Table of Contents
Advertisement
F97CMN and G97CMN
Modulating, High Efficiency Condensing
Gas Furnace, 4-Way Multipoise
Installation, Start-up, Operating and Service
NOTE: Read the entire instruction manual before starting the
installation.
TABLE OF CONTENTS
IMPORTANT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Table 1 - Minimum Clearances to Combustible Materials for All Units
4
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Table 2 - Loose Parts Bag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
CODES AND STANDARDS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
DURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
AIR FOR COMBUSTION AND VENTILATION . . . . . . . . . . . . . . 7
Table 3 - Minimum Free Area Required for Each Combustion Air
Opening or Duct to Outdoors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 4 - Minimum Space Volumes for 100% Combustion, Ventila-
tion and Dilution Air from Outdoors . . . . . . . . . . . . . . . . . . . . . . . 9
CONDENSATE TRAP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
CONDENSATE DRAIN CONNECTION . . . . . . . . . . . . . . . . . . . . 11
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 5 - Opening Dimensions - In. (mm) . . . . . . . . . . . . . . . . . 16
Table 6 - Filter Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
AIR DUCTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 7 - Cooling4 and Heating Air Delivery - CFM (Bottom Return5
With Filter). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
GAS PIPING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table 8 - Maximum Capacity of Pipe . . . . . . . . . . . . . . . . . . . . . 24
ELECTRICAL CONNECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 9 - Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
VENTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Table 10 - Vent Termination Kit for Direct Vent (2-pipe) Systems32
Table 11 - Maximum Equivalent Vent Length - Ft. . . . . . . . . . . 40
Table 12 - Deductions from Maximum Equivalent Vent Length - Ft.
(M) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Table 13 - Maximum Allowable Exposed Vent Lengths Insulation Ta-
ble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Maximum Allowable Exposed Vent Length in Unconditioned Space - Ft.
44
Maximum Allowable Exposed Vent Length in Unconditioned Space -
Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Table 14 - Hanger Spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Table 15 - Approved Combustion-Air and Vent Pipe, Fitting and Ce-
ment Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
START-UP, ADJUSTMENT, AND SAFETY CHECK . . . . . . . . . 49
Table 16 - Altitude Derate Multiplier for U.S.A.* . . . . . . . . . . . 52
Table 17 - Gas Rate (CU ft./hr). . . . . . . . . . . . . . . . . . . . . . . . . . 54
Portions of the text and tables are reprinted from NFPA 54/ANSI Z223.1E, 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
and Maintenance Instructions
on the referenced subject, which is represented only by the standard in its entirety.
Table 18 - Blower Off Delay Setup Switch . . . . . . . . . . . . . . . . 55
Table 19 - Orifice Size and Manifold Pressure (In. W.C.) for Gas Input
Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Table 20 - Orifice Size and Manifold Pressure (In. W.C.) for Gas Input
Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
SERVICE AND MAINTENANCE PROCEDURES. . . . . . . . . . . . 58
Winterization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
PARTS REPLACEMENT INFORMATION GUIDE . . . . . . . . . . . 74
MODEL NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
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 .
WARNING
!
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal injury and/or
death.
Carbon Monoxide (CO) is a colorless, odorless, and tasteless poisonous
gas that can be fatal when inhaled. Follow all installation, maintenance,
and service instructions. See additional information below regarding
the installation of a CO Alarm.
Most states in the USA and jurisdictions in Canada have laws that
require the use of Carbon Monoxide (CO) alarms with fuel burning
products. Examples of fuel burning products are furnaces, boilers, space
heaters, generators, water heaters, stoves/ranges, clothes dryers,
fireplaces, incinerators, automobiles, and other internal combustion
engines. Even if there are no laws in your jurisdiction requiring a CO
Alarm, it's highly recommended that whenever any fuel burning product
is used in or around the home or business that the dwelling be equipped
with a CO Alarm(s). The Consumer Product Safety Commission
recommends the use of CO Alarm(s). The CO Alarm(s) must be
installed, operated, and maintained according to the CO Alarm
manufacturer's instructions. For more information about Carbon
Monoxide, local laws, or to purchase a CO Alarm online, please visit the
following website. https://www.kidde.com.
