www.poolpak.com | 800-959-7725
14
| ComPak
®
Series - Installation, Operation and Maintenance
the recovered heat can be directed to an auxiliary air conditioning condenser if the system is so equipped. If the
system does not include an auxiliary air conditioning condenser, the CPCS-PCP will direct the recovered heat to
the air reheat coil until the need for dehumidification is satisfied.
Cold Surface Temperature Humidity Reset
The CPCS-PCP control system includes a sensor that measures the temperature of the coldest surface in the pool
enclosure, usually an exterior window or door frame. When the temperature of this surface approaches the
dewpoint temperature of the space, the controller lowers the humidity setpoint to activate dehumidification. This
function helps to prevent condensation on the cold surface.
Space Heating
When the compressor is running, the CPCS-PCP directs the recovered heat to the air reheat coil. Space heating
will continue until the space temperature reaches the setpoint. The CPCS-PCP will activate the auxiliary
space heating system if the ComPak® unit is unable to satisfy the heating need with heat recovered during
dehumidification. The CPCS-PCP will activate the auxiliary pool water heating system if the water temperature
cannot be satisfied with recovered heat. An auxiliary pool water heater must be supplied as part of the pool
water pump and filter system.
Networking Multiple Units
CPCS-PCP networking allows up to four ComPak® units to be connected together. The units will work with each
other to control water temperature, air temperature, and relative humidity. Networked ComPak® units have all
the features of standard ComPak® plus the ability to control water temperature in multiple pools. They also allow
system dehumidification capacity to be staged. All units on the network are accessible from a single remote
interface unit for convenience.
Space Cooling (Optional)
If space cooling is required and the unit is equipped with an auxiliary air conditioning condenser (air-cooled or
water-cooled), the CPCS-PCP will activate the space cooling mode of operation. In this mode, the heat removed
from the space air will be directed to the auxiliary air conditioning condenser. The air cooling mode of operation
is independent of the need for dehumidification.
When the ComPak® unit is equipped with a field supplied economizer, the CPCS-PCP will automatically select
the most economical method for space cooling. An economizer utilizes outside air rather than the refrigeration
system to achieve space cooling. A sensor connected to the CPCS-PCP monitors the outside air temperature.
When appropriate, the controller will disable the compressor and bring in cool outside air for economical
operation.
A separate exhaust system must be installed to ensure negative room pressure during the economizer mode.
Water Heating (Models AWV and AWH only)
If the pool water temperature is also below the set point, some of the recovered heat is directed to the pool
water condenser for pool water heating. Heating can only take place during the dehumidification when heat
is captured in the refrigeration circuit. This is only available on the Model AW, which is equipped with a pool
water condenser.
