Connecting Potable Water Pipe - Bosch TSS Series Installation And Maintenance Instructions Manual

Hydraulic connection
NOTICE:
Collector damage from twisted pipes!
▶ Counterhold when tightening the fittings on the angled ferrule.
▶ Push angled ferrule with O-ring [3] against the collector connection
and secure with union nut.
NOTICE:
Leak from the storage tank connection!
The gasket can be damaged by over-tightening of the screw connection.
▶ Hand-tighten the storage tank connection pipe and then tighten with
a ½turn using a spanner (corresponds to approx. 35 Nm).
▶ Screw the storage tank connection pipe [7] with a gasket [6]
to the solar return connection.
▶ Push the long solar hose [5] with hose clip onto the angled ferrule
and storage tank connection pipe.
▶ Tighten the circlip when hose clip [4] is located directly in front
of the bead.
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Fig. 68 Installing the return pipe
Installing the return pipe bracket
▶ Position the bracket at the edge of the collector so that the pipework
runs with an ascending gradient to the storage tank connection.
▶ Tighten the screws.
Fig. 69 Installing the bracket on the collector frame
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4 5
5
1 3 4
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10.3

Connecting potable water pipe

Installing pressure relief valve and expansion vessel
WARNING:
Risk of scalding at the pressure relief valve!
Due to differences in temperature and pressure in the storage tank,
water may escape from the pressure relief valve.
▶ Ensure that the liquid drains away in a controlled manner.
▶ Avoid spending too much time near the system while it is operational.
▶ Install an on-site expansion vessel (≥ 12 litres) on the cold water
storage tank connection.
If the water inlet pressure at the storage tank is higher than 4 bar:
▶ Install a pressure reducer and set to a max. of 4 bar.
NOTICE:
System damage due to overpressure.
To ensure the connection between the water inlet and pressure relief
valve remains clear:
▶ Do not install any extra accessories or shut-off valves.
▶ Install the pressure relief valve 8 bar [3] on the cold water storage
tank connection in such a way that the lever for venting can be set to
the maintenance position [6].
▶ Connect the cold and hot water pipes on site in accordance with local
regulations.
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5
Fig. 70 Connecting potable water pipework
[1] DHW storage tank connection
[2] Cold water storage tank connection
[3] Pressure relief valve 8 bar (with non-return valve), lever in
operating position
[4] Water outlet opening
[5] Expansion vessel (on site)
[6] Lever in maintenance position (venting)
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3
4
6
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TSS – 6720887696 (2018/05)