Grant Aerona - Weather Compensation Setup; Adjusting the Heating Curve

Section 6: System Conguration with Touchscreen Page 21
• Would you like to start conguration?
If a system has already been Congured you will be
prompted to conrm you wish to overwrite the previous
setup.
• How is heat transferred from the source?
Conrm if you are using a Bu󰀨er/Volumiser, Low Loss
Header that the Grant Aerona Smart controller will manage or
if heat is transferred directly to the primary circuit.
• Is DHW in the system?
The Grant Aerona Smart controller will manage the DHW
cylinder as well as prioritize DHW on a demand.
• Is Circulation pump for DHW in system?
This would be enabled if you require the Grant Aerona Smart
controller to manage a secondary circulation pump.
• Is Outdoor temperature sensor in the system?
This will enable the weather control features of the Grant
Aerona Smart controller.
• Source of Outdoor temperature sensor
Assign an Outdoor temperature sensor. The 'ecoMULTI' is
the outdoor weather sensor supplied with your Grant Aerona
Smart Controller kit and should be the only option you
choose. Refer to Section 3.4.1.
• Do you want to Congure circuit 1, 2 or 3?
Conguration of Heating circuits. Circuit 1 is non-mixing and
this is indicated with a note that Circuit 1 can not have a
mixer.
• Circuit Name
To amend the name of a circuit e.g., 'Ground Floor' tap the
change name button which will open a qwerty keyboard. To
nish tap the enter key.
• Choose circuit mode
Assign the heating emitter type for the circuit. This could be
'Radiators' or 'Underoor heating'.
• Choose circuit control method
Assign a control method from either 'xed' or 'weather'
control. Individual circuits can be assigned di󰀨ering methods
and can be amended later via the Circuit settings within the
system settings menu.
• Fixed Set point water temperature (Fixed Control)
The circuit will operate on a xed ow temperature. This is
the default day ow temperature.
• Decreasing set point water temperature (Fixed Control)
This is the temperature the system ow will drop by on
scheduled night/unattended periods.
• Heating curve edit (Weather Control)
Congure the heating curve for the calculative weather
control adjustments for set-point temperatures. Refer to 6.4
for further information on editing the heating curve.
• Decreasing set point temperature (Weather Control)
This is the temperature the system ow will drop by on
scheduled night/unattended periods.
• Will circuit be controlled with a Mixer?
Conrm if the circuit will be controlled by a motorised mixing
valve. (Not applicable to Circuit 1)
• Mixing valve opening time
Congure the valve opening time to allow the software to be
able to calculate the opening times for correct temperature
mixing. (Refer to Appendix C for further information on the
mixing valve).
• Circuit thermostat choice
Congure a thermostat to a circuit. A circuit could be
uncontrolled, use the touchscreen display or a wired/wireless
thermostat. If a wired/wireless is chosen, the touchscreen
display will begin the pairing wizard to be followed to pair the
individual thermostat to this circuit. Refer to Section 7.3.1.4.
We recommend at least one circuit be controlled by the
supplied touchscreen display.
• Circuit Summary
The circuit summary displays the parameters you have
dened. The circuit structure displays as a pump but is a
230V switched live output (labelled on the wiring centre as
H1-P, terminals 13 and 14). This could be connected to a
2-Port motorised valve as is common in the UK. (Refer to
Section 5, Figure 5-3).
• Do you want to check congured system?
Conrming will activate the manual control function (Refer
to Section 8 and Figure 8-2) on the touchscreen display.
The components that you have congured via the creator
will be shown on the screen. There will be both an icon on
the operational button area and the terminal block numbers
to which they should be wired to on. Refer to Section 5 for
the terminal blocks and associated devices that they control.
Tapping the icon will switch the internal relay and send a
relevant voltage to activate.
6.3 WEATHER COMPENSATION
6.3.1 HEATING CURVE
Weather compensation can be enabled if an Outdoor Weather
sensor is connected. The Outdoor Weather sensor should be
enabled and select Regulation method as 'Weather'.
The circuit water target temperature is calculated based on the
ambient temperature outside the building. The colder it is outside,
the higher the water temperature in the circuit will be.
The heating curve is congured per circuit either during system
conguration or via the service menu of the controller.
0.5
2
Heating Set point
Curve
Shift
Heating curve selection
External temperature
0
1020
15
30
22°C
28°C
33°C
37°C
41°C
44°C
45
60
-20-10 -30
Figure 6-7: Heating curve adjustment
The heating curve selection will provide the line graph The heating curve selection will provide the line graph
representing required target water temperature against representing required target water temperature against outdoor air outdoor air
temperaturetemperature (Refer to Figure 6-7)(Refer to Figure 6-7). .
1. 1. Tap Tap ˄˄ or or ˅˅ of 'Curve' to align the curve to set a 45°C @ -5°C of 'Curve' to align the curve to set a 45°C @ -5°C
'External temperature' as a starting point. Refer to Table 6-1 'External temperature' as a starting point. Refer to Table 6-1
for recommended heating curve settings.for recommended heating curve settings.
2. 2. To further adjust should the temperature points not be To further adjust should the temperature points not be
satisfactory, satisfactory, Tap Tap ˄˄ or or ˅˅ of 'Shift' to move the set curve up or of 'Shift' to move the set curve up or
down.down.
Table 6-1: Recommended Heating Curve
Heat Emitter Initial Curve Setting
Fan-Coil 1.2 - 1.6
Radiators 1.2 - 1.6
Undeoor 0.2 - 0.6
Refer to Section 6.3.2 for advice on how to further alter the Refer to Section 6.3.2 for advice on how to further alter the
heating curve.heating curve.
The Grant Aerona Smart Controller can increase or decrease the
Heat pump target ow temperature, calculated in accordance
with the heating curve, if it exceeds the temperature range for the
given circuit set in controller service menu.