap.
  • Page 9 NOTE: Units with 1/2 hp blower motor are equipped with Installation Clearances three flexible legs and one rigid leg. The rigid leg is equipped with a shipping bolt and a flat white plastic washer (rather than the rubber mounting grommet used with a flexible mounting leg).
  • Page 10 Setting and Upflow Unit NOTE: Heavy gauge sheet metal straps may be used to When the side return air inlets are used in an upflow suspend the unit from roof rafters or ceiling joists. When application, it may be necessary to install shims on the straps are used to suspend the unit in this way, support must bottom of the furnace.

  • Page 11: Filters

    Duct System Use industry approved standards to size and install the supply and return air duct system. This will result in a quiet and low static system that has uniform air distribution. NOTE: Operation of this furnace in heating mode (indoor blower operating at selected heating speed) with an external static pressure which exceeds 0.8 inches w.c.

  • Page 12: Pipe And Fittings Specifications

    Pipe and Fittings Specifications All pipe, fittings, primer and solvent cement must conform CAUTION with American National Standard Institute and the American Society for Testing and Materials (ANSI/ASTM) standards. Solvent cements for plastic pipe are flammable liquids The solvent shall be free flowing and contain no lumps, and should be kept away from all sources of ignition.

  • Page 13: Joint Cementing Procedure

    OUTDOOR TERMINATION KITS USAGE Table 3 Joint Cementing Procedure 6. Promptly apply solvent cement to end of pipe and inside All cementing of joints should be done according to the socket surface of fitting. Cement should be applied specifications outlined in ASTM D2855. lightly but uniformly to inside of socket.

  • Page 14: Venting Practices

    Venting Practices 1. In areas where piping penetrates joist or interior walls, hole must be large enough to allow clearance on all sides of pipe through center of hole using a hanger. Piping Suspension Guidelines 2. When furnace is installed in a residence where unit is shut down for an extended period of time, such as a vacation home, make provisions for draining condensate collection from trap and lines.
  • Page 15 EXHAUST PIPE Horizontal Application NOTE: All horizontal runs of exhaust pipe must slope back toward unit. A minimum of 1/4” (6 mm) drop for each 12” (305 mm) of horizontal run is mandatory for drainage. NOTE: Exhaust pipe MUST be glued to furnace exhaust fittings. NOTE: Exhaust piping should be checked carefully to make sure there are no sages or low spots.
  • Page 16 MAXIMUM ALLOWABLE VENT LENGTH (feet) Table 5 Page 16 of 66 Issue 1230 506550-01...
  • Page 17 TYPICAL EXHAUST PIPE CONNECTIONS AND CONDENSATE TRAP INSTALLATION IN UPFLOW APPLICATIONS Figure 18 TYPICAL EXHAUST PIPE CONNECTIONS AND CONDENSATE TRAP INSTALLATION IN HORIZONTAL AIR APPLICATIONS (RIGHT HAND DISCHARGE SHOWN) Figure 19 506550-01 Issue 1230 Page 17 of 66...
  • Page 18 This gas furnace is designed for combustion air intake Intake Piping through an inlet in the unit’s top cap. Intake air piping is This gas furnace may be installed only in direct vent independent of exhaust piping. applications. TYPICAL AIR INTAKE PIPE CONNECTIONS IN UPFLOW APPLICATIONS Figure 20 TYPICAL AIR INTAKE PIPE CONNECTIONS IN HORIZONTAL DISCHARGE...
  • Page 19 VENT TERMINATION CLEARANCES FOR DIRECT VENT INSTALLATiONS IN THE USA AND CANADA Figure 22 506550-01 Issue 1230 Page 19 of 66...
  • Page 20 Details of Intake and Exhaust Piping Terminations for Direct Vent Installations FIELD SUPPLIED WALL TERMINATION OR NOTE: In Direct Vent installations, combustion air is taken from outdoors and flue gases are discharged to outdoors. Intake and exhaust pipes may be routed either horizontally through and outside wall or vertically through the roof.
  • Page 21 EXHAUST PIPE TERMINATION SIZE REDUCTION FIELD SUPPLIED WALL TERMINATION with INTAKE ELBOW Table 6 5. On field supplied terminations for sidewall exit, exhaust piping may extend a maximum of 12 inches (305 mm) for 2” PVC and 20 inches (508 mm) for 3” (76 mm) PVC beyond the outside wall.
  • Page 22 DIRECT VENT CONCENTRIC WAL TERMINATION 71M80, 69M29 OR 60L46 (US) 44W92 or 44W93 (Canada) Figure 27 FLUSH-MOUNT SIDE WALL TERMINATION 51W11 Figure 28 Page 22 of 66 Issue 1230 506550-01...
  • Page 23 1. Determine which side condensate piping will exit the DIRECT VENT APPLICATION unit, location of trap, field-provided fittings and length of USING EXISTING CHIMNEY PVC pipe required to reach available drain. 2. Remove plug (Figure 30) from the cold end header box at the appropriate location on the side of the unit.
  • Page 24 CONDENSATE TRAP LOCATIONS (Unit shown in horizontal right hand discharge position Figure 32 CONDENSATE ASSEMBLY UNIT WITH EVAPORATOR COIL Figure 33 Figure 34 CAUTION A separate drain line must be run to the drain from the condensate trap. DO NOT connect the condensate trap drain into the drain line from the evaporator coil.

