Hitachi Central Station EX Installation Manual page 75

Air conditioner managing system
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■ Mode Shift / Temperature Shift
NOTE:
Mode shift and Temp. shift intends to save energy by control described below.
[Mode shift]: This function switches to [Stop] when the mode is Heat otherwise switches to [FAN].
[Temperature shift]: This function lowers the temperature by X°C in Heat mode and raises temperature
by Y°C in Cool and Dry mode.
* Neither of [Mode shift] or [Temperature shift] intends to guarantee the saving on power consumption.
NOTICE:
Mode shift and Temperature shift cannot simultaneously be set together.
If temp. shift is set on multiple external inputs, AND multiple external signals are to be received, then
the signals are prioritized to change temperature. Upon signal clearance, the temperatures return to
the value before the signal receipt.
Setting sample
External input 3 -- Demand controller priority Signal input [ Low ]
Target unit: All indoor unit
Setting: ±2°C All RC ope. prohibit
External input 2 -- Demand controller priority Signal input [ Med ]
Target unit: All indoor unit
Setting: ±3°C All RC ope. prohibit
External input 1 -- Demand controller priority Signal input [ High ]
Target unit: All indoor unit
Setting: Stop All RC ope. prohibit
Operation sample While in Cool mode
Temperature
29°C
28°C
26°C
The unit does not stop if both [Mode shift] and [Run] are allocated to the same external input while in heat
mode, Run has precedence.
A12124820A
+2°C
External input
External input
number
number
3 Input
2 Input
Stop
+3°C
External input
number
1 Input
External input
number
1, 2, 3 Canceled
73

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