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Warm Air Gas Furnace / Downflow 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
A95DF2V/95G2DFV Parts Arrangement ...................... 3
A95DF2V/95G2DFV Gas Furnace ............................... 4
Shipping and Packing List ............................................ 4
Safety Information ......................................................... 4
Use of Furnace as a Construction Heater .................... 5
General ......................................................................... 6
Combustion, Dilution, Ventilation Air ............................. 6
Setting Equipment ........................................................ 6
Filters .......................................................................... 10
Duct System ................................................................ 10
Pipe and Fittings Specifications .................................. 10
Joint Cementing Procedure ........................................ 12
*P506788-01*
(P) 506788-01
506788-01
INSTALLATION INSTRUCTIONS
A95DF2V, 95G2DFV
Direct Vent Only
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.
Venting Practices ........................................................ 12
Vent Piping Guidelines ................................................ 13
Gas Piping .................................................................. 26
Electrical ..................................................................... 29
Unit Start Up ................................................................ 37
Gas Pressure Adjustment ........................................... 38
High Altitude Information ............................................. 39
Other Unit Adjustments ............................................... 40
Blower Motor Performance ......................................... 41
Service ........................................................................ 43
Planned Service .......................................................... 45
Repair Parts List ......................................................... 46
Start Up Checklist ....................................................... 47
A Lennox International, Inc. Company
Issue 1130
WARNING
Manufactured By
Allied Air Enterprises, Inc.
215 Metropolitan Drive
West Columbia, SC 29170
Page 1 of 49
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Summary of Contents for Allied Air A95DF2V
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Page 1: Table Of Contents
TABLE OF CONTENTS Unit Dimensions ............2 Venting Practices ............12 A95DF2V/95G2DFV Parts Arrangement ...... 3 Vent Piping Guidelines ..........13 A95DF2V/95G2DFV Gas Furnace ....... 4 Gas Piping ..............26 Shipping and Packing List ..........4 Electrical .............. -
Page 2: Unit Dimensions
9 1/8 (232) Right 6 9/16 (167) Left 6 1/2 (165) (229) Either Side Supply (19) Supply (19) 19 1/4 (489) (19) FRONT VIEW Model Number A95DF2V/95G2DFV 045-12 17−1/2 16−3/8 070-16 090-20 19−7/8 19−1/2 110-20 Page 2 of 49 Issue 1130 506788-01... -
Page 3: A95Df2V/95G2Dfv Parts Arrangement
Expanded View Figure 1 506788-01 Page 3 of 49 Issue 1130... -
Page 4: A95Df2V/95G2Dfv Gas Furnace
Gas Furnace Safety Information This Category IV gas furnace is shipped ready for installation in the downflow position. WARNING The furnace is equipped for installation in natural gas Improper installation, adjustment, alteration, service or applications. A conversion kit (ordered separately) is required maintenance can cause property damage, personal injury for use in propane/LP gas applications. -
Page 5: Use Of Furnace As A Construction Heater
Locations and Clearances This furnace is CSA International certified for installation Heating Unit Installed Parallell to Air Handler Unit clearances to combustible material as listed on the unit nameplate and in the table in Figure 7. Accessibility and service clearances must take precedence over fire protection clearances. -
Page 6: General
Consult authorities from address shown below, or contact your supervisor. having jurisdiction before installation. Allied Air Enterprises, Inc. 215 Metropolitan Drive In addition to the requirements outlined previously, the West Columbia, SC 29170... -
Page 7: Setting Equipment
Shipping Bolt Removal Allow for clearances to combustible materials as indicated on the unit nameplate. Minimum clearances for closet or NOTE: Units with a 1/2 hp blower motors are equipped with alcove installations are shown in Figure 7. 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 WARNING... - Page 8 Installation on Non-Combustible Flooring WARNING 1. Cut floor opening keeping in mind clearances listed on unit rating plate. Also keep in mind gas supply Improper installation of the furnace can result in personal connections, electrical supply, flue and air intake injury or death.
- Page 9 Combustible Flooring Base Opening Size Front to Rear Side to Side Cabinet Catalog Width Number FURNACE B Cabinet 11M60 18 − 3/4 (17.5") C Cabinet 11M61 22 − 3/4 (21") COOLING COIL Table 2 PROPERLY SIZED FLOOR OPENING PLENUM FURNACE SUPPLY AIR PLENUM PROPERLY...
