Section 7: Touchscreen Display Operation and SettingsPage 28
7.8 CIRCUIT CONTROL
The 3 available heating circuits in the Grant Aerona Smart
controller are connected and controlled via the following terminals
within the wiring centre (Refer to section 5).
Table 7-10: Circuit terminals
Heating circuit 230V Pump/Valve Terminals
1 13(L) & 14(N)
2 15(L) & 16(N)
3 17(L) & 18(N)
Each heating circuit can either have a circulation pump or
motorised valve connected to it.
In a conventional system the thermostat (or sensor) will stop the
pump or close valve when the actual circuit air temp reaches the
target circuit air temp.
7.8.1 THERMOSTATIC PUMP BLOCKADE
If a thermostat has been installed on any heating circuit, you have
the following choices in how to control that circuit:
1. With pump blockade 'ON' - Each heating circuit thermostat
will control the circuits circulation pump or motorised valve
(whichever is installed) for that circuit based on the air
temperature the sensor/thermostat is monitoring.
2. With pump blockade 'OFF' - The heating circuit will
continue to have circulation pump or motorised valve enabled
(whichever is installed) but the smart controller will drive
down the ow temperature to the minimum value to maintain
the target air temperature within the circuit i.e the circuit
remains active. This option would be best suited for open
loop room optimisation.
7.8.1.1 ENABLE THERMOSTATIC PUMP BLOCKADE
To enable Thermostatic pump blockade for a circuit:
1. Tap the Settings menu and then 'Service settings'. Enter
the password: 0000 on the keypad provided and tap 'Enter'.
Refer to Table 7-1 and Section 8 for full Service settings
parameters listing.
---
User settings
Service settings
Figure 7-10: Service Settings menu
2. Tap 'Installation controller'
3. Swiping the Touchscreen display scroll down to the desired
circuit and select by tapping. (Refer to Figure 7-11).
Installation controller
DHW settings
Circulation settings
Circuit 1
Circuit 2
Circuit 3
Heaters
Figure 7-11: Installation controller menu
4. Swiping the touchscreen display scroll down to 'Thermostatic
pump blockade'. Tap the icon to switch on. (Refer to Figure
7-12)
Circuit 1
Fixed preset water temperature 40°C
Decreasing fixed water temperature 4.0°C
Thermostat ecoTOUCH: 100
Room temperature correction 4.0
Thermostat pump blockade
Figure 7-12: Edit Circuit 1 settings
Tap the < button to navigate backwards to the home screen.
7.8.2 CIRCUIT STOP FROM PRESET TEMP
If a water temperature sensor has been installed on a mixing
circuit, you have the ability to control that circuit based on the
circuit ow temperature value.
1. With Circuit stop from preset Temp 'ON' - The water
temperature sensor will monitor the water temperature of the
ow into the circuit from the heat pump and directly control
the circuits circulation pump or motorised valve closed when
the target water temperature is achieved.
2. With Circuit stop from preset Temp 'OFF' - The heating
circuit will continue to have circulation pump or motorised
valve enabled (whichever is installed) but the smart controller
will drive down the ow temperature to the minimum value to
maintain the target water temperature within the circuit i.e the
circuit remains active. This option would be best suited for
open loop room optimisation.
7.8.2.1 ENABLE CIRCUIT STOP FROM PRESET TEMP
To enable Circuit stop from preset temp for a circuit:
1. Tap the Settings menu and then 'Service settings'. Enter
the password: 0000 on the keypad provided and tap
'Enter'. Refer to Table 7-1 and Section 8 for full Service
settings parameters listing.
2. Tap 'Installation controller'
3. Swiping the Touchscreen display scroll down to the
desired circuit and select by tapping. (Refer to Figure
7-11).
4. Swiping the touchscreen display scroll down to
'Circuit stop from Preset temp'. Tap the icon to switch
on. (Refer to Figure 7-13).
! NOTE !
'Pump only' will need to be enabled. If a mixer is installed,
'Circuit stop from preset temp' will not be available.
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