6 Electrical installation
Installation manual
19
EWAA004~008D2 + EWYA004~008D2
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P688014-1A – 2022.05
A
a
b
c
d
B
X1B
B
A
a
Top side
b
Left side
c
Bottom side
d
Right side
3
Mount the front plate.
▪ Align the positioning pins and push the front plate onto the
rear plate until it moves into place with a click.
▪ The connector pins are automatically inserted correctly.
a
b
a
a
Positioning pins
b
Connector pins
Opening the user interface after it is installed
If you need to open the user interface after it is installed, proceed as
follows:
1
Remove the WLAN cartridge and USB memory stick (if any).
2
Push the rear plate on each of the 4 spots where the snap-fits
are located.
6.3.4
To connect the shut-off valve
INFORMATION
Shut-off valve usage example.
In case of one LWT zone,
and a combination of underfloor heating and fan coil units,
install a shut-off valve before the underfloor heating to
prevent condensation on the floor during cooling operation.
Wires: 2×0.75 mm²
Maximum running current: 100 mA
230 V AC supplied by PCB
—
1
Open the service cover. See
2
Connect the valve control cable to the appropriate terminals as
shown in the illustration below.
NOTICE
Only connect NO (normally open) valves.
X2M.4
X2M.3
M2S
(NO)
180°
4
3
X2M
3
Fix the cable with cable ties to the cable tie mountings.
