Hydraulic Connection - Tuxhorn tubra-FRISTA-XL Instructions De Montage Et D'utilisation

4.3

Hydraulic connection

Sample illustration with optional accessories (circulation unit)
This illustration does not claim to be exhaustive; it is not a replacement for specialist
planning.
Designation Description
WW Hot water
KW Cold water
HVL Heating flow
HRL Heating return
ZI Circulation
ZV1 Zone valve 1
ZV2 Zone valve 2
Safety valve bypass line
Persons must not be endangered by hot water and vapour escaping. Two or more safety
valves' blow-off lines must be unrestricted; they must individually end at a drainage point.
The outlet diameter of the blow-off lines must match the dimensions of the connected safety
valve, include no more than two bends, and not exceed a maximum length of two metres.
The entire blow-off line must be enlarged if it is necessary to install more bends or lines in
excess of the maximum length. More than three bends and a length in excess of four metres
are not permitted.
The end of the blow-off line must be located 20-40 mm over a sanitary drainage object or
drainage funnel and clearly visible.
The end of the blow-off line must be protected from frost.
906.50.02.00
Last updated 2022/03/16 - 11 -
GB