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WARNING
1. Improper installation, adjustment, alteration,
service or maintenance can cause property
damage, injury or death, and could cause
exposure to substances which have been
determined by various state agencies to
cause cancer, birth defects or other
reproductive harm. Read the installation,
operating and maintenance instructions
thoroughly before installing or servicing this
equipment.
2. Installing, starting up and servicing heating,
ventilation and air conditioning equipment
poses significant hazards and requires
specialized knowledge of Modine products
and training in performing those services.
Failure to have any service properly
performed by, or making any modification to
Modine equipment without the use of,
qualified service personnel could result in
serious injury to person and property,
including death. Therefore, only qualified
service personnel should work on any
Modine products.
CAUTION
To prevent premature heat exchanger failure
do not locate ANY gas-fired units in areas
where chlorinated, halogenated, or acid
vapors are present in the atmosphere.
PLEASE BE SURE TO LEAVE IT WITH THE OWNER WHEN YOU LEAVE THE JOB.
INSTALLATION AND SERVICE MANUAL
gas-fired indoor separated combustion duct furnaces
THIS MANUAL IS THE PROPERTY OF THE OWNER.
Approved for use in California by the CEC.
FOR YOUR SAFETY
IF YOU SMELL GAS:
1. Open windows.
2. Don't touch electrical switches.
3. Extinguish any open flame.
4. Immediately call your gas supplier.
FOR YOUR SAFETY
The use and storage of gasoline or other
flammable vapors and liquids in open
containers in the vicinity of this appliance is
hazardous.
Inspection on Arrival
1.
Inspect unit upon arrival. In case of damage, report it
immediately to transportation company and your local
factory sales representative.
2.
Check rating plate on unit to verify that power supply meets
available electric power at the point of installation.
3.
Inspect unit upon arrival for conformance with description of
product ordered (including specifications where applicable).
AIR 5-593.10
5H0768550003
May, 2017
model IFS
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Summary of Contents for Modine Manufacturing IFS
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Page 1: Inspection On Arrival
AIR 5-593.10 5H0768550003 May, 2017 INSTALLATION AND SERVICE MANUAL gas-fired indoor separated combustion duct furnaces model IFS Approved for use in California by the CEC. FOR YOUR SAFETY IF YOU SMELL GAS: 1. Open windows. 2. Don’t touch electrical switches. -
Page 2: Table Of Contents
Maintenance ................22 replacement parts list may be obtained by contacting Manifold Assembly Removal ..........23 Modine Manufacturing Company. Refer to the rating plate Burner and Pilot Assembly Removal ........23 on the appliance for complete appliance model number, Service & Troubleshooting............ 24-25 serial number, and company address. -
Page 3: Si (Metric) Conversion Factors
SI (METRIC) CONVERSION FACTORS / UNIT LOCATION Figure 3.1 - Combustible Material and Service Clearances SI (METRIC) CONVERSION FACTORS Access Table 3.1 Model Side Size To Convert Multiply By To Obtain To Convert Multiply By To Obtain 75 thru 175 1"... -
Page 4: Installation
INSTALLATION Direction of Airflow check for hot spots on heat exchangers due to poor air distribution or lack of sufficient air (CFM). Select proper direction of airflow. For models in which the 10th digit of the model number is an “L” for Low Temperature Rise, Figure 4.2 - Duct Connections the airflow direction is fully reversible without modification to the duct furnace. -
Page 5: Venting
CSA B149.1. A5. A minimum of 12" straight pipe is recommended from the Model IFS duct furnaces must be vented with the proper flue outlet before turns in the vent pipe. passageway as described in these instructions to convey flue A6. - Page 6 INSTALLATION - VENTING Figure 6.1 - Venting Through Combustible Roof or Wall A19. Long runs of horizontal or vertical combustion air pipes may require insulation in very cold climates to prevent the LISTED buildup of condensation on the outside of the pipe where LISTED the pipe passes through conditioned spaces.
- Page 7 INSTALLATION - VENTING Section B - Vertical 2-Pipe Vent System Table 7.1 - Minimum Height from Roof to Lowest Installation Discharge Opening B1. This section applies to vertically vented 2-pipe (one Rise X (in) Roof Pitch Min Height H (ft) j combustion air inlet pipe and one vent pipe) vent systems Flat to 6/12 1.00...
- Page 8 INSTALLATION - VENTING For Vertically Vented Units (Refer to Figure 8.3): Figure 8.1 - Horizontal 2-Pipe Venting j Concentric adapter assembly (same for horizontal and MUST USE THIMBLE SUPPORT BRACKET vertical kits) PITCH COMBUSTION AIR THROUGH WALL (See Fig. 9.2 for detail) 24'' MIN.
- Page 9 INSTALLATION - VENTING D5. The adapter box can be mounted flush to the wall (for Figure 9.1 - Adapter Box with Combustion Air Intake horizontal kits) or to the ceiling (for vertical kits). The box Pipe Attached can also be offset from the wall or ceiling by using field supplied brackets.
