Allied A97DS2V Installation Instructions Manual
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Allied A97DS2V Installation Instructions Manual

Warm air gas furnace downflow air discharge direct vent & non-direct vent
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INSTALLATION INSTRUCTIONS
A97DS2V with
107046-XX Control
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.
NOTICE
A thermostat is not included and must be ordered
separately.
•
A Comfort Sync
®
communicating applications.
•
In non-communicating applications, a traditional
non-communication thermostat may be used.
In all cases, setup is critical to ensure proper system
operation.
Field wiring for both communicating and non-
communicating applications is illustrated in these
instructions.
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.
As with any mechanical equipment, personal injury can
result from contact with sharp sheet metal edges. Be
careful when you handle this equipment.
508363-01
This manual must be left with the homeowner for future reference.
thermostat must be used in
WARNING
CAUTION
Warm Air Gas Furnace
Downflow Air Discharge
Direct Vent & Non-Direct Vent

Table of Contents

Unit Dimensions ..........................................................2
Parts Arrangement.......................................................3
Gas Furnace ................................................................4
Shipping and Packing List ...........................................4
Safety Information .......................................................4
General ........................................................................6
Combustion, Dilution & Ventilation Air .........................7
Installation ...................................................................9
Filters .........................................................................12
Duct System ..............................................................12
Venting Practices .......................................................15
Condensate Piping ....................................................31
Gas Piping .................................................................34
Electrical ....................................................................36
Unit Start-Up ..............................................................52
Other Unit Adjustments..............................................55
Blower Motor Performance ........................................56
Integrated Control Diagnostic Modes ........................60
Integrated Control Diagnostic Codes.........................61
Service.......................................................................66
Planned Service ........................................................68
Repair Parts List ........................................................68
*P508363-01*
Issue 2336
Manufactured By
Allied Air Enterprises LLC
215 Metropolitan Drive
West Columbia, SC 29170
(P) 508363-01
Page 1 of 69

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  • Page 1: Table Of Contents

    Installation and service must be performed by a licensed professional installer (or equivalent), service agency or the gas supplier. Manufactured By Allied Air Enterprises LLC 215 Metropolitan Drive West Columbia, SC 29170 CAUTION *P508363-01* As with any mechanical equipment, personal injury can result from contact with sharp sheet metal edges.

  • Page 2: Unit Dimensions

    Unit Dimensions 9/16 (14) COMBUSTION AIR INTAKE RETURN AIR OPENING EXHAUST AIR OUTLET 2-1/16 (52) 9/16 2-1/4 (14) (57) (127) TOP VIEW 27-3/4 1-1/2 (38) (705) Front Panel 6-1/4 (157) 9/16 19-7/16 9/16 1 (25) (14) (494) (14) 4-1/2 FLOW (114) 1-7/8 (48) OPTIONAL LEFT SIDE...

  • Page 3: Parts Arrangement

    Parts Arrangement CONTROL BOX (includes integrated ignition control and transformer) BLOWER ASSEMBLY BLOWER DECK COMBUSTION CABINET AIR INDUCER HEAT EXCHANGER ASSEMBLY DOOR PANELS PRIMARY LIMIT BURNER BOX GAS VALVE ASSEMBLY AND MANIFOLD Figure 1. 508363-01 Issue 2336 Page 3 of 69...

  • Page 4: Gas Furnace

    Gas Furnace Shipping and Packing List This Category IV gas furnace is shipped ready for Package 1 of 1 contains: installation in the downflow position. 1 - Assembled Gas Unit The furnace is equipped for installation in natural gas 1 - Bag assembly containing the following: applications.
  • Page 5 Use only the type of gas approved for use with this furnace. (or other means to control the flow of air) must adequately Refer to unit nameplate. prevent chilled air from entering the furnace. If the damper is manually operated, it must be equipped to prevent This unit is CSA International certified to ANSI Z21.47 and operation of either the heating or the cooling unit, unless it CSA 2.3 standards.

  • Page 6: General

    INSTRUCTIONS VOIDS MANUFACTURER’S These units should not be installed in areas normally EQUIPMENT LIMITED WARRANTY. ALLIED subject to freezing temperatures. DISCLAIMS ALL LIABILITY IN CONNECTION WITH INSTALLER’S FAILURE TO FOLLOW THE ABOVE INSTALLATION INSTRUCTIONS. Page 6 of 69 Issue 2336...

