CTC Union EcoZenith i350 H, Руководство по установке и обслуживанию

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2 CTC EcoZenith i350
Connector for
automatic bleeder
Important! Information on
air bleeding
For the product to work as intended, the system must be
fully bled.
It is extremely important that a basic bleeding of the product is carried out
systematically and carefully.
Bleeding devices must be fitted to the system’s natural high points. A
basic bleeding of the hot water tank can be carried out upon installation by
releasing the safety valve, which must be fitted to the top of the product.
The water must be circulated in the various subsystems: the radiator
systems, heat pump system and hot water charging system (to run the
pumps, diverting valve etc. manually, go into the menu Installer/Service/
Function test). Also move the diverting valve during the bleeding process.
A careful basic bleeding must be carried out before the system is put into
operation and the heat pump is started.
Tip:
Once basic bleeding is complete: increase the water pressure in the system
temporarily to approx. 2 bar.
• An automatic bleeder (supplied as standard for this product) must
always be fitted to the product’s expansion connection placed on the
top of the product.
• Important! Bleed any air remaining in the radiators (elements) and other
parts of the system after it has been in operation for a short time.
Small microbubbles gradually collect in the system’s “pockets”, and it
can take quite a long time before all the air is removed from the system.
When the pressure is temporarily increased, any remaining air pockets are
compressed and carried along more easily with the flow of water, and can be
released into the ventilation devices.
Tip:
Having the system pressure too low increases the risk of noise in the system
and of air being “sucked” in on the suction side of the pump. Keep an eye
on the system pressure. Bear in mind that the system pressure will vary in
the course of the year due to changes in temperature in the heating circuit,
which is completely normal.
If “gushing” sounds can be heard from the product, this is a sign of
remaining air.
A loss of heating functionality can also be a sign of remaining air.