AM, EM, AQ, BA, ASW - IOM
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Ing.Ji
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í Jiránek
4.5 Manifolds
The distributor and collector connect single loops of the ground loop heat exchanger. Its proper
design is important for filling and venting the piping system. We recommend using professional
prefabricated distributors.
venting valve
manifold body
filling valve
shut-off valve
loop valve
compression fitting
Manifold description.
Following guidelines apply:
•
Each loop must be fully closable, closing armatures must have both distributor and
collector, otherwise the system cannot be vented
•
The loop should have the same position both on the distributor and collector
•
Both the distributor and collector must have the draining/filling valve with a cap
•
Dimension of the inlet valve should match the dimension of loops
•
Diameter of distributor/collector body should be dimensioned for max. flow speed 0,5m/s
4.6 Manifolds Location
There are 2 kinds of distributor positions.
4.6.1 Manifolds in the Collection Shaft
It is usually used in places where there is a big distance between the collector system and the
heat pump unit, or in places with lack of space inside the building. The advantage is that only 1
pair of piping is connected to the building, but with bigger dimensions.
When looking for the place for the shaft we must pay attention to the following:
•
Water connection availability (within reach of a hose from the building)
•
Electric connection availability (by a extension cord from the building)
•
Easy access to the shaft
4.6.2 Manifolds inside the Building
Advantage of this position is easy accessibility, handling, operation inspection, and relatively
small dimension of connection with the heat pump unit. The disadvantage is the necessity of
perfect insulation and holes needed for all loops of the ground source.
