10
Where there is more than one ground loop these must be connected in parallel with a means of
adjusting the flow. For surface soil heat, the pipe should be buried at a depth of about 1.8 meters
and the distance between the hoses should be at least 1 meter.
For bore holes the distance between the holes must be at least 15m.
Installation should be inspected before it is commissioned. The inspection must be carried out by a
suitably qualified person and should be documented. The above applies to closed loop heating
systems as well. If the heat pump is replaced the installation must be re-inspected again.
After filling the brine ,check circuit pressure. The pressure should be approx 2 bar. Minimum
system pressure 1 bar, Max pressure should not be over 3 bar.
Pipe Connections (Indoor Side):
Ensure all required safety devices, shut-off valves (as close to the heat pump as possible) and
particle filter are fitted
.
The safety valve must have a maximum 3 bar opening pressure and be
installed on the water outlet.
An expansion vessel that is the correct size for the system must be installed. Ensure that the
diaphragms and seals of the expansion vessel including any safety valves are suitable for the heat
transfer medium.
The entire length of the overflow water pipe from the safety valves must be inclined to prevent
water pockets and must also be frost proof if required.
Thoroughly flush the heating system.
Carry out a leak test.
Operating pressure: 2 bar. Max pressure must not be over 3 bar.
Installation
IMPORTANT:
When connecting to a system with thermostats on all radiators a bypass valve must be fitted,
or some of the thermostats must be removed to ensure sufficient flow through the heat pump.
Содержание GSWW60
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