Emerson 3000 7.6.1Piping Considerations, 7.6.2Condenser Water Requirements, 7.6.3Regulating Valve

Split System Models

7.6Water and Glycol-Cooled Condensing Units

For installation guidelines, refer to Installing the Indoor Condensing Unit on page 65.

7.6.1Piping Considerations

It is recommended that manual service shut-off valves be installed at the supply and return line to each unit. This will provide for routine service or emergency isolation of the unit.

When the water source for the condenser is of poor quality, it is good practice to provide cleanable fil- ters in the supply line. These filters will trap the particles in the water supply and extend the service life of the water-cooled condenser.

3-Ton Connection Sizes

Condenser Water Inlet	7/8" OD Cu
Condenser Water Outlet	7/8" OD Cu
Suction Line	1-1/8 - 12 male #11 quick connect
Liquid Line:	5/8 - 18 male #6 quick connect
5-Ton Connection Sizes
Condenser Water Inlet	1-1/8" OD Cu
Condenser Water Outlet	1-1/8" OD Cu
Suction Line	1-7/16" - 16 male #12 quick connect
Liquid Line	1-1/16" - 12 male #10 quick connect

Table 32 Water and glycol-cooled condensing unit data

	Net Weight,	Glycol Volume,
Model	lb (kg)	gal (l)
MC_44W	200 (91)	1.7 (6.4)
MC_43W
MC_69W	282 (128)	2.0 (7.6)
MC_68W

7.6.2Condenser Water Requirements

The standard maximum water pressure is 150 psig (1034 kPa). For applications above this pressure, consult the factory about high pressure systems.

The system will operate in conjunction with a cooling tower, city water, or drycooler.

7.6.3Regulating Valve

For details, refer to sections 4.3.1 - Standard Valve - 150psig (1034kPa) System for 3 & 5-Ton

Units (Johnson Controls Valve) High Pressure Valve - 350psig (2413kPa) System for 5-Ton Units (Johnson Controls Valve) and 4.3.2 - High Pressure Valve - 350 psig (2413 kPa) System for 3-Ton Units (Metrex Valve).

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