A200326
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Tempstar F97CMN
Summary of Contents for Tempstar F97CMN
-
Page 1: Table Of Contents
F97CMN and G97CMN Modulating, High Efficiency Condensing Gas Furnace, 4-Way Multipoise Installation, Start-up, Operating and Service and Maintenance Instructions NOTE: Read the entire instruction manual before starting the Table 18 – Blower Off Delay Setup Switch ....55 Table 19 –... -
Page 2: Required Notice For Massachusetts Installations
F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions 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. -
Page 3: Safety Considerations
F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions NOTE: ALL DIMENSIONS IN INCH (MM) U.S. ECCN: Not Subject to Regulation (N.S.R.) SD5660-4 REV. - A210210 SHIP WT. FURNACE SIZE BOTTOM LB (KG) CABINET WIDTH OUTLET WIDTH AIR INTAKE... - Page 4 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions NOTICE are used to highlight suggestions which will result in enhanced WARNING installation, reliability, or operation. 1. Use only with type of gas approved for this furnace. Refer to the FIRE HAZARD furnace rating plate.
-
Page 5: Introduction
F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Failure to follow these guidelines is considered faulty installation and/or NOTICE misapplication of the furnace; and resulting failure, damage, or repairs may impact warranty coverage. For accessory installation details, refer to the applicable instruction Important Installation and Start-up Procedures literature. -
Page 6: Codes And Standards
F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Acoustical Lining and Fibrous Glass Duct WARNING • US and CANADA: Current edition of SMACNA, NFPA 90B as tested by UL Standard 181 for Class I Rigid Air Ducts... -
Page 7: Accessories
F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions ACCESSORIES WARNING See Specification Sheet for a list of accessories for this product. LOCATION CARBON MONOXIDE POISONING / COMPONENT DAMAGE HAZARD General Failure to follow this warning could result in personal injury or death These furnaces are shipped with materials to assist in proper furnace and unit component damage. - Page 8 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Outdoor Combustion Air Method All air for combustion is piped directly to the furnace from a space that is well ventilated with outdoor air (such as an attic, crawl space, or 1.
-
Page 9: Condensate Trap
F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions 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 Ft3 (M3) 1,050 (29.7) - Page 10 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Condensate Trap-Horizontal Orientation • Fig. 9 shows the condensate trap and tubing before and after relocation in the horizontal left position. When the furnace is installed in the horizontal right position, the •...
-
Page 11: Condensate Drain Connection
F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions CONDENSATE DRAIN CONNECTION of freezing, the drain trap and drain line must be protected. In areas where the temperature may be below 32° F (0° C), a Condensate Freeze CAUTION Protection kit is strongly recommended. - Page 12 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Evaporator Coil + + + + = Positive pressure < + = Pressure lower than areas with + = Negative pressure Condensing Furnace Blower creates positive pressure. Positive pressure extends into coil condensate drain (no trap).
- Page 13 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions L12F019B CAUTION CUT HAZARD Failure to follow this caution may result in personal injury. Sheet metal parts may have sharp edges or burrs. Use care and wear A170128 Fig. 15 – Drain Trap Connection and Routing...
-
Page 14: Installation
F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions fit and positioning. In both upflow and downflow orientations, the condensate and compatible with mineral and vegetable oils, such as Z-pipe should NOT be resting on any sheet metal parts. - Page 15 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions UPFLOW DOWNFLOW HORIZONTAL PERFORATED DISCHARGE DUCT 90° 90° FLANGE HORIZONTAL TOP RETURN NOT PERMITTED FOR ANY MODEL 120° 120° 120° A10493 Fig. 19 – Duct Flanges Return Air Connections...
- Page 16 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions 4. Install special base coil assembly or coil box as shown in Fig. WARNING NOTE: It is recommended that the perforated supply-air duct flanges be completely removed from furnace when installing the furnace on a FIRE, EXPLOSION, AND CARBON MONOXIDE factory-supplied cased coil or coil box.
- Page 17 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Not all horizontal furnaces are approved for side return air connections, CAUTION Fig. 22. Where required by code, seal bottom closure to furnace with tape, mastic or other durable sealing method.
- Page 18 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions For downflow applications, the filter rack (or field supplied accessory air Refer to the instructions supplied with the Filter Rack or accessory air cleaner) must only be connected to the bottom opening on the furnace, filter for assembly and other details.
- Page 19 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Leveling Legs (If Desired) In upflow position with side return inlet(s), leveling legs may be used, Fig. 27. Install field-supplied, 5/16 x 1-1/2 in. (8 x 38 mm) (max) corrosion-resistant machine bolts, washers and nuts.
