Emerson ITR manual Chilled Water Self-Contained Systems Chilled Water Coil, Flow Switch Optional

Electrical Data

Single Glycol Pump Package (Standard)

This system shall be provided with a centrifugal pump mounted in a weatherproof and vented enclo- sure. The pump shall be rated for GPM (l/s) at _____ ft. of head (kPa), and operate on _____ Volt,

3 phase, _____ Hz.

Dual Glycol Pump Package (Optional)

The dual pump package shall include pumps, enclosure, and field mounted flow switch. The pumps shall be wired to the drycooler control box which includes a lead/lag switch for the pumps. The standby pump shall automatically start upon failure of the lead pump. Each pump shall be rated for

_____ GPM (l/s) at _____ feet of head (kPa).

2.4Chilled Water Self-Contained Systems Chilled Water Coil

The cooling coil shall have a minimum of _____ sq. ft. (sq. m) face area, _____ rows deep. The coil shall

be controlled by a modulating control valve. The chilled water coil shall be designed for closed-loop applications using properly maintained water. It shall be configured as a V-frame and be constructed of copper tubes and aluminum fins and have a maximum face velocity of _____ ft. per minute (m/s) at

_____ CFM (CMH). The water circuit shall be designed to distribute water into the entire coil face

area. The coil shall be supplied with _____ °F (°C) entering water temperature, with a _____ °F (°C)

temperature rise. The coil shall be supplied with _____ GPM (m/s) of chilled water and the pressure

drop shall not exceed _____ PSI (kPa). The coil assembly shall be mounted in a stainless steel conden-

sate drain pan.

Three-way Chilled Water Valve (Standard)

The water circuit shall include a three-way modulating valve. The microprocessor control shall posi- tion the valve in response to room conditions. Cooling capacity will be controlled by bypassing chilled water around the coil.

Two-way Chilled Water Valve (Optional)

The water circuit shall include a two-way modulating valve. The microprocessor control shall position the valve in response to room conditions. The minimum close-off pressure of the valve/actuator assem- bly shall be _____ PSI (kPa).

Design Pressure

The chilled water circuit shall be designed for a pressure of [(150 PSI (1034 kPa)) (400 PSI (2758 kPa))].

Flow Switch (Optional)

The flow switch shall activate the alarm system should the chilled water supply be interrupted. The switch shall be factory mounted and wired.

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