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Page 10: Filters
Filters Pipe & Fittings Specifications This unit is not equipped with a filter or rack. A field provided All pipe, fittings, primer and solvent cement must conform filter is required for the unit to operate properly. Table 3 lists with American National Standard Institute and the American recommended filter sizes. - Page 11 Outdoor Exhaust Exhaust Flush- 1−1/2" 2" 3" VENT Mount Concentric Concentric Concentric Accelerator Accelerator PIPE (Dia. X (Dia. X A95DF2V DIA. Length) Length) (in.) 95G2DFV 60L46 71M80 69M29 1−1/2" X 12" 2" X 12" 51W11** 44W92 44W92 44W93 2−1/2 2−1/2 2−1/2...
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Page 12: Joint Cementing Procedure
Joint Cementing Procedure Venting Practices All cementing of joints should be done according to the specifications outlined in ASTM D 2855. Piping Suspension Guidelines NOTE: A sheet metal screw may be used to secure the SCHEDULE 40 intake pipe to the connector, if desired. Use a drill or self PVC −... -
Page 13: Vent Piping Guidelines
Contact Allied Air Technical Service for assistance in sizing vent pipe in these applications. MINIMUM VENT PIPE LENGTHS A95DF2V &... - Page 14 A95DF2V & 95G2DFV Maximum Allowable Intake or Exhaust Vent Length in Feet Standard Termination at Elevation 0 4500 ft. 2" Pipe Pipe 3" Pipe Number Of 90° Model Model Model Elbows Used Standard Termination Elevation 3" Pipe Pipe Number 2" Pipe Of 90°...
- Page 15 A95DF2V & 95G2DFV Maximum Allowable Intake or Exhaust Vent Length in Feet Concentric Termination at Elevation 0 4500 ft. 2" Pipe Pipe 3" Pipe Number Of 90° Model Model Model Elbows Used 3" Pipe Pipe Number 2" Pipe Of 90°...
- Page 16 Typical Exhaust Pipe Connections Pipe size determined in Table 7. 2” 2” 2” 2” 2” 3” TRANSITION INTAKE EXHAUST DO NOT transition from smaller *2” to larger pipe size in horizontal TOP VIEW runs of exhaust pipe. * When transitioning up in pipe size, use the shortest length of 2” PVC pipe possible. NOTE: Exhaust pipe and intake pipe must be the same diameter.
- Page 17 Intake Piping NOTE: During extremely cold temperatures, below This furnace may be installed in Direct Vent applications, approximately 20° F (6° C), units with long runs of vent pipe only. through unconditioned space, even when insulated, may form ice in the exhaust termination that prevents the unit Follow the next two steps when installing the unit in Direct from operating properly.
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Page 18: Vent Termination Clearances
Vent Termination Clearances For Direct Vent installations in the USA and Canada INSIDE CORNER DETAIL Fixed Operable Fixed Closed Closed Operable AREA WHERE TERMINAL AIR SUPPLY INLET VENT TERMINAL IS NOT PERMITTED US Installations Canadian Installations Clearance above grade, veranda, 12 inches (305 mm) or 12 in. - Page 19 Details of Intake and Exhaust Piping Terminations for Direct Vent Roof Termination Kit Direct Vent Installations (15F75 or 44J41) 3"(76mm) MAX. NOTE: In Direct Vent installations, combustion air is taken Inches(mm) SIZE TERMINATION PIPE PER TABLE 8. from outdoors and flue gases are discharged to outdoors. UNCONDITIONED ATTIC SPACE NOTE: Flue gas may be slightly acidic and may adversely...
- Page 20 Intake Front View of Intake and Exhaust Exhaust Intake Exhaust 2" (51mm) 3" (76mm) Vent Pipe Vent Pipe A − Clearance above grade or average snow 12" (508 mm) Min. 12" (508 mm) Min. accumulation 12" B −Horizontal 6" (152 mm) Min. 6"...
- Page 21 Field Supplied Wall Termination Field Supplied Wall Termination NOTE − FIELD PROVIDED NOTE − FIELD PROVIDED REDUCER MAY BE 1/2" (13 mm) ARMAFLEX REDUCER MAY BE REQUIRED TO ADAPT 1/2" (13 mm) ARMAFLEX INSULATION IN UN- REQUIRED TO ADAPT LARGER VENT PIPE SIZE INSULATION IN UN- CONDITIONED SPACE LARGER VENT PIPE SIZE...
