Gebwell Qi 10, Installation, Operation And Maintenance Manual

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18 v3-8 23052017
Collector installation in multiple loops
When using multiple collectors, shut-off and balancing
valves must be included in all circuits. Observe the valve
manufacturer’s instructions when installing the balancing
valves. However, the valves must be installed so that
adjustment and inspection can be arranged easily and
freezing is prevented. Vent the circuits one at a time and
adjust the flow in proportion to the each circuit lengths.
Try to use collection circuits of a roughly equal length.
Pressurised collector (Recommended)
A collector can also be pressurised. In this arrangement,
the diaphragm expansion vessel, which is available as an
accessory, is used.
6.2 Connecting ground cooling
Ground cooling works best when heat is collected by
means of a bored well. The temperature of a loop installed
in the ground or in a lake may rise high enough to prevent
the extraction of sufficient cooling power. The air in the
collector must be able to freely rise to the expansion
vessel. Venting must always be arranged at the highest
point of the collector. If there is a need to connect a
cooling radiator to the highest point of the collector, the
venting must be arranged through it.
A cooling accessory available for the heat pump can be
used to control/adjust the cooling. Building automation or
an air supply unit can also control the source pump (P1)
inside the heat pump. See instructions in the electrical
connection diagram.
Connection options
Direct connection to convection heater
Connecting mixing circuit for cooling with a heat
exchanger