Carrier 58ZAV operating instructions ÐFloor and Plenum Opening Dimensions, ÐOpening Dimensions In

	A
	PLENUM
	OPENING
B	D
	FLOOR
	OPENING
	C

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	Fig. 5ÐFloor and Plenum Opening Dimensions
	Table 3ÐOpening Dimensions (In.)
FURNACE		PLENUM OPENING		FLOOR OPENING
CASING	APPLICATION
		A	B	C	D
WIDTH
	Non-Combustible Flooring	12-11/16	19	13-3/8	19-5/8
14-3/16	Combustible Flooring Using KGASB Subbase	11-13/16	19	13-7/16	20-3/8
	Combustible Flooring with CD5 or CK5 Coil Assembly or	12-5/16	19	13-5/16	20
	KCAKC Coil Box
	Non-Combustible Flooring	16	19	16-5/8	19-5/8
17-1/2	Combustible Flooring Using KGASB Subbase	15-1/8	19	16-3/4	20-3/8
	Combustible Flooring with CD5 or CK5 Coil Assembly or	15-1/2	19	16-1/2	20
	KCAKC Coil Box
	Non-Combustible Flooring	19-1/2	19	20-1/8	19-5/8
21	Combustible Flooring Using KGASB Subbase	18-5/8	19	20-1/4	20-3/8
	Combustible Flooring with CD5 or CK5 Coil Assembly or	19	19	20	20
	KCAKC Coil Box
	Non-Combustible Flooring	23	19	23-5/8	19-5/8
24-1/2	Combustible Flooring Using KGASB Subbase	22-1/8	19	23-3/4	20-3/8
	Combustible Flooring with CD5 or CK5 Coil Assembly or	22-1/2	19	23-1/2	20
	KCAKC Coil Box

to attach any portion of return-air duct. Bypass humidifier connec- tions should be made at ductwork or coil casing sides exterior to furnace.

Step 5ÐDownflow Installation

NOTE: This furnace is approved for use on combustible materials or wood flooring. A factory accessory floor base, as listed on the furnace rating plate, MUST be used. A factory accessory floor base is not required when this furnace is installed on manufactur- er's Coil Assembly Part No. CD5 or CK5, or Coil Box Part No. KCAKC is used.

1.Determine application being installed from Table 3.

2.Construct hole in floor per dimensions specified in Table 3 and Fig. 5.

3.Construct plenum to dimensions specified in Table 3.

4.If downflow subbase (KGASB) is used, install as shown in Fig. 6.

If coil assembly CD5, CK5, or Coil Box KCAKC is used, install as shown in Fig. 7.

Step 6ÐHorizontal Attic Installation

Do not install the furnace on its back; safety control operation will be adversely affected. Never connect return-air ducts to the sides or back of the furnace. Failure to follow this warning could result in fire, personal injury, or death.

The furnace can be installed horizontally on either the left-hand (LH) or right-hand (RH) side. A typical attic installation is shown in Fig. 8.

CONSTRUCT A WORKING PLATFORM

Construct working platform on location where all required furnace clearances are met. (See Fig. 2 and 8.)

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