Fujitsu Waterstage Split Comfort 5 Series - Commissioning; PWM Pump Speed; Silent Mode

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 Commissioning
- Close the installation's main circuit breaker.
Upon initial start-up (or in winter), to preheat the
compressor, engage the installation's main circuit
breaker (outdoor unit power supply) several
hours before starting any tests.
- Press the heat pump's ON/OFF Switch.
To ensure that inputs EX1, EX2 and EX3 operate
correctly: Check that the electricity supply's
neutral phase polarity has been respected.
When the power is switched on and every time that the
ON/OFF
Switch is switched off and then switched on
again, the outdoor unit will take approximately 4 minutes
to start up, even if the setting is requesting heating.
The display can show error 370 when the
appliance (re)starts. Do not be concerned,
the communication between the outdoor and
hydraulic unit will re-establish itself in a few
moments.
During the regulator initialisation phase, the display
shows all the symbols and then "Data, update" and then
"State heat pump".
- Make all the specifi c adjustments to the setting.
(Installation confi guration):
- Press
OK
.
- Hold down the key for 3s and select the level of
access used with the aid of the knob. .
- Confi rm with the key
OK
.
- Parameter the heat pump's setting (Consult "List of
function lines", page 49).
On commissioning (or the case of error 10), the electrical
back-up heaters are liable to start up even if the outdoor
temperature at the time is above the heaters’ trigger
temperature.
The regulating system uses an average initial outdoor
temperature of 0°C and requires some time to update
this temperature.
To avoid this situation, the sensor must be connected
correctly. Re-initialise parameter 8703 (commissioning
level, consumer diagnostic menu).
►
PWM pump speed
The speed of the PWM circulator can be adjusted by adjusting
the following parameters from 70 to 100% :
Presets (5700) 1 2 3 4
Parameter Heating speed 2793 2154 2154 2154
Parameter Cooling speed 2779 2127 2127 2127
Presets (parameter 5700) :
Preset 1: 1 heating circuit.
Preset 2: 2 heating circuits.
Preset 3: Boiler backup, 1 heating circuit.
Preset 4: Boiler backup, 2 heating circuits.
►
Silent mode
It's possible to reduce the noise emitted by the outdoor unit by reducing the operating power of the compressor.
Silent mode setting
Adjust parameter 2907 to 50%. The compressor power will be halved from 22:00 to 7:00 (parameters 3026 and 3027
/ default values).
To guarantee the heat pump performance, the function is deactivated if the outdoor temperature is below 7 ° C.
22
20
18
16
14
8070 90 100 % PWM
Débit L/min
Débit en fonction du % PWM
■ Models 5, 6 and 8
Flow according to % PWM
Flow L/min
24
26
22
20
18
16
8070 90 100 % PWM
Débit L/min
Débit en fonction du % PWM
■ Model 10
Flow according to % PWM
Flow L/min
Waterstage Split Comfort DHW Serie / INSTALLATION / 2125 - EN