-
Page 20: Air Ducts
F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions than 12-in. (305 mm) above the combustible deck or suspended furnaces duct(s) sealed to the furnace casing and terminating outside the space closer than 12-in. (305 mm) to joists. The sheet metal MUST extend containing the furnace. - Page 21 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Table 7 – Cooling and Heating Air Delivery - CFM (Bottom Return With Filter) (Continued) (SW1-5 and SW4-3 set to OFF, except as indicated. See notes 1 and 2.)
- Page 22 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Table 7 – Cooling and Heating Air Delivery - CFM (Bottom Return With Filter) (Continued) (SW1-5 and SW4-3 set to OFF, except as indicated. See notes 1 and 2.)
-
Page 23: Gas Piping
F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Table 7 – Cooling and Heating Air Delivery - CFM (Bottom Return With Filter) (Continued) (SW1-5 and SW4-3 set to OFF, except as indicated. See notes 1 and 2.) - Page 24 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Gas piping must be installed in accordance with national and local When a flexible connector is used, black pipe shall be installed at the codes. Refer to current edition of NFGC in the U.S.A. Refer to current furnace gas control valve and extend a minimum of 2-in.
-
Page 25: Electrical Connections
F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Piping should be pressure and leak tested in accordance with the current Fig. 31 for field wiring diagram showing typical field 115-v wiring. addition of the NFGC in the United States, local, and national plumbing Check all factory and field electrical connections for tightness. - Page 26 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions attached to the outside of the furnace casing. The field ground wire and WARNING furnace main ground wire are grounded when the J-Box bracket is attached to the furnace and the field ground wire and factory ground wire ELECTRICAL SHOCK AND FIRE HAZARD are secured to the bracket grounding screw.
- Page 27 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions 7. Install the green ground screw to the J-Box bracket and attach both ground wires to the green ground screw. 8. Connect any code required external disconnect(s) to field power wiring.
- Page 28 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions The 24-v circuit contains an automotive-type, 3-amp. fuse located on the control. Any direct shorts during installation, service, or maintenance could cause this fuse to blow. If fuse replacement is required, use ONLY a 3-amp.
-
Page 29: Venting
F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions A11157 Fig. 37 – Field-supplied Isolation Relay for Humidifiers with Internal Power Supply Accessories Venting for this furnace shall follow all Local codes for Category IV (See Fig. 36 Fig. - Page 30 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions ventilation des gaz, ses accessoires, le terminal concentrique mural ainsi WARNING que l’ensemble du drain de condensation extérieur fourni par le fabricant de cette fournaise ont été certifiés ULCS 636 pour l’application des CARBON MONOXIDE POISONING HAZARD composantes Royal Pipe, IPEX PVC qui sont certifiées à...
- Page 31 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Venting Systems Do not take combustion air from inside the chimney when using ventilated combustion air or single pipe vent option. WARNING These furnaces can be vented as either direct vent (two-pipe) or as ventilated combustion air system.
- Page 32 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions A05091 Fig. 39 – Vent Pipe Termination for Non-Direct Vent and Ventilated Combustion Air System Table 10 – Vent Termination Kit for Direct Vent (2-pipe) Systems Vent and Approved Two-Pipe Termination Fittings...
- Page 33 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions NOTICE NOTICE OPTIONAL VENTING BELOW THE FURNACE RECOMMENDED SUPPORT FOR VENT TERMINATIONS The venting system may be positioned below the furnace ONLY IF the It is recommended that sidewall vent terminations in excess of 24 factory accessory External Vent Trap Kit is used.
- Page 34 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions WARNING CARBON MONOXIDE POISONING HAZARD Failure to follow the instructions outlined below for each appliance being placed into operation could result in carbon monoxide poisoning or death. For all venting configurations for this appliance and other gas...
- Page 35 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions A12326 Fig. 42 – Direct Vent Termination Clearance 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.
- Page 36 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Avoid venting under a deck or large overhang. Recirculation could occur and cause performance or system problems. Ice build-up may occur. A12325 Fig. 43 – Ventilated Combustion Air and Non-Direct Vent Termination Clearance NOTE: The following is based upon National codes for gas appliances and is provided as a reference.
