Brochure

Functions
MAGNA3
8
25
In heating systems with a fixed system characteristic, for example domestic hot
water systems, the control of the pump according to a constant return-pipe
temperature may be relevant.
FLOW
LIMIT
can be used with advantage to control the maximum circulation flow.
Constant temperature
Select this control mode if the pump performance is to be controlled according to a
differential temperature in the system where the pump is installed.
This control mode requires two temperature sensors, either the internal temperature
sensor together with an external sensor or two external sensors.
Differential temperature
If an external controller is installed, the pump is able to change from one constant
curve to another, depending on the value of the external signal.
The pump can also be set to operate according to the max. or min. curve, like an
uncontrolled pump:
• The max. curve mode can be used in periods in which a maximum flow is
required. This operating mode is for instance suitable for hot water priority.
• The min. curve mode can be used in periods in which a minimum flow is required.
This operating mode is for instance suitable for manual night setback if Automatic
Night Setback is not desired.
Constant curve
In systems with pumps operating in parallel.
The multi-pump function enables the control of single-head pumps connected in
parallel (two pumps) and twin-head pumps without the use of external controllers.
The pumps in a multi-pump system communicate with each other via the wireless
GENIair connection.
"Assist" menu
Multi-pump setup
System application Select this control mode
H
Q
H
Q
Δt
H
Q