Portions of the text and tables are reprinted from NFPA 54 /ANSI Z223.1−2009©, 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.

80% Single Stage, Downflow,

Category I, Gas Furnace

C8DNL, H8DNL, T8DNL

Safety Labeling and Signal Words

DANGER,

WARNING,

. . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . .

. . . .

. . . . . . . . . . . . . . . . . . . . . . .

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.

PERSONAL INJURY, AND/OR PROPERTY

DAMAGE HAZARD

Failure to carefully read and follow this warning could

result in equipment malfunction, property damage,

personal injury and/or death.

Installation or repairs made by unqualified persons

could result in equipment malfunction, property

damage, personal injury and/or death.

The information contained in this manual is intended for

use by a qualified service technician familiar with safety

procedures and equipped with proper tools and test

instruments.

Installation must conform with local building codes and

with the Natural Fuel Gas Code (NFCG) NFPA 54/ANSI

Z223.1,

and

CAN/CSA−B149.1 and .2 Natural Gas and Propane

Installation Codes.

INSTALLER: Affix these instructions on or adjacent to the

furnace.

CONSUMER: Retain these instructions for future refer-

ence.

WARNING

National

standards

441 01 2314 06 July 2010

Canada

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Summary of Contents for ICP C8DNL

Page 1: Table Of Contents
INSTALLATION INSTRUCTIONS 80% Single Stage, Downflow, Category I, Gas Furnace C8DNL, H8DNL, T8DNL 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...
Page 2: Safety Considerations
SAFETY CONSIDERATIONS WARNING Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical ELECTRICAL SHOCK HAZARD shock, or other conditions which may cause death, personal Failure to follow this warning could cause personal injury, or property damage. Consult a qualified installer, injury or death.
Page 3 START−UP CHECK SHEET For 80+ Furnace (This sheet is optional. Keep this page for future reference.) Date of Start−Up: Calculated Firing Rate:(See Checks and Adjustments Sec- tion). Dealer Name: Heating Check Address: Measured Line Pressure when Firing Unit: City, State(Province), Zip or Postal Code: Measured Manifold Gas Pressure: Phone: Temperature of Supply Air:...
Page 4: Safe Installation Requirements
1. Safe Installation Requirements WARNING Safety Rules Your unit is built to provide many years of safe and dependable FIRE, EXPLOSION, AND ASPHYXIATING HAZARD service providing it is properly installed and maintained. However, Improper adjustment, alteration, service, abuse and/or improper use can shorten the life of the unit and create hazards for you, the owner.
Page 5: Installation
Your furnace is designed solely to provide a safe and comfortable −or− living environment. The furnace is NOT designed to ensure that Have someone check the structure frequently during cold water pipes will not freeze. It is equipped with several safety de- weather to make sure it is warm enough to prevent pipes vices that are designed to turn the furnace off and prevent it from from freezing.
Page 6: Furnace Installation
Figure 1 UNIT Dimensions and Clearances (*8DNL)DIMENSIONS MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS FOR ALL UNITS (724) REAR (17) water FRONT 3″ (76 mm) heater Recommended For Service 30″ (762 mm) ALL SIDES Of SUPPLY PLENUM 1″ (25 mm) SIDES VENT 30″...
Page 7: Combustion & Ventilation Air
Typical Downflow Installation Figure 2 RETURN GAS SUPPLY SUPPLY 25−24−38 3. Combustion & Ventilation Air WARNING evaluated carefully as it may be necessary to provide outdoor air for combustion. CARBON MONOXIDE POISONING HAZARD • Commercial buildings. • Failure to follow this warning could result in Buildings with indoor pools.
Page 8 1. Provide the space with sufficient air for proper combustion and One opening MUST commence within 12″ (304.8mm) of ventilation of flue gases using horizontal or vertical ducts or the floor and the second opening MUST commence within openings. 12″ (304.8mm) of the ceiling. Size openings and ducts per Table 1.
Page 9 The Standard Method may be used, if the space has no less vol- Indoor Combustion Air ume than 50 cubic feet per 1,000 BTUH (4.8 cubic meters per kW) WARNING input rating for all gas appliances installed in the space. The stan- dard method permits indoor air to be used for combustion and ven- CARBON MONOXIDE POISONING HAZARD tilation air.
