5
Hydraulic connection
A separate interpretation of nominal flow rate
must be made for every system (see technical
data).
n
We recommend installing a buffer storage unit
as a hydraulic switch for hydraulically isolation
of the heating circuit.
n
Make a pipe-network calculation before instal-
ling the heat pump. After installing the heat
pump, it is necessary to perform a hydraulic
balancing of the heating circuit.
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Protect floor heating systems against exces-
sively high inlet temperatures.
n
Do not reduce pipe diameters for the supply
and return connections to the heat pump
before connecting a buffer storage-unit.
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Plan for air bleed valves and drain-off taps at
appropriate places.
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Flush the the system's entire pipe network
before connecting the heat pump.
n
One or, where necessary, several expansion
tanks must be designed for the entire hydraulic
system.
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The system pressure of the entire pipe network
is to be matched to the hydraulic system and
must be checked when the heat pump is
turned off. Also update the static-pressure form
supplied with the heat pump.
n
As delivered, the safety assembly consists of a
manometer, air bleeder and safety valve. It is
to be mounted to the pipe connection provided
on the indoor unit.
2
1
3
4
Fig. 42: Safety assembly
1: Manometer
2: Automatic bleeder
3: Safety valve
4: Indoor unit
n
The heat pump requires a constant, minimum
standing-water volume of ca. 10 litres per kW
of heating output to guarantee power for
defrosting and to assure a minimum running
time. Buffer storage unit.
n
The stop cocks supplied are to be positioned
directly at the connections for the heat pump
for the heater circuit inlet and return lines. The
shut-off valves each contain a thermometer.
Fig. 43: Shut-off valves
Turning the thermometer heads serves to close
or open the stop valves! The dial be brought
into the desired position.
n
Install the dirt traps delivered with the unit out-
side the heat pump in the return line. Ensure
that the dirt trap remains accessible for inspec-
tion.
n
Be sure to position one gate valve upstream
and another downstream of the dirt traps. This
ensures that the dirt traps can be checked at
any time without loosing water.
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The dirt traps must be checked during every
service of the system.
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Additionally, a hand-operated bleeder is
installed on the heat pump for additional
bleeding.
n
All visible metallic surfaces must be addition-
ally insulated.
n
Cooling mode via the heating circuit requires a
completely vapour diffusion tight insulation
along the entire length of the pipework.
n
All outgoing heating circuits, including the con-
nections for water heating, are to be secured
against circulating water by means of check
valves.
n
Before being placed in service, the system
must be thoroughly flushed. Conduct a seal
test and perform a thorough bleeding of both
the indoor unit and the entire system - repeat-
edly, if necessary.
Actual schemas for hydraulic integration can be
found on the internet at www.remko.de
REMKO CMF/CMT
42