9 | Electrical installation
Installer reference guide
79
EWAA011~016DA + EWYA009~016DA
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P620242-1 – 2020.06
Item Description
Room thermostat (wired or
wireless)
In case of wireless room thermostat, see:
▪ Installation manual of the wireless room
thermostat
▪ Addendum book for optional equipment
In case of wired room thermostat, see:
▪ Installation manual of the wired room
thermostat
▪ Addendum book for optional equipment
Wires: 0.75mm²
Maximum running current: 100mA
For the main zone:
▪ [2.9] Control
▪ [2.A] Thermostat type
For the additional zone:
▪ [3.A] Thermostat type
▪ [3.9] (read-only) Control
Remote outdoor sensor See:
▪ Installation manual of the remote outdoor
sensor
▪ Addendum book for optional equipment
Wires: 2×0.75mm²
[9.B.1]=1 (External sensor = Outdoor)
[9.B.2] Ext. amb. sensor offset
[9.B.3] Averaging time
Remote indoor sensor See:
▪ Installation manual of the remote indoor
sensor
▪ Addendum book for optional equipment
Wires: 2×0.75mm²
[9.B.1]=2 (External sensor = Room)
[1.7] Room sensor offset
Human Comfort Interface See:
▪ Installation and operation manual of the
Human Comfort Interface
▪ Addendum book for optional equipment
Wires: 2×(0.75~1.25mm²)
Maximum length: 500m
[2.9] Control
[1.6] Room sensor offset