Operation Manual

Menu: Heating circuits
Variable speed pump
The pump in the THISION S for heating
circuit 1 is speed controlled according
to the hydraulic standard.
Speed design point
Sets the speed level (1-24) of the pump
at the design point for achieving the
nominal flow rate. If necessary, the fan
speed can be reduced (hydraulic
adjustment).
This corresponds to the analogue
speed selector switch on the pump.
NB: When changing the setting, the
minimum speed (operating line 885)
must always be adjusted
simultaneously.
Pump PWM min
Minimum PWM pump percent speed in
heating mode, which must be
maintained, so that no supply shortage
occurs in the rooms.
This value can be adjusted only by
changing the speed design point
parameter (param. 884) in accordance
with the adjacent table.
The "variable speed pump" function is
active in hydraulic diagram 3 and 60, in
line no. 5701.
The PWM pump control is based on a
weather-compensated supply line
temperature control using the heating
curve.
Line no.
Operating line
Diagram
function
Factory setting
884
Speed design point
NqmodNenn
see table below
Thision S factory setting
9 kW
13 kW
17 kW
25 kW
35 kW
50 kW
Speed in design point (884)
16
16
19
19
24
24
these values must not be
set any higher
not to be
changed
Line no.
Operating line
Diagram
function
Factory setting
885
Pump PWM min
NqmodMin
40 %
THISION S 9-13kW
Speed design
point
Operating line 884
Pump PWM min
Operating line 885
Step 16
40%
Step 15
43%
Step 14
46%
Step 13
49%
Step 12
53%
Step 11
57%
Step 10
63%
Step 9
69%
Step 8
76%
Step 7
85%
Step 6
97%
THISION S 17-25kW
Speed design
point
Operating line 884
Pump PWM min
Operating line 885
Step 19
40%
Step 18
43%
Step 17
45%
Step 16
47%
Step 15
50%
Step 14
53%
Step 13
57%
Step 12
61%
Step 11
67%
Step 10
73%
Step 9
79%
Step 8
88%
Step 7
99%
29
THISION S 17 + 25
Max residual head factory setting
THISION S 9 + 13
Max residual head factory setting
THISION S 17 + 25
Min residual head
factory setting
(line 885 = 40%)
THISION S 9 + 13
Min residual head
factory setting
(line 885 = 40%)
Residual head (mWs)
Speed
(line 884 setting)
Flow rate (m3/h)
Residual pump head