7 Installation
Installer reference guide
38
EWAQ+0 EK(2)CB
EKMB9W1
Packaged air-cooled water chillers and packaged air to water heat
pumps
4P492901-1 – 2017.06
a
c
b
a
Low voltage wiring
b
High voltage wiring
c
Power supply cable
5
Make sure that the cable does NOT come in contact with sharp
edges.
6
Install the switch box cover.
INFORMATION
When installing field supply or option cables, foresee
sufficient cable length. This will make it possible to remove/
reposition the switch box and gain access to other
components during service.
CAUTION
Do NOT push or place redundant cable length in the unit.
7.8.5
To connect the main power supply
1
Connect the main power supply as follows:
X1M
1 2 3 L N
b
c
a
a
Cable tie
b
Interconnection cable to switch box
c
Power supply cable (including earth)
2
Open the switch box and route the wiring as follows.
In case of normal kWh rate power supply
X5M
A2P
X6Y
X1A
X3M
X6YA
X19A
In case of preferential kWh rate power supply
1 2
9
10
X5M
A2P
X6Y
X1A
X6YB
X3M
5
6
X6YA
X19A
X2M
X8M
S1S
a
b
1
L
2
N
a
Normal kWh rate power supply
b
Preferential power supply contact (on the control box)
3
Install the switch box cover.
INFORMATION
For the exact position of connectors X6Y, X6YA, and X6YB
in the switch box, see the service manual.
INFORMATION
In case of preferential kWh rate power supply, the
necessity of a separate normal kWh rate power supply to
the hydro part of the outdoor unit X3M/5+6 depends on the
type of preferential kWh rate power supply.
A separate connection to the hydro part of the outdoor unit
is required:
▪ if preferential kWh rate power supply is interrupted
when active, OR
▪ if no power consumption by the hydro part of the
outdoor unit is allowed at the preferential kWh rate
power supply when active.
7.8.6
To connect the user interface
Connection to outdoor unit
INFORMATION
▪ If control box EKCB07CAV3 is NOT part of the system,
connect the user interface directly to the outdoor unit
according to the instructions below.
▪ If control box EKCB07CAV3 is part of the system,
connect the user interface to the control box. For
instructions, see "Connection to control box" below.
Содержание EWAQ006BAVP
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