International comfort products B Series Installation Instructions Manual
Single−stage, psc blower motor 35" tall, high efficiency condensing gas furnace
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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.
Single−Stage, PSC Blower Motor
N9MSB (B 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 4102 01
March. 2013
for
future
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Table of Contents
Related Manuals for International comfort products B Series
Summary of Contents for International comfort products B Series
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Page 1: Table Of Contents
INSTALLATION INSTRUCTIONS Single−Stage, PSC Blower Motor 35” Tall, High Efficiency Condensing Gas Furnace N9MSB (B 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... - 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: N9MSB Safety Considerations changing residential construction practices. We require these instructions as a minimum for a safe installation. Follow all safety codes. Wear safety glasses, protective WARNING clothing, and work gloves. Have a fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit. -
Page 4: Introduction
INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB accessory gas conversion kit is required to convert NOTE: Remove all shipping materials, parts assemblies and furnace for use with propane gas. literature before operating the furnace. See Table 1 for required clearances to combustible Freeze Protection and Return Air construction. -
Page 5: Electrostatic Discharge Precautions Procedure
INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB 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 NFPA 54/ANSI Z223.1−2012, CONTROL OR ANY WIRE CONNECTED TO THE CONTROL PRIOR TO DISCHARGING YOUR BODY’S Air for Combustion and Ventilation ELECTROSTATIC CHARGE TO GROUND. -
Page 6: Dimensions
INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Figure 2 Dimensions SD5060−4 Rev F N9MSB SHIP WT. CABINET BOTTOM LB (KG) FURNACE SIZE OUTLET WIDTH AIR INTAKE WIDTH INLET WIDTH 0401410 14−3/16 (361) 12−1/2 (319) 12−9/16 (322) 7−1/8 (181) 121 (55) 0401712 14−3/16 (361) 12−1/2 (319) 12−9/16 (322) 7−1/8 (181) -
Page 7: Location
INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Location • not be installed directly on any combustible material other than wood flooring (refer SAFETY CONSIDERATIONS). CAUTION be located close to the chimney or vent and attached to an • air distribution system. Refer to Air Ducts section. •... - Page 8 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB 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...
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Page 9: Location Relative To Cooling Equipment
INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Location Relative to Cooling CAUTION Equipment FURNACE CORROSION HAZARD The cooling coil must be installed parallel with, or on the Failure to follow this caution may result in furnace downstream side of the unit to avoid condensation in the heat damage. - Page 10 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB ONE OUTDOOR OPENING requires: The Standard Method: a. 1 sq. in. (25.4 square mm)of free area per 3,000 Btuh The space has no less volume than 50 cubic feet per (734 mm /kW) for combined input of all gas 1,000 Btuh (4.8 cubic meters per kW) of the maximum appliances in the space per Table 3 and input ratings for all gas appliances installed in the space...
- Page 11 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB In spaces that use the Indoor Combustion Air Method, Air for Combustion, Ventilation, Figure 7 infiltration should be adequate to provide air for and Dilution from Indoors combustion, permanent ventilation and dilution of flue gases. However, in buildings with unusually tight construction, additional air MUST be provided using the methods described in the Outdoor Combustion Air Method...
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Page 12: Condensate Trap
INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Table 4 Minimum Space Volumes for 100% Combustion, Ventilation and Dilution Air from Outdoors OTHER THAN FAN-ASSISTED TOTAL FAN-ASSISTED TOTAL (1,000’S BTUH GAS INPUT RATE) (1,000’S BTUH GAS INPUT RATE) Space Volume Ft 1,050 1,400 1,750 1,400 1,500... - Page 13 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Figure 9 Unconverted Factory Configuration as viewed in the Downflow Orientation Remove pressure switch tube from front pressure switch and discard. A new tube is shipped in the loose parts bag. Remove relief tube from relief Remove tube from relief port.
- Page 14 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Condensate Trap − Horizontal NOTICE Orientation The condensate trap extends below the side of the When the furnace is installed in the horizontal right position, the casing in the horizontal position. A minimum of 2-in. condensate trap will be initially located at the bottom of the (51 mm) of clearance is required between the casing collector box, as received from the factory.
