substitution request - Alliance Construction Solutions

8. AC Proof Status – Both Air and Water
2.14 CONTROL SENSORS
A. The unit shall be provided with the following factory mounted and wired control devices:
1. Space Dry Bulb Temperature Sensor (field wired with economizer option)
2. Space Relative Humidity Sensor (field wired with economizer option)
3. Pool Water Temperature Sensor Defrost Controller
4. Defrost Controller
B. The unit shall be delivered with the following factory supplied sensors to be installed in the
field:
1. Cold Surface Condensation Prevention Temperature Sensor (Dew Point Reset).
C. An anti-cycle timer shall be provided in the unit control system to prevent short-cycling of the
compressor.
D. Under normal conditions, the unit fan shall operate continuously, to provide air circulation within
the pool enclosure.
E. The compressor shall not operate if the defrost thermostat set point has been reached.
Evaporator coil defrost shall be accomplished by the flow of air drawn across the coil by the unit
fan.
2.15 SEQUENCE OF OPERATION
A. Description
1. All essential operating and logic controls shall be factory mounted and wired in the unit.
Control sequences shall be designed specifically to control swimming pool environmental
conditions.
B. Humidity Control
1. When the humidity is above the set point the controller energizes the compressor and
directs hot gas to air reheat condenser. If the pool water temperature is below the set
point, the recovered heat is directed to the pool water condenser and the air reheat
condenser or the auxiliary air cooling condenser, if so equipped. If the pool water
temperature is at or above the set point, the recovered heat is directed to the air reheat
condenser or the auxiliary air cooling condenser, if so equipped.
C. Pool Water Heating
1. When the dehumidifier is in either the dehumidifying and/or air conditioning mode and
the pool water temperature is below the set point, a portion of the recovered heat is
directed to the pool water condenser. At other times when the pool water requires heat, the
PoolComPak activates the main pool water heater.
D. Space Heating
Project No.: 10145
550 15 th Street Dual Brand Hotel
03/16/2012
23 8416 - 7 MECHANICAL DEHUMIDIFICATION
UNITS