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Page 22: Front View
Direct Vent Concentric Rooftop Termination Optional Vent Termination for Multiple Unit Installation of Direct Vent Wall Termination Kit 71M80, 69M29 or 60L46 (US) 44W92 or 44W93 (Canada) 1 1/2" (38mm) accelerator 12" provided on 71M80 & 44W92 EXHAUST (305mm) EXHAUST VENT 5−1/2"... - Page 23 Condensate Piping Condensate Trap and Plug Locations This unit is designed for either right or left side exit of condensate piping in downflow applications. Refer to Figure 28 for condensate trap locations. NOTE: If necessary the condensate trap may be installed up to 5”...
- Page 24 Unit with Evaporator Coil Condensate trap and Field−Provided Vent evaporator coil must drain separately as shown. Drain Figure 30 CAUTION A separate drain line must be run to the drain from the condensate trap to ensure proper drainage and pressure switch operation.
- Page 25 Trap Drain Assembly Using 1/2” PVC or 3/4” PVC OPTIONAL Condensate Drain Connection Adapter 1/2 inch slip X Adapter 1/2 inch slip X 1/2 inch mpt (Not Furnished) Condensate Drain 1/2 inch mpt (Not Furnished) Connection In Unit Vent 90 Street Elbow 1 (25) Minimum 1/2 inch PVC 5 Feet...
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Page 26: Gas Piping
Gas Piping IMPORTANT Compounds used on threaded joints of gas piping must CAUTION be resistant to the actions of liquified petroleum gases. If a flexible gas connector is required or allowed by the authority that thas jurisdiction, black iron pipe shall be installed at the gas valve and extend outside the furnace Leak Check cabinet. - Page 27 Left Side Piping MANUAL AUTOMATIC (Standard) MAIN SHUT−OFF GAS VALVE MANUAL VALVE AUTOMATIC (with manual MAIN SHUT−OFF Plug (With 1/8 in. NPT shut−off valve) GAS VALVE VALVE Plugged Tap (with manual Plug (With 1/8 in. NPT Shown) shut−off valve) Plugged Tap Shown) GROUND JOINT UNION...
- Page 28 Removal of the Furnace from Common Vent 3. Close all building doors and windows and all doors In the event that an existing furnace is removed from a between the space in which the appliances remaining venting system commonly run with separate gas appliances, connected to the common venting system are located the venting system is likely to be too large to properly vent and other spaces of the building.
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Page 29: 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. Seal unused openings on left side with plugs removed from right side. - Page 30 7. One line voltage “EAC” 1/4" spade terminal is provided Electrical Wiring on the furnace integrated control. Any electronic air cleaner or other accessory rated up to one amp can be connected to this terminal with the neutral leg of the WARNING circuit being connected to one of the provided neutral Risk of electrical shock.
- Page 31 If continuous blower operation has been selected, the (A95DF2V or 95G2DFV). To activate this option, move the variable speed motor will slowly ramp down until it reaches jumper pin (see Figure 36) to desired setting (5 minutes or the airflow for that mode.
- Page 32 Adjust Tap Primary and Secondary Limits Airflow amounts may be increased or decreased by 10% by The primary limit is located on the heating compartment moving the ADJUST jumper plug (see Figure 37) from the vestibule panel. The secondary limits (if equipped) are NORM position to the (+) or (-) position.
- Page 33 The igniter energizes and is allowed to warm up for 20 If the active dehumidification feature is enabled, the seconds before the gas valve energizes on 1 stage and circulating blower runs at 70% of the selected cooling speed burners ignite. 45 seconds after the control confirms ignition as long as there is a call for dehumidification.
- Page 34 Connect the desired speed tap to the “EAC” terminal and the Failure Codes - Red LED neutral tap to the neutral terminal on the ignition control (refer to the furnace wiring diagram). The ignition control will control the motor’s operation, including a nominal 20 second “on” delay with a call for heat and a nominal 180 second “off”...
- Page 35 High Heat State LED On A95DF2V and 95G2DFV models, a green LED is provided on the control board to indicate high heat state (see Table 12). CFM LED On A95DF2V and 95G2DFV models equipped with a variable speed motor, an amber LED is provided on the control board to display CFM.
- Page 36 TYPICAL WIRING DIAGRAM Figure 39 Page 36 of 49 Issue 1130 506788-01...
