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INSTALLATION INSTRUCTIONS
35" Tall, High Efficiency Condensing Gas Furnace
These instructions must be read and understood completely before attempting installation.
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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Portions of the text and tables are reprinted from NFPA 54 /ANSI Z223.1−2012©, with permission of National Fire Protection Association, Quincy, MA 02269 and American Gas Association, Washington, DC
20001. This reprinted material is not the complete and official position of the NFPA or ANSI, on the referenced subject, which is represented only by the standard in its entirety.
Printed in U.S.A.
Variable Speed Motor, Two−Stage
(F/G)9MVE 'A3' Series
Safety Labeling and Signal Words
DANGER,
WARNING,
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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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INSTALLER: Affix these instructions on or adjacent to the
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furnace.
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CONSUMER:
Retain
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reference.
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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 .
these
instructions
440 01 4401 02
8/7/2015
for
future
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Table of Contents
Related Manuals for International comfort products G9MVE A3 Series
Summary of Contents for International comfort products G9MVE A3 Series
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Page 1: Table Of Contents
INSTALLATION INSTRUCTIONS Variable Speed Motor, Two−Stage 35” Tall, High Efficiency Condensing Gas Furnace (F/G)9MVE ’A3’ Series These instructions must be read and understood completely before attempting installation. Safety Labeling and Signal Words DANGER, WARNING, CAUTION, and NOTE Signal Words in Manuals signal words DANGER,... - Page 2 Required Notice for Massachusetts Installations Important The Commonwealth of Massachusetts requires compliance with regulation 248 CMR as follows: 5.08: Modifications to NFPA−54, Chapter 10 2) Revise 10.8.3 by adding the following additional requirements: (a) For all side wall horizontally vented gas fueled equipment installed in every dwelling, building or structure used in whole or in part for residential purposes, including those owned or operated by the Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet above finished grade in the area of the venting, including but not limited to decks and porches, the following requirements shall be satisfied: INSTALLATION OF CARBON MONOXIDE DETECTORS.
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Page 3: Safety Considerations
INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Safety Considerations Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit. CAUTION WARNING CUT HAZARD FIRE, EXPLOSION, ELECTRICAL SHOCK, AND CARBON MONOXIDE POISONING HAZARD Failure to follow this caution may result in personal injury. Failure to follow this warning could result in dangerous Sheet metal parts may have sharp edges or burrs. -
Page 4: Introduction
INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE (914 mm) horizontally from the furnace. See NFPA 90B furnace may cause the furnace and/or vent to fail prematurely, or local code for further requirements. customer discomfort and/or vent freezing. Failure to follow these guidelines is considered faulty Minimum Clearances to Table 1 installation and/or misapplication of the furnace;... -
Page 5: Electrostatic Discharge Precautions Procedure
INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Combustion and Ventilation Air Disconnect all power to the furnace. Multiple disconnects may be required. DO NOT TOUCH THE US: Section 9.3 of the NFPA54/ANSI Z223.1−2012, CONTROL OR ANY WIRE CONNECTED TO THE Air for Combustion and Ventilation CONTROL PRIOR TO DISCHARGING YOUR BODY’S CANADA: Part 8 of the CAN/CSA B149.1−2010, ELECTROSTATIC CHARGE TO GROUND. -
Page 6: Dimensions
INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Figure 2 Dimensions SD5060−4 Rev H (F/G)9MVE CABINET BOTTOM SHIP WT. WIDTH OUTLET WIDTH INLET WIDTH AIR INTAKE FURNACE SIZE LB (KG) 0401410 14−3/16 (361) 12−1/2 (319) 12−9/16 (322) 7−1/8 (181) 121 (54) 0401712 17−1/2 (445) 15−7/8 (403) 16 (406) 8−3/4 (222) -
Page 7: Location
INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Location • be located close to the chimney or vent and attached to an air distribution system. Refer to Air Ducts section. CAUTION • be provided ample space for servicing and cleaning. Always comply with minimum fire protection clearances shown in Table 1 or on the furnace clearance to combustible construction label. -
Page 8: Location Relative To Cooling Equipment
INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Figure 3 Multipoise Orientations THE BLOWER IS LOCATED BELOW THE BURNER SECTION, AND CONDITIONED AIR IS DISCHARGED UPWARD. THE BLOWER IS LOCATED TO THE RIGHT OF THE BURNER SECTION, AND CONDITIONED AIR IS DISCHARGED TO THE LEFT. THE BLOWER IS THE BLOWER IS LOCATED TO THE LEFT... -
Page 9: Air For Combustion And Ventilation
INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Air for Combustion and WARNING Ventilation CARBON MONOXIDE POISONING HAZARD Introduction Failure to follow this warning could result in personal Direct Vent (2−pipe) Applications injury or death. The operation of exhaust fans, kitchen ventilation fans, When the furnace is installed as a direct vent (2-pipe) furnace, clothes dryers, attic exhaust fans or fireplaces could no special provisions for air for combustion are required. - Page 10 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Indoor Combustion Air NFPA & AGA b. Combining spaces on same floor level. Each opening © shall have free area of at least 1-in. /1,000 Btuh Standard and Known-Air-Infiltration Rate (2,000 mm /kW) of the total input rating of all gas Methods appliances in the space, but not less than 100-in.
- Page 11 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Table 3 Minimum Free Area Required for Each Combustion Air Opening or Duct to Outdoors TWO OPENINGS OR TWO HORIZONTAL DUCTS SINGLE DUCT OR OPENING VERTICAL DUCTS (1 SQ. IN./2,000 BTUH) (1 SQ. IN./3,000 BTUH) (1 SQ.
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Page 12: Condensate Trap
INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Condensate Trap − Upflow Orientation image in Figure 9. When the furnace is installed in the downflow orientation, the condensate trap must be relocated When the furnace is installed in the upflow position, it is not for proper condensate drainage. - Page 13 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Downflow Trap Configuration Connect the new pressure switch tube from Loose Parts bag to Route tube through inducer port on front pressure switch. stand−offs to adjust position of the tube. Trim excess tube. Connect pressure switch tube to port on collector Install the two plugs box.
- Page 14 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Figure 10 Unconverted Factory Configuration as viewed in the Horizontal Right Orientation Remove plug from If alternate vent position collector box. is required, loosen clamp DO NOT DISCARD. on inlet of vent elbow. Remove the screw that secures the trap to the collector box and remove trap.
- Page 15 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Figure 11 Unconverted Factory Configuration as viewed in the Horizontal Left Orientation Remove the screw that secures the condensate trap to the collector box If alternate vent position and remove trap. is required, loosen clamp on vent elbow inlet.
- Page 16 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Condensate Drain Connection c. All condensate piping is at least 1/2 in. PVC and there is a relief tee at the top of condensate drain piping as shown below: CAUTION NOTE: On narrower casings, it may be easier to remove the condensate trap, connect the drain line components and FROZEN AND BURST WATER PIPE HAZARD re-install the condensate trap.
- Page 17 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE For Left Side Condensate Drain Connection: 16. Open the spring clamp and insert the long end of the adapter or the 1/2−in. CPVC pipe into the outlet stub on 1. For left side condensate drainage, the drain line is routed the drain elbow.
- Page 18 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Example of Field Drain Attachment Figure 14 Example of Field Drain Attachment Figure 13 (NOT ALLOWED) Open standpipe for coil or humidifier drain Ä Ä Ä Ä Ä Ä Ä Ä Ä Evaporator Coil + + + Ä...
- Page 19 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Example of Field Drain Attachment cont. Figure 17 Drain Trap Connection and Routing Attach elbow to condensate trap Evaporator Coil Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Open standpipe Ä...
