-
INSTALLER
7 & 11kW HRC
70
HIGH TEMPERATURE HEAT PUMP
-
14
Heat Pump model
HRC
70
7 & 11 kW
Minimum nominal flow rate
1500 L/h
Maximum pressure
2.5 bar
Minimum piping Ø:
if distance* between HP & Pilot < 10m
22/24
if distance* between HP & Pilot < 15m
24/26
if distance* between HP & Pilot < 25m
28/30
if distance* between HP & Pilot < 50m
32/34
* total distance both ways
Q (m
3
/h)
H (mCE)
Q (m
3
/h)
H (mCE)
Make sure that all sections of piping are fi tted with functional and
accessible air valves.
The hydrualic connection between the Heat Pump and the Pilot
can be made using steel, copper or PEX piping with a diametre of
at least 1’’.
The hydraulic kit must be fi tted using fl exible piping on the water
inlet and outlet points of the Heat Pump in order to prevent any
vibrations being transmitted to the heating system.
3.2.3 - Setting the four diff erent pump speeds
3.2.2 - Hydraulic connection: Heat Pump circuit
When the heat pump is running at full power the fl ow rate
must be high enough to ensure that the temperature diff erence
between the outgoing and incoming water is no greater than 5°C
(take a temperature reading when the HRC
70
is in heating mode
and the system is fully functioning).
The hydraulic connection section between the Heat Pump and
the Pilot must be suffi
cient.
Using the tables below, determine the minimum inner diametre
of the connection piping needed depending on the distance*
which separates the Heat Pump from the Pilot:
3.2.4 - Heat Pump and Pilot relief valve
The Heat Pump and the Pilot are both fi tted with a pressure relief
valve.
The pressure relief valve on the Heat Pump sets the maximum
acceptable pressure in the installation (2.5 bar when hot). The
maximum service pressure on the Heat Pump must, consequently,
be lower than 2.5 bar.
Example : If the Heat Pump is positioned 5m below the Pilot , the
pressure reading on the Pilot would be 0.5 bar less than the
real pressure of the water in the Heat Pump. In this case, the
maximum pressure for the Pilot would be 2 bar.
Therefore it would be advisable to fi ll the heating circuit at
an intermediary pressure (between 1 and 1.5 bar).
In case of operating with boiler back-up these relief valves
MUST
be fi tted in addition to the ones which the boiler is already
equipped with.
The connections and evacuation conduits for the pressure relief
valves must be made from materials which are resistant to high
temperatures and corrosion.
HRC Pilot
HRC Heat Pump
HPRV
PS
S
PS
: Pilot pressure sensor
RV
: Pressure relief valve for Pilot, set at 3 bar
HPRV : Pressure relief valve for Heat Pump set at 2.5 bar
Choose speed 3 or 4, depending on the distance between the
Heat Pump and the Pilot.
