Table of Contents
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35" Tall, High Efficiency Condensing Gas Furnace
DANGER, WARNING, CAUTION, and NOTE
The
signal
words
CAUTION, and NOTE are used to identify levels of
hazard seriousness. The signal word DANGER is
only used on product labels to signify an immediate
hazard. The signal words WARNING, CAUTION,
and NOTE will be used on product labels and
throughout this manual and other manual that may
apply to the product.
DANGER − Immediate hazards which will result in
severe personal injury or death.
WARNING − Hazards or unsafe practices which
could result in severe personal injury or death.
CAUTION − Hazards or unsafe practices which
may result in minor personal injury or product or
property damage.
NOTE − Used to highlight suggestions which will
result in enhanced installation, reliability, or
operation.
TABLE OF CONTENTS
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Printed in U.S.A.
SERVICE AND TECHNICAL
SUPPORT MANUAL
Single Stage, ECM Blower Motor
Save this manual for future reference.
Safety Labeling and Signal Words
DANGER,
WARNING,
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(F/G)9MXE
Signal Words in Manuals
The signal word WARNING is used throughout
this manual in the following manner:
WARNING
!
The signal word CAUTION is used throughout
this manual in the following manner:
CAUTION
!
Signal Words on Product Labeling
Signal words are used in combination with
colors and/or pictures or product labels.
Safety−alert symbol
When you see this symbol on the unit and in
instructions or manuals, be alert to the
potential for personal injury.
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MODELS
(F/G)9MXE0401410A
(F/G)9MXE0401714A
(F/G)9MXE0601412A
(F/G)9MXE0601714A
(F/G)9MXE0801716A
(F/G)9MXE0802120A
(F/G)9MXE1002120A
(F/G)9MXE1202422A
Use of the AHRI Certified TM Mark indicates a
manufacturer's participation in the program.
For verification of certification for individual
products, go to www.ahridirectory.org .
440 04 4311 05
12/5/2013
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Table of Contents
Related Manuals for International comfort products F9MXE0401410A
Summary of Contents for International comfort products F9MXE0401410A
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Page 1: Table Of Contents
SERVICE AND TECHNICAL SUPPORT MANUAL Single Stage, ECM Blower Motor 35” Tall, High Efficiency Condensing Gas Furnace (F/G)9MXE Save this manual for future reference. Safety Labeling and Signal Words DANGER, WARNING, CAUTION, and NOTE Signal Words in Manuals signal words DANGER, WARNING, The signal word WARNING is used throughout... -
Page 2: Safety Considerations
SAFETY CONSIDERATIONS WARNING Improper ins t allation, adjus t ment, alteration, serv ic e, maintenance, or use can cause explosion, fire, electrical shock, PERSONAL INJURY, AND/OR PROPERTY or other conditions which may cause death, personal injury, or DAMAGE HAZARD property damage. Consult a qualified installer, service agency, Failure to carefully read and follow this warning could or your distributor or branch for information or assistance. - Page 3 SERVICE AND TECHNICAL MANUAL Gas Furnace: (F/G)9MXE START−UP CHECK SHEET For ECM Models (F/G)9MXE (This sheet is optional. Keep for future reference.) Date of Start−Up: Calculated Input (BTU) Rate: (See Checks and Adjustments Section). Dealer Name: Heating Check Address: Measured Line Pressure During Heat: City, State(Province), Zip or Postal Code: Measured Manifold Pressure: Heat...
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Page 4: Start−Up, Adjustment, And Safety Check
SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE START−UP, ADJUSTMENT, AND SAFETY 2. Connect field-supplied 5/8-in. (16 mm) ID tube with attached funnel (see Figure 1) to upper collector box CHECK drain connection. 3. Pour one quart (liter) of water into funnel/tube. Water NOTICE should run through collector box, overfill condensate trap, and flow into open field drain. - Page 5 SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE Adjustments Table 1 Altitude Derate Multiplier for U.S.A. ALTITUDE PERCENT DERATE MULTIPLIER WARNING FT. (M) OF DERATE FACTOR* 0–2000 1.00 (0−610) FIRE HAZARD 2001–3000 4−6 0.95 Failure to follow this warning could result in personal injury, (610−914) death and/or property damage.
