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3.9
Non-return valve, cooling circuit
A non-return valve is pre-installed in the unit at the factory to prevent a short-
circuiting fl ow when the cooling pump is stationary.
3.10
Non-return valves, main circuit's
brine system
The delivery includes a non-return/throttle valve (int. 1" thread) which must
be mounted in the brine system's main fl ow between the heat pump and
cooling unit; see schematic diagram for connection. Make sure the valve is
installed with the correct fl ow direction; see the marking on the valve. The
valve prevents a short-circuiting fl ow when the heat pump's brine pump is
stationary.
3.11
Bleeding the cooling unit
A manual bleeding valve is mounted in the cooling unit on the cold side's
highest point. The valve is not designed to bleed the entire cold side system,
but only to bleed the parts of the exchanger system. Ensure that liquid drawn
out is collected and disposed of. Re-bleeding/checks may be needed after a
few days.
3.12
Connection to the brine system
The cooling unit is connected to the incoming and outgoing collector pipes
for the bore hole. The cooling unit's incoming fl uid connection is connected
to the brine pipe coming from the bore hole while its outgoing fl uid
connection is connected to the brine pipe that goes to the bore hole. Do not
forget to install the non-return valve in the main brine circuit.
3.13
Insulating the pipes
The brine pipes must be insulated against condensation right up to and
tightly against the cooling unit's box. Use insulation that is intended for
protection against condensation.
The pipes of the heating system must be insulated with thermal insulation.
15
CTC EcoComfort
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