Commissioning; Pwm Pump Speed; Silent Mode - Fujitsu Waterstage Split Comfort 5 Series Installation Manual

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 is switched off and then switched on
Switch
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.
►

PWM pump speed

The speed of the PWM circulator can be adjusted by adjusting
the following parameters from 70 to 100% :
Presets (5700)
Parameter Heating speed
Parameter Cooling speed
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.
- 46 -
1 2 3
2793 2154 2154 2154
2779 2127 2127 2127
Waterstage Split Comfort DHW Serie / INSTALLATION / 2125 - EN
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):
OK
- Press .
- Hold down the key
access used with the aid of the knob.
- Confi rm with the key
- Parameter the heat pump's setting (Consult
function lines", page
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).
■ Models 5, 6 and 8
Flow L/min
Débit L/min
Flow according to % PWM
Débit en fonction du % PWM
22
4
20
18
16
14
70 80
■ Model 10
Flow L/min
Débit L/min
Flow according to % PWM
Débit en fonction du % PWM
26
24
22
20
18
16
70 80
for 3s and select the level of
.
OK
.
49).
90 100 % PWM
90 100 % PWM
"List of