Installation manual
29
4.2.9 W
EATHER
C
OMPENSATION
The biggest factor in defining the heat demand required for a building is typically the weather. Which affects the
required heat load for a building. Weather compensation works by adjusting the set point temperature of the heating
system to reflect changes in the outside (external) temperature, allowing the heat pump to operate more efficiently.
Weather compensation is determined by the heat curve settings for the system. The pre-defined heating curves should
only be modified by an installer to best match the heat emitters used.
4.2.10 H
EATING
CURVES
Each zone is associated to a pre-set heat curve. Selecting the zone and pressing ‘Next’ will allow you to assign a pre-
set curve for typical heat emitters. The four pre-set heating curves are shown in table 4.
Each curve can be reviewed and modified to meet the requirements of the heating system by selecting ‘Edit’. This will
bring you to a default heating curve for the selected emitter. Selecting ‘Next’ will select the default heating curve.
The pre-defined curves have recommended temperature ranges for each heat emitter;
The values that generate the heating curve graph can be changed, by scrolling through the temperature value to adjust
and setting it.
This is validated using the ‘Set’ button when complete (see figure 29).
Heat Emitter Type Max. Water Temp. at Low External Temp.
SmartRad 48°C -10°C 35°C 10°C
Underfloor Heating 30°C -10°C 25°C 12°C
Standard Radiator 55°C -10°C 40°C 15°C
Custom (Flat Line) 55°C -15°C 55°C 15°C
Min. Water Temp. at High External Temp.
Table 4: Heating Curve Parameters
Figure 29: SmartRad Heating Curve
•
The green line on the right indicates the maximum outdoor temperature at
which space heating stops running (DHW is still adjusted independently).
•
The yellow line on the left indicates the minimum outdoor temperature at
which the bivalent heating system starts working and may need to be ad-
justed depending on the location/property.
•
The red line indicates the temperature that the water will be heated to,
based on the outdoor temperatures.
•
The ‘Default’ option will reset the pre-defined values. Set will save entered
values.
NOTE: I
F
THE
HEAT
PUMP
IS
IN
HEATING
“ON”
MODE
AND
THE
MAXIMUM
OUTSIDE
TEMPERATURE
IS
REACHED
,
THE
HEAT
PUMP
WILL
REVERT
TO
AND
MAINTAIN
THE
SET
BACK
TEMPERATURE
UNTIL
THE
HEATING
IS
TURNED
OFF
AND
ON
AGAIN
. T
O
PREVENT
THIS
,
IT
IS
RECOMMENDED
TO
SET
YOUR
SUMMER
TEMPERATURE
(
SEE
HEAT
CURVES
SECTION
4.2.10),
AT
A
HIGHER
VALUE
(
THE
DEFAULT
OUTSIDE
AMBIENT
SETTING
IS
18°C).