section 8: operation
Page 38
8.3.5 Unblock pump function
When the heat pump is stopped for more than 48 hours (parameter
4211), the water pump turns ON for 5 seconds (parameter 4212) to
prevent seizing up and increases the life time of the pump.
In the case of the main pump and the additional pump, the down
time after the previous operation stop is counted individually.
Furthermore, the pump operation time can be set individually to
prevent seizing.
8.3.6 Pump output adjustment function
Adjust the main water pump output so that the required flow rate is
produced in the heating system.
Using the DIP SW on the Terminal PCB, three level settings are
possible.
An excessively low flow rate may cause problems including
reduced capacity and poor circulation.
! nOtE !
To select one of the three performance curves, set DIP SW5 and
DIP SW6 as shown in Figure 8-9.
Factory default setting:
DIP SW5 and DIP SW6 set to OFF (level 3)
level
Parameter
function description
Display and input value
remarks
Group
code
Default
Min.
max.
Unit
I
42 11
OFF time for unblock pump function start
48
0
240
1 hr
I
42 12
Time ON main water pump for unblock pump function
5
0
10
1 sec
table 8-8:
Unlock pump function parameters
ON
OFF
DIP SW.
Level 3
(Maximum)
ON
OFF
Level 2
(Medium)
ON
OFF
Level 1
(Minimum)
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
figure 8-9:
Pump output adjustment flow rate - DIP switches
0
2
4
6
8
10
12
14
(m)
0
10
20
30
40
Level3
Level2
Level1
50(L/min)
HPID12
0
2
4
6
8
10
12
14
(m)
0
10
20
30
40
Level3
Level2
Level1
50(L/min)
figure 8-10:
Pump output adjustment flow rate - HPID12R32
Содержание Aerona3 HPID12R32
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