Emerson 3000 installation manual Piping Considerations, Drain Line, Piping connection size

Installation (Applicable to all Models)

2.5Piping Considerations

All piping below the elevated floor must be located so that it offers the least resistance to air flow. Careful planning of the piping layout under the raised floor is required to prevent the air flow from being blocked. When installing piping on the subfloor, it is recommended that the pipes be mounted in a horizontal plane rather than stacked one above the other. Whenever possible, the pipes should be run parallel to the air flow.

Condensate pumps for downflow units are shipped separately to be field-installed under the raised floor. Pump height is 11 in. (279mm).

2.5.1Drain Line

A 3/4" (19.1mm) female pipe thread (FPT) connection is provided for the evaporator coil condensate drain. This drain line also drains the humidifier, if applicable. The drain line must be located so it will not be exposed to freezing temperatures. The drain should be at least the full size of the drain connection and pitched a minimum of 1/8" per ft. (11mm per meter).

NOTICE

Risk of water backing up in the evaporator coil drain line. Can cause the drain pan to overflow, resulting in building and equipment damage.

Do not install an external trap in the drain line of units without a condensate pump. This line already has a factory-installed trap inside the cabinet.

NOTICE

Risk of drain line damage. Can cause water leaks resulting in furniture, equipment and building damage.

This line may contain boiling water. Select appropriate drain system materials.

Units with a condensate pump will require a field-supplied trap downstream from the pump. The drain line must comply with all applicable national, state and local plumbing codes.

Table 2	Piping connection size
Air-Cooled Unit Connection Sizes—in.
Model No. BF/BU		Liquid Line O.D. Copper	Hot Gas Line OD Copper
	(50 Hz)	L	HG
	042A (040A)	3/8	5/8
	067A (065A)	1/2	7/8
Split System Fan Coil Unit		Connection Sizes—in.
Model No. BF/BU (50 Hz)		Liquid Line	Suction Line
		L	SC
	036E (035E)	5/8 - 18 Female (#6 QC)	1-1/8 - 12 Female (#11 QC)
	060E (059E)	1/2 OD Cu	1-1/8 OD Cu
All Units: Connection Sizes—in.
	Humidifier Line	Condensate	Condensate Pump Line	Hot Water Reheat
	OD Copper	Drain Line	OD Copper	OD Copper
	H	C	P
				Supply	Return
	1/4	3/4 FPT	1/2	HWS	HWR
				5/8	5/8
Water/Glycol-Cooled Unit		Connection Sizes—inches
Model No. BF/BU		Supply Line	Return Line
	(50 Hz)	S	R
046WG (045WG)		7/8	7/8
071WG (070WG)		1-1/8	1-1/8
GLYCOOL Unit Connection		Sizes —in.
Model No. BE/BK		Supply Line	Return Line
	(50 Hz)	S	R
	061G (058G)	1-1/8	1-1/8

Liebert® Challenger 3000™ 10