Carrier 42V, 42C, 42D specifications A42-4125, 42SG Furred-InStack Dimensions

LEGEND

CR — Cold Water Return

CS — Cold Water Supply

D — Drain

HR — Hot Water Return

HS — Hot Water Supply

R — Return

S — Supply

ITEM	DESCRIPTION	QTY
1	Electrical Knockouts	1
2	3-in. Expanded Section	3/5
3	Strip Heater (Optional)	1
4	Limit Switch**†† (Optional)	1
5	1/2-in. Isolation Ball Valves**	2/4
6	Flexible Drain Tube/P-Trap	1
7	Coil 1/2-in. OD Copper Tube	1
8	Filter, Throwaway, 1-in.**	1
9	Return Air Opening	1
10	Air Vent, Manual	1
11	Molex Connector for Field-Installed Stat	1
12	Control Box	1
13	Knockout (For Optional Remote Mounting)	2
14	Riser, Supply and Return (Copper)	2/4
15	Riser, Drain (Copper)	1
16	Drain Pan	1
17	Return Air Blockoff Panel (Optional)	1
18	Blower	1
19	Motor, 3-Speed, PSC, with Quick Connect	1
20	Access Panel (Control Box)	1
21	Control Opening (Surface Mount Stat)	1
22	Duct Collar, 1/2-in. Extension (Typical)	1/2/3
23	Supply Air Opening(s)	1/2/3

**Factory-Installed. ††Field-Installed.

*Drawing provided for reference only. Dimensions may vary with options ordered.
NOTES:
1.	Units are fabricated of 18-gage galvanized steel with a 16-gage galvanized fan deck.
2.	All risers are insulated with 1/2-in. closed cell insulation.
3.	Thermostats shipped loose for field connection.
4.	Risers are piped to coil with valves as specified.
5.	Blower, motor, valves, coil, and filter are accessible through the return air opening.
6.	Unit and control box are insulated with 1/2-in. coated fiberglass insulation.
7.	Riser length = [(floor to floor) +2 in.], maximum riser length = 115 inches.
8.	Maximum riser size is 21/2-in. diameter. If larger sizes are required, please consult the factory.
9.	Expansion loops in hot water heating circuits as required.
10.	A 9-in. x 21/4-in. slot is provided in the inside back panel for coil connection penetration to permit expansion
	and contraction of risers. Care must be taken to position the risers so that coil connection is at center of slot.
11.	Drawing is pictorial (see unit arrangements for actual supply and return air orientation).											A42-4125
12.	All dimensions are in inches.
UNIT		NOM				DIMENSIONS (in.)								UNIT
SIZE		AIRFLOW	Single Supply		Double Supply		Top Supply		E	G	H		I	WEIGHT†
		(cfm)	A	B	A	B	C	D						(lb)
03		300	14	8	14	6	14	10	17	11/2	11/2		14	180
04		400	14	12	14	6	14	10	17	11/2	11/2		14	225
06		600	18	10	18	6	16	12	20	1	2		18	240
08		800	18	12	18	6	16	12	20	1	2		18	260
10		1000	—	—	22	8	18	16	24	1	3		22	280
12		1200	—	—	22	8	18	16	24	1	3		22	305

†Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

Fig. 28 — 42SG Furred-In Stack Dimensions

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