Alpha InTec 50CS, Инструкции по установке, использованию и обслуживанию

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13 Alpha Intec 50CS
1.14 CIRCULATION PUMP (FIG. 1-18).
The Alpha Intec boilers are supplied with 2 types
of pump, both with variable speed adjuster.
These settings are suitable for most systems.
• Boiler pump. The motor has a 3- speed control.
The boiler does not operate correctly with the
control set at the slowest speed. For optimal
functionality, use the pump at maximum speed
(max. head).
Pump release. If the pump becomes stuck after
a long period of inactivity, it must be released.
Loosen the front cap, making sure that the
water that escapes cannot cause injury/damage
to persons/objects and turn the motor shaft
very carefully using a screwdriver so as not
to damage the shaft. Once the pump has been
released, close the vent cap.
• Zone 1 pump. The pump is ideal for the
requirements of each heating system in a
domestic and residential environment. In fact,
the pump is equipped with electronic control
that allows the advanced functions to be set.
Programme P (ΔP-V) - Proportional curve
(Green LEd).
This allows the head to be
proportionally reduced as the system heat
demand decreases (flow rate reduction). Due
to this function, the electrical consumption
of the pump will be reduced: the power used
by the pump decreases together with the
pressure level and flow rate. With this setting,
the pump guarantees optimal performance
in most heating systems, thereby being
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.
Programmes C3 and C4 (ΔP-C) - Constant
curve (White or Orange LEd).
The pump
maintains a constant head as the system heat
demand decreases (flow rate reduction). With
these settings, the pump is suitable for all floor
systems where all the circuits must be balanced
for the same drop in head.
MIN-MAX Program (Blue LEd).
The pump
is distinguished by adjustable operating curves
by positioning the selector in any point between
the Min and Max positions, thereby satisfying
any installation requirement (from a simple
single-pipe to more modern and sophisticated
systems) and always guarantee optimum
performance. The precise working point can be
selected in the entire field of use by gradually
adjusting the speed.
Adjustments. Turn the selector and set it on
the desired curve to adjust the pump.
diagnostics in real time: a bright LED
(in various colours) provides information
regarding the pump operating status.
Programme LEd colour
P (ΔP-V) green
C3 (ΔP-C) - H=3 m white
C4 (ΔP-C) - H=4 m orange
Min - Max blue
ATTENTION! The pump is
blocked but still live.
red
Possible pump release. A stuck pump is
indicated by a fixed red LED. Turn the selector
up to the MAX position, disconnect and
reconnect the power to restart the automatic
release process. The pump will then activate
the procedure that will last a maximum of
15 minutes and the LED will flash upon each
restart. It then turns blue for a few seconds
and goes back to red if the attempt to restart is
not successful. Once the process is complete,
set the selector back to the desired curve and
if the problem has not been resolved, perform
the manual release procedure as follows.
- Disconnect the power to the boiler (the LED
goes off).
- Close the system flow and return and let the
pump cool down.
- Empty the system circuit via the relative valve.
- Remove the motor and clean the impeller.
- Once the release is complete, remount the
motor.
- Fill the primary circuit; restore the power of
the boiler and set the desired curve.
Important:
Take care if the system has been in
operation as the water may be HOT .