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6 Preparation
Installer reference guide
27
EWAQ+005BAVP
Packaged air-cooled water chillers and packaged air to water heat
pumps
4P492900-1 – 2017.06
M
1
2
12
5
15
13
17
22
14
11
10
9 7 8
3
4
23
25
24
21
20
19
18
6
b
c
a
d
16
a
Backup heater kit
b
Outdoor unit
c
Control box
d
Option box
Outdoor unit
Item
Description
Wires
Maximum
running
current
Power supply
1
Power supply for
outdoor unit
2+GND
(a)
2
Normal kWh rate power
supply
2
6.3 A
User interface
3
User interface
2
(b)
Optional equipment
4
Remote outdoor sensor 2
(c)
Field-supplied components
5
Space heating/cooling
operation control (or
shut‑off valve)
2
(c)
(a)
Refer to name plate on outdoor unit.
(b)
Cable section 0.75 mm² till 1.25 mm²; maximum length:
500 m. Applicable for both single user interface and dual
user interface connection.
(c)
Minimum cable section 0.75 mm².
Control box
Item
Description
Wires
Maximum
running
current
Power supply
6
Power supply for
control box
2+GND
(a)
Interconnection cable
7
Interconnection cable
between outdoor unit
and control box
2
(b)
8
Interconnection cable
for the user interface
(between outdoor unit
and control box)
2
(c)
9
Interconnection cable
for the space heating/
cooling operation
control (or shut‑off
valve) (between
outdoor unit and control
box)
2
(h)
Item
Description
Wires
Maximum
running
current
10
Interconnection cable
for valve kit
EKMBHBP1 (between
outdoor unit and control
box)
3 (of which 2 are
shared with those
of item 10)
(f)
User interface
11
User interface
2
(c)
Optional equipment
12
Preferential kWh rate
power supply (voltage-
free contact)
2
(d)
13
Space heating/cooling
operation control (or
shut‑off valve)
2
(i)
14
Room thermostat
3 or 4
100 mA
(e)
15
Valve kit EKMBHBP1
3
(g)
(a)
Cable section 2.5 mm².
(b)
Cable section 0.75 mm² till 1.25 mm²; maximum length:
20 m.
(c)
Cable section 0.75 mm² till 1.25 mm²; maximum length:
500 m. Applicable for both single user interface and dual
user interface connection.
(d)
Cable section 0.75 mm² till 1.25 mm²; maximum length:
50 m. Voltage-free contact shall ensure the minimum
applicable load of 15 V DC, 10 mA.
(e)
If valve kit EKMBHBP1 is part of the system, then the
required cable section is 0.75 mm². If valve kit EKMBHBP1
is NOT part of the system, then the minimum required
cable section is 0.75 mm², and the maximum cable length
is 10 m.
(f)
Cable section 0.75 mm².
(g)
The valve and connection wire (12 m) are delivered with
the valve kit.
(h)
If valve kit EKMBHBP1 is part of the system, then the
required cable section is 0.75 mm². If valve kit EKMBHBP1
is NOT part of the system, then the required cable section
is 1.5 mm².
(i)
If valve kit EKMBHBP1 is part of the system, then the
required cable section is 0.75 mm². If valve kit EKMBHBP1
is NOT part of the system, then the minimum required
cable section is 0.75 mm².
Backup heater kit
Item
Description
Wires
Maximum
running
current
Power supply
16
Backup heater power
supply
See table below. —
Interconnection cable
17
Interconnection cable
between backup heater
kit and control box
6 (3V3)
7 (6V3, 6W1,
9W1)
(a)
(a)
Minimum cable section 0.75 mm²; maximum length: 10 m.
Backup heater
Power supply
Required number of
conductors
EKMBUHCA3V3 1× 230 V
2+GND
EKMBUHCA9W1 1× 230 V
2+GND+2 bridges
3× 400 V
4+GND
Option box
Item
Description
Wires
Maximum
running
current
Power supply