- Page 6 SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE Check Inlet Gas Pressure Redundant Automatic Gas Valve Figure 3 (Single Stage) The inlet gas pressure must be checked with the furnace operating in maximum heat. This is necessary to make sure the ON/OFF Switch inlet gas pressure does not fall below the minimum pressure of 4.5 in.
- Page 7 SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE Figure 4 Example of Single Stage Furnace Control for ECM Blower Motor HEAT OFF−DELAY 24−V THERMOSTAT TERMINALS TWINNING AND/OR COMPONENT TEST TERMINAL 24VAC HUMIDIFIER TERMINAL (24−VAC 0.5 AMP MAX) TRANSFORMER 24VAC CONNECTIONS 3−AMP FUSE P1 −...
- Page 8 SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE Table 2 Gas Rate (CU ft./hr) SIZE OF TEST DIAL SIZE OF TEST DIAL SECONDS SECONDS FOR 1 REVOLUTION FOR 1 REVOLUTION 1 Cu Ft. 2 Cu Ft. 5 Cu Ft. 1 Cu Ft. 2 Cu Ft.
- Page 9 SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE Table 3 Orifice Size and Manifold Pressure (in. w.c.) for Gas Input Rate − Single Stage SINGLE-STAGE FURNACE (TABULATED DATA BASED ON 20,000 BTUH PER BURNER, DERATED 2%/1000 FT (305M) ABOVE SEA LEVEL) ALTITUDE RANGE HEAT VALUE...
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Page 10: Adjust Temperature Rise
SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE Table 3 (CONT.) Orifice Size and Manifold Pressure (in. w.c.) for Gas Input Rate − Single Stage SINGLE-STAGE FURNACE (TABULATED DATA BASED ON 20,000 BTUH PER BURNER, DERATED 2%/1000 FT (305M) ABOVE SEA LEVEL) ALTITUDE RANGE HEAT VALUE... -
Page 11: Adjust Blower Off Delay (Heat Mode)
SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE Change the blower speed taps as required to maintain proper Figure 5 Amp. Draw Check with Ammeter temperature rise for Heating and Cooling as described above. To change blower motor speed selections for heating mode, THERMOSTAT SUBBASE remove blower motor lead from control HEAT terminal(s). - Page 12 SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE Table 5 COOLING AIR DELIVERY - CFM (With Filter EXTERNAL STATIC PRESSURE (IN.W.C.) UNIT RETURN-AIR SPEED SIZE CONNECTION TAPS Gray 1120 1080 1030 Yellow 0401410 SIDE/BOTTOM Blue Orange Gray 1255 1220 1175 1130 1085 1040...
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Page 13: Checklist
SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE Checklist WARNING 1. Put away tools and instruments. Clean up debris. 2. Verify that the jumper is removed from the TEST/TWIN ELECTRICAL SHOCK, FIRE OR EXPLOSION terminal. Verify that there is nothing plugged into the PLT HAZARD connector. -
Page 14: Retrieving Stored Fault Codes
SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE wiring during installation, service, or maintenance will cause WARNING this fuse to blow. If fuse replacement is required, use ONLY a 3−amp. fuse. The control LED display will be off when fuse ELECTRICAL SHOCK HAZARD needs to be replaced. -
Page 15: Component Self−Test
SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE Care and Maintenance 6. A component test sequence will follow. Reinstall the Main/Control door. WARNING Component Self−Test NOTE: The furnace control component test allows all FIRE OR EXPLOSION HAZARD components to run for a short time; except the gas valve and humidifier terminal HUM 24 VAC are not energized. -
Page 16: Cleaning And/Or Replacing Air Filter
SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE 4. Inspect burner compartment before each heating season b. Separate the pipes from the couplings and move for rust, corrosion, soot or excessive dust. If necessary, them aside. have furnace and burner serviced by a qualified service c. - Page 17 SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE f. After servicing the blower, reverse steps a through e. Figure 8 Blower Assembly g. Tighten all clamps 15 lb−in. MOTOR SHAFT FLAT See Figure 8 for steps 5 through 14. 5. Remove screws securing blower assembly to blower shelf and slide blower assembly out of furnace.
