181
Aquarea air-to-water heat pumps - Planning and installation manual - 02/2022
Installation
6
6.8.2 Connecting the optional on-site accessories
6.8.2.1 Connecting accessories to the indoor unit
The following method is correspondingly applicable for all indoor units, All in One units and
hydrokits of all generations, but will be explained here on the basis of the example of a hydrokit of
the H Generation (→
Installation example for accessories (Hydrokits), p. 181
Carry out the following steps to connect accessory cables to the external interfaces of the indoor
unit:
1.
Open the indoor unit (→
) and, if applicable, the connection
box.
2. Guide the cable through the cable glands (
6
/
7
,
a
) into the device as shown in the illustrations
below.
3. Fix the cable by using cable clamps/strain reliefs (
3
,
b
) and bundle the accessory cables by
means of cable binders (
4
,
d
).
4. Connect the accessory cables according to the installation example below and the
subsequent brief overview of the external interfaces (→
6.8.2.3 Brief Overview of external
) and take care to leave the earth conductor longer than the other cables
(
c
).
Installation example for accessories: Hydrokit WH-SDC12H6E5
5
6
7
B
2
3 + b
3 + b
1
4 + d
4 + d
4 + d
c
a
A
a Use separate cable glands for power cord and
accessory cables
b Fix accessory cable with cable clamps/strain
reliefs for safety reasons
c Leave earth conductor longer than the other
cables for safety reasons
d Bind all accessory cables together by means of
cable binders
A Connection of the accessory cables
1 Main PCB
2 Optional PCB CZ-NS4P
3 Cable clamps / strain reliefs
4 Cable binder
B Detailed view: Cable glands
5 Cable glands for power and connecting cables
6 Cable gland for 3 way-valve, 2-way valve, room ther-
mostat heating zone 1, electric tank heater, additional
pump, connection bivalent heating source
7 Cable gland for external control signal, tank tempera-
ture sensor, room temperature sensor heating zone 1,
outdoor temperature sensor, overload protection hot
water tank, remote controller