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Page 37: Unit Start Up
Unit Start-Up Priming Condensate Trap The condensate trap should be primed with water prior to FOR YOUR SAFETY READ BEFORE OPERATING start-up to ensure proper condensate drainage. Either pour 10 fl. oz. (300 ml) of water into the trap, or follow these steps to prime the trap: 1. -
Page 38: Gas Pressure Adjustment
Gas Pressure Adjustment 9. Replace the heating compartment access panel. 10. Turn on all electrical power to the unit. Gas Flow (Approximate) 11. Set the thermostat to desired setting. NOTE: When unit is initially started, steps 1 through 11 may need to be repeated to purge air from gas line. 12. -
Page 39: High Altitude Information
Manifold and Supply Line Pressures Altitudes High Altitude Information NOTE: In Canada, certification for installations at elevations over 4500 feet (1372 m) is the jurisdiction of local authorities. Units may be installed at altitudes up to 10,000 ft. above sea level without manifold adjustment. Units installed at altitude of 4501 - 10,000 feet (1373 to 3048 m) may require Table 14 a pressure switch change which can be ordered separately. -
Page 40: Other Unit Adjustments
Other Unit Adjustments Thermostat Heat Anticipation Set the heat anticipator setting (if adjustable) according to Primary Limit the amp draw listed on the wiring diagram that is attached The primary limit is located on the heating compartment to the unit. vestibule panel. -
Page 41: Blower Motor Performance
Blower Data A95DF2V & 95G2DFV Heating CFM @ .50 w.c. Motor Blower Temp Model Size (hp) Size Rise Setting "D" Setting "C" Setting "B" Setting "A" 1015 1210 35-65 1070 1000 A95DF2V045B12S 10x9 1110 20-50 1055 Cooling CFM @ .50 w.c. - Page 42 Blower Data A95DF2V & 95G2DFV Heating CFM @ .50 w.c. Motor Blower Temp Model Size (hp) Size Rise Setting "D" Setting "C" Setting "B" Setting "A" 1395 1555 1695 1825 40-70 1275 1395 1585 1670 1145 1265 1405 1525 A95DF2V090C20S...
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Page 43: Service
Service Electrical 1. Check all wiring for loose connections. 2. Check for the correct voltage at the furnace (furnace WARNING operating). Correct voltage is 120 VAC ± 10%. 3. Check amp-draw on the blower motor with the blower ELECTRICAL SHOCK, FIRE, compartment access panel in place. - Page 44 16. Remove screws along vestibule sides and bottom which Cleaning the Burner Assembly secure vestibule panel and heat exchanger assembly 1. Turn off electrical and gas power supplies to furnace. to cabinet. Remove two screws from blower rail which Remove upper and lower furnace access panels. secure bottom heat exchanger flange.
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Page 45: Planned Service
Planned Service A service technician should check the following items during an annual inspection. Power to the unit must be shut off for safety. Fresh air grilles and louvers (on the unit and in the room where the furnace is installed) - Must be open and unobstructed to provide combustion air. -
Page 46: Repair Parts List
REPAIR PARTS LIST The following repair parts are available through Allied Air dealers. When ordering parts, include the complete furnace model number listed on the CSA nameplate. Example: A95DF2V045B12S-01. All service must be performed by a licensed professional installer (or equivalent), service agency, or gas supplier. -
Page 47: Start Up Checklist
Start-UP & Performance Check List UNIT SET UP Furnace: Model Number_______________ Serial Number_________________ SUPPLY Line Voltage GAS SUPPLY LP Propane Gas Natural Gas Piping Connections Tight Leak Tested Flter RETURN AIR Gas Supply Pressure DUCT SYSTEM SUPPLY AIR DUCT Sealed Insulated (if necessary) RETURN DUCT Sealed... - Page 48 UNIT OPERATION HEATING MODE COOLING MODE GAS MANIFOLD PRESSURE “W.C.” ______ INDOOR BLOWER AMPS ______ COMBUSTION SAMPLE CO CO _____ PPM TEMPERATURE DROP ______ ______ Return Duct Temperature INDOOR BLOWER AMPS ______ ______ Supply Duct Temperature ______ Temperature Drop TEMPERATURE RISE TOTAL EXTERNAL STATIC (dry coil) Supply Duct Temperature ______...
- Page 49 REQUIREMENTS for COMMONWEALTH of MASSACHUSETTS Modifications to NFPA-54, Chapter 10 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 shall requirements: not approve the installation unless, upon inspection, the For all side wall, horizontally vented, gas fueled equipment inspector observes carbon monoxide detectors and installed in every dwelling, building or structure used in whole...