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Page 20: Installation
INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE INSTALLATION when bottom return air is used. To remove bottom closure panel, perform the following: Tilt or raise furnace and remove four (4) screws holding NOTICE bottom plate. (See Figure 20) Remove bottom plate. Remove bottom closure panel. This furnace is certified to leak 2% or less of nominal air con- Reinstall bottom plate and screws. -
Page 21: Downflow Installation
INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE CAUTION NOTE: Bottom closure must be used when leveling legs are used. It may be necessary to remove and reinstall bottom closure panel to install leveling legs. To remove bottom closure CUT HAZARD panel, see Step 1 in Bottom Return Air Inlet section. Failure to follow this caution may result in personal injury. - Page 22 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE CAUTION Suspended Furnace Support The furnace may be supported under the entire length of the MINOR PROPERTY HAZARD furnace with threaded rod and angle iron. (See Figure 26) Secure angle iron to bottom of furnace as shown. Failure to follow this caution may result in minor property Platform Furnace Support damage.
- Page 23 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Table 5 Opening Dimensions − in. (mm) FURNACE PLENUM OPENING FLOOR OPENING CASING WIDTH APPLICATION IN. (mm) 12−11/1 Upflow Applications on Combustible or Noncombustible Flooring 21−5/8 13−5/16 22−1/4 (subbase not required) (549) (338) (565) (322) Downflow Applications on Noncombustible Flooring 12−9/16 13−3/16...
- Page 24 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Figure 26 Suspended Furnace Installation COMBUSTION − AIR PIPE (SEE VENTING SECTION) 2−in. (51 mm) A11155 NOTE: Local codes may require a drain pan and condensate trap when a condensing furnace is installed over a finished ceiling.
- Page 25 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Roll−Out Protection side and bottom of the furnace. (See Figure 29, Figure 32, and Figure 31) Provide a minimum 12−in. x 22−in. (305 x 559 mm) piece of For downflow applications, the filter rack (or field supplied sheet metal for flame roll−out protection in front of burner area accessory air cleaner) must only be connected to the bottom for furnaces closer than 12−in.
- Page 26 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Table 7 Filter Media Pressure Drop (Clean) Versus Airflow - in. w.c. (Pa) Representative After-Market Filter Media* Factory-Accy Fiberglass* Pleated* 14 x 25 Filter Washable (1-in. / 2.5 cm) (1-in. / 2.5 cm) (2-in. / 5 cm) (1-in.
- Page 27 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE External Filter Cabinet Configurations Downflow Return Air Figure 28 Configurations and Restrictions Figure 31 Accessory Bottom Filter Rack L10F033 Upflow Return Air Configurations Figure 29 and Restrictions L10F031 22−5/16 (566.4) 28−7/16 (722.2) L10F032 Horizontal Return Air Figure 30 Configurations and Restrictions HORIZONTAL TOP...
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Page 28: Air Ducts
INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Systems Design Guidelines reference tables available from Figure 32 Accessory Side Filter Rack your local distributor. The duct system should be sized to handle the required system design CFM at the design external static pressure. The furnace airflow rates are provided in the Service and Technical Support Manual. - Page 29 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE WARNING Table 10 Maximum Capacity of Pipe NOMINAL LENGTH OF PIPE − FT (M) INTERNAL FIRE OR EXPLOSION HAZARD IRON PIPE DIA. SIZE Failure to follow this warning could result in personal IN. (MM) (3.0) (6.0) (9.1) (12.1)
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Page 30: Electrical Connections
INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE ELECTRICAL CONNECTIONS Redundant Automatic Gas Valve Figure 34 (Two−Stage) WARNING ON/OFF Switch Regulator Seal Cap ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD Regulator Adjustment Failure to follow safety warnings could result in dangerous Regulator Seal Cap under Cap 1/2”... -
Page 31: J−Box Installation
INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE by this equipment. Refer to rating plate or Table 11 for equipment electrical specifications. U.S.A. Installations: Make all electrical connections in accordance with the current edition of the National Electrical Code (NEC) NFPA 70 and any local codes or ordinances that SWITCH might apply. - Page 32 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Pull furnace power wires through 1/2-in. (12 mm) Figure 37 Optional J−Box Locations diameter hole in J−Box. If necessary, loosen power wires from strain−relief wire-tie on furnace wiring harness. Connect any code required external disconnect(s) to field power wiring.
