Built for the Industrial and Commercial Markets 　


Composition

• Structure

- Self-supporting frame is made from painted steel plate with

galvanized steel screws and bolts to ensure the protection

against rust and corrosion.

• Compressor:

- Scroll compressors are used in models034and 040; semi-

hermetic screw compressors are used in models 050 to 773.

• Heat exchanger

- Shell and tube type, dry expansion evaporators are

insulated with closed-cell foam material for reduced heat

loss. All evaporators are incorporated with temperature

probe for anti-freeze protection.

• Electronic control panel

The electrical panel consists of

- Main switch

- Power and auxiliary circuit fuses

- Compressor contactors

- Air pressure switch

- Microprocessor for control of the following functions:

Water temperature control

Anti-freeze protection

Compressor operation timing

Compressor automatic start-up sequence

Alarm signals

Alarm reset

- Digital display of:

Entering and leaving water temperatures

Temperature and differential settings

Alarm description

Hour meters readout of operation and number of unit

and compressor start-up

High and low pressures



• Control and safety devices

- Manual reset high pressure switch

- Automatic reset low pressure switch

- Compressor over temperature protection



• Refrigerant

- R22 ， R407C， R134A types are available.