8.4 Setting the pump performance
During planning, the unit is designed for a specific duty point (hydraulic full-
load point for maximum heating power requirement calculated). During com-
missioning, the pump capacity (delivery head) must be set according to the duty
point of the unit. The factory setting does not comply with the pump capacity
required for the system. It is determined with the help of the pump curve dia-
gram for the selected pump type (from catalogue/data sheet).
See also Fig. 8 to 10.
Δp-c, Δp-v and Δp-T control modes:
Duty point on
maximum curve
Duty point within
the control range
Adjustment range H
Installation and operating instructions Siriux/Siriux-D/Siriux-O
Δp-c (Fig. 9)
Draw from duty point towards the left.
Read off setpoint H
S
this value.
Draw from duty
point towards the
left. Read off set-
point H
and set the
S
pump to this value.
H
see
,
min
max
5.1 Type key
Δp-v (Fig. 8)
and set the pump to
Go along the control
curve up to the max-
imum curve, then
move horizontally to
the left. Read off the
setpoint H
and set
S
the pump to this
value.
Δp-T (Fig. 10)
The settings are to be
made by customer
service taking the plant
conditions into
account, via the serial
digital interface or using
an IR operating and
service unit (accessory).
T
: 20 ... 100 °C
min
T
: 30 ... 110 °C
max
ΔT = T
≥ 10 °C
-T
max
min
Gradient:
ΔHs/ΔT ≤ 1 m/10 °C
H
H
,
min
max
Adjustment in
positive effective
direction:
> H
H
max
min
Adjustment in
negative effective
direction:
> H
H
min
max
English
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