Johnson Controls YVAHP072B31S, Service Manual

Page: 486 / 1796

1-470
Service Manual
INSTALLATION
[Group and Block]
Ɣ Group:
Indicates the minimum number of operational units controlled by one mini central controller. One remote
control group is considered as one group, and the same setting will be applied. A maximum of 32 groups (4
blocks x 8 groups, 8 blocks x 4 groups, 2 blocks x 16 groups, 16 blocks x 2 groups) can be controlled by
one mini central controller.)
Ɣ Block:
Indicates the number of operational units combining groups into one. The mini central controller can
regulate indoor units depending on the control patterns (4 blocks x 8 groups, 8 blocks x 4 groups,
2 blocks x 16 groups, 16 blocks x 2 groups).
Ɣ Remote Control Group:
Indicates multiple indoor units (a maximum of 16) connected by communication line to the wired
controller. Indoor units registered as same the remote control group are applied using the same settings.
Ɣ Main Unit:
Indicates the representative unit of the remote control group. The mini central controller transmits control
commands to this representative unit.
Ɣ Sub Unit:
Indicates indoor units other than 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 for the same group. If the main unit registration is
changed for some reason, cancel the current main unit registration, and register the new main
unit again.
Ɣ When the indoor units with fan speeds of “4-touch” and “3-touch” are intermixed in the same remote
control group, register the indoor unit with a fan speed of “4-touch” as the main unit. If an indoor unit
with a “3-touch” fan speed is registered as the main unit, a “4-touch” fan speed setting cannot be
applied for this group. In other words, designate the main unit as a “4-touch” fan speed unit.
Ɣ When the indoor unit with the automatic louver swing and the indoor unit without the automatic louver
swing are mixed in same remote control group, register the indoor unit with the auto-louver as the
main unit. If the indoor unit without auto-louver is registered as the main unit, the auto-louver setting
cannot be applied for this group.
Ɣ If the group with the communication cable connected to the wired controller is not used, the indoor unit
without the wired controller is not registered as the main unit.
CCM01
Group Group Group Group Group Group
Block
Without
Communication
Cable
Block
Outdoor Unit
Indoor Unit
Wired Controller
One Wired Controller
equals one group. One unit is also
handled as one group.
One Wired Controller
equals one group.