Test Run And Setting Of Minimum Flow - Rotex HPSU compact 308 Installation Instructions Manual

3 x Start-up
DIP switch
Tab. 3-1

3.1.3 Test run and setting of minimum flow

• Start the system by pressing the
• Wait for the start phase.
1
2
3
4
Fig. 3-2
• Ventilate circulation pump as follows:
– Open ventilation screw on circulation pump.
– Allow pump wheel to run until water emerges from the ventilation screw without bubbles.
– Close ventilation screw on the circulation pump again.
• Ventilate heating system.
• Check minimum flow when heating circuit closed and bypass valve configured:
– Minimum flow 6-8 kW HPSU compact:>12 l/min
28
No.
1
2
SS2
3
4
DIP Switch Settings (* = factory setting)
The number "88" is displayed for approx. 30 s during the start phase on the display of the main control unit (HPR1).
The system starts an automatic test run that lasts approx. 30 min.
During this test run, nothing particular is shown on the Display.
After a successful automatic test run, the system starts normal operation.
It is important that the water temperature does not fall below 10 °C during the test run. Otherwise the frost
protection switch could be activated and the test run would not be completed.
Only when backup-heater (BUH) is installed:
If the water temperature falls below 10 °C, the
displayed. This switches on the backup-heater (BUH) during the automatic test run and the water temperatures
is kept above 10 °C.
If the installation has already been put into operation, the test run can also be started manually.
• Start the system by pressing the
• Press the key 4x in succession (also refer to the instruction manual).
Main control (HPR1)
Key "ON / OFF"
Operating Display LED
Additional Control Unit (HPRA1)
Main display and operating elements
Designation
Do not change.
Domestic hot water generation
Room thermostat/pump in continuous operation
Do not change.
key on the main control unit (HPR1).
key on the main control unit (HPR1).
5 Key +
6 Key -
7 Key OK
8 Pressure gauge (system pressure, heating circuit)
–
ON*
ON
–
key must be repeatedly pressed until the symbol
FA ROTEX HPSU compact 308 - 02/2012
Setting
–*
OFF
OFF*
–*
is