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Page 18: Cleaning Burners And Flame Sensor
SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE 15. Reconnect blower leads to furnace control. Refer to 5. Disconnect the gas pipe from gas valve and remove pipe furnace wiring diagram, and connect thermostat leads if from the furnace casing. previously disconnected. -
Page 19: Servicing Hot Surface Igniter
SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE 8. Check the igniter alignment. See Figure 9, Figure 10 Servicing Hot Surface Igniter and Figure 11. The igniter does NOT require annual inspection. Check igniter resistance before removal. Refer to Figure 9, Figure 10 and Figure 10 Igniter Position −... -
Page 20: Cleaning Condensate Drain And Trap
SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE NOTE: Do NOT blow into tube with tube connected to the NOTE: The Heat Pad, when used, should be wrapped around pressure switch. the condensate drain trap. There is no need to use heat tape within the furnace casing. -
Page 21: Winterization
SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE 8. Reverse items 6 through 1 for reassembly. Since the furnace uses a condensing heat exchanger, some water will accumulate in the unit as a result of the heat transfer 9. Refer to furnace wiring diagram and reconnect wires to process. -
Page 22: Service Label
SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE Figure 14 Service Label 338312−2 Rev F 440 04 4311 08 Specifications subject to change without notice. -
Page 23: Wiring Diagram
SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE Figure 15 Wiring Diagram 338312−2 Rev F 440 04 4311 08 Specifications subject to change without notice. -
Page 24: Troubleshooting Guide − Flow Chart
SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE Figure 16 Troubleshooting Guide − Flow Chart 440 04 4311 08 Specifications subject to change without notice. - Page 25 SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE Figure 16 (Cont.) Troubleshooting Guide − Flow Chart 440 04 4311 08 Specifications subject to change without notice.
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Page 26: Sequence Of Operation
SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE SEQUENCE OF OPERATION 1 AMP is energized and remains energized as long as the blower motor BLWM is energized. NOTE: Furnace control must be grounded for proper operation f. Heat−Off Delay− When the thermostat is satisfied, the or control will lock out. - Page 27 SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE applies to operation with a humidity sensing thermostat. 5. Heat pump The exceptions are listed below: (See Figure 17 − Figure 23 for thermostat connections.) When installed with a heat pump, the furnace control a.
- Page 28 SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE ECM Single−Stage Furnace with Single ECM Single−Stage Furnace with Figure 17 Figure 19 Stage Air Conditioner Two−Stage Heat Pump (Dual Fuel) NOTE 9 NOTE 9 ECM Single−Stage Furnace with Figure 18 Two−Stage Air Conditioner ECM Single−Stage Furnace with Figure 20 Single−Stage Heat Pump (Dual Fuel)
- Page 29 SERVICE AND TECHNICAL SUPPORT MANUAL Gas Furnace: (F/G)9MXE ECM Single−Stage Furnace and HP with ECM Single−Stage Furnace, Figure 21 Figure 23 Humidifier Only Humidifier and Dehumidification AC with ECM Single−Stage Furnace, Figure 22 Humidifier and Dehumidification See notes 5 and 6 NOTES FOR Figure 17 −...
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Page 30: Parts Replacement Information Guide
TO OBTAIN INFORMATION ON PARTS: Consult your installing dealer or the classified section of your local telephone directory under the “Heating Equipment“ or “Air Conditioning Contractors and Systems” headings for dealer listing by brand name. International Comfort Products Consumer Relations Department P.O. -
Page 31: Product Nomenclature
16 = 1600 CFM (max) 20 = 2000 CFM (max) 22 = 2200 CFM (max) COOLING AIRFLOW SALES (MAJOR) REVISION DIGIT ENGINEERING (MINOR) REVISION DIGIT 440 04 4311 08 Specifications subject to change without notice. Copyright 2013 International Comfort Products...