- Page 33 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE BX Cable Installation in Furnace J−Box configuring the furnace control board. Consult the thermostat installation instructions specific information about 1. Install J−Box mounting bracket to inside of furnace configuring the thermostat. casing. Accessories 2. Route BX connector through 7/8−in. (22 mm) diameter (See Figure 40 and Figure 41) hole in casing and J−Box bracket.
- Page 34 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Figure 40 Isolation Relay for Humidifiers with Internal Power Supply To HUM 24 VAC Terminal To Humidifier Leads On Furnace Control Board 24 V Coil To Humidifier Leads To Com/24V Screw Terminal on Thermostat Strip A11157 Figure 41 Example of Variable Speed Furnace Control for Variable Speed ECM Blower Motor...
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Page 35: Venting
INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE VENTING ’apprêt et le ciment d’un manufacturier avec un système d’évacuation d’un manufacturier différent. NOTE: Planning for the venting system should be done in Bien suivre les indications du manufacturier lors de l’utilisation conjunction with planning for the ductwork, drainage, and de l’apprêt et du ciment et ne pas utiliser ceux-ci si la date furnace accessories, such as air cleaners and humidifiers. - Page 36 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE General NOTICE If this furnace replaces a furnace that was connected to a vent system or chimney, the vent or vent connectors of other RECOMMENDED SUPPORT VENT remaining appliances may need to be re−sized. Vent systems TERMINATIONS or vent connectors of other appliances must be sized to the minimum size as determined using appropriate table found in...
- Page 37 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE WARNING combustion for a single pipe vent system. Refer to the “Air For Combustion and Ventilation Section.” Provisions for adequate combustion, ventilation, and dilution air CARBON MONOXIDE POISONING HAZARD must be provided in accordance with: Failure to follow the instructions outlined in Locating Non-Direct Vent (1-pipe) System the Vent Termination for each appliance being placed...
- Page 38 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Locating the Vent Termination Vent Coupling and Adapter with Figure 42 Gaskets General NOTE: Termination Requirements for the Provinces of Alberta and Saskatchewan are located at the end of this section. Combustion−air inlet pipe (Direct Vent/2−Pipe system only) and vent pipe must terminate outside structure, either through sidewall or roof.
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Page 39: Direct Vent / 2−Pipe System
INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Non−Direct Vent / 1−Pipe System 3. All other clearance requirements are met Example: The vent pipe for a Non Direct Vent (1−pipe) system must 1. The length of wall “A” is 15−ft and the length of wall “B” is terminate outdoors. - Page 40 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Figure 46 Tee at Termination Outlet Figure 48 Vent Terminations OPTIONAL TERMINATION BRACKET FOR 2-PIPE TERMINATIONS OPTIONAL BRACKET COUPLING 12 IN. (305 MM) MIN. SEPARATION 12 IN. (305 MM) MIN. BETWEEN BOTTOM OF SEPARATION BETWEEN COMBUSTION AIR AND BOTTOM OF COMBUSTION BOTTOM OF VENT.
- Page 41 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Figure 49 Combustion Air and Vent Pipe Termination for Direct Vent (2−Pipe) System Roof Termination (Preferred) Note: 36−in. separation between pairs of inlets only required for direct−vent systems Note: Vertical separation between At least 36 in. “A”...
- Page 42 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Size the Vent and Combustion Air Pipes Combustion Air Inlet Moisture Trap General To prevent moisture from trickling into the furnace vestibule, a trap can be installed in the intake air pipe near the furnace. Connecting a drain line to the trap is recommended as trace Approved 2−pipe termination fittings...
- Page 43 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE To calculate the Total Equivalent Vent Length (TEVL) of the pipe chosen, then that diameter of pipe selected may be used. venting system: 1. Measure the individual distance from the furnace to the b. If the Total Vent Length is longer than the Maximum termination for each pipe.
