Page 491 - General Catalogue

INTRODUCTION
Daikin Fresh air package - Controls

In order to maximise installation flexibility,
AIR PURIFIER
4 types of control systems are offered

W control: Off the shelf control of air temperature (discharge Z control: Control of air temperature (suction temperature, room
temperature, suction temperature, room temperature) via any temperature) via Daikin control (no DDC controller needed) HEATING
DDC controller, easy to setup Y control: Control of refrigerant (Te/Tc) temperature via Daikin
X control: Precise control of air temperature (discharge temperature, control (no DDC controller needed)
suction temperature, room temperature) requiring
a preprogrammed DDC controller (for special applications)
SPLIT
2. X control (T /T /T ROOM control):
R
S
1. W control (T /T /T control):
S R ROOM
Precise air temperature control via DDC controller
Air temperature control via DDC controller Room temperature is controlled as a function of the air handling
Room temperature is controlled as a function of the air handling unit suction or discharge air (customer selection). The DDC
unit suction or discharge air (customer selection). The DDC controller is translating the temperature difference between set SKY AIR
controller is translating the temperature difference between set point and air suction temperature (or air discharge temperature
point and air suction temperature (or air discharge temperature or room temperature) into a reference voltage (0-10V) which is
or room temperature) into a proportional 0-10V signal which is transferred to the Daikin control box (EKEQFCBA). This reference
transferred to the Daikin control box (EKEQFCBA). This voltage voltage will be used as the main input value for the compressor
modulates the capacity requirements of the outdoor unit. frequency control. VRV
OR
OR
OR OR
AHU AHU
AHU
AHU
T EXT T EXT
T EXT
T EXT
0-10V Daikin control box: T R T R 0-10V Daikin control box: T R T R
Control box
Control box
DDC
DDC EKEQFCBA + DDC EKEQFCBA +
DDC
EKEQFCBA
EKEQFCBA
T T E T C T T E T C
VENTILATION & BID- DLE AIR CURTAINS
T OA OA T S T S T OA OA T S T S
- -
T ROOM T ROOM
T ROOM T ROOM
3. Y control (T /T control): 4. Z control (T /T control):
E C S ROOM
By fixed evaporating /condensing temperature Control your AHU just like a VRV indoor unit MARINE TYPES
A fixed target evaporating or condensing temperature can be set with up to 100% fresh air
by the customer. In this case, room temperature is only indirectly Allows the possibility to control the AHU just like a VRV indoor
controlled. A Daikin wired remote control (BRC1* - optional) have unit. Meaning temperature control will be focused on return air
to be connected for initial set-up but not required for operation. temperature from the room into the AHU. Requires BRC1* for
operation. The only control that allows the combination of other CHILLERS
indoor units to the AHU at the same time.
AHU
AHU
T EXT T R T R
T EXT
BRC1D* Control box
BRC1D*
Control box
BRC1E* + Control box T EXT T R T R
T EXT
EKEQFCBA
BRC1E*
Control box
BRC1D*
BRC1H* EKEQFCBA T T E C T BRC1D* EKEQMCBA (VRV IV)
BRC1E*
T OA OA T S T S BRC1E* EKEQMCBA (VRV IV) +
- BRC1H* EKEQDCB (ERQ)
EKEQDCB (ERQ)
T OA T E T C T S
T OA
- -
T ROOM FAN COIL UNITS
OR
T ROOM
OR
T ROOM
T ROOM
AIR HANDLING UNITS
T = Supply air temperature T = Return air temperature T = Outdoor air temperature T ROOM = Room air temperature
OA
S R
T = Extraction air temperature T = Evaporating temperature T = Condensing temperature
C
EXT E
REFRIGERATION
Option kit Features
Possibility W Off-the-shelf DDC controller that requires no pre-configuration
Possibility X EKEQFCBA Pre-configured DDC controller required
Possibility Y Using fixed evaporating temperature, no set point can be set using remote control
EKEQDCB Using Daikin infrared remote control BRC1*
Possibility Z
EKFQMCBA* Temperature control using air suction temperature or room temperature (via remote sensor)
CONTROL SYSTEMS
* EKEQMCB (for ’multi’ application)
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