- Page 15 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Horizontal Right Trap Configuration (CONTINUED) NOTE: Remove knockout in casing before re−installing the condensate trap. Slide relief tube in stand−offs to adjust length. Vent elbow shown in alternate Attach condensate orientation. Tighten clamp on trap with screw to inlet to vent elbow 15 lb.−in.
- Page 16 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Horizontal Left Trap Configuration (CONTINUED) NOTE: Remove knockout in casing before re−installing the Install two plugs previously condensate trap. removed in open ports on Rotate elbow to collector box. desired position and torque clamp Connect relief tube to port on inlet 15 lb.−in.
- Page 17 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB building codes. A factory−supplied 1/2−in. CPVC to 3/4−in PVC 6. From the outside of the casing, insert the angled end of adapter is supplied in the loose parts bag for use as required. the ”Z” pipe through drain hole in the left side of the casing and behind the inducer or gas valve.
- Page 18 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB 2. To allow for servicing the trap, the condensate drain Figure 14 Modify Rubber Drain Elbow elbow in the loose parts bag can be used to make a Cut line for left side condensate drain. coupler to allow for future service of the condensate trap Do not discard parts after cutting.
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Page 19: Installation
INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Figure 16 Formed Rubber Drain Grommet Figure 18 Furnace Pitch Requirements INSTALL CLAMPS ON DRAIN ELBOW LEVEL 0-IN. (0 MM) TO ATTACH DRAIN ELBOW TO CONDENSATE 1/2-IN. (13 MM) MAX DRAIN TRAP PULL DRAIN STUB MIN 1/4-IN. -
Page 20: Downflow Installation
INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Install another nut on other side of furnace base. (Install Figure 19 Removing Bottom Closure Panel flat washer if desired.) Adjust outside nut to provide desired height, and tighten inside nut to secure arrangement. Reinstall bottom closure panel if removed. DOWNFLOW INSTALLATION NOTE: The furnace must be pitched as shown in Figure 18 for proper condensate drainage. - Page 21 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB subbase, or a factory−approved air conditioning coil casing. DO The return−air duct must be connected to return−air opening NOT cut main furnace casing to attach supply side air duct, (bottom inlet) as shown in Figure 27. DO NOT cut into casing humidifier, or other accessories.
- Page 22 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Table 5 Opening Dimensions − in. (mm) FURNACE PLENUM OPENING FLOOR OPENING CASING WIDTH APPLICATION IN. (mm) Upflow Applications on Combustible or Noncombustible Flooring 12−11/16 21−5/8 13−5/16 22−1/4 (subbase not required) (322) (549) (338) (565) Downflow Applications on Noncombustible Flooring 12−9/16 13−3/16...
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Page 23: Horizontal Installation
INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Bottom Return Air Inlet CAUTION These furnaces are shipped with bottom closure panel installed in bottom return−air opening. Remove and discard this panel MINOR PROPERTY HAZARD when bottom return air is used. To remove bottom closure Failure to follow this caution may result in minor property panel, perform the following: damage. -
Page 24: Filter Arrangement
INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Figure 26 Working Platform for Attic Installation COMBUSTION − AIR PIPE (SEE VENTING SECTION) 2−in. (51 mm) ROLLOUT PROTECTION RE- QUIRED Install 1.2” x 22” (305 x 559 mm) sheet metal in front of burner compartment area. - Page 25 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Furnaces shipped without a filter rack: Filter and Return Duct Sizing There are no provisions for an internal filter in these furnaces. Pressure drop must be taken into account when sizing filters, An external filter rack is required and is purchased separately. filter racks, IAQ devices, and associated system ductwork.
- Page 26 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB 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: N9MSB External Filter Cabinet Configurations Downflow Return Air Figure 27 Configurations and Restrictions Figure 30 Accessory Bottom Filter Rack L10F033 Upflow Return Air Configurations Figure 28 and Restrictions L10F031 22−5/16 (566.4) 28−7/16 (722.2) L10F032 Horizontal Return Air Figure 29 Configurations and Restrictions HORIZONTAL TOP...
