Specifications

RDNO ATHLETIC PARK
AMENITIES BUILDINGS
WE File No.029042.00
May 30, 2014
31 | P a g e
.1 MUA-2 shall operate in occupied/unoccupied mode according to a user defined
schedule.
.2 When MUA-2 is operating in occupied mode the outdoor air dampers, fans and
the refrigeration compressors shall operate in sequence to maintain the supply
air temperature at setpoint.
.3 The space temperature setpoint shall be 14°C (58°F) in winter and 24°C (75°F)
in summer.
.4 The refrigeration compressor shall be locked out from operating when the
outdoor air temperature is below 10°C [50°F ].
.5 The refrigeration compressor control sequences shall contain minimum on and
minimum off times as recommended by the manufacturer.
.3 Fail safe Mode:
.1 In the event of a power failure, all systems shall revert to off position and restart
when power is restored if required.
.2 System shall stop if SAT set point is not maintained. Revert to failsafe position.
.3 DDC provides alarm if failure or high/low space temperature alarm
41.3 Classroom Control
.1 General:
.1 The Classroom system consists of the following major components:
.1 Fan Coil Unit FCU-1.
.2 Exhaust Fan EF-4
.3 Condensing Unit CU-3
.4 Temperature Sensor
.5 Occupancy Sensor c/w push button over-ride.
.6 Modulating outdoor air/return air damper
.2 Operation:
.1 Unoccupied Mode:
.1 During unoccupied mode the Fan Coil unit shall normally be off.
.2 When the classroom requires heating during unoccupied mode FCU-1 shall start
and operate until space temperatures are achieved and for a minimum of 15
minutes. The outside air dampers shall remain closed and EF-4 off at all times
during unoccupied mode.
.3 If a space sensor push button over-ride is activated, FCU-1 shall start and
operate in occupied mode. Pushing and holding the over-ride button for more
than 3 seconds shall return the classroom to unoccupied mode.
.2 Occupied Mode:
.1 FCU-1 shall operate in occupied/unoccupied mode according to a user defined
schedule.
.2 When FCU-1 is operating in occupied mode the mixed air dampers, fan and the
refrigeration compressors shall operate in sequence to maintain the supply air
temperature at setpoint.
.3 The space temperature setpoint shall be 14°C (58°F) in winter and 24°C (75°F)
in summer.
.4 The refrigeration compressor shall be locked out from operating when the
outdoor air temperature is below 10°C [50°F ].
.5 The refrigeration compressor control sequences shall contain minimum on and
minimum off times as recommended by the manufacturer.