EN - 30
Release screw
3.2.6 Adjusting the accelerator pump
- On units of all sizes, the accelerator pump is equipped with a release screw. It may be
necessary to use it when starting the system or when powering it off for extended periods of time.
The accelerator pumps are EC type. The speed is controlled according to the various scenarios
encountered by the control. The variable speed control is PWM type. On the indoor accelerator
pump, speed variation usually takes place during unit start-up. On the outdoor accelerator pump,
speed variation takes place according to the sensor's return temperature. There are 2 control
parameters accessible from the level which are used to decrease or increase the default level of
the speed thresholds (P122 to P125). This scenario may be applicable if there are loud noises in
the pipes.
3.3 Air bleed sequence
To keep your system running smoothly and, more specifically, if your GeoCIAT
TM
Modular is installed at
a high point, you must bleed the air contained inside it at the time of commissioning. The machine is not
equipped as standard with an automatic air bleed valve. However, it is strongly recommended to install one
on the circuit's high point.
A new function has been integrated on this machine: preparation for system start-up.
The GeoCIAT
TM
Modular is equipped with an automatic function which, when the heat pump is not paired, starts the air circuit
bleed sequence by electrically connecting the heat pump to the electrical network.
If the heat pump has been paired and there is still air in the circuit, a manual bleed may be requested using the procedure below:
Select the Air bleed sequence in the System start-up sub-menu of the Unit
configuration menu, then select the value YES in the setting field.
The function is activated if the unit is off.
Remember to take the cap off the automatic bleed valve.
The function can be stopped at any time by selecting the value NO in the setting field.
At the end of the air bleed sequence, the message END OF SEQUENCE appears on the
home screen. Always place the cap back on the automatic bleed valve when finished.
TUESDAY 19 JANUARY
14:58
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