Daikin ERQ, Service Manual

Page: 59 / 260

ESIE09-05 X, Y, Z Control
Control Box 49
2. X, Y, Z Control
The D, F, M boxes have different types of control, giving the ability to control different
temperatures (Td, Ts, Tr, Te or Tc).
Schematic:
Legend:
EKEQD: Z-control
EKEQF: X, Y-control
EKEQM: Z-control
2.1 X-Control
Control of air temperature (Td, Ts or Tr) by means of an external device (DDC controller, 0-10V
control).
Components for control:
„ DDC (field supply)
„ Air thermistor (field supply)
„ BRC1D (only for servicing)
++ Possibility for Td control
Flexibility in applications
-- Higher cost (DDC needed)
In case of X-control, a DDC-controller is needed to operate the unit. This DDC-controller is field
supply but in order to connect it to our ERQ-system, it is required that it emits a 0-10 VDC signal
towards the control box.
T
d
Discharge air control
T
s
Suction air control
T
r
Room air control
T
e
Evaporating temperature control
T
c
Condensing temperature control
AHU Air handling unit
DDC Digital controller
AHU
Te
Td
Ts
DDC
ROOM
Tr
DDC
T
set
T
measured 0~10 V
output
10V
5V
0V
T
set
T = T
set
- T
measured
T
measured
= T
d
, T
s
or T
r
Все каталоги и инструкции здесь: http : //splitoff.ru/tehn-doc.html