Hitachi RAS-3WHVRP Technical Catalogue

10 Optional functions
Additional functions by accessory sensor
TCGB0123 rev.2 - 10/2019
131
10
10.2 Additional functions by accessory sensor
HITACHI offers to its users the option to add more functions to the inputs from signals coming from some specic
sensors. The conguration for this purpose is explained below:
I/O Terminal name
Port for setting
(Connector number)
Factory default setting
Input/Output type
I/O Display Setting contents Function #
Sensor 1 A1 CN26 #2 Disabled 0 NTC
Sensor 2 A2 CN25 #1-2 Disabled 0 NTC
Sensor 3 A3 CN5 #1 Disabled 0 NTC
Function of sensors
Function # Input Description
1 Boiler combination/Two3 This sensor is used in case to combine any YUTAKI M with an external boiler.
2 Swimming pool
When combining YUTAKI with swimming pool, this sensor is used to read the temperature
from the water of the swimming pool.
3 Solar panel sensor
When combining YUTAKI with solar panels, this sensor is used to read the temperature
from the solar panel.
4
Zone 1 & 2 ambient
sensor
If Aux1 and Aux2 sensors are both connected and enabled at the unit controller
conguration, the detection of ambient temperature value is carried out by these sensors.
The ambient temperature setting for each circuit is set from the unit controller or central
platform. The temperature value detected by each sensor is applied to the corresponding
circuit.
5 Zone 1 ambient sensor
If Aux1 and Aux2 sensors are both connected and enabled at the unit controller
conguration, the detection of ambient temperature value is carried out by these sensors.
The ambient temperature setting for each circuit is set from the unit controller or central
platform. The temperature value detected by each sensor is applied to the circuit 1.
6 Zone 2 ambient sensor
If Aux1 and Aux2 sensors are both connected and enabled at the unit controller
conguration, the detection of ambient temperature value is carried out by these sensors.
The ambient temperature setting for each circuit is set from the unit controller or central
platform. The temperature value detected by each sensor is applied to the circuit 2.
7 Second outdoor ambient
An outside temperature sensor can be directly connected to the controller in case the heat
pump is located in a position not suitable for this measurement.

Hitachi RAS-3WHVRP Specifications

General

Brand	Hitachi
Model	RAS-3WHVRP
Category	Heat Pump
Language	English