Daikin EHY2KOMB32AA — руководство по установке и защите от замерзания системы [87/236]

Daikin EHY2KOMB32AA [87/236] Installation
9 | Installation
Installer reference guide
87
EJHA04AAV3 + EHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P531180-1B – 2020.02
WARNING
Due to the presence of glycol, corrosion of the system is possible. Uninhibited glycol
will turn acidic under the influence of oxygen. This process is accelerated by the
presence of copper and high temperatures. The acidic uninhibited glycol attacks
metal surfaces and forms galvanic corrosion cells that cause severe damage to the
system. Therefore it is important that:
the water treatment is correctly executed by a qualified water specialist,
a glycol with corrosion inhibitors is selected to counteract acids formed by the
oxidation of glycols,
no automotive glycol is used because their corrosion inhibitors have a limited
lifetime and contain silicates which can foul or plug the system,
galvanized pipes are NOT used in glycol systems since the presence may lead to
the precipitation of certain components in the glycol's corrosion inhibitor.
Adding glycol to the water circuit reduces the maximum allowed water volume of
the system. For more information, see the manual of the expansion vessel.
Freeze protection by freeze protection valves
When no glycol is added to the water, you can use freeze protection valves to drain
the water from the system before it can freeze. To do so, install the following
parts:
a
c
c
b4
b3
b2
b1
b4
b3
*
a+b1+b2 Protection for the outdoor unit (*: there are 2 possibilities to connect b2; see below)
b3+b4 Protection for the field piping
c Isolation of water inside the house when there is a power interruption
Part Description
a+b1+b2 (Mandatory – Delivered as accessory).
a Connection piece for b1
b1 Freeze protection valve (for water drainage)
b2 Vacuum breaker (head-up for air supply)
These parts are necessary to protect the piping inside the outdoor
unit against freezing.
Note: These parts do NOT protect the field piping against freezing.

Содержание

Узнайте о важности правильной обработки воды и использовании защитных клапанов для предотвращения замерзания в системах с гликолем. Защитите ваше оборудование от коррозии.

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