4 Installation
Installation manual
6
EWAQ+008BAVP
Packaged air-cooled water chillers and packaged air to water heat
pumps
4P478610-1 – 2017.02
NOTICE
When circulation in each space heating/cooling loop is
controlled by remotely controlled valves, it is important that
the minimum water volume is guaranteed, even if all of the
valves are closed.
Minimum flow rate
Check that the minimum flow rate (required during defrost/backup
heater operation) in the installation is guaranteed in all conditions.
NOTICE
If glycol was added to the water circuit, and the
temperature of the water circuit is low, the flow rate will
NOT be displayed on the user interface. In this case, the
minimum flow rate can be checked by way of the pump
test (check that the user interface does NOT display error
7H).
NOTICE
When circulation in each or certain space heating loops is
controlled by remotely controlled valves, it is important that
the minimum flow rate is guaranteed, even if all valves are
closed. In case the minimum flow rate cannot be reached,
a flow error 7H will be generated (no heating/operation).
See the installer reference guide for more information.
Minimum required flow rate
006+008 models
19 l/min
See the recommended procedure as described in
"6.2 Checklist
during commissioning" on page 17
.
3.3
Preparing electrical wiring
3.3.1
Overview of electrical connections for
external and internal actuators
Item
Description
Wires
Maximum
running
current
Outdoor unit 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
(e)
Interconnection cable
6
Interconnection cable
between outdoor unit
and control box
2
(d)
(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.
(d)
Cable section 0.75 mm² till 1.25 mm²; maximum length:
20 m.
(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.
NOTICE
More technical specifications of the different connections
are indicated on the inside of the outdoor unit.
INFORMATION
From the control box installation manual (same chapter),
disregard the following items:
▪
9
– 3‑way valve
▪
10
– Power supply for booster heater and thermal
protection (from control box)
▪
11
– Power supply for booster heater (to control box)
▪
12
– Domestic hot water tank thermistor
▪
13
– Heat pump convector
4
Installation
4.1
Opening the units
4.1.1
To open the outdoor unit
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING
1×
2×
2×
1
5
6
3
4
8
9
2
7
4.1.2
To open the switch box cover of the
outdoor unit
