Johnson Controls HIDH018B21S, Engineering Manual

Page: 428 / 668

CONTROL SYSTEM
6-112
TC-15001-rev.3
[Group and Block]
Ɣ Group (Remote Control Group):
A group indicates the minimum number of operating units controlled by the large central controller,
with multiple indoor units , with a maximum of 16 units, are connected by way of communication
cables. The indoor units in the same group are controlled in the same operation with a maximum of
64 groups (4 blocks x 16 groups), controlled by a single large central controller.
Ɣ Block:
A block is an operation unit for a group. A maximum of 16 groups can be registered within one block.
A maximum of four blocks can be controlled by the one large central controller.
Ɣ Main Unit:
The main unit registration is available for only one indoor unit per one group.
A control command is sent from the large central controller to the main unit for the group.
Ɣ Sub Unit:
The sub unit is an indoor unit except the main unit in the same group. Sub units are controlled by the same
operation with the main unit.
<Main Unit Registration>
Ɣ The main unit registration is available for only one indoor unit for one group. Thus, duplicate
registration of the main unit is not possible in the same group. If the main unit registration is changed
for some reason, cancel the current main unit registration, and register the main unit again.
Ɣ When the indoor unit with a fan speed of 4-touch and 3-touch are paired together in the remote control
group, register as the main unit, that indoor unit equipped with a 4-touch fan speed. Note that if a
3-touch is registered as main unit, the group fan speed setting will be 3-touch only.
Ɣ When an indoor unit equipped with automatic louver swing and an indoor unit not equipped with
automatic louver swing are co-mingled into the same group, do not register the indoor unit without
automatic louver swing as the main unit. If it is registered as the main unit, this group cannot utilize the
louver setting function.
Ɣ If a group in which the communication cabling connecting a wired controller is not used, the indoor unit
without a wired controller should not be registered as the main unit.
<Sub Unit Registration>
Ɣ It is possible to register up to 15 sub units in the same remote control group with a main unit. (It is not
possible to register more than 16 sub units.)
Ɣ The indoor unit not equipped with a wired controller cannot be registered as a sub unit. Always
register it as a main unit only.
Ɣ If a sub unit is registered in another group, cancel the registration of target sub unit and register it
again to a different group.
CCL01
Group Group Group Group Group Group
Block
Without
Communication
Cable
Block
Outdoor Unit
Indoor Unit
Wired Controller
One Wired Controller
equals to one group. One unit is also
handled as one group.
Without a Wired Controller,
one indoor unit equals to
one group.