- Page 37 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Inside corner vent terminations are permitted provided that (Fig. 44): 4. For vent terminations located more than 6 feet (2 meters) from an inside corner, refer to the appropriate Direct Vent Clearance Table 1.
- Page 38 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Ventilated Combustion Air intake pipe Pipe hangar 3” (76 mm) OPTIONAL TERMINATION 12” (305 mm) Ventilated Combustion Air BRACKET FOR 2-PIPE intake termination in crawl TERMINATIONS space 12 IN. (305 MM) MIN.
- Page 39 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions connecting a drain line to the trap is recommended as trace amounts of terminations or pipe lengths and elbows used for “standard” vent moisture will evaporate into the intake air stream. If the combustion air...
- Page 40 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions 1. Using winter design temperature (used in load calculations), find 5. Insulate combustion air inlet piping when run in warm, humid appropriate temperature for your application and furnace model.
-
Page 41: Meters
F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Maximum Equivalent Vent Length - Meters Meters Unit Size 60,000 80,000 100,000 120,000 Pipe Dia. (mm) 0-610 15.2 30.4 53.3 60.9 28.9 39.6 53.3 60.9 13.7 24.3 53.3 60.9 22.8... - Page 42 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions The vent elbow can be rotated to the required location on the casing if necessary, see Fig. 49. To rotate the vent elbow: 1. Loosen the clamp on the inlet of the vent elbow attached to the inducer.
- Page 43 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions HORIZONTAL LEFT-VERTICAL VENT CONFIGURATION A11327A HORIZONTAL RIGHT-LEFT VENT CONFIGURATION A11336 HORIZONAL LEFT-LEFT VENT CONFIGURATION A11328A HORIZONTAL RIGHT-RIGHT VENT CONFIGURATION A11335 Fig. 55 – Horizontal Right (Appearance may vary) See “Notes for Venting Options”...
- Page 44 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Table 13 – Maximum Allowable Exposed Vent Lengths Insulation Table Maximum Allowable Exposed Vent Length in Unconditioned Space - Ft. 40,000* BTUH 60,000 BTUH Unit Size 3/8-in. 1/2-in. Uninsulated Uninsulated 3/8-in.
- Page 45 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Installing the Vent Pipe Adapter and Combustion Air NOTICE Pipe Adapter CAUTION The following instructions are for PVC/ABS DWV vent piping only. DO NOT USE THESE TECHNIQUES FOR POLYPROPYLENE VENT PIPING SYSTEMS.
- Page 46 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions termination elbows as shown in Fig. Fig. 43 Fig. WARNING For Ventilated Combustion Air Termination, See Fig. 19. Use appropriate methods to seal openings where combustion air CARBON MONOXIDE POISONING HAZARD pipe and vent pipe pass through roof or sidewall.
- Page 47 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Two-Pipe (Direct Vent) and Single-Pipe (Ventilated 2. Loosely install elbow in bracket (if used) and place assembly on combustion-air pipe. Combustion Air) Terminations 3. Install bracket as shown in Fig.
- Page 48 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Table 15 – Approved Combustion-Air and Vent Pipe, Fitting and Cement Materials MATERIALS 1. All pipe*, fittings*, primers**, and solvents** must conform to American National Standards Institute (ANSI) standards and American Society for Testing and Materials (ASTM) standards 2.
-
Page 49: Start-Up, Adjustment, And Safety Check
F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Example 2 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 (29 M) of combustion air inlet pipe, (3) 90º long-radius elbows, and a polypropylene concentric vent kit. Also includes 20 feet (6.1 M) of flexible polypropylene vent pipe, included within the 100 feet (30 M) of vent pipe. - Page 50 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions 3. Configure the set-up switches as necessary for the application. two-speed cooling or heat pump unit. Refer to Table 5 and the Adjustments section for setup switch configurations. This setup feature 4.
- Page 51 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Prime Condensate Trap with Water WARNING WARNING FIRE OR EXPLOSION HAZARD CARBON MONOXIDE POISONING HAZARD Failure to follow this warning could result in personal injury, death, and/or property damage.
- Page 52 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions 5. Follow heat value and specific gravity lines to point of intersection NOTICE to find orifice size and maximum and minimum manifold pressure settings for proper operation. The NATURAL GAS manifold pressure adjustments in Tables 18 and 6.
- Page 53 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions than one click per second until you obtain the required manifold WARNING pressure, see Fig. FIRE HAZARD Failure to follow this warning could result in personal injury, death, and/or property damage.
