Lennox International Inc G24-200 G24−200 Gas Furnace, Shipping and Packing List, Safety

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G24−200 Gas Furnace

G24−200 Gas Furnace

The G24−200 upflow gas furnace is for use with natural gas only.

Each G24−200 requires the installation of a separately or- dered drive kit. The available drive kits are listed in tables 10 and 15. Provided in each drive kit is the following: the fur- nace’s blower motor, its 24 volt control transformer, and (in non-208/230 volt models) an autotransformer for each of the furnaces’s induced draft blowers.

Also available for order separately is a filter box kit for rear or bottom return air applications.

This furnace has two independently controlled heat sections, each with an input of 100MBH and each operating in a two- stage (low heat/high heat) mode. The C17−090/120 cooling coil has been designed for use with this furnace and can be connected to either a single condensing unit or to two con- densing units. (See C17 coil installation instructions.)

Shipping and Packing List

Package 1 of 3 contains:

1 − Assembled unit (vent adapters are factory-installed) 1 − Flexible gas connector

Package 2 of 3 contains:

1 − Filter box assembly Package 3 of 3 contains:

1 − Blower drive kit consisting of:

1 − Blower motor

1 − Motor pulley

1 − Belt

1 or 3 − Transformer(s)

1 − Bag assembly containing wiring parts

1 − Bag assembly containing securing hardware Check equipment for shipping damage. If you find any damage, immediately contact the last carrier.

Safety

Shipping and Packing ListWARNING

Improper installation, adjustment, alteration, service or maintenance can cause property damage, person- al injury or loss of life. Installation and service must be performed by a qualified installer, service agency or the gas supplier.

SafetyCAUTION

As with any mechanical equipment, personal injury can result from contact with sharp sheet metal edges. Be careful when you handle this equipment.

Use only the type of gas approved for use with this furnace. Refer to unit nameplate.

Lennox G24−200 units are CSA international certified to ANSI Z21.47 and CSA 2.3 standard.

In the USA, installation of Lennox gas central furnaces must conform with local building codes. In the absence of local codes, units must be installed in accordance with the current National Fuel Gas Code (ANSI−Z223.1/NFPA54). The National Fuel Gas Code is available from:

American National Standards Institute, Inc.

11 West 42nd Street

New York, NY 10036

In Canada, installation must conform with current National Standard of Canada CSA−B149.1

pane Installation Codes", local plumbing or waste water codes and other applicable local codes.

Adequate clearance must be made around the air open- ings into the vestibule area. Provisions must be made for proper operation and for combustion air and ventilation air supply according to the current National Fuel Gas Code or CSA-B149 standards.

In the U.S.A, vent installations shall be in accordance with the venting tables provided in this manual and the applica- ble provisions of local building codes.

In Canada, vent installations shall be in accordance with the venting tables in the current editions of the CSA B149 codes and the applicable provisions of local building codes.

This furnace is CSA international certified for installation clearances to combustible material as listed on unit rating plate and in table 1. Accessibility and service clearances must take precedence over fire protection clearances.

TABLE 1

INSTALLATION CLEARANCES INCHES (mm)

CLEARANCE

VENT CONNECTOR TYPE

TYPE C

TYPE B1

 

TOP

1 (25)

1 (25)

FRONT*

3 (76)

3 (76)

 

 

 

BACK

0

0

 

 

 

SIDES

0

0

VENT

6 (152)

1 (25)

 

 

 

FLOOR

0**

0**

*Front clearance must be 24 inches (610mm) minimum for service access.

**For installation on combustible floors, appliance shall not be installed directly on carpeting, tile, or other combustible materi- al other than wood flooring.

Maintain adequate clearance for filter access. See section on

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Contents P504613M INSTALLATION INSTRUCTIONS G24-2002P0805 WHAT TO DO IF YOU SMELL GASG24−200 Unit Dimensions − inches mm PageBACK VIEW G24−200 Filter Box Dimensions − inches mmSIDE VIEW TOP VIEWG24−200 Parts Arrangement G24−200 HEAT SECTION AND CABINETPage G24−200 Parts Arrangement Continued G24−200 BLOWER SECTIONPage Safety G24−200 Gas FurnaceShipping and Packing List setting General Combustion, Dilution & Ventilation AirCements and glues EQUIPMENT IN CONFINED SPACE ALL AIR FROM INSIDE Setting Equipment Return Air Plenum / Filter Box InstallationBOTTOM RETURN AIR FILTER BOX INSTALLATION PageBlower Motor / Drive Installation Duct SystemVenting Venting Using a Masonry Chimney Page Page SERVING A SINGLE CATEGORY I APPLIANCE PageSERVING A SINGLE CATEGORY I APPLIANCE PageSERVING TWO OR MORE CATEGORY I APPLIANCES VENT CONNECTOR CAPACITYSERVING TWO OR MORE CATEGORY I APPLIANCES COMMON VENT CAPACITYPage CARBON MONOXIDE POISONING HAZARD FOR INSTALLATIONS IN THE USA AND CANADA VENT TERMINATION CLEARANCESPage Horizontal Venting Gas Piping FIRE OR EXPLOSION HAZARD Electrical box right side G24−200 FIELD WIRING DIAGRAM 120V SINGLE PH 60HZAlternate make-up Alternate make-upG24-200FIELD WIRING DIAGRAM J UNITS − 575V 3PH 60HZ G24−200 FIELD WIRING DIAGRAMG UNITS − 460V 3PH 60HZ Alternate make-upFIGURE Page Y UNITS − 208/230V 3PH 60HZ WIRING SCHEMATIC DIAGRAM FOR G24−200P UNITS − 208/230V 1PH 60 HZ G UNITS − 460V 3PH 60HZUnit Start−Up Heating Sequence of Operation Gas Pressure Adjustment Other Unit Adjustments and OperationHigh Altitude Information Temperature Rise Setting blower CFM TABLE ACCESSORY AIR RESISTANCE TABLE DRIVE KIT SPECIFICATIONSPage Repair Parts List G24−200 Start−up and Performance Check ListABNORMAL HEATING MODE TroubleshootingNORMAL HEATING MODE PageABNORMAL HEATING MODE 3 − OFF NO POWER OR DETECTED FAULTNORMAL HEATING MODE LED CODESPOWER ON THERMOSTAT CALLS FOR HEAT W1 ENERGIZED IS THE S10 S99 HIGH LIMIT CLOSED? YES FOR A SINGLE CONDENSING UNIT COOLING SEQUENCE OF OPERATIONFOR TWO CONDENSING UNITS MANUAL FAN OPERATION