  • Page 7: Combustion, Dilution & Ventilation Air

    the National Fuel Gas Code (ANSI-Z223.1/NFPA 54). This Combustion, Dilution & Ventilation Air reprinted material is not the complete and official position of ANSI on the referenced subject, which is represented If this unit is installed as a Non-Direct Vent Furnace, follow only by the standard in its entirely.
  • Page 8 When the furnace is installed so that supply ducts carry It is also permissible to bring air for combustion from a air circulated by the furnace to areas outside the space ventilated attic (Figure 9) or ventilated crawl space (Figure containing the furnace, the return air must be handled by 10).

  • Page 9: Installation

    Roof Terminated Exhaust Pipe Inlet Air Minimum 12 in. (305mm) Ventilation Furnace above Crawl Louvers (Crawl Space) Space Floor Coupling or *Intake Debris Screen Provided 3 in. to 2 in. Transition Figure 7. Equipment in Confined Space - All Air from (Field Provided) Outside * See Maximum Vent Lengths table...
  • Page 10 Allow for clearances to combustible materials as indicated on the unit nameplate. Minimum clearances for closet or WARNING alcove installations are shown in Figure 14. Improper installation of the furnace can result in personal injury or death. Combustion and flue products must never be allowed to enter the return air system or air in the living space.
  • Page 11 Installation on Non-Combustible Flooring Front to Rear Side to Side Cabinet Cut floor opening keeping in mind clearances listed Width Number on unit rating plate. Also keep in mind gas supply B Cabinet connections, electrical supply, flue and air intake 11M60 18-3/4 (17.5”)

  • Page 12: Filters

    Filters This unit is not equipped with a filter or rack. A field provided filter is required for the unit to operate properly. Table 3 lists recommended filter sizes. A filter must be in place whenever the unit is operating. Furnace Cabinet Width Filter Size 17-1/2”...
  • Page 13 Pipe & Fittings Specifications Piping and Fittings Specifications All pipe, fittings, primer and solvent cement must conform with American National Standard Institute and the American Schedule 40 PVC (Pipe) D1785 Society for Testing and Materials (ANSI/ASTM) standards. The solvent shall be free flowing and contain no lumps, Schedule 40 PVC (Fittings) D2466 undissolved particles or any foreign matter that adversely...
  • Page 14 STANDARD CONCENTRIC Outdoor Outdoor Exhaust 1-1/2” 2” 3” Exhaust Flush Accelerator Concentric Concentric Concentric VENT Accelerator Mount Kit Unit PIPE DIA. (Dia. X Length) (Dia. X Length) (in.) 71M80 69M29 60L46 1-1/2” X 12” 2” X 12” 51W11 ** or 44W93+ +44W92++ +44W92++ 1-1/2...

