3. Installation
“With/without Buffer Tank”:
Set whether it has a buffer tank between heat pump unit and distribution
system or not.
“P1 for Heating Operation” means circuit pump for circuit 1should work for heating operation.
“P1 for Cooling Operation” means circuit pump for circuit 1should work for cooling operation.
“P2 for Heating Operation” means circuit pump for circuit 2 should work for heating operation.
“P2 for Cooling Operation” means circuit pump for circuit 2 should work for cooling operation.
If “without buffer tank” is set, both P1(circulation pump for circuit 1) and P2(circulation pump for
circuit 2) will only work when compressor is working in the same mode as the pump is set to. For
example, if P1 is set to “P1 for Heating Operation”, P1 will be turned ON only when compressor is
working in heating mode. If both “P1for Heating Operation” and “P1 for Cooling Operation” are both
selected, P1 will be turned ON when compressor is working in both heating and cooling mode. When
heat pump switches to DHW mode or stops after get the set temperature for heating or cooling, pump stops.
Control of Circu lation Pum p for circu it 1&2
:
If “with buffer tank” is set, both P1(circulation pump for circuit 1) and P2(circulation pump fo circuit 2)
will work once the distribution system has the heating or cooling demand, as per the pump setting, and
obeys following rules:
Actual temperature in buffer tank detected via Tc
≥2
0
℃
in heating. Only 20
℃
and above can be useful
for distribution system in heating operation.
Actual temperature in buffer tank detected via Tc
in cooling. Only 23
and below can be useful
for distribution system in cooling operation.
For example, if P1 is set to “P1 for Heating Operation”, P1 will start to work as long as the system
has heating demands and Tc reading is no lower than 20
℃,
even
if
the
unit
is
working
in
DHW
mode
or
stops
after
get
the
set
temperature
.
≤23℃
℃
“Working of P1(2) with High Demanding Signal” means whether P1(P2) should stop if signal for
“high demanding” is off. For detailed meaning of “High Demanding Signal”, please refers to part “D”
of “Terminal Block 4” of chapter “2.5.1”, “High demanding distribution system switch”.
3.1.6 Room temperature
sensor
:
Room temperature sensor (Tr) is recommended to be placed in a ideal position of the house to check the
room temperature. Thus the unit can have room temperature control mode (please refers to 9.04 Basic
Operation), and room temperature compensate function (please refers to 1.16 Room temp. effect on Heating
Curve
).
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