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CIRCULATION PUMP SYSTEM CIRCUIT COOLING
AND HEATING (ADJUSTMENT WITH KNOB SELECTOR
SWITCH).
The circulators are equipped with electronic control that allows to
set advanced functions.. For proper operation one must select the
most suitable type of operation for the system and select a speed
in the available range.
The heating / cooling system circulators (Fig. 4) control the room
heating or cooling requests downstream of the hydraulic manifold.
Constant head (ΔP C) (Ref. 4 Fig. 4). The circulator pump
-
maintains the pressure level (head) constant as the system heat
demand decreases (flow rate reduction). With these settings,
the circulator pump is suitable for all floor systems where all the
circuits must be balanced for the same drop in head. One can
select the power level from a minimum one to a maximum one by
Key:
1 - Automatic vent mode operation
2 - Light ring to indicate the operating status
3 - Proportional head operation
4 - Constant head operation
5 - Operating mode selector switch
Led
Green (on)
Normal functioning
Green
Automatic vent in ope-
(fast flashing)
ration
Abnormal situation
Red (on)
Circulator pump working
Green (flashing)
but stationary
Red (flashing)
Circulator pump blocked
circulator pump not wor-
Led (off)
king
Description
Diagnostics
The circulator pump vents
for 10 minutes
The circulator pump re-
starts once the abnormal
situation has been solved
the circulator pump cannot
restart automatically due to
an anomaly
electronics not powered
turning the selector switch clockwise in the relative power scale.
- Proportional head (ΔP V) (Ref. 3 Fig. 4).This allows the pres-
sure level (head) to be proportionally reduced as the system heat
demand decreases (flow rate reduction). Thanks to this function,
the electric power consumption of the circulator pump is redu-
ced further: the energy (power) used by the pump decreases
according to the pressure level and flow rate. With this setting,
the pump guarantees optimal performance in most heating sy-
stems, proving particularly suitable in single-pipe and two-pipe
installations. Any noise of the water flow in the pipes, valves and
radiators is eliminated by reducing the head. Optimal conditions
for thermal comfort and acoustic well-being. One can select the
power level from a minimum one to a maximum one by turning
the selector switch counterclockwise on the relative power scale.
Adjustments. Turn the selector and set it on the desired curve
to adjust the circulator pump.
Automatic vent function (Ref. 1 Fig. 4). The circulator pump is
equipped with a function that activates its operation for 10 mi-
nutes, alternating the speed between minimum and maximum,
so that the air contained in the circulator pump is expelled by
the air vent valve.
Diagnostics in real time: a light ring (Ref. 2 Fig. 4) supplies, with
different colours, information relating to the circulator pump
operating status, see table below (Fig. 5).
4
Cause
Air in circulator pump
a) voltage out of range (160
÷ 253V)
b) circulator pump tempe-
rature high
check the circulator pump
a) circulator pump not
connected
b) LED damaged
c) electronics damaged
11
Remedy
If the circulator pump requires the
automatic vent function often, one
must adjust the operating mode
properly.
a) check power supply
b) check temperature of room and
of the water contained in the
system
if the problem persists replace the
circulator pump
a) check the electrical connections
b) check that the circulator pump is
working
c) replace the circulator pump
5
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