Hitachi YUTAKI S Series Technical Catalogue page 137

10 Optional functions
Indoor unit
Input functions (To be configured from the unit controller)
Function # Input
0 Disabled
1
Demand ON/OFF
Smart Act./SG Ready
2
Input 1
3
Swimming pool
4 Solar
5 Operation mode
6 DHW boost
7
Power meter 1
8 Demand ON/OFF C1
9 Demand ON/OFF C2
10
Forced heating
11 Forced cooling
12 Power meter 2
13 ECO mode C1 & C2
14
ECO mode C1
15 ECO mode C2
16 Force OFF
17 SG Ready Input 2
129 TCGB0123 rev.2 - 10/2019
-
Send Demand ON or OFF Operation to Circuit 1 and Circuit 2
This function must be used to block or limit the heat pump when restricted by Electric
company. It allows an external Smart switch device to switch off or reduce consumption of the
heat pump during time of peak electricity demand.
In case of use of Smart Grid Ready application, this input is used as a digital input 2 and
allows four different operating modes
When YUTAKI M is used to warm th swimming pool water, this input is used as a feedback for
swimming pool water pump.
In case of combine YUTAKI with solar panels, this input is used as a feedback for solar station
ready operation.
Cool/Heat must be changed by an input of an external contact signal. Contact signal is edge
detection; Cool/Heat changeover by unit controller is also available
With this function enabled, it is possible to request a heating up of the DHW when user
requires an instantaneous delivery of DHW.
Input used as kW/h pulse count for Energy data recording
Send Demand ON or OFF Operation only to Circuit 1
Send Demand ON or OFF Operation only to Circuit 2
Forced Heating Demand by input of contact signal from outside
Forced Cooling Demand by input of contact signal from outside
Input used as kW/h pulse count for Energy data recording
Water temperature setting for Circuit 1 and Circuit 2 it is reduced by ECO operation mode
(Default 3ºC) by input of contact signal from outside
Water temperature setting for Circuit 1 it is reduced by ECO operation mode (Default 3ºC) by
input of contact signal from outside
Water temperature setting for Circuit 2 it is reduced by ECO operation mode (Default 3ºC) by
input of contact signal from outside
Force OFF operation for unit. RCS will continue as normally set but will show indication that
operation is forbidden
In case of want to use Smart Grid Ready application, this input is used as a digital input 2 and
allow four different operating modes
Description
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