Wilo Stratos-D Series User Manual

Installation and operating instructions Wilo-Stratos/-D/-Z/-ZD 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.
p-c, p-v and p-T control modes:
p-c (Fig. 9) p-v (Fig. 8) 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 cus-
tomer service taking
the plant conditions
into account, via the
serial digital inter-
face or using an IR
operating and serv-
ice unit (accessory).
Duty point within
the control range
Draw from duty point
towards the left. Read
off setpoint 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
T = T
max
-T
min

10 °C
Gradient:
Hs/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

Wilo Stratos-D Series Specifications

General

Application	Heating
Connection Type	Flange connection
Fluid Temperature Range	-10 °C to +120 °C
EEI	≤ 0.20
Display	LCD
Power Consumption	Varies depending on model
Housing Material	Cast iron
Motor Type	EC motor
Energy Efficiency Class	A