KStar FocusAir ESM022, Руководство пользователя

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Chapter 3 Electrical Installation 35
Foc u sA ir I n - ro w Ai r Con d iti on e r U s er ´s M an u a l
(3) Group control communication wiring
The group control function can realize networking management of up to 32 units (address 00~31). The
communication interfaces are a set of CAN interfaces. When the group control function is needed, the middle
jumper cap R36 on the main control board must be unplugged first. If there are no more than 2 units, there is no
need to unplug the jumper cap; when there are more than 2 units, unplug the jumper cap of the middle unit
according to the connection sequence; do not unplug the caps of the first and the last jumper. The field wiring and
parameter settings are carried out as follows:
1) Connect the group control communication lines from the group control (H) and group control (L) ports of the
previous unit terminal block to the group control (H) and group control (L) ports of the next unit terminal block in
sequence until the last unit.
2) Parameter settings must be performed for each unit. On the display screen, enter the “Installation parameters” →
“Function settings” menu, set the “Group mode” parameter to “Group control”, and then set it as appropriate.
3) When a non-host online unit is powered off, offline, shuts down due to fault, fan shuts down due to fault, shuts
down by local button or shuts down remotely (dry contact/communication), the unit exits the rotation queue and
automatically activates one standby unit; every time the above situation occurs, one standby unit will be
automatically added until all the standby units are put into operation. When the host is powered off or offline, all
the standby units will activate and work independently; the
units
will restore previous state after the fault is restored.
4) Remote shutdown
The remote shutdown switch can be enabled in “Function settings” of the installation parameters.
5) Common alarm terminal
External common alarm terminal can be connected. It is controlled by the circuit board common alarm relay and its
output is used to connect to external alarm devices, such as smoke alarms. When a serious alarm occurs, the contact
is closed. This can be used to issue remote alarms, give signals to building management systems or dial paging
systems automatically. The user needs to provide the loop power supply for the common alarm system.
See the circuit diagram and labels for other terminal definitions.
3.3
Outdoor Unit Wiring
3.3.1 Location of electrical interfaces of outdoor unit
The power supply of the outdoor unit can be obtained from the indoor unit electric control box or from the on-site
power distribution cabinet. It is recommended to connect from the indoor unit electric control box. The air-break
switch QF1 of outdoor unit power interface is shown in Fig. 3-3-1 (the picture is for reference only). If the outdoor
unit is powered by the on-site power distribution cabinet, please refer to the local power distribution standard and
the manual of the power distribution cabinet, and refer to Table 3-3-1 to select the unit air-break switch. No matter