Page 10: Gas Vent Installation
Other openings are caulked or sealed. These include ment air. Whichever method is used, the mixed return air tempera- joints around window and door frames, between sole ture across the heat exchanger MUST not fall below 60° F(16° C) plates and floors, between wall−ceiling joints, between continuously, or 55°...
Page 11: Horizontal Venting
WARNING Venting to Existing Masonry Chimney Dedicated venting of one fan assisted furnace into any ma- CARBON MONOXIDE POISONING HAZARD sonry chimney is restricted. A chimney must first be lined with Failure to follow the steps outlined below for each either Type B vent sized in accordance with NFGC tables 13.1 or appliance connected to the venting system being placed 13.2 or a listed metal lining system, sized in accordance with the...
Page 12 Figure 5 Other than Direct Vent Termination Clearance Item Clearance Descriptions Canadian Installation (1) U.S. Installation (2) Clearance above grade, veranda, porch, deck, balcony, or 12″ (30cm) # 12″ (30 cm) anticipated snow level 12″ (30 cm) for appliances u 10,000 Btuh (3 kW) and v Clearance to a window or door that may be opened 4′...
Page 13 6. Masonry Chimney Venting If a clay tile−lined masonry chimney is being used and it is exposed Chimney Inspection to the outdoors below the roof line, relining might be required. All masonry chimney construction must conform to Standard Chimneys shall conform to the Standard for Chimneys, Fire- ANSI/NFPA 211−2006 and to any state or local codes applicable.
Page 14: Appliance Application Requirements
Exterior Masonry Chimney, Shows signs of vent gas condensation, the chimney should be relined in accordance with local codes and the authority FAN+NAT Installations with having jurisdiction. The chimney should be relined with a Type−B Double−Wall Vent Connectors listed metal liner or Type−B vent to reduce condensation. If a condensate drain is required by local code, refer to the W NFPA &...
Page 15 CHIMNEY INSPECTION CHART Figure 6 For additional requirements refer to the National Fuel Gas Code ANSI Z223.1/NFPA 54-2009 and ANSI/NFPA 211-2006 Chimneys, Fire places, Vents, and Solid Fuel Burning Appliances in the U.S.A. or to the Canadian Installation Code CSA B149.1-05 in Canada. Crown condition: Rebuild...
Page 16: Gas Supply And Piping
7. Gas Supply and Piping WARNING Figure 7 Typical Gas Piping (*8DNL) CARBON MONOXIDE POISONING, FIRE AND EXPLOSION HAZARD Failure to follow this warning could result in Manual Gas Shutoff personal injury, death and/or property damage. Valve Models designated for Natural Gas are to be used with Natural ONLY,...
Page 17 2. Follow steps 2 through 4 Piping with Street Elbows. Piping with Street Elbows WARNING 1. Assemble the elbows so that the outlet of one(1) elbow is 90° from the inlet of the other. The elbows should be tight enough to be leak proof.
Page 18: Electrical Wiring
8. Electrical Wiring WARNING 7. Position all wires away from sharp edges and moving parts. Do not pinch J−Box or other wires when reinstalling blower compartment door. ELECTRICAL SHOCK HAZARD Thermostat Failure to follow this warning could result in personal injury or death. Thermostat location has an important effect on the operation of the furnace.
Page 19: Ductwork And Filter
Figure 12 Control Connections Electrical Connections Figure 11 115V. 60Hz. Jumper Diagnostic Light 24 VAC Connection Ground 115 VAC Thermostat FUSE 25-24-98 Low Voltage Terminal Board NOTE: 115 VAC/60Hz/single−phase 25-25-13 Operating voltage range*: 127 VAC max, 104 VAC min. * Permissible limits of voltage at which unit will operate satisfactorily Furnace Control The furnace control is preset at the factory with ON delay of 30 sec- onds in the heating mode.
Page 20 • Installation of locking−type dampers is recommended in all Duct Design branches, or in individual ducts to balance system’s air flows. Design and install the air distribution system to comply with Air • Non−combustible, flexible duct connectors are recommended Conditioning Contractors of America manuals or other approved for return and supply connections to furnace.
Page 21 Table 4 Sub−bases for Combustible Floors Dimensions − in(mm) Sub−base for Sub−base for Combustible Opening In Typical Plenum Opening In Floor Combustible Floor Dimensions Base For Plenum Dimensions Floors Part Number Subbase for Furnace Only NAHH001SB (398.5) (730.3) (369.9) 16(406.4) (412.8) 14 (371.5) 15 (381)
