Bosch WORCESTER GREENSTORE Instruction Manual download pdf (Page 10)

Collector hose

The task of the collector hose is to convey the heat transfer ﬂ uid through the

ground to gain a few degrees of heat. The hose is a thin-walled plastic hose of

type PEM 40 x 2.4 PN 6.3. SDR11.

Installation and backﬁ lling around the collector hose

Installation of the collector and backﬁ lling the soil around the collector hose

should follow applicable material and working descriptions and regulations.

It is important that the ﬁ lling material does not contain stones or other sharp

objects that can damage the collector hose.

Use hose pliers, not a saw, when cutting the collector hose. Deburr the end of

the pipe internally and externally. It is important that no dirt or debris enters the

system. Dirt and debris can cause a blockage in the heat pump.

Minimum permitted bending radius

Minimum permitted bend radius is 1 metre. If sharper bends are required an

elbow connector must be used. If the collector hose is damaged by too sharp a

bend, it can be repaired by using a straight coupling.

Maximum length of the collector hose

The maximum length of the collector hose is based on the heat transfer ﬂ uid

pressure drop. A heat transfer ﬂ uid consisting of bioethanol or glycol and water

is recommended.

Note

The maximum collector hose lengths

for heat pump models are provided in

the table.

In situations where the length of the

collector hose needs to exceed the

permitted value, you can connect the

hoses in parallel.

The heat pump and collector hose in general

Hose pliers

Heat pump model

Maximum length of

collector hose with a

single circuit (m)

PEM 40x2.4 PN 6.3.

Collector hose with 2 circuits

in parallel: Maximum length

per circuit (m)

PEM 40x2.4 PN 6.3.

Greenstore 6 600 -

Greenstore 7 500 1000

Greenstore 9 400 800

Greenstore 11 400 800

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 42 43

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Bosch WORCESTER GREENSTORE Instruction Manual Page 10

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