Hitachi YUTAKI S Series Technical Catalogue page 133

10 Optional functions
Indoor unit
Code
DSW5#1:OFF;2#OFF
DSW5#1:OFF;2#ON
DSW5#1:ON;2#OFF
DSW5#1:ON;2#ON
DSW5#4:ON
SSW1
Remote
Local
SSW2
Heat
Cool
125 TCGB0123 rev.2 - 10/2019
Optional function
description
C1 : Average OU Sensor
C2 : Average OU Sensor
C1 : Average OU Sensor
A 2nd outdoor ambient temperature sensor is available as an
C2 : Average Aux Sensor
accessory, in case that the built-in ambient temperature sensor of
the outdoor unit cannot provide a reliable temperature measurement
to the system because of restraints of the installation location. The
preferred sensor for each circuit can be selected by means of DSW
C1 : Average Aux Sensor
setting.
C2 : Average OU Sensor
C1 : Average Aux Sensor
C2 : Average Aux Sensor
Some installations need a big buffer tank in combination with auxiliary
Use max (Two/Two3) for heating (boiler, pellets, solar panels. etc...). The control of the water
water control can be done by external temperature sensor (Two3) to heat this buffer
tank. Refer to
Remote or Local operation
Refer to
(Manual)
Cool and Heat operation in
Refer to
case of Local (Manual)
Explanation
"Manual operation" chapter in Service Manual.
chapter in Service Manual.
"Manual operation"
"Manual operation" chapter in Service Manual.
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