CLIVET WSAN-YMi 101, Инструкция по установке, использованию и обслуживанию

Страница: 22 / 128

NOTE
In most applications this minimum water volume will be satisfactory.
In critical processes or in rooms with a high heat load though, extra water might be required.
When circulation in each space heating loop is controlled by remotely controlled valves, it is important that this minimum water volu-
me is kept even if all the valves are closed.
Heighe difference is between the highest point of the wateer circuit and the outdoor unit's expansion tank.
Unless the unit is located at the highest point of the system, in which case the installation height differnce is considered to be zero.
The pre-pressure (Pg) to be set depends on the maximum installation height difference (H) and is calculated as follows: Pg(bar)=(H
(m)/10+0.3) bar
To determine the maximum allowed water volume in the entire circuit, proceed as follows:

Determine the calculated pre-pressure (Pg) for the corresponding maximum water volume using the graph below.

Check that the total water volume in the entire water circuit is lower than this value. If this is not the case, the expansion vessel
inside the unit is too small for the installation.
Maximum water volume (L)
Pre
ss
ur
e
(b
ar
)
Pre-pressure = pre-pressure of the expansion vessel
Maximum water volume = maximum water volume in the system
A1 System without glycol
A2 System without glycol