Daikin EHY2KOMB32AA — руководство по установке и защите от замерзания системы отопления [85/236]

Daikin EHY2KOMB28AA [85/236] To protect the water circuit against freezing
9 | Installation
Installer reference guide
85
EJHA04AAV3 + EHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P531180-1B – 2020.02
A draining tap at the lowest point of the installation.
An overflow valve of 3 bar in the input pipe at a distance of no more than
500mm from the unit. Between the unit and the overflow valve there may be no
valve or constriction.
An expansion vessel in the space heating inlet (in the B-pack or in the
installation).
If there are pipes running up, use a check valve within close distance of the unit.
This prevents a thermosiphon effect from occurring during tap water operation.
Note that the optional valve kits EKVK4A and EKVK6A can also be used to connect
the space heating installation.
NOTICE
Make sure that the straight brass fitting connections are tightened thoroughly to
prevent leakage. Maximum torque is 30N∙m.
9.6.5 To protect the water circuit against freezing
About freeze protection
Frost can damage the system. To prevent the hydraulic components from freezing,
the software is equipped with special frost protection functions, that include the
activation of pump in case of low temperatures.
However, in case of a power failure, these functions cannot guarantee protection.
Do one of the following to protect the water circuit against freezing:
Add glycol to the water. Glycol lowers the freezing point of the water.
Install freeze protection valves. Freeze protection valves drain the water from
the system before it can freeze.
NOTICE
If you add glycol to the water, do NOT install freeze protection valves. Possible
consequence: Glycol leaking out of the freeze protection valves.
Freeze protection by glycol
Adding glycol to the water lowers the freezing point of the water.
The required concentration depends on the lowest expected outdoor temperature,
and on whether you want to protect the system from bursting or from freezing. To
prevent the system from freezing, more glycol is required. Add glycol according to
the table below.
INFORMATION
Protection against bursting: the glycol will prevent the piping from bursting, but
NOT the liquid inside the piping from freezing.
Protection against freezing: the glycol will prevent the liquid inside the piping
from freezing.
Lowest expected outdoor
temperature
Prevent from bursting Prevent from freezing
–5°C 10% 15%
–10°C 15% 25%

Содержание

Узнайте, как правильно установить систему отопления и защитить её от замерзания. Важные советы по использованию антифриза и защитных клапанов.

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