Hitachi RCUE40AG2 Service Manual page 61

Control system
1. Air-conditioning operation 1 (capacity control) + Air-conditioning operation 2 (capacity control)
The below example: chilled water outlet temperature 7°C and chilled water outlet temperature 10°C in
cooling.
Running operation:

Run/Stop signal is received from local or remote.
−
a) Dip Switch Setting
It is not necessary. Set it as factory default.
b) Setting of air-conditioning temperature 1
Set chilled water outlet temperature as 7°C.
c) Setting of air-conditioning temperature 2
Set chilled water outlet temperature as 10°C using "▲or▼" switch on indication PCB. (see item
(4) for the setting method)
d) Wiring for switch
Wire as the below fi gure. Terminal No.23-24 wiring makes 2
2. Air-conditioning operation (capacity control) + heat storage operation (100-0%)
The below example: chilled water outlet temperature 7°C (capacity control) in cooling and chilled water outlet
temperature 10°C in heat storage.
Running operation:

Run/Stop signal: Local or remote (cooling), external Thermo (heat storage)
−
Water temperature is set by air-conditioning / heat storage switch. Air-conditioning / heat storage = Air-
−
conditioning setting water temperature / heat storage setting water temperature.
pag. 59
SMGB0003 rev.0-01/2007
Set chilled water outlet temperature as 7ºC
Switch for
setting temp.
setting temperature valid.
nd
220-240V
4 4