  • Page 15: Venting Practices

    Removal of the Furnace from Common Vent distribute cement evenly. Do not turn ABS or cellular core pipe. In the event that an existing furnace is removed from a venting system commonly run with separate gas NOTE: Assembly should be completed within 20 appliances, the venting system is likely to be too large to seconds after last application of cement.
  • Page 16 In applications that permit the use of several different sizes of vent pipe, a combination vent pipe may be used. Contact Allied Air Technical Service for assistance in sizing vent pipe in these applications. If this gas furnace replaces a furnace that was commonly vented...
  • Page 17 Use the following steps to correctly size vent pipe diameter. 045, 070, Furnace capacity? 090, 110 Standard or Which termination? Concentric? See Table 3 Which needs most Intake or elbows? Exhaust? How many? 1-1/2”, 2”, Desired pipe size? 2-1/2”, or 3” What is the altitude? Use Table 7 to find max pipe length.
  • Page 18 Standard Termination at Elevation 0 - 4500 ft 1-1/2" Pipe 2" Pipe 2-1/2" Pipe 3" Pipe Number of Model Model Model Model 90° Elbows Used Standard Termination Elevation 4500 - 10,000 ft 1-1/2" Pipe 2" Pipe 2-1/2" Pipe 3" Pipe Number of Model Model...
  • Page 19 Concentric Termination at Elevation 0 - 4500 ft 1-1/2" Pipe 2" Pipe 2-1/2" Pipe 3" Pipe Number of Model Model Model Model 90° Elbows Used Concentric Termination Elevation 4500 - 10,000 ft 1-1/2" Pipe 2" Pipe 2-1/2" Pipe 3" Pipe Number of Model Model...
  • Page 20 Standard Termination at Elevation 0 - 4500 ft 1-1/2" Pipe 2" Pipe 2-1/2" Pipe 3" Pipe Number of Model Model Model Model 90° Elbows Used NOTE: Additional vent pipe and elbows used to terminate the vent pipe outside the structure must be included in the total vent length calculation.
  • Page 21 Pipe size determined in table 7. 2” 2” 2” 2” 2” INTAKE EXHAUST TOP VIEW NOTE: 1-1/2” Vent Pipe Diameter Allowed Only on 045/070 Units TRANSITION 3” 1-1/2” *2” 3” TRANSITION TRANSITION *2” *2” *2” * 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 22 Position termination according to location given in Figure 28 or Figure 29. In addition, position termination so it is Roof Terminated free from any obstructions and 12” above the average Exhaust Pipe snow accumulation. At vent termination, care must be taken to maintain protective coatings over building materials (prolonged Inlet Air exposure to exhaust condensate can destroy protective...
  • Page 23 Maximum Allowable Exhaust Vent Pipe Length (in ft.) without Insulation in Unconditioned Space for Winter Design Temperatures Unit Input Size Winter Design Vent Pipe Temperatures ºF (ºC) Diameter 1-1/2 in. 32 to 21 2 in. (0 to -6) 2-1/2 in. 3 in.
  • Page 24 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 (305mm) or 12 inches (305mm) 12 inches (305mm) or 12 inches (305mm) porch, deck or balcony...
  • Page 25 VENT TERMINATION CLEARANCES FOR NON-DIRECT VENT INSTALLATIONS IN THE US 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 (305mm) or 12 inches (305mm) 12 inches (305mm) or 12 inches (305mm) porch, deck or balcony...
  • Page 26 Details of Intake and Exhaust Piping Terminations for Direct Vent Installations NOTE: In Direct Vent installations, combustion air is taken from outdoors and flue gases are discharged to outdoors. NOTE: Flue gas may be slightly acidic and may adversely affect some building materials. If any vent termination is Inlet Air Minimum 12 in.
  • Page 27 sized according to Table 8. The intake piping may be 2” EXTENSION FOR 2” PVC equipped with a 90° elbow turndown. Using a turndown PIPE1” EXTENSION FOR 3” PVC PIPE will add 5 feet (1.5 m) to the equivalent length of the pipe.
  • Page 28 FIELD FABRICATED WALL TERMINATION NOTE − FIELD−PROVIDED REDUCER MAY BE 2” (51mm) 3” (76mm) REQUIRED TO ADAPT LARGER VENT PIPE SIZE Vent Pipe Vent Pipe TO TERMINATION A− Minimum clearance above grade or average 12” (305 mm) 12” (305 mm) snow accumulation B−...
  • Page 29 Details of Exhaust Piping Terminations for Non- Direct Vent Applications Exhaust pipes may be routed either horizontally through an outside wall or vertically through the roof. In attic or closet installations, vertical termination through the roof SIZE TERMINATION PER EXHAUST PIPE is preferred.
  • Page 30 Exhaust through Crawl Space Vent Option All 33” condensing gas furnaces (92%+) are now approved Exhaust from to be vented down through a crawl space. Ensure a vent Furnace pipe drain kit, 51W18 (USA) or 15Z70 (Canada), is used as To Termination directed through the floor joists and into the crawl space.

  • Page 31: Condensate Piping

    Condensate Piping This unit is designed for either right or left side exit of condensate piping in downflow applications. Refer to Figure 47 for condensate trap locations. NOTE: If necessary the condensate trap may be installed up to 5 feet away using PVC pipe from the furnace. Piping from furnace must slope down a minimum of 1/4”...
  • Page 32 Condensate line must slope downward away from the trap to drain. If drain level is above condensate trap, condensate pump must be used. Condensate drain line should be routed within the conditioned space to avoid freezing of condensate and blockage of drain line. If this is not possible, a heat cable kit may be used on the condensate trap and line.
  • Page 33 Optional Condensate Drain Connection Adapter 3/4 inch slip X 3/4 inch mpt (not furnished) 90° Street Elbow 3/4 inch PVC (not furnished) Adapter 3/4 inch slip X 3/4 inch mpt (not furnished) Condensate Drain Connection In Unit 1 (25 mm) Min. Vent 2 (50 mm) Max.

