YORK VRF Air-Conditioner IOM
9
10.7 Install the controller
z
Install the wire controller on the pre-reserved site
on the wall.
z
Carcassing for communication wiring should be
ready before installation the controller. The
recommended communication line is RVSP2
h
0.75. Be sure to pull the wires through the PVC
conduit.
Note: the communication wire and PVC conduit
are the field supplied parts.
10.8 Connect the wire controller and indoor unit
z
Group control can be realized through the wire
controller. For YDCC-B (C, D) series indoor unit,
one wire controller can connect to max 4 indoor
units.
Note: indoor unit series type of A, B, C and D is
determined by the specific letter in the bar code
attached on the unit. For example, indoor unit
YDCC*****-*C* means C type series unit and
YDCC*****-*B* means B type.
z
The indoor units in one group should be
connected in a same power supply to guarantee
normal initialization of wire controller when
power on.
z
Connection of indoor unit and wire controller:
(a) One wire controller connecting only one
indoor unit: (refer to the wiring diagram)
(b) One wire controller connecting multi indoor
units:
For YDCC-B (C, D) series indoor unit, wiring
diagram of wire controller and the indoor
units is shown in Fig. 14.
Fig. 13
One wire controller connects to multi indoor units (B, C or D type)