York YDCC06-45 Installation Manual page 11

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
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
Fig. 13
YORK VRF Air-Conditioner IOM
One wire controller connects to multi indoor units (B, C or D type)
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.
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