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INSTALLERUSER
MAINTENANCE TECHNICIAN
1.11 CIRCULATION PUMP ONLY FOR
VERSION AUDAX TOP 68 ErP.
e system is supplied with pumps equipped
with speed regulators.
ese settings are suitable for most systems.
Central heating/cooling system pumps 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.
e central heating/cooling system pumps con-
trol the room central heating or cooling requests
downstream of the hydraulic manifold.
- Constant head (P C) (4 g. 1-16) default
setting. e circulator pump maintains the
pressure level (head) constant as the system
heat demand decreases (ow rate reduction).
With these settings, the circulator pump is suit-
able for all oor 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 turning the selector
switch clockwise in the relative power scale.
- Proportional head (P V) (3 Fig. 1-16). is
allows the pressure level (head) to be propor-
tionally reduced as the system heat demand
decreases (ow rate reduction). anks to this
function, the electric power consumption of
the circulator pump is reduced further: the
energy (power) used by the pump decreases
according to the pressure level and ow rate.
With this setting, the pump guarantees optimal
performance in most heating systems, proving
particularly suitable in single-pipe and two-
pipe installations. Any noise of the water ow
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 (1 fig. 1-16). The
circulator pump is equipped with a function that
activates its operation for 10 minutes, 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 (2 g. 1-16)
supplies, with different colours, information
relating to the circulator pump operating status,
see table below.
N.B.:
* e variable pressure (PP) mode is recom-
mended for heating systems with radiators.
* e constant pressure (CP) mode is recom-
mended for oor heating systems.
* All hydronic curves have been defined in
constant pressure mode with minimum, in-
termediate and maximum speed.
LED Description Diagnostics Cause Remedy
Green (on) Normal functioning
Green
(fast ashing)
Automatic vent in operation
e circulator pump vents
for 10 minutes
Air in circulator pump
If the circulator pump requires the au-
tomatic vent function oen, one must
adjust the operating mode properly.
Red (on)
Green (ashing)
Abnormal situation
Circulator pump working
but stationary
e circulator pump restarts
once the abnormal situation
has been solved
a) voltage out of range
(160 ÷ 253V)
b) circulator pump temper-
ature high
a) check power supply
b) check temperature of room and of
the water contained in the system
Red (ashing) Circulator pump blocked
the circulator pump cannot
restart automatically due to
an anomaly
check the circulator pump
if the problem persists replace the
circulator pump
LED (o)
circulator pump not work-
ing
electronics not powered
a) circulator pump not
connected
b) LED damaged
c) electronics damaged
a) check the electrical connections
b) check that the circulator pump is
working
c) replace the circulator pump
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
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