  • Page 25: Gas Piping

    Gas Piping IMPORTANT CAUTION Compounds used on threaded joints of gas piping must If a flexible gas connector is required or allowed by the be resistant to the actions of liquified petroleum gases. authority that has jurisdiction, black iron pipe shall be installed at the gas valve and extend outside the furnace cabinet.
  • Page 26 NOTE: BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET Figure 36 Horizontal Applications Possible Gas Piping Configurations NOTE: BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET Figure 37 Page 26 of 66 Issue 1230 506550-01...
  • Page 27 Removal of the Furnace from Common Vent 2. Inspect the venting system for proper size and horizontal In the event that an existing furnace is removed from a pitch. Determine that there is no blockage, restriction, venting system commonly run with separate gas appliances, leakage, corrosion, or other deficiencies which could the venting system is likely to be too large to properly vent cause an unsafe condition.

  • Page 28: Electrical

    Electrical The unit is equipped with a field makeup box. The makeup ELECTROSTATIC DISCHARGE (ESD) box may be moved to the right side of the furnace to facilitate Precautions and Procedures installation. If the make up box is moved to the right side, clip the wire ties that bundle the wires together.
  • Page 29 8. One line voltage “HUM” 1/4” spade terminal is provided Thermostat Selection on the furnace integrated control. Any humidifier or other This unit is designed to operate in a variable rate capacity 120V accessory rated up to one amp can be connected mode using a two-stage thermostat.
  • Page 30 Low Voltage Field Wiring * “R” required on some units. Table 11 Page 30 of 66 Issue 1230 506550-01...
  • Page 31 Low Voltage Field Wiring * “R” required on some units. Table 11 506550-01 Issue 1230 Page 31 of 66...
  • Page 32 Low Voltage Field Wiring Single Stage 2 Stage Table 11 Page 32 of 66 Issue 1230 506550-01...
  • Page 33 TYPICAL WIRING DIAGRAM Figure 40 506550-01 Issue 1230 Page 33 of 66...

  • Page 34: Integrated Control

    Integrated Control Figure 41 Page 34 of 66 Issue 1230 506550-01...
  • Page 35 Thermostat Selection Switch Settings Table 12 These units are equipped with an integrated control. This satisfied) can be adjusted by moving switches 4 and 5 on control manages ignition timing, combustion air inducer the integrated control. The unit is shipped from the factory speed, heating mode fan OFF delays and indoor blower with a blower Off delay of 90 seconds.
  • Page 36 Switches 8 and 9 - Cooling Mode Blower Speed- Cooling Mode Blower Speed Ramping The unit is shipped from the factory with the DIP switches positioned for high speed (4) indoor blower motor operation during the cooling mode. The table below provides the cooling mode blower speeds that will result from different switch settings.
  • Page 37 Diagnostic LED (Figure 41) Switches 14 through 19 - Heating Mode Blower Speed The seven segment diagnostic LED displays operating These switches are factory set at the OFF position which status, target airflow, error codes and other information. The provides 100% of normal speed during HIGH HEAT demand, table on page 58 lists diagnostic LED codes.

  • Page 38: Blower Motor Performance

    BLOWER DATA Page 38 of 66 Issue 1230 506550-01...
  • Page 39 BLOWER DATA 506550-01 Issue 1230 Page 39 of 66...
  • Page 40 BLOWER DATA Page 40 of 66 Issue 1230 506550-01...
  • Page 41 BLOWER DATA 506550-01 Issue 1230 Page 41 of 66...
  • Page 42 BLOWER DATA Page 42 of 66 Issue 1230 506550-01...
  • Page 43 BLOWER DATA 506550-01 Issue 1230 Page 43 of 66...
  • Page 44 BLOWER DATA Page 44 of 66 Issue 1230 506550-01...
  • Page 45 BLOWER DATA 506550-01 Issue 1230 Page 45 of 66...
  • Page 46 BLOWER DATA Page 46 of 66 Issue 1230 506550-01...
  • Page 47 COOLING OPERATING SEQUENCE A96UHMV and Single Stage Outdoor Unit Table 19 506550-01 Issue 1230 Page 47 of 66...
  • Page 48 COOLING OPERATING SEQUENCE A96UHMV and Two Stage Outdoor Unit Table 20 Page 48 of 66 Issue 1230 506550-01...

  • Page 49: Unit Start Up

    Unit Start Up BEFORE PLACING THE UNIT INTO OPERATION Smell all around the furnace area for gas. Be sure to smell FOR YOUR SAFETY READ BEFORE OPERATING next to the floor because some gas is heavier than air and will settle on the floor. WARNING The gas valve on these units are equipped with a gas control switch.

