Installing A Dhw Cylinder; Filling The Heating System And Checking For Leaks - Bosch Condens 7000 F Installation And Maintenance Instructions For The Contractor

Fig. 20 Safety set, 4 to 6 bar (illustration shows alternative installation
setup)
[1] Pressure relief valve 4 ... 6 bar
[2] Manifold with taps and flange
[3] fitting
[4] Extension
5.8.4

Installing a DHW cylinder

Make the connection of a DHW cylinder to the flow and return on site.
The required external cylinder primary pump can be controlled by the
control unit ( Technical documentation of control unit).
5.9

Filling the heating system and checking for leaks

Before commissioning, check the heating system for leaks to prevent
problems during operation.
To ensure efficient ventilation:
▶ Open all heating circuits and thermostatic valves prior to filling the
system.
▶ Open non-return valves at the pumps.
▶ Put all non-return valves at the venting position.
CAUTION:
Health risk through contaminated drinking water!
▶ Observe all country-specific regulations and standards regarding the
prevention of drinking water contamination.
▶ In Europe, observe standard EN 1717. In the UK observe the Water
Supply (water fittings) Regulations 1999.
Condens 7000 F – 6720871560 (2019/11)
NOTICE:
Risk of property damage due to unsuitable heating and fill water!
Unsuitable heating and fill water can cause corrosion and scale
formation and/or shorten the service life of the heating system.
Warranty claims for the heat sources will only be considered provided
the water quality requirements have been met and the operator's log has
been maintained.
▶ Observe the details regarding water quality in the operator's log.
▶ If necessary, treat heating and fill water.
▶ Provide system separation by means of heat exchangers when using
oxygen-permeable pipework (e.g. underfloor heating system).
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NOTICE:
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NOTICE - material damage due to positive pressure during leak
testing!
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Pressure, control and safety equipment may be damaged through
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excessive pressure.
▶ After filling the heating system, pressure test to the excess pressure
of the pressure relief valve.
▶ Prior to filling the heating system, carefully read and observe the
enclosed operator's log on water quality.
0010013915-001
▶ Open safety caps on all automatic air vent valves.
▶ Open the fill and drain valve.
▶ Slowly fill the heating system using a filling facility. During the filling
observe the pressure gauge.
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Fig. 21 Pressure gauge for sealed systems
[1] Red needle
[2] Pressure gauge needle
[3] Green marking
▶ Close the water tap and the DFV once the required test pressure has
been reached.
▶ Check the connections and pipework for leaks.
▶ Vent the heating system via the radiator air vent valves.
▶ Top up with water if the pressure drops as a result of venting the
system.
▶ Remove the hose from the DFV valve.
▶ Carry out a tightness test in accordance with locally applicable
regulations.
▶ Once the heating system has been tested and no leaks have been
found, set the correct operating pressure.
▶ Put all non-return valves at the operating position.
▶ Mark the minimum and maximum pressure on the pressure gauge
when the system is cold.
Installation
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6 720 615 876-59.2T
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