Installation and operating instructions Siriux/Siriux-D/Siriux-O
83
English
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.
Δ
p-c,
Δ
p-v and
Δ
p-T control modes:
Δ
p-c (Fig. 9)
Δ
p-v (Fig. 8)
Δ
p-T (Fig. 10)
Duty point on
maximum curve
Draw from duty point towards the left.
Read off setpoint H
S
and set the pump to
this value.
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).
Duty point within
the control range
Draw from duty
point towards the
left. Read off set-
point H
S
and set the
pump to this value.
Go along the control
curve up to the max-
imum curve, then
move horizontally to
the left. Read off the
setpoint H
S
and set
the pump to this
value.
Adjustment range H
min
,
H
max
see
5.1 Type key
T
min
: 20 ... 100 °C
T
max
: 30 ... 110 °C
Δ
T = T
max
-T
min
≥
10 °C
Gradient:
Δ
Hs/
Δ
T
≤
1 m/10 °C
H
min
,
H
max
Adjustment in
positive effective
direction:
H
max
>
H
min
Adjustment in
negative effective
direction:
H
min
>
H
max
