Calpeda Duomat-E Series, Инструкция по установке, эксплуатации и обслуживанию

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2.18 Pipework: For optimum performance inlet and outlet pipework must be a
minimum of 15 mm pipe.
2.19 Static outlet pressure: The static outlet head must be 3 metres below pump
maximum cold fill pressure (vertically above the appliance).
2.20 Noise: A flexible hose is supplied as standard which will minimise the
transmission of noise and vibration from the pump to the pipework connected
to the appliance outlet. However, care must be taken when mounting the
unit that any noise is not amplified through loose panels or pipework.
2.21 Flexible hose: Only use the hoses supplied with the unit.
2.22 Isolating valves: Separate system isolating valves (non-restrictive) must be
fitted to allow easy service of the unit. Isolating valves must be mounted where
specified to allow the system isolation and removal of the unit if needed.
See Section 4.15 for installation details.