Lennox International Inc G24-200 Equipment In Confined Space All Air From Inside

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EQUIPMENT IN CONFINED SPACE

EQUIPMENT IN CONFINED SPACE

ALL AIR FROM INSIDE

CHIMNEY

OR GAS

VENT

G24−200

FURNACE

OPENINGS

(To Adjacent

Room)

NOTE−Each opening shall have a free area of at least one square inch (645 mm2) per 1,000 Btu (.29 kW) per hour of the total input rat- ing of all equipment in the enclosure, but not less than 100 square inches (64516 mm2).

FIGURE 1

When ducts are used, they shall be of the same cross−sec- tional area as the free area of the openings to which they connect. The minimum dimension of rectangular air ducts shall be no less than 3 inches (75 mm). In calculating free area, the blocking effect of louvers, grilles, or screens must be considered. If the design and free area of protec- tive covering is not known for calculating the size opening required, it may be assumed that wood louvers will have 20 to 25 percent free area and metal louvers and grilles will have 60 to 75 percent free area. Louvers and grilles must be fixed in the open position or interlocked with the equipment so that they are opened automatically during equipment operation.

EQUIPMENT IN CONFINED SPACE ALL AIR FROM OUTSIDE (Inlet Air from Crawl Space and Outlet Air to Ventilated Attic)

CHIMNEY OR

GAS VENT

VENTILATION LOUVERS

(Each end of attic)

	G24−200	OUTLET
		AIR
	FURNACE

VENTILATION

LOUVERS

(For unheated crawl space)

INLET

AIR

NOTE−The inlet and outlet air openings shall each have a free area of at least one square inch (645 mm2) per 4,000 Btu (1.17 kW) per hour of the total input rating of all equipment in the enclosure.

FIGURE 2

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Image 10

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 HEAT SECTION AND CABINET G24−200 Parts ArrangementPage G24−200 BLOWER SECTION G24−200 Parts Arrangement ContinuedPage G24−200 Gas Furnace SafetyShipping 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 VENT TERMINATION CLEARANCES FOR INSTALLATIONS IN THE USA AND CANADAPage 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 Other Unit Adjustments and Operation Gas Pressure AdjustmentHigh Altitude Information Temperature Rise Setting blower CFM TABLE DRIVE KIT SPECIFICATIONS TABLE ACCESSORY AIR RESISTANCEPage 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