- Page 54 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions 3. Jumper R to W/W1 and W2. Run furnace for 3 minutes in Table 17 – Gas Rate (CU ft./hr) (Continued) maximum heat operation. 1200 4. Measure time (in sec) for gas meter to complete one revolution and 1125 note reading.
- Page 55 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions 1. Place thermometers in return and supply ducts as near furnace as To lock the furnace in Maximum Heat: possible. Be sure thermometers do not see heat exchanger so that 1.
- Page 56 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions model size, the cooling airflow can be adjusted from 1.5 to 6 tons based thermostat anticipator should NOT be in the circuit while on 350 CFM ton. measuring current.
-
Page 57: Rate
F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Table 19 – Orifice Size and Manifold Pressure (In. W.C.) for Gas Table 20 – Orifice Size and Manifold Pressure (In. W.C.) for Gas Input Rate Input Rate To Be Used with Modulating Furnaces EXCEPT (F/G)97CMN0602120... -
Page 58: Service And Maintenance Procedures
F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions SERVICE AND MAINTENANCE PROCEDURES Electrical Controls and Wiring Untrained personnel can perform basic maintenance functions such as WARNING cleaning and replacing air filters. All other operations must be performed by trained service personnel. - Page 59 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Component Self-Test 1. Check and clean air filter each month or more frequently if required. Replace if torn. Component Test can ONLY be initiated by performing the following: 2. Check blower motor and wheel for cleanliness each heating and 1.
- Page 60 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions blower wheel vanes. Do not bend wheel or blades as balance will be WARNING affected. 7. If greasy residue is present on blower wheel, remove wheel from ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD the blower housing and wash it with an appropriate degreaser.
- Page 61 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions 19. Turn on gas supply and cycle furnace through one complete heating 7. Disconnect Hot Surface Igniter (HSI) wires from HSI. cycle. Verify the furnace temperature rise as shown in Adjustments 8.
- Page 62 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions 10. Align the burner assembly with the openings in the primary cell 4. Check igniter resistance. Igniter resistance is affected by inlet panel and attach the burner assembly to the cell panel.
- Page 63 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Cleaning Condensate Drain and Trap Cleaning Heat Exchangers NOTE: If the condensate trap is removed, a new gasket between the trap The following items must be performed by a qualified service and collector box is required.
-
Page 64: Winterization
F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions 12. Check for gas leaks. Since the furnace uses a condensing heat exchanger, some water will accumulate in the unit as a result of the heat transfer process. Therefore, 13. - Page 65 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions A200359 Fig. 70 – Troubleshooting Guide Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
- Page 66 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions A200360 Troubleshooting Guide (continued) Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
- Page 67 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions A200361 Troubleshooting Guide (continued) Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
-
Page 68: Sequence Of Operation
F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions SEQUENCE OF OPERATION intermediate-heat. The furnace control CPU defaults to minimum-heat on the first thermostat cycle and calculates the modulating rate that the CAUTION furnace should run at for 19 minutes on subsequent heat cycles. - Page 69 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions control CPU will lock out of Gas-Heating mode and operate the on selection at blower-OFF delay switches). The furnace control inducer motor IDM at full speed until flame is no longer proved.
- Page 70 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions Two-Stage Thermostat and Two-Stage Intermediate/ The dehumidification output, D or DHUM on the Thermostat should be connected to the furnace control thermostat terminal DHUM. When Maximum Heating there is a dehumidify demand, the DHUM input is activated, which Fig.
- Page 71 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions The blower motor BLWM will remain on until the main burners ignite disappear at the same time, the blower motor BLWM will remain on at then shut OFF and remain OFF for 25 seconds before coming back on at minimum-heat airflow for the selected blower-OFF delay period.
- Page 72 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions A200363 Fig. 71 – Service Label Information Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
- Page 73 F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions 338307-201 Rev.N A200364 Fig. 72 – Wiring Diagram Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
-
Page 74: Parts Replacement Information Guide
F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions PARTS REPLACEMENT INFORMATION GUIDE Casing Group Gas Control Group Blower door Burner Bottom plate Flame sensor Control door Gas valve Door knob assembly Hot surface igniter Top filler plate...
Need help?
Do you have a question about the F97CMN and is the answer not in the manual?
Questions and answers