Lennox International Inc G24-200 installation instructions Horizontal Venting

Horizontal Venting

This furnace design is certified by CSA international for horizontal venting through an outside wall, only with the use of two Field Controls Company Model SWG-4L side- wall venting kits, available from any Lennox Dealer Service Center. No other Field brand venting kits or any other manufacturer’s venting kits are acceptable. Horizontal venting of this furnace without the use of the above stated kits is prohibited.

NOTE − Each heat section of the G24−200 unit re- quires its own sidewall venting kit. The two venting systems shall be completely separate starting at the outlet of each heat section and ending with the vent terminal of each Field Controls Venting Kit. (See fig- ure 12 for field wiring of the two sidewall horizontal venting kits.)

When horizontally vented, the minimum clearance for terminations from electric meters, gas meters, regula- tors and relief equipment is 4 ft. (1.2m) for US installa- tions. Refer to the current CSA−B149.1 for installations in Canada or with authorities having local jurisdiction.

At vent terminations, care must be taken to maintain pro- tective coatings over building materials (prolonged expo- sure to exhaust condensate can destroy protective coatings). It is recommended that the exhaust outlet not be located within 6 feet (1.8 m) of a condensing unit be- cause the condensate can damage the painted coating.

WIRING FOR SIDEWALL VENTING KITS (Two kits are required − one for each heat section.)

FIELD INSTALLED WIRING

								24 VAC
							THERMOSTAT
					W1	W2	R	Y1	Y2	C	G
	CK−43 CONTROL BOX
				2	5
				1
	PRESSURE			3	4
	SWITCH
				RELAY
C	NO				W1	W2	R	Y1	Y2	C	G
	L1	N	M	T1 T2 T3

FACTORY INSTALLED WIRING

CK−43 CONTROL BOX

				2	5
				1
	PRESSURE			3	4
	SWITCH
				RELAY
C	NO
	L1	N	M	T1 T2 T3

M

SWG	TERMINAL STRIP FOR THERMOSTAT
POWER
	CONNECTIONS IN FURNACE JUNCTION BOX
VENTER

MOTOR

M

SWG

POWER VENTER MOTOR

L1 L2

120VAC

FIGURE 12

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