Grant Aerona - Page 32

Section 8: Service Settings - InstallerPage 32
Parameter Description
Circuit 1 This menu contains parameters related to operating the non-adjustable circuit. The non-adjustable circuit 1 preset temperature
will be automatically increased in order to guarantee heat for adjustable circuits 2 and 3.
• Circuit support - turn on or o󰀨 circuit support.
• Circuit name - name of the circuit set by user.
• Circuit type - This menu contains parameters related to selecting the type of a non-adjustable circuit.
- Radiators
- Fan-coil
• Regulation Method
- Fixed - constant set temperature of water in the non-adjustable circuit is maintained.
- Weather - Water temperature is related to Outdoor weather sensor. Outdoor weather sensor required
• Work Mode
- OFF
- Day – setting higher target circuit temperature.
- Night – setting lower target circuit temperature.
- Schedule – Day or Night mode is set depending on the time schedule.
• Heating circuit - switching the Heating Circuit On/O󰀨.
• Fixed preset water temperature - Heat pump stops when xed preset water temperature is reached.
• Decreasing xed water temperature - If Regulation method is xed value of temperature decrease for night mode.
• Heating Curve - View and adjust the heating curve for the circuit if the circuit is weather compensated
• Decrease water temperature - Flow temperature drop when in night mode if the circuit is weather compensated.
• Thermostat - Thermostat in control of circuit. Assignable options: None, Room panel, Wireless thermostat, Wired
thermostat.
• Room temperature correction – with thermostat support enabled automatic correction of room temperature is carried out
in accordance with the following formula:
- Target temperature with correction = Target temperature of the circuit + (Target temperature of the thermostat
assigned to the circuit minus Current temperature of the thermostat assigned to the circuit) x Room temperature
correction.
- By default, the Room temperature correction value is 4.0, and the value range is 0 - 10. It is necessary to nd
appropriate value of the Room temperature correction. The higher the coe󰀩cient, the greater the correction of
target circuit temperature. If the setting is “0”, the target circuit temperature is not corrected. Note: setting a value of
the room temperature coe󰀩cient too high may cause cyclical uctuations of the room temperature.
• Thermostat Pump Blockade - Parameters for the circuit pump being disabled when a room thermostat is active for the
circuit. Refer to Section 7.8.
- OFF - When the target air temperature is met or exceeded, the circuit pump is not disabled.
- ON - When the target air temperature is met or exceeded, the circuit pump is disabled.
Circuit 2 & 3 Circuit 2 & 3 contain similar functions to Circuit 1 and are dynamic based on the congured system. Below are additional
options for Circuit 2 and 3.
• Circuit type - This menu contains parameters related to selecting the type of a adjustable circuit.
- Radiators
- Fan-coil
- Underoor heating
• Pump only - Enables or disables the mixing function on the circuit.
- No – The circuit is mixer controlled. (Options for Mixer setup will be available in the Circuit menu)
- Yes – The circuit is not mixer controlled. (Circuit stop from preset temp will become active).
• Circuit stop from preset temp - Parameters for a circuit pump being disabled based on water temperature values.
- No – When the target water temperature value is exceeded, the circuit pump/valve is not disabled.
- Yes – when the target water temperature value is exceeded, the circuit pump/valve is disabled.
• Minimum temperature - Minimum target water temperature in the adjustable circuit.
• Maximum temperature - Maximum target water temperature in the adjustable circuit. If the Maximum temperature is
greater than 60°C, the controller will take 60°C as a maximum value.
• Valve opening time - The time between fully open and closed on installed mixing valve.
• Mixer deadband zone - Temperature insensitivity of mixer adjustment.
• Proportional Range - Mixer actuator proportional movement.
• Integration time constant - Time for actuator reaction for temperature deviation.
Heaters This menu contains parameters related to the operation of the DHW heater and bu󰀨er heater support.
• Bu󰀨er heater - enabling or disabling the bu󰀨er heater support.
• Bu󰀨er heater (delay) - delay time for switching on the bu󰀨er heater after a heat pump demand.
• DHW heater - enabling or disabling the DHW heater support. Output to Smart Immersion Relay. Refer to
• DHW heater (delay) - delay time for DHW heater ON from DHW demand start.
The options below apply to both bu󰀨er and/or DHW heater support when congured.
• Outside temp to activate the heater - external temperature value beyond which the DHW heater will be activated.
• Outside temp force the heater - external temperature value at which the heater support will be permanently switched on
during heat pump operation.
Flow meter This menu contains parameters related to the operation of the ow meter operation and the detection of no ow. Refer to
Appendix E.
• Flow meter - Flow detection is performed by selected option. (Default/Pulse)
• Default ow meter - default ow in the circuit, when exceeded, a no-ow alarm will be reported.
• Specic Heat Capacity - Coe󰀩cient of liquid used to transfer heat.
• Time detect - time after which the no-ow alarm will be reported.
• Time alarm erase - time after which the no-ow alarm will be reset. The controller will not report an alarm.
• No ow detection threshold - ow value below which the alarm “Flow error” will be reported.
• No ow detection hysteresis - if the actual ow rises above the value of No ow detection threshold plus No ow detection
hysteresis, the “Flow error” alarm will be turned o󰀨.
• Pulse rate - Flow sensor pulse rate to calculate ow.
• Pulse counting time - Flow sensor pulse count time duration.
• Too often alarm - too frequent no-ow alarm detection threshold. It allows to limit the frequent reporting of the no-ow
alarm.
Default Settings This menu saves and recalls stored defaults applied by the consumer.
• Restore default settings - Recall and apply saved default settings.
• Save current settings as default - Saves the current setup of the Grant Aerona Smart controller to memory.