Hitachi YUTAKI RWM-2R1E Installation & Operation Manual page 128

ELECTRICAL AND CONTROL SETTINGS
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ECO (Default for input 2)
When enabled at Unit controller, both for circuit 1 and circuit 2, also for heating and cooling, this input switches the indoor unit into
an ECO mode by adjusting its settings only when input is closed.
The input can come from a push button, a thermostat or any other external device with that purpose.
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Swimming pool (Default for input 3)
When it is necessary to control the temperature of the swimming pool water, a connection between the heat pump and the
corresponding sensor must be done on terminals 16 and 17 at the Terminal board (input 4).
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Solar (Default for input 4)
This input comes from a solar panel sensor. The solar combination by input demand allows HSW to be heated by solar system when
there is enough solar energy available. The connection of this input signal has to be done between terminals 16 and 18 at TB2.
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Smart tariff (Default for input 5)
This function can be used to block or limit the heat pump. It allows an external Smart switch device to switch off or limit the heat
pump during a period of peak electricity demand. Terminals 16 and 19 of the TB2.
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DHW boost (Default for input 6)
This function allows a request for a one-time heating up of the domestic hot water temperature. The input can be sent by a push
button, a NC contact and a NO contact. This input is switched on terminals 16 and 20 of the TB2.
114 PMML0575 rev.2 - 03/2022
13
Common
Line
16
Common
Line
16
Common
Line
16
Common
Line
16
Common
Line
15
ECO
Input 2
17
SWP
IN
Input 3
18
Solar
IN
Input 4
19
T
T
Smart F.
Input 5
20
DHW Boost
input 6