Description And Function - salmson PRIUX home Instalacion Y Puesta En Servicio

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6 Description and function

6.1 The pump
The pump (Fig. 1) consists of a hydraulic system, a glandless pump motor with
a permanent magnet rotor, and an electronic control module with an integrated
frequency converter. The control module has a white operating knob together
with an LED display (Fig. 1) for setting all parameters and for displaying the current
power consumption in W.
6.2 Functions
All functions can be set, activated or deactivated using the white operating knob.
In operating mode, the current power consumption in W is displayed.
Control mode
Variable differential pressure (Δp-v):
The differential-pressure setpoint H is increased linearly over the
permitted volume flow range between ½H and H (Fig. 2a).
The differential pressure generated by the pump is adjusted to the
corresponding differential-pressure setpoint. This control mode is especially
useful in heating systems with radiators, since the flow noises at the thermostatic
valves are reduced.
Constant differential pressure (Δp-c):
The differential-pressure setpoint H is kept constant over the permitted
volume flow range at the set differential-pressure setpoint up to the
maximum pump curve (Fig. 2b).
Salmson recommends this control mode for underfloor-heating circuits or older
heating systems with large-sized pipes as well as for all applications with no
changeable pipe system curve, e.g. boiler charge pumps.
Bleeding function
The bleeding function lasts 10 minutes after activation. After 10 minutes,
the pump stops and goes into a wait mode which is indicated by the
middle bar of the LED display flashing.
After the bleeding process, the desired control mode and the delivery head on the
pump must be selected and set in order to the put the pump into operation.
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When the white knob is turned, the LED display shows the delivery
head in m.
01/2015