Page 22 CAUTION Sub-base for Combustible Floors- Downflow Coil Adapter Box REDUCED FURNACE LIFE HAZARD The subbase for combustible floors is required when a downflow furnace, used with a downflow coil box, is set on combustible Failure to follow this caution may result in reduced flooring.
Page 23 The redesigned filter bracket needs to be centered on top of the 3. Straighten up filters and pull straight down at side of blower. flanges spanning the depth of the flange opening. Position it so the Pull out through right door opening. “V”...
Page 24: Checks And Adjustments
10. Checks and Adjustments Startup Typical Gas Control Valve Figure 19 NOTE: Refer to startup procedures in the Users Information Manual. Regulator Adjustment Outlet WARNING Under Cap Pressure ELECTRICAL SHOCK, FIRE, EXPLOSION (3.2mm) HAZARD Failure to follow this warning could result in personal INLET injury, death and/or property damage.
Page 25 WARNING the input rating must be derated 5% (natural) or 10% (Propane) for each 1000′ (305m) above sea level. This may be accomplished by a simple adjustment of manifold pressure or an orifice change, or a FIRE, EXPLOSION, CARBON MONOXIDE combination of a pressure adjustment and an orifice change.
Page 26 Table 6 PROPANE GAS MANIFOLD PRESSURE (in wc) HEATING VALUE MEAN ELEVATION ABOVE SEA LEVEL − ft(m) at ALTITUDE 0 to 2000 2001 to 3000* 3001 to 4000 4001 to 5000 5001 to 6000 6001 to 7000 7001 to 8000 BTU/CU.
Page 27: Main Burner Flame Check
NOTE: It is very important to reinstall the NOx insert mounting Air Temperature Rise Check screws. CAUTION Removing NOx inserts Figure 22 REDUCED FURNACE LIFE HAZARD Failure to follow this caution may result in reduced furnace life. Use ONLY the blower motor speed taps insert indicated in the Circulation Air Blower Data for setting air temperature rise.
Page 28: Furnace Maintenance
Change the heat or cool blower motor speed by removing the Hard Wired Continuous-Fan Operation motor speed lead from the “Heat” or “Cool” terminal and re- A terminal is provided on the furnace control located in the circulat- place it with the desired motor speed lead from the “M1” or ing air blower compartment for operation of the continuous−fan “M2”...
Page 29: Sequence Of Operation & Diagnostics (*8Dnl)
12. Sequence of Operation & Diagnostics The following is the normal operating sequence. Cooling (Y) Request: 24VAC signals applied to Y & G terminals of FCB (furnace control board) • Cool motor speed is energized after 5 second Cool Fan On Delay time. Y &...
Page 30 Heating Request with Gas Shut Off: 24 VAC signal applied to W terminal of FCB. The FCB will attempt 4 cycles for ignition then go to soft lockout for 3 hours then try for ignition again as long as the heat call remains. Power reset will clear lockout.
Page 31 Save This Manual For Future Reference Downflow Models *8DNL050B12B2 *8DNL075B12B2 *8DNL075F16B2 *8DNL100F14B2 *8DNL100L20B2 *8DNL125L20B2 * Denotes Brand International Comfort Products, LLC Lewisburg, TN 37091 U.S.A. 441 01 2314 06 Specifications are subject to change without notice.
Page 32: Specifications
Model Specifications Manufacturers Number (Mfr No -See Rating Plate) ALL Models Specifications *8DNL050B12 *8DNL075B12 *8DNL075F16 *8DNL100F14 *8DNL100L20 *8DNL125L20 General Input (Btuh) 50,000 75,000 75,000 100,000 100,000 125,000 Output (Btuh) 40,000 61,000 61,000 81,000 81,000 101,000 Temp. Rise ( 35-65/19-36 35-65/19-36 35-65/19-36 35-65/19-36 30-60/17-33...
Page 33 Circulation Air Blower Data *8DNL050B12 (1) *8DNL100F14 (1) Air Delivery in CFM (L/s) Air Delivery in CFM (L/s) Furnace Rated @0.5 in wc (125 Pa) ESP Furnace Rated @0.5 in wc (125 Pa) ESP MED L MED H HIGH MED L MED H HIGH in wc...
Page 34: Wiring Diagram *8Dnl
Wiring Diagram *8DNL 441 01 2314 06 Specifications are subject to change without notice.
Page 35: International Comfort Products, Llc
INDUCED−COMBUSTION GAS FURNACE PARTS REPLACEMENT INFORMATION GUIDE CASING GROUP FILTER GROUP Flame sensor Hot surface ignitor Outer door Filter(s) − washable (1−in.) Gas valve Blower door Manual reset limit switch HEAT EXCHANGER GROUP Door bracket Burner support assembly Top filler plate Heat exchanger cell WARNING Bottom encloser...

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ICP C8DNL Installation Instructions Manual

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