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EKCBX/H008BBV3
Unit for air to water heat pump system
4PW66983-1C – 08.2011
Installation manual
23
12.6. Pre-operation checks
Checks before initial start-up
After the installation of the unit, check the following before switching
on the circuit breaker:
1
Field wiring
Make sure that the field wiring between local supply panel and
indoor unit, outdoor unit and indoor unit, indoor unit and backup
heater kit, indoor unit and valves (when applicable), indoor unit
and room thermostat (when applicable), and indoor unit and
domestic hot water tank has been carried out according to the
instructions described in the chapter
, according to the wiring diagrams and according to
European and the applicable legislation.
2
Fuses or protection devices
Check that the fuses or the locally installed protection devices
are of the size and type specified in the chapter
. Make sure that neither a fuse nor a
protection device has been bypassed.
3
Backup heater circuit breaker F1B/F3B (if applicable)
Do not forget to turn on the backup heater circuit breaker F2B in
the switch box (F1B/F3B depends on the backup heater type) of
EKMBUH. Refer to the wiring diagram.
4
Booster heater circuit breaker F2B
Do not forget to turn on the booster heater circuit breaker F2B in
the control box (applies only to units with optional domestic hot
water tank installed).
5
Earth wiring
Make sure that the earth wires have been connected properly
and that the earth terminals are tightened.
6
Internal wiring
Visually check the switch box on loose connections or damaged
electrical components.
7
Fixation
Check that the unit is properly fixed, to avoid abnormal noises
and vibrations when starting up the unit.
8
Damaged equipment
Check the inside of the unit on damaged components or
squeezed pipes.
9
Refrigerant leak
Check the inside of the unit on refrigerant leakage. If there is a
refrigerant leak, call your local dealer.
10
Power supply voltage
Check the power supply voltage on the local supply panel. The
voltage must correspond to the voltage on the identification label
of the unit.
11
Air purge valve
Make sure the air purge valve is open (at least 2 turns).
12
Pressure relief valve
Check if the backup heater is completely filled with water by
operating the pressure relief valve. It should purge water instead
of air.
13
Shut-off valves
Make sure that the shut-off valves are correctly installed and
fully open.
12.7. Powering up the indoor unit
When power supply to the outdoor unit is turned on (provided power
supply via the outdoor unit) , "
88
" is displayed on the user interface
during its initialisation, which might take up to 30 seconds. During
this process the user interface cannot be operated.
12.8. Setting the pump speed
The pump speed can be selected on the pump (see the chapter
"Main components of the outdoor unit" in the EBHQ outdoor unit
installation manual
).
The default setting is high speed (
III
). If the water flow in the system
is too high (e.g., noise of running water in the installation) the speed
can be set to medium speed (
II
) or low speed (
I
).
The available external static pressure (ESP, expressed in kPa) in
function of the water flow (l/min) is shown in the graph below.
DANGER
Switch off all relevant power supply before making any
connections.
NOTICE
Operating the system with the backup heater not
completely filled with water will damage the backup heater!
NOTICE
Operating the system with closed valves will damage the
pump!
0
10
20
30
40
50
60
70
I
III
II
12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42
ESP
[ kP
a
]
[l/min]
