Pipework Connections - STIEBEL ELTRON ESH 120 Trend GB Operation And Installation Manual

iNSTALLATiON
Appliance installation
9.2

Pipework connections

10
9
1 Domestic hot water outlet (DHW out), ø22 mm
2 Pressure-compensated cold water connection (bal. CW),
ø22 mm
3 Main cold water inlet (CW in), ø22 mm
4 Protective pipe strainer
5 Pressure reducing valve - 0.3 MPa
6 Expansion vessel connection point, 1/2" BSPM
7 Temperature and pressure limiter (90 °C / 1 MPa), 1/2"
8 Expansion valve - 0.8 MPa, 1/2"
9 Tundish
10 Flexible Y hose
CAUTION Injury
Do not use the pressure-compensated cold water con-
nection for any outlets other than mixer taps and bidets.
Do not use the pressure-compensated cold water con-
nection for supplying all cold water outlets.
f Flush the cold water line before connecting it to the cold
water supply, to clear it of any flux and contamination.
f Lift off the cylinder cover to gain access to the combination
valve and the other connections.
f Position the DHW cylinder so that it fits against the DHW line.
Expansion vessel connections
f Check the expansion vessel(s) and the hose connections for
leaks.
f Mount the expansion vessel and the retainer on a suitable
wall, close to the DHW cylinder.
f If the supplied flexible connector is not used, the expansion
vessel should be connected to the multifuction valve using
copper tube and the pipe run kept as short as possible.
8 | ESH Trend GB
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4
7
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Combination valve
- The combination valve on the top of the DHW cylinder is fit-
ted at the factory and is watertight.
- If required, the combination valve can be rotated up to half a
turn in either direction to align it with the connection pipes,
without losing its seal.
9.2.1 Connecting the DHW outlet
f Connect the DHW distribution line to the DHW outlet of the
combination valve.
9.2.2 Establishing the cold water supply
5
Note
The sealed unvented appliance is designed for a supply
6
pressure of up to 0.8 MPa. For pressures greater than
0.8 MPa, an additional pressure reducing valve must be
installed in the supply line to the appliance.
f Connect the cold water supply to the cold water connection of
the combination valve.
Balanced cold water connection (optional)
Note
The following instructions only apply to bidets in which
the water flows downwards out of the fitting. For bidets
in which the water is sprayed, a vent slot type AA, AB or
AD is required.
f If no balanced cold water supply is required, screw tight the
cap supplied.
f If a balanced cold water supply with mains pressure is re-
quired for a shower or a bidet, remove the cap. The cap can
then be connected to the cold water supply for the shower or
the bidet on the combination valve.
Note
To compensate the thermal expansion and prevent the
shower control from tightening up, we recommend in-
stalling a mini expansion vessel in the balanced cold
water inlet line.
Flexible Y hose
The flexible Y hose is preformed into the correct shape.
f Connect the inlet ends with the expansion valve and the tem-
perature and pressure limiter.
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