Installation; Check Valve - Helios WHSH HE 24 V (0-10 V) M Installation And Operating Instructions Manual

Installation and Operating Instructions
EN
Hydraulic Unit WHSH HE 24 V (0-10 V) M
Assembly, initial commissioning, maintenance and repairs must be carried out by authorised specialists (heating
contractor/contract installation company). (EN 5011 part 1 and VDE 1000 part 10 for work on electrical installations)
The flow is on the right side as a standard factory setting. However, the flow and return can be switched individually
on site.
The hydraulic unit allows the heating circuit to be blocked off. It has a block-off set with thermometers integrated in
the handles. The check valve in the return line serves to prevent unwanted circulation.
The three-way mixer with actuator is used to control the flow temperature and it also has a bypass. A portion of the
return is added to the flow via this bypass in order to control the flow temperature.
3 .1

Installation

The hydraulic unit must be thoroughly rinsed before it is placed in the piping.
The unit can be mounted in any position (horizontal, diagonal or vertical, in rising or falling sections).
However, it must be ensured that the air always flows through the valve in the direction of the arrow.
All installation locations must be checked for tightness after installation.
The connections must be retightened after installation of the hydraulic unit.
Always install the pump so that the motor shaft is in the horizontal position .
Remove the station (1) from the insulation. Remove the front insulation (4) and the insert block (2) for this purpose.
Determine the position of the connection point on the wall. Use the rear insulation as a drill template here.
Insert the spacer (3) in the rear insulation (5) and mount to the wall with the enclosed screw Ø 8x100 with SW12.
Then place the station (1) in the insulation (5) and mount to the wall with the enclosed screw Ø 8x100 with SW12.
3 .2

Check valve

Depending on the operating pressure, low gravity circulation is possible in heating systems despite the check
valve when the circulating pump is deactivated .
Check valves are not tight-closing flow inhibitors.
The fitting group is supplied preassembled. In case of normal operation, the positioning slot of the check valves must
be in the horizontal position.
Check valve
Closed
Operating positions (Fig .5):
Check valve closed > Operating position
Flow only possible in the conveying direction.
Fig .4
Fig .5
Open
4