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Page 28: Air Ducts
INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Systems Design Guidelines reference tables available from Figure 31 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: N9MSB WARNING Table 10 Maximum Capacity of Pipe NOMINAL LENGTH OF PIPE − FT (M) INTERNAL IRON PIPE FIRE OR EXPLOSION HAZARD DIA. SIZE IN. (MM) (3.0) (6.0) (9.1) (12.1) (15.2) Failure to follow this warning could result in personal IN.
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Page 30: Electrical Connections
INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB ELECTRICAL CONNECTIONS Figure 33 Gas Valve − Single Stage ON/OFF Switch WARNING 1/2” NPT Inlet ELECTRICAL SHOCK HAZARD Regulator Seal Cap Failure to follow this warning could result in personal Regulator Adjustment Regulator Seal Cap under Cap injury or death. -
Page 31: J−Box Installation
INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB WARNING FIRE HAZARD Failure to follow this warning could result in personal SWITCH COPPER injury, death, or property damage. WIRE ONLY Do not connect aluminum wire between disconnect switch and furnace. Use only copper wire. ALUMINUM WIRE A11146... - Page 32 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Figure 37 J−Box Bracket Installation Field−Supplied Electrical Box on Figure 38 Furnace Casing J−BOX MOUNTING SCREWS J−BOX MOUNTING BRACKET GROUND NEUTRAL LINE VOLTAGE GROUND SCREW J−BOX COVER L12F025 A10141 Remove the J−Box cover and mounting bracket from the loose Power Cord Installation in Furnace J−Box parts bag.
- Page 33 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB NOTE: Use AWG No. 18 color-coded copper thermostat wire terminal on the control board thermostat strip. The for lengths up to 100 ft. (30.5 M). For wire lengths over 100 ft., HUM 24VAC terminal is energized when there is a call use AWG No.
- Page 34 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Figure 39 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 C Screw Terminal on Thermostat Strip A11157 Figure 40 Example of Single Stage Furnace Control for PSC Blower Motor...
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Page 35: Venting
INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB VENTING PVC/CPVC, Purple pour évacuation des gaz de combustion et système IPEX 636(1)t, ciment PVC pour évacuation des gaz NOTE: Planning for the venting system should be done in de combustion, coté classe IIA, 65 deg C. doivent être utilisés conjunction with planning for the ductwork, drainage, and avec le système d’évacuation IPEX 636 –... - Page 36 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB General Venting Systems If this furnace replaces a furnace that was connected to a vent WARNING system or chimney, the vent or vent connectors of other remaining appliances may need to be re−sized. Vent systems or vent connectors of other appliances must be sized to the CARBON MONOXIDE POISONING HAZARD minimum size as determined using appropriate table found in...
- Page 37 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB attenuation. To aid sound attenuation, point the inlet air pipe NOTICE away from occupants. An extra elbow and/or five feet (1.5 M) of pipe may be used to accomplish the sound attenuation OPTIONAL CONFIGURATION FOR COMBUSTION function.
- Page 38 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Table 13 Approved Combustion-Air and Vent Pipe, Fitting and Cement Materials (U.S.A. Installation) ASTM SPECIFICATION SOLVENT CEMENT AND MATERIAL PIPE FITTINGS DESCRIPTION (MARKED ON PRIMERS MATERIAL) Pipe − − Schedule−40 D1527 Pipe − − Schedule−40 D1785 For ABS −...
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Page 39: Direct Vent / 2−Pipe System
INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Locating the Vent Termination WARNING General CARBON MONOXIDE POISONING HAZARD NOTE: Termination Requirements for the Provinces of Failure to follow the instructions outlined below for Alberta and Saskatchewan are located at the end of this each appliance being placed into operation could result section. - Page 40 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB permitted) that re-directs the flue gas away by use of an elbow Figure 46 Vent Terminations or tee, certified to ULC S636 from the adjacent property line must be used. (See Figure 44 and Figure 46) The concentric vent kit currently cannot be modified to attach an elbow to the vent portion of the rain cap.
- Page 41 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Figure 47 Combustion Air and Vent Pipe Termination for Direct Vent (2−Pipe) System ¾ ¾ 12 in. (305mm) min. separation between bottom of combustion air and bottom of vent (Typ.) A13077 Figure 48 Vent Pipe Termination for Non−Direct Vent and Ventilated Combustion Air System Roof Termination (Preferred) Vent Maintain 12 in...
