Control Valve Status Indicators; Setting The Heating Pump - Worcester Greenstar HIU Installation And Maintenance Instructions Manual

7.3

Control valve status indicators

To be able to see the On/Off indicators of the control valves:
▶ Remove the enclosure, insulation and control unit.
LED power-saving mode: if the position of the valves does not change for
15 seconds, the LED displays are not visible.
Indicators Description
Orange, blue, green Valve in start up mode. Calibration in progress.
Green Valve is completely open.
Green and blue Valve is open between 60 and 99,9 %.
Blue Valve is open between 40 and 60 %.
Blue and orange Valve is open between 0.1 and 40 %.
Orange Valve is completely closed.
Table 14 Control valve status indicators
Fig. 31 Circle = green, square = blue, triangle = orange
7.4

Setting the heating pump

The heating circulation pump has five LED indicators.
Fig. 32 Status displays of the integrated heating circulation pump
[1] Yellow LED
[2] Green LED
[3] Selection button
Available hydraulic pressure
Default pump curve setting: PP3 (highest proportional pressure curve).
Greenstar – 6721852556 (2022/11)
p
[mbar]
400
350
300
250
200
150
100
50
0
Fig. 33 Available hydraulic pressure
[1] PP1: lowest proportional pressure curve
[2] PP2: intermediate proportional pressure curve
[3] PP3: highest proportional pressure curve
The head (pressure) falls as the heating load reduces and rises as the
heating load increases.
Settings
Momentary presses of the selection button will cycle through the
available pump curves. After 10 seconds of inactivity the selected
setting will be activated.
▶ To change the setting press and hold the selection button for 2
seconds to enter setting mode.
1 2 3 4 5 6 7 8 9 10 11
0010017858-01 0010017858-01
Fig. 34 Pump curve adjustment
[1] Proportional pressure curve auto adapt
[2] Constant pressure auto
[3] Proportional pressure curve PP1
[4] Proportional pressure curve PP2
[5] Proportional pressure curve PP3 max
[6] Constant pressure curve PP1
[7] Constant pressure curve PP2
[8] Constant pressure curve PP3 max
[9] Constant curve CC1
[10] Constant curve CC2
[11] Constant curve CC3 max
2
1
V
[l/h]
Commissioning
3
6720808926-55.1Wo
15