- Page 44 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Install the Vent and Combustion Air Pipes 6. Install the insulation per the insulation manufacturer’s installation instructions. With the furnace installed in the required position, remove the NOTE: Pipe length (ft / M) specified for maximum pipe lengths desired knockouts from the casing.
- Page 45 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Figure 55 Upflow Configurations Figure 56 Downflow Configurations UPFLOW LEFT − VENT CONFIGURATION Representative drawing only, some models may vary in appearance. A11309 DOWNFLOW LEFT − VENT CONFIGURATION Representative drawing only, some models may vary in appearance. A11311 UPFLOW RIGHT −...
- Page 46 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Figure 57 Horizontal Left Configurations Figure 58 Horizontal Right Configurations HORIZONTAL LEFT − VERTICAL VENT CONFIGURATION Representative drawing only, some models may vary in appearance. HORIZONTAL RIGHT − VERTICAL VENT CONFIGURATION Representative drawing only, some models may vary in appearance. HORIZONTAL LEFT −...
- Page 47 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE NOTES: NOTICE 1. Attach vent pipe adapter with gasket to furnace casing. 2. Align notches in rubber coupling over standoffs on The following instructions are for PVC/ABS DWV vent piping, adapter. Slide clamps over the coupling. only.
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Page 48: Installing The Vent Termination
INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE CAUTION 13. Pilot drill a 1/8−in. hole in the combustion air pipe adapter. 14. Complete the vent and combustion air pipe as shown in FURNACE RELIABILITY HAZARD “Install the Vent and Combustion Air Pipe” Failure to follow this caution may result in nuisance short NOTICE cycling, frozen vent termination, and/or no heat. - Page 49 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE WARNING 3. Slide assembled kit with rain shield REMOVED through hole. NOTE: Do not allow insulation or other materials to accumulate CARBON MONOXIDE POISONING HAZARD inside of pipe assembly when installing it through hole. Failure to follow this warning could result in personal injury or 4.
- Page 50 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Figure 60 Crawl Space Vent Termination Ventilated Combustion Air intake pipe Pipe hangar 3” (76 mm) 12” (305 mm) Ventilated Combustion Air intake termination in crawl space CRAWL SPACE L11F016A Figure 61 Attic Vent Termination Ventilated Combustion Air intake pipe Vent through...
- Page 51 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Figure 62 Direct Vent Termination Clearance 25−24−65−2 NOTE: The following is based upon National codes for gas appliances, and is provided as a reference. Refer to Local codes which may supersede these standards and/or recommendations. (1 ) (2 ) Canadian Installations...
- Page 52 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Figure 63 Other than Direct Vent Clearance − Ventilated Combustion Air Option 25−24−65−2 NOTE: The following is based upon National codes for gas appliances, and is provided as a reference. Refer to Local codes which may supersede these standards and/or recommendations. (1 ) (2 ) Canadian Installations...
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Page 53: Maximum Equivalent Vent Length
INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Table 14 MAXIMUM EQUIVALENT VENT LENGTH - Feet (Meters) Note: Maximum Equivalent Vent Length (MEVL) does NOT include elbows or terminations Use Table 15 − DEDUCTIONS FROM MEVL to determine allowable vent length for each application. 40,000 Outlet choke Unit Size... - Page 54 INSTALLATION INSTRUCTIONS Gas Furnace: (F/G)9MVE Venting System Length Calculations The Total Equivalent Vent Length for EACH combustion air or vent pipe equals the length of the venting system, plus the equivalent length of elbows used in the venting system from Table 15. Standard vent terminations or factory accessory concentric vent terminations count for zero deduction.
- Page 55 19.8 15.2 19.8 15.2 19.8 18.3 Design 10.7 13.7 13.7 15.2 12.2 Temp °C 40 Not all families have these models Copyright 2015 International Comfort Products Lewisburg, TN 37091 USA Specifications subject to change without notice. 440 01 4401 02...