70 Product Manual WHR-2
Through-the-Door Handle Kits
Kits are available for 225, 250, 400, 600, 800 and 1200 amps. To select the proper kit, refer the
maximum fuse data in the catalog for the desired chiller and voltage. Select the kit size that is equal
to the maximum fuse size. If an exact match is not listed, it is acceptable to use the closest size kit
that exceeds the maximum fuse size.
Circuit Breakers
Factory installed circuit breakers are available as an option of unit sizes WHR 040 through 090 with
single point power supply. Circuit breakers are standard on unit sizes WHR 017 through 030 and
WHR 095 through 210 with single point power. This option provides unit installed compressor
short circuit protection.
Alarm Bell
A field installed 24 volt alarm bell signals safety trip of the freeze protection pressurestat, high
pressure cutout, oil failure cutout, or motor overload. The bell is factory mounted on the unit
control center. A time clock is also available with a spring carryover. During normal operation, the
spring is wound to operate the clock for up to ten hours should the power be lost to the unit.
Short Circuit/Overload Protection (Supplemental Overloads)
Factory mounted companion trip automatic circuit breakers are available per compressor. External
(supplemental) overloads added per compressor (in addition to standard compressor internal
overload protection) is available on 40 tons and above.
Phase Loss/Voltage Protection
A field installed option- phase loss with under/over voltage protection and multiple LED indication
of fault type.
High Return Water Unloading
(WHR 040 through 210)
A field installed high return water unloading thermostat is available for applications where the
return water temperature to the evaporator exceeds an adjustable setpoint for short periods of time
at startup.
Acoustical Compressor Enclosure
(WHR 017 - WHR 080 and WHR 095 – WHR 155)
A factory installed acoustical compressor enclosure is available for all units when low sound levels
are a consideration. The sheet metal enclosure is acoustically lined with 1 inch fiberglass
insulation.
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