  • Page 50: Gas Pressure Measurement

    9. Replace the access panel. NOTE: To obtain accurate reading, shut off all other gas 10. Turn on all electrical power to the unit. appliances connected to meter. 11. Set the thermostat to desired setting. Supply Pressure Measurement NOTE: When unit is initially started, steps 1 through 11 A threaded plug on the inlet side of the gas valve provides may need to be repeated to purge air from gas line.

  • Page 51: Other Unit Adjustments

    Conversion Kit Requirements and Manifold Test Pressures NOTE: The values given in table 23 are measurements only. The gas valve should not be adjusted. Table 24 Manifold Pressure Measurement Pressure Switches (Two) To correctly measure manifold pressure, the differential The pressure switches are located on the cold end header pressure between the positive gas manifold and the negative box.

  • Page 52: Heating Sequence Of Operation

    Heating Sequence of Operation 6. At the end of the recognition delay and on all subsequent The integrated control initiates a pressure switch calibration calls for heat in the same heating cycle, the intergrated at the initial unit start-up on a call for heat. The ignition control energizes the combustion air inducer at high control will also initiate a calibration any time main power is speed.
  • Page 53 5. If second-stage heat is required, the thermostat second 2. Once the control receives a signal that the low fire stage heat contacts close and send a signal to the pressure switch has closed, the combustion air inducer integrated control. The integrated control either begins a 15 second prepurge at the ignition speed.

  • Page 54: Service

    Service 3. Check amp-draw on the blower motor. Motor Nameplate_____________ Actual___________ WARNING Winterizing and Condensate Trap Care 1. Turn off power to the unit. ELECTRICAL SHOCK, FIRE, 2. Have a shallow pan ready to empty condensate water. OR EXPLOSION HAZARD. 3.
  • Page 55 18. Remove screws along vestibule sides and bottom which 39. Reconnect 2 pin plug to gas valve. secure vestibule panel and heat exchanger assembly 40. Replace the blower compartment access panel. to cabinet. Remove two screws from blower rail which 41.

  • Page 56: Planned Service

    Planned Service Return air duct - Must be properly attached and provide an air seal to the unit. A service technician should check the following items during an annual inspection. Power to the unit must be shut off for Operating performance - Unit must be observed during the service technician's safety.

  • Page 57: Integrated Control Diagnostic Codes

    Integrated Control Diagnostic Codes Press the diagnostic push button and hold it to cycle through a menu of options. Every five seconds a new menu item will be displayed. Release the button when the desired mode is displayed. When a solid "P" is displayed, the furnace capacity/ size is programmed. When the solid "E"...

  • Page 58: Configuring Unit Size Codes

    Configuring Unit Size Codes Page 58 of 66 Issue 1230 506550-01...

  • Page 59: Troubleshooting

    Troubleshooting: Heating Sequence of Operation Ignition and Call for Low Fire With Two Stage Thermostat 506550-01 Issue 1230 Page 59 of 66...
  • Page 60 Troubleshooting : Heating Sequence of Operation (continued) Call for High Fire With Two Stage Thermostat Page 60 of 66 Issue 1230 506550-01...
  • Page 61 Troubleshooting : Heating Sequence of Operation (continued) Call for Heat Satisfied 506550-01 Issue 1230 Page 61 of 66...
  • Page 62 Troubleshooting : Heating Sequence of Operation (continued) Ignition and Call for Heat with Single Stage Thermostat Page 62 of 66 Issue 1230 506550-01...
  • Page 63 Troubleshooting : Cooling Sequence of Operation Call for Cooling 506550-01 Issue 1230 Page 63 of 66...
  • Page 64 Troubleshooting : Continuous Fan Sequence of Operation Continuous Low Speed Indoor Blower Sequence of Operation Page 64 of 66 Issue 1230 506550-01...

  • Page 65: Repair Parts List

    REPAIR PARTS LIST The following repair parts are available through Allied Air distributors. When ordering parts, include the complete furnace model number listed on the nameplate. All service must be performed by a licensed professional installer (or equivalent), service agency, or gas supplier. Cabinet Parts Heating Parts Outer Access Panel...
  • Page 66 REQUIREMENTS for COMMONWEALTH of MASSACHUSETTS Modifications to NFPA-54, Chapter 10 4. INSPECTION. The state or local gas inspector of the Revise NFPA-54 section 10.8.3 to add the following side wall, horizontally vented, gas-fueled equipment requirements: shall not approve the installation unless, upon inspection, the inspector observes carbon monoxide For all side wall, horizontally vented, gas-fueled equipment detectors and signage installed in accordance with the...

This manual is also suitable for:

Allied air a96uhmv070b12sAllied air a96uhmv090c12sAllied air a96uhmv090c16sAllied air a96uhmv090c20sAllied air a96uhmv110c20sAllied air a96uhmv135d20s

Table of Contents