Aerona Smart Controller Display; Heating System Controls; Space Heating - Grant Aerona 290 Installation & Operating Instructions Manual

Table 18-1: Heat Pump Status
The heat pump is turned on.
ON
The heat pump is turned off regardless of the
conditions in the system.
OFF
The heat pump is switched on and off
according to the set time schedule for the
heat pump.
SCHEDULE
18.4.2 POWERING HEAT PUMP OFF FROM YOUR
CONTROLLER
To switch the heat pump OFF:
1. Follow the steps in 18.4.1 to step 5, and tap 'OFF'.
18.4.3 POWERING HEAT PUMP ON/OFF MANUALLY
To switch the heat pump off: Switch the external electrical isolator
to OFF.
! NOTE !
This isolator is usually located on the outside wall of your
house next to the heat pump.
To switch the heat pump back on: Switch the external electrical
isolator back to ON.
! CAUTION !
If the electrical supply to the heat pump is switched off,
e.g. at the external isolator, the frost protection function
will NOT operate.
In order for the heat pump to start (when it is switched ON) there
must also be a 'demand' from the heating system controls. Refer
to the Section 18.6 'Heating System Controls' section of these
User Instructions.
18.5

AERONA SMART CONTROLLER DISPLAY

The operation of the Grant Aerona 290 heat pump is indicated in
the top right of the touchscreen display. The red 3 waved lines
symbol indicates there is a 'demand' being communicated to the
heat pump from the smart controller.
To view real time information on the status of the heat pump follow
steps 1-3 in section 18.4.1 to access the 'heat pump schematic'
screen. This displays active information from the heat pump such
as fan, pump & compressor status and water temperatures.
Section 18: User Instructions
18.6

HEATING SYSTEM CONTROLS

Your Grant Aerona 290 heat pump is controlled by the Grant
Aerona Smart Controller and is designed to provide:
18.6.1

SPACE HEATING

The Grant Aerona Smart controller is designed to manage up to 3
space heating zones, where a user can specify set schedules for
Day (occupied) or night (unoccupied) time periods.
The space heating can be managed by:
•
Thermostats - This allows the required air temperature to
be set. When the air temperature is below this setting the
thermostat will 'call' for the heat pump to operate to provide
heating. This is usually located in a downstairs area such as
a hallway or living room, but you may have more than one
room thermostat if your heating system is 'zoned'.
•
Fixed Water temperatures - The 'zone' (circuit) is set with
a fixed temperature. When the schedule comes 'ON', it will
'call' for the heat pump which delivers a set fixed output (flow)
temperature for the 'circuit'.
•
Weather compensation - The 'Zone' (circuit) is set with a
climatic curve, which measures the outdoor (ambient) air
temperature against a desired output (flow) temperature
when the heating schedule is 'ON' and 'calling' the heat pump
'ON'.
! NOTE !
For the heat pump to operate to provide heating, the
schedule must be in an ON period for heating AND the
room thermostat must be 'calling'.
For further information on the operation and configuration of
space heating zone settings, refer to Section 7 of your supplied
manual:
• DOC 0203 - for systems without Grant QR pre-plumbed
cylinder
• DOC 0205 - for systems with Grant QR Smart pre-plumbed
cylinder
18.6.2 HOT WATER
In addition to 3 space heating zones, the Grant Aerona Smart
controller is designed to manage a hot water cylinder, where a
user can specify both schedules for 'ON' and 'OFF' time period for
heat to be provided and desired water temperature with the aid of
a cylinder water temperature sensor.
The installer should discuss and configure the desired
temperature of the hot water and a level deemed too low requiring
more heat (hysteresis).
When the schedule for the hot water is ON, if the cylinder
temperature difference is greater than the 'hysteresis' value:
•
The heat pump will be 'called' to provide heat for your hot
water cylinder.
•
The Smart controller will shut off any active space heating
zones, and divert all heat generated to your cylinder. This is
known as "Hot water priority".
•
The heat pump will stay ON until your cylinder has reached
it's set temperature.
•
'Hot water priority' will then be disabled, starting your space
heating zones.
•
! NOTE !
If your cylinder falls below the 'hysteresis' level again
within a scheduled ON time period, 'Hot water priority'
will re-engage.
For further information on the operation and configuration of hot
water cylinder settings, refer to Section 7 of your supplied manual:
• DOC 0203 - for systems without Grant QR pre-plumbed
cylinder
• DOC 0205 - for systems with Grant QR Smart pre-plumbed
cylinder
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