  • Page 34: Gas Piping

    Gas Piping IMPORTANT Compounds used on threaded joints of gas piping must be resistant to the actions of liquified petroleum gases. CAUTION If a flexible gas connector is required or allowed by the authority that has jurisdiction, black iron pipe shall Leak Check be installed at the gas valve and extend outside the After gas piping is completed, carefully check all field-...
  • Page 35 Left Side Piping AUTOMATIC MANUAL (Standard) GAS VALVE MAIN SHUT-OFF MANUAL VALVE AUTOMATIC (with manual MAIN SHUT-OFF (With 1/8 in. NPT GAS VALVE shut-off valve) VALVE Plugged Tap (with manual (With 1/8 in. NPT Shown) shut-off valve) Plugged Tap Shown) GROUND JOINT UNION...

  • Page 36: Electrical

    Refer to Figure 59 for field wiring when using the Electrical Comfort Sync thermostat. Refer to Table 12 for field wiring for all non-communicating applications. ELECTROSTATIC DISCHARGE (ESD) The power supply wiring must meet Class I restrictions. Protected by either a fuse or circuit breaker, select Precautions and Procedures circuit protection and wire size according to unit nameplate.
  • Page 37 10. If the furnace is being matched with a non- Non-Communicating communicating heat pump, refer to the instructions In non-communication applications this furnace is designed packaged with the dual fuel thermostat. to operate in a SINGLE-STAGE mode or TWO-STAGE mode using a conventional thermostat. Generator Use - Voltage Requirements optimal performance...
  • Page 38 Communicating Indoor Furnace Communicating Indoor Furnace Non-Communicating Outdoor Air Conditioner Communicating Outdoor Air Conditioner or Heat Pump Communicating Furnace Communicating Optional Furnace Discharge Air Sensor Optional Discharge Air Sensor Optional Outdoor Optional Outdoor Air Sensor Communicating Air Sensor Thermostat Communicating Green Thermostat Green...
  • Page 39 Optional Accessories for use with any Communicating System NOTE: COMMUNICATING THERMOSTAT SENSES HUMIDITY & CONTROLS HUM CONTACTS TO CYCLE HUMIDIFIER BASED 120V CONNECTIONS ON DEMAND. NO OTHER CONTROL OR HUMIDISTAT “HUM” CONTACT IS REQUIRED. CLOSED ANYTIME OPTIONAL OUTDOOR AIR SENSOR FOR USE WITH HUMIDIFIER HUMIDITY DEMAND (IF NOT ALREADY IN THE SYSTEM FOR OTHER FUNCTIONS IS PRESENT...
  • Page 40 RS-BUS TERMINAL BLOCK THERMOSTAT CONNECTIONS (TB1) I+ = DATA HIGH CONNECTION DS = DEHUMIDIFICATION SIGNAL I- = DATA LOW CONNECTION W2 = HEAT DEMAND FROM 2ND STAGE TSTAT W1 = HEAT DEMAND FROM 1ST STAGE TSTAT RS-BUS TERMINAL BLOCK R = CLASS 2 VOLTAGE TO TSTAT R = 24VAC G = MANUAL FAN FROM TSTAT I+ = DATA HIGH CONNECTION...
  • Page 41 DIP Switch Settings and On-Board Links Thermostat Wiring Connections DIP Switch 1 On Board Links Must Be Cut To Select System Options FURNACE OUTDOOR T'STAT TERM. STRIP UNIT 1 Heat / 1 Cool NOTE: Use DIP DO NOT CUT ANY switch 2 to set ON-BOARD LINKS sceond-stage heat...
  • Page 42 DIP Switch Settings and On-Board Links Thermostat Wiring Connections DIP Switch 1 On Board Links Must Be Cut To Select System Options FURNACE OUTDOOR T'STAT TERM. STRIP UNIT 2 Heat / 2 Cool CUT ON-BOARD LINK W915 2 STAGE COMPR *Not required on all units FURNACE OUTDOOR...
