HP A0554832 manual Optional Features

2-5 Optional Features

Options marked with “*” indicate options that can be factory installed or retrofitted in the field.

Automatic Water Make-Up*.Not available on chillers less reservoir tank. Includes a pressure-regulating valve set at 3 to 5 psi, an electric water solenoid valve, a float switch mounted in the reservoir tank, and the necessary internal piping to connect the chiller to a make-up water source. See Appendix for typical piping diagrams.

Caution! Customer piping must provide backflow protection and venting of tank to atmosphere to prevent over-pressurization of the reservoir tank. See Central and Gravity Return Piping with Standpipe Diagram on page 64.

Process Water Sidestream Filter*. Not available on chillers less pump and reservoir tank. Includes a 50 micron filter, flow meter, ball valve for throttling water flow, and the necessary piping to provide constant filtering of the process water at about one gallon per minute (1 gpm/3.8lpm).

General Fault Indicator Audible Alarm*. Includes an 85 dB @ 2 ft. audible alarm buzzer and silence button with provisions for customer wiring indication interlock. The alarm signals anytime that a fault is recognized during the operation of the chiller.

General Fault Indicator Audible/Visual Alarm*. Includes a 100 dB @ 10 ft. audible alarm horn/ 108,000 peak candlepower 80-flash/min. visual alarm strobe and silence button with provisions for customer wiring indication interlock. The alarm signals anytime that a fault is recognized during the operation of the chiller.

Compressor Hour Meter*. Includes a DIN-mount hour meter that keeps track of the total time that the compressor runs.

Communications Options. RS-232C and RS-485 communications standards are available.

Recirculation Pump. Necessary whenever process water flow is less than 2.2 gpm per ton (8.3 lpm per 3.517 kW) or greater than 4.8 gpm per ton (18.2 lpm per 3.517 kW).

High Pressure Fans. Provides for an additional 0.30”WC (75 pa) of static pressure on fan discharge. High-pressure fans are necessary and must be included in chiller installations where exiting air exhausts through ductwork.

The fans are available on 5 to 15 hp air-cooled chillers. They can be retrofitted without sheet metal modification, but will require changing out fan blades, and in some cases, fan motors and electrical components. 20 hp to 30 hp models come standard with squirrel cage blowers, which can be ducted.

Variable Speed Fan. Available on 5 to 15 hp air-cooled chillers. Reduces the speed of the fan based on entering air temperature and system load, allowing the chiller to operate in ambient temperatures below 60ºF (15.5ºC). This option will also reduce fan noise in ambients below 95ºF (35ºC).

Crankcase Pressure Regulating (CPR) Valve. Required on chillers operating at leaving water temperatures from 66ºF to 75ºF (10ºC to 24ºC). This valve prevents compressor motor overloading.

2-40 HP Portable Chillers Chapter 2: Functional Description 14 of 78