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Page 10: Gas Connections
INSTALLATION Gas Connections Figure 10.1 - Recommended Sediment Trap/Manual Shut- off Valve Installation - Side or Bottom Gas Connection WARNING GROUND SUPPLY LINE JOINT UNION W/ BRASS 1. All field gas piping must be pressure/leak tested prior to SEAT MANUAL GAS operation. -
Page 11: Considerations For Elevation
Equation 11.1 - Manifold Pressure for Gas Heating Values Different Than Shown in Table 11.1 The standard rating for Model IFS is certified for elevations up to 2,000 feet above sea level. Operation at elevations above 2,000 feet requires ratings be reduced 4% for each 1000 feet above sea level per ANSI Z223.1. -
Page 12: Electrical Connections
INSTALLATION / START-UP PROCEDURE Electrical Connections START-UP PROCEDURE IMPORTANT WARNING Start-up and adjustment procedures should be performed by a 1. Disconnect power supply before making wiring qualified service agency. connections to prevent electrical shock and equipment damage. 2. All appliances must be wired strictly in accordance with 1. -
Page 13: Pilot Burner And Main Burner Adjustment
START-UP PROCEDURE Pilot Burner Adjustment To Adjust the Manifold Pressure 1. Move the field installed manual shut-off valve to the “OFF” The pilot burner is orificed to burn properly with an inlet position. pressure of 6-7" W.C. on natural gas and 11-14" W.C. on propane gas, but final adjustment must be made after 2. -
Page 14: Air Shutter Adjustment
START-UP PROCEDURE Air Shutter Adjustment IMPORTANT Proper operation provides a soft blue flame with a well-defined inner core. A lack of primary air will reveal soft yellow-tipped To prevent premature heat exchanger failure, with all control flames. Excess primary air produces short, well-defined flames systems, a blower starting mechanism must be provided so with a tendency to lift off the burner ports. -
Page 15: Variable Air Movement Applications
START-UP PROCEDURE Multiple Furnace Controls signal (8000 to 12000 ohms) in the thermostat is converted by the modulating amplifier to an inverted DC voltage (0VDC for high fire to 12 VDC for low fire). The output Staged Control (Digit 12=1 or 2): voltage is applied to the modulating gas valve to control For control of multiple staged units, each furnace would be the gas flow to the main burner. -
Page 16: Gas Control Options
START-UP PROCEDURE Gas Control Options o Air Flow Proving Switch The air flow proving switch is factory installed in the duct The unit must be reviewed to determine if any of the listed gas furnace electrical junction box. The air flow proving switch control options were supplied. - Page 17 THIS PAGE INTENTIONALLY LEFT BLANK AIR 5-593.9...
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Page 18: Performance
PERFORMANCE Table 18.1 - Air Temperature Rise jkl Air Temperature Rise Through Unit (°F) Model Input Output Size (Btu/Hr) (Btu/Hr) 20 m 40 m 50 m 75,000 60,750 2,813 1,406 1,125 100,000 81,000 3,750 1,875 1,500 1,250 1,154 1,071 1,000 125,000 101,250 4,688 2,344... -
Page 19: Dimensionals
DIMENSIONS Figure 19.1 - Unit Dimensions (all dimensions in inches) 35.40 33.40 26.63 13.32 8.66 MOUNTING HOLES 20.00 B -- MOUNTING HOLES 2.00 ELECTRICAL EXHAUST CONNECTIONS OUTLET AIR TUNNEL (BOTH SIDES) HEIGHT AIR TUNNEL COMBUSTION HEIGHT AIR INLET 1.93 AIR TUNNEL WIDTH 1.06"... - Page 20 THIS PAGE INTENTIONALLY LEFT BLANK AIR 5-593.9...
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Page 22: Maintenance
The heat exchanger should be checked annually for cracks Modine Manufacturing Company. Refer to the rating plate and discoloration of the tubes. If a crack is detected, the heat on the appliance for complete appliance model number, exchanger should be replaced before the unit is put back into serial number, and company address. -
Page 23: Manifold Assembly Removal
MAINTENANCE Figure 23.1 - Manifold Assembly Removal Figure 23.2 - Burner and Pilot Assembly Removal SERIAL PLATE ON ELECTRICAL OUTSIDE OF DOOR JUNCTION (NOT SHOWN) GROUND UNION JOINT MANIFOLD AIR SHUTTERS PILOT PILOT (NOT SHOWN) IGNITION ASSEMBLY SUPPLY ARE LOCATED CABLE LINE ON THE... -
Page 24: Service & Troubleshooting
SERVICE & TROUBLESHOOTING Table 24.1 - Troubleshooting Trouble Possible Cause Possible Remedy Power supply is off. Turn on main power. Power Exhauster Motor will not start No 24V power to thermostat. Check control transformer. Thermostat malfunction. Check/replace thermostat. Defective power exhauster relay. Replace power exhauster relay. -
Page 25: Service & Troubleshooting
SERVICE & TROUBLESHOOTING Trouble Possible Cause Possible Remedy Unit cycling on high limit. j Not Enough Heat a. Clean/correct duct system. a. Obstructions/leaks in duct system. b. Adjust to a maximum of 14" W.C. b. Main pressure set too high. c. -
Page 26: Replacement Parts Ordering
REPLACEMENT PARTS ORDERING Ordering When servicing, repairing or replacing parts on these units, locate the serial plate of the unit and always give the complete Model Number and Serial Number from the serial plate. The serial plate is located on the door of the electrical control box. The factory part number for some common replacement parts are listed on the sample serial plate (See Figure 26.1). -
Page 27: Model Identification
MODEL IDENTIFICATION Indoor Separated Combustion Duct Furnace Model Nomenclature 4 5 6 1 - Product Type (PT) I - Duct Furnace - Indoor 2 - Unit Configuration (UC) F - Furnace 3 - Venting (V) S - Separated Combustion 4,5,6 - Furnace Input Rating (MBH) 200 - 200,000 Btu/Hr Input 75 - 75,000 Btu/Hr Input 100 - 100,000 Btu/Hr Input... -
Page 28: Commercial Warranty
Burners High Intensity Infrared Units Sheet Metal Parts All Products As Modine Manufacturing Company has a continuous product improvement program, it reserves the right to change design and specifications without notice. Modine Manufacturing Company 1500 DeKoven Avenue Racine, WI 53403 Phone: 1.866.823.1631 (toll free)
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