Taconova TACOTHERM FRESH PETA 2, Operating Instructions Manual

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2.3 Safety equipment
2.3.1 Safety equipment installed
2.3.1.1 Main shut off valve
The ball valves (Fig. 2) are used to shut off the primary heat circuit.
Shut the ball valve in the event of a fault. The ball valve is shut off
once the handle is horizontal. If it is not clear which ball valve needs
to be shut off, shut off all ball valves.
The slow-closing piston valve (Fig. 3) is used to shut off the drinking
water circuits at the connection points. In the event of a fault, turn
the handle clockwise as far as it will go. If it is not clear which piston
valve needs to be shut off, shut off all piston valves.
2.3.1.2 Safety DCW valve (Option)
The safety DCW valve (Fig. 4) depressurises the station in the event of
excess pressure on domestic cold/hot water site. The safety valve is
calibrated for a pressure of 10 bar and does not need to be set during
commissioning.
A pressure relief line must be connected to the safety valve during
installation ( Ä
Chapter 5.3.2 ‘Connecting the pressure relief line to
the safety valve’ on page 36).
Ball valves
Fig. 2: Ball valve
Piston valve
Fig. 3: Piston valve
Fig. 4: Safety DCW valve
TACOTHERM FRESH PETA 2 / PETA 2 X Safety
V02.2020 11/2020 Item no. 215747 EA no. 1329 Operating instructions 12