  • Page 43 DIP Switch Settings and On-Board Links Thermostat Wiring Connections DIP Switch 1 On Board Links Must Be Cut To Select System Options FURNACE HEAT PUMP TERM. STRIP T'STAT CUT ON-BOARD LINK W951 Dual Fuel Single- HEAT Stage Heat Pump PUMP Thermostat w/dual fuel capabilities Capable of 2-stage...
  • Page 44 DIP Switch Settings and On-Board Links Thermostat Wiring Connections DIP Switch 1 On Board Links Must Be Cut To Select System Options FURNACE HEAT PUMP TERM. STRIP T'STAT Dual Fuel Single- Stage Heat Pump CUT ON-BOARD LINK Thermostat w/dual W951 fuel capabilities HEAT PUMP...
  • Page 45 BLACK FLAME WHITE/PIN SENSOR FLAME BLACK CIRC WHITE BLACK 120V YELLOW BLUE BLUE BROWN RO(IN) BRN W /YEL BROWN STRIPE RO(OUT) BLUE BLUE PURPLE PS2(HI) PS1(LO) PINK RANGE YELLOW BROWN AUTO RS BUS LINK Figure 59. Wiring Diagram (Control 107046-XX) 508363-01 Issue 2336 Page 45 of 69...
  • Page 46 Integrated Control DIP Switch Settings - is de-energized. Longer OFF delay settings provide lower supply air temperatures; shorter settings provide higher Conventional Thermostat (non-communicating) supply air temperatures. Table 13 provides the blower OFF This furnace is equipped with a two-stage, variable speed timings that will result from different switch settings.
  • Page 47 Switches 9 and 10 — Cooling Mode Blower Speed Ramping Option C Ramping — Blower speed ramping may be used to • Motor runs at 100% until demand is satisfied. enhance dehumidification performance. The switches • Once demand is met, motor runs at 100% for 45 are factory set at option A which has the greatest effect seconds then ramps down to stop.
  • Page 48 Refer to Table 18 for operation sequence codes. Press the button until a solid ”=” is displayed to exit in applications including A97DS2V, a thermostat which the Error Code Recall mode. features humidity control and a single- speed outdoor Unit.
  • Page 49 Operating Sequence Non-Communicating Thermostat with Humidity Control Feature and Single-Speed Outdoor Unit Operating Sequence System Demand System Response Thermostat Demand Relative Humidity Blower System Step Compressor Comments Condition Status (COOL) NO CALL FOR DEHUMIDIFICATION Compressor and indoor Normal Acceptable High 100% blower follow thermostat Operation...
  • Page 50 Operating Sequence Non-Communicating Thermostat with Humidity Control Feature and Two-Speed Outdoor Unit Operating Sequence System Demand System Response Blower Thermostat Demand Relative Humidity System Step Compressor Comments Condition W1 W2 Status (COOL) NO CALL FOR DEHUMIDIFICATION Normal Acceptable 70%* Compressor and indoor Operation - Y1 blower follow thermostat Normal...
  • Page 51 Testing for Proper Venting and Sufficient Seal any unused openings in the venting system. Combustion Air for Non-Direct Vent Applications Visually inspect the venting system for proper size and horizontal pitch. Determine there is no blockage or restriction, leakage, corrosion, or other deficiencies WARNING which could cause an unsafe condition.