- Page 42 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Size the Vent and Combustion Air Pipes Trap Kit, refer to those instructions for proper drain connections. General The tee may also be connected to the intake air pipe on the side of the casing. See Figure 49. Approved 2−pipe In any configuration, it will be necessary to add the equivalent termination fittings...
- Page 43 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB furnace input size. Compare the Total Equivalent Vent length of all the fittings and terminations (TEVL), recalculate Length (TEVL) to the MEVL: Total Equivalent Vent Length using the next smaller diameter. If the Maximum Vent Length is still longer than the longer TEVL a.
- Page 44 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Configure the Furnace Figure 51 Upflow Configurations WARNING CARBON MONOXIDE POISONING HAZARD Failure to follow this warning could result in personal injury or death. To route the vent pipe and combustion air pipe through the furnace, the manufacturer supplied kit must be used.
- Page 45 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Figure 52 Downflow Configurations Figure 53 Horizontal Left Configurations HORIZONTAL LEFT − VERTICAL VENT CONFIGURATION DOWNFLOW LEFT − VENT CONFIGURATION Representative drawing only, some models may vary in appearance. Representative drawing only, some models may vary in appearance. A11311 DOWNFLOW RIGHT −...
- Page 46 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB NOTES: Figure 54 Horizontal Right Configurations 1. Attach vent pipe adapter with gasket to furnace casing. 2. Align notches in rubber coupling over standoffs on adapter. Slide clamps over the coupling. 3. Slide vent pipe through adapter and coupling into vent elbow.
- Page 47 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB 5. Insert a length of vent pipe through the coupling into the Figure 48, Alberta Figure 44 and Figure 46. For ventilated combustion terminations, refer outlet of the vent elbow. Figure 48, Alberta Figure 44 and Figure 46. 6.
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Page 48: Installing The Vent Termination
INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB NOTE: Follow the instructions of the vent terminal WARNING manufacturer. These instructions are provided as a reference only. CARBON MONOXIDE POISONING HAZARD Cut one 4−in. (102 mm) diameter hole for 2−in. (50 mm ND) kit, Failure to follow this warning could result in personal or one 5−in. - Page 49 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB 5. Disassemble loose pipe fittings. Clean and cement using 4. Disassemble loose pipe fittings. Clean and cement using same procedures as used for system piping. DO NOT same procedures as used for system piping. DO NOT CEMENT POLYPROPYLENE FITTINGS.
- Page 50 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Figure 56 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 Figure 57 Attic Vent Termination Ventilated Combustion Air intake pipe Vent through roof flashing...
- Page 51 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Figure 58 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: N9MSB Figure 59 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: N9MSB 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. DIRECT VENT (2-PIPE) AND NON-DIRECT VENT (1-PIPE) Vent Pipe Diameter (in.) Altitude... - Page 54 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Example 1 A direct-vent 60,000 BTUH furnace installed at 2100 ft. (640M). Venting system includes FOR EACH PIPE 100 feet (30 M) of vent pipe, 95 feet (28 M) of combustion air inlet pipe, (3) 90º long-radius elbows, (2) 45º long-radius elbows, and a factory accessory concentric vent kit.
- Page 55 INSTALLATION INSTRUCTIONS Gas Furnace: N9MSB Table 16 MAXIMUM EQUIVALENT VENT LENGTH - Feet (Meters) Note: Maximum Equivalent Vent Length (MEVL) does NOT include elbows or terminations. Use DEDUCTIONS FROM MEVL − Table 15 to determine allowable vent length for each application. Note: Vent sizing for Canadian installations over 4500 ft.
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Page 56: Maximum Allowable Exposed Vent Lengths
27.4 46.6 27.4 55.8 140,000 -20 (-30) 3.0 10.7 27.4 31.7 27.4 39.0 -40 (-40) 27.4 22.9 27.4 28.7 International Comfort Products S PO Box 128 S Lewisburg, TN 37091 USA Specifications subject to change without notice. 440 01 4102 01...