Carrier 58ZAV ÐHorizontal Filter Arrangement, ÐFilter Retainer In, ÐDownflow Filter Arrangement

AIRFLOW

12″

4″ D

FIELD-SUPPLIED

FILTER RETAINERS

Fig. 11ÐHorizontal Filter Arrangement

Table 4ÐFilter Retainer (In.)

FURNACE CASING	FILTER SIZE AND	D
WIDTH	QUANTITY
14-3/16	(2) 14 X 20 X 1	14-3/8
17-1/2	(2) 14 X 20 X 1	13-3/8
21	(2) 16 X 20 X 1	11-5/8
24-1/2	(2) 16 X 20 X 1	10-1/4

AIRFLOW

INSTALLATION

POSITION

OF FILTERS

RETURN-AIR

PLENUM

ACCESS DOOR

A88486

Fig. 12ÐDownflow Filter Arrangement

Use the proper length of pipes to avoid stress on the gas control manifold. Failure to follow this warning could result in a gas leak, causing fire, explosion, personal injury, or death.

Table 5ÐMaximum Capacity of Gas Pipe *

NOMINAL IRON	INTERNAL	LENGTH OF PIPE (FT)
PIPE SIZE	DIAMETER
		10	20	30	40	50
(IN.)	(IN.)
1/2	0.622	175	120	97	82	73
3/4	0.824	360	250	200	170	151
1	1.049	680	465	375	320	285
1-1/4	1.380	1400	950	770	660	580
1-1/2	1.610	2100	1460	1180	990	900

*Cubic ft of gas per hr for gas pressures of 0.5 psig (14-in. wc) or less, and a pressure drop of 0.5-in. wc (based on a 0.60 specific gravity gas). Ref: Table 10-2 NFPA 54/ANSI Z223.1-1996.

Connect the gas pipe to the furnace using a backup wrench to avoid damaging gas controls.

Never purge a line into a combustion chamber. Never use matches, candles, flame, or other sources of ignition to check for gas leakage. Use a soap-and-water solution to check for gas leaks. Failure to follow this warning could result in fire, explosion, personal injury, or death.

Joint compounds (pipe dope) should be applied sparingly and only to the male threads of the joints. This pipe dope must be resistant to the action of propane gas.

An accessible manual shutoff valve MUST be installed upstream of the furnace gas controls and within 72 in. of the furnace. A 1/8-in. NPT plugged tapping, accessible for test gage connection, MUST be installed immediately upstream of the gas supply connection to the furnace and downstream of the manual shutoff valve. Place a ground joint union between the gas control manifold and the manual shutoff.

Install a sediment trap in the riser leading to the furnace. The trap can be installed by connecting a tee to the riser leading from the furnace. Connect a capped nipple into the lower end of the tee. The capped nipple should extend below the level of the gas controls. (See Fig. 13.)

Piping should be pressure tested in accordance with local and national plumbing and gas codes before the furnace has been attached. If the pressure exceeds 0.5 psig (14-in. wc), the gas supply pipe must be disconnected from the furnace and capped before the pressure test. If the test pressure is equal to or less than

0.5psig (14-in. wc), turn off electric shutoff switch located on the gas valve before the test. It is recommended that the ground joint union be loosened before pressure testing.

After all connections have been made, purge the lines and check for gas leakage with regulated gas supply pressure.

Step 10ÐElectrical Connections

115-V WIRING

Refer to the unit rating plate or Table 6 for equipment electrical requirements. The control system requires an earth ground for proper operation.

Do not connect aluminum wire between disconnect switch and furnace. Use only copper wire.

Make all electrical connections in accordance with the current edition of the National Electrical Code (NEC) ANSI/NFPA 70-1999, and any local codes or ordinances that might apply. For

10