  • Page 52: Unit Start-Up

    Follow the lighting instructions to place the unit into Unit Start-Up operation. Set the thermostat to initiate a heating demand. FOR YOUR SAFETY READ BEFORE OPERATING Allow the burners to fire for approximately 3 minutes. Adjust the thermostat to deactivate the heating demand.
  • Page 53 Supply Pressure Measurement 11. Set the thermostat to desired setting. A pressure post on the inlet side of the gas valve provides NOTE: When unit is initially started, steps 1 through access to the supply pressure. Back out the 3/32 Hex screw 11 may need to be repeated to purge air from gas line.
  • Page 54 Proper Combustion High Altitude Information Furnace should operate minimum 15 minutes with correct NOTE: In Canada, certification for installations at manifold pressure and gas flow rate before checking elevations over 4500 feet (1371 m) is the jurisdiction of combustion. Take combustion sample beyond the flue local authorities.

  • Page 55: Other Unit Adjustments

    Electrical Other Unit Adjustments Check all wiring for loose connections. Check for the correct voltage at the furnace (with Primary Limit furnace operating). Correct voltage is 120 VAC ± 10%. The primary limit is located on the heating compartment Check amp–draw on the blower motor with the blower vestibule panel.

  • Page 56: Blower Motor Performance

    Blower Motor Performance A97DS2V045B12S BLOWER PERFORMANCE (less filter) 0 through 0.8 in. w.c. (Heating) and 0 through 1.0 in. w.c. (Cooling) External Static Pressure Range) HEATING Heating Speed Dip First Stage heating Speed - cfm Second Stage Heating Speed-cfm Switch Setting +24% 1115 +18%...
  • Page 57 A97DS2V090C20S BLOWER PERFORMANCE (less filter) 0 through 0.8 in. w.c. (Heating) and 0 through 1.0 in. w.c. (Cooling) External Static Pressure Range) HEATING Heating Speed Dip First Stage heating Speed - cfm Second Stage Heating Speed-cfm Switch Setting 1425 1920 +24% 1355 1830...
  • Page 58 Allowable Heating Speeds Model -18% -12% Default +12% +18% +24% -045 Allowed Allowed Allowed Factory Setting Allowed Allowed Allowed Allowed -070 Allowed Allowed Allowed Factory Setting Allowed Allowed Allowed Allowed -090 Allowed Allowed Allowed Factory Setting Allowed Allowed Allowed Allowed -110 Allowed Allowed...
  • Page 59 When the thermostat demand for low-fire (first stage) After the pre-purge is complete, a 20 second initial heat is satisfied, the gas valve is de-energized and the ignitor warm-up period begins. The combustion air field-selected indoor blower OFF delay begins. The inducer continues to operate at the ignition speed.

  • Page 60: Integrated Control Diagnostic Modes

    Integrated Control Diagnostic Modes Display Action (when button released) No change (idle)* Remain in idle mode Solid E Enter diagnostic recall mode Solid D Discharge air installed Solid F Enter flame signal mode Solid P (variable speed only) Program unit capacity/size (Unit Code)** * No change implies the display will continue to show whatever is currently being displayed for normal operation (blinking decimal, active error code, heat state, etc ..

  • Page 61: Integrated Control Diagnostic Codes

    Integrated Control Diagnostic Codes Code Diagnostic Codes/Status of Equipment Action Required to Clear and Recover E000 No errors in memory. E105 Device communication problem - No other Equipment is unable to communicate indicates numerous devices on RS BUS (Communicating message errors. In most cases errors are related to electrical systems only) noise.
  • Page 62 Code Diagnostic Codes/Status of Equipment Action Required to Clear and Recover E180 Outdoor air temperature sensor failure. Compare outdoor sensor resistance to temperature resistance Only shown if shorted or out of range charts in unit installation instructions. Replace sensor pack (Communicating systems only) if necessary.
  • Page 63 Code Diagnostic Codes/Status of Equipment Action Required to Clear and Recover E227 Low pressure switch open during trial for Check operation of low pressure switch closing on heat call. ignition or run mode. Refer to troubleshooting Measure operating pressure (inches w.c.). Inspect vent and combustion air inducer for correct operation and restriction.
  • Page 64 Code Diagnostic Codes/Status of Equipment Action Required to Clear and Recover E295 Indoor blower motor temperature is too high. Indoor blower motor over temperature (motor tripped on internal protector). Check motor bearings and amps. Replace if necessary. Cleared after blower demand is satisfied. E310 Discharge error temperature sensor failure.
  • Page 65 Program Unit Capacity / Size Mode Power-Up - Number displayed by integrated control represents unit size code (furnace model and capacity). If three horizontal bars are displayed followed by continuous E203, furnace control does not recognize unit size code. Configure per the following: Turn room thermostat to OFF.

  • Page 66: Service

    Electrical Service Check all wiring for loose connections. Check for the correct voltage at the furnace (furnace operating). Correct voltage is 120 VAC ± 10%. WARNING Check amp-draw on the blower motor with the blower compartment access panel in place. ELECTRICAL SHOCK, FIRE, OR EXPLOSION HAZARD.
  • Page 67 13. Mark and disconnect any remaining wiring to heating 35. Reconnect wires to gas valve. compartment components. Disengage strain relief 36. Replace the blower compartment access panel. bushing and pull wiring and bushing through the hole 37. Refer to instruction on verifying gas and electrical in the blower deck.

  • Page 68: Planned Service

    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. All service must be performed by a licensed professional installer (or equivalent), service agency, or gas supplier.
  • Page 69 Requirements for Commonwealth of Massachusetts Modifications to NFPA-54, Chapter 10 INSPECTION. The state or local gas inspector of the side wall, horizontally vented, gas-fueled equipment Revise NFPA-54 section 10.8.3 to add the following shall not approve the installation unless, upon requirements: inspection, the inspector observes carbon monoxide For all side wall, horizontally vented, gas-fueled equipment...

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