Automatic Detection Of The Presence Of Air - Vent System - Askoll ENERGY SAVING ES2 Installation And Operation Instructions Manual

ENERGY SAVING

9.4 Automatic detection of the presence of air - Vent system.

Fig. 9.2: Filling and venting of heating systems
Fill and bleed the system correctly.
The circulator can be noisy at start due to the presence of air. Such noise should stop after few
minutes of operation. Usually the pump rotor chamber normally bleeds automatically after a short
time in operation.
The circulator is equipped with a special software system that detects the presence of excess of air
within the heating system. The LED shows the presence of air in the hydraulic circuit by flashing
and performing a rapid succession of WHITE colour.
Following the light signal, it's possible to easily vent the heating system as follows:
1. Open the air vent valve in the hydraulic circuit above the circulator or open the cap of the
air separator in the pump housing, partially unscrewing it; when unscrewing the cap of the
air separator, beware of not losing the cap itself;
2. set the circulator to MAX position (maximum performance setting);
3. let the circulator run for a short period, according to the construction and the plant size;
4. once vented the system - the guide light (LED) stops blinking and the possible noise stops -
set the circulator as indicated in Par.10 Circulator setting
Repeat the procedure if necessary.
The plant cannot be drained by using the circulator.
CAUTION
With solar thermal systems, fill the system with mixtures prepared for that application. The
circulator cannot be used to mix the fluids in the system.
Do not touch the fluid or the circulator when the temperature is greater
than 60 °C. Hazard of scalding by simple contact.
Commissioning
20