Description:
Pi2R Micro Solar Geyser Controller only has one mode of operation as it cannot communicate with a display.
Connection without a Display
In this mode temperature can only be set with the existing AC thermostat. No extra settings
possible.
In this mode priority is always given to grid power (AC). This enables the unit to be manually
forced to use grid when DC power is available but not sufficient. Otherwise when DC is only at
10% (for example) then the water cannot be heated up quickly if the user so required.
Thus to automate functionality, AC needs to be switched through a standard geyser timer. This
timer will enable AC at set times to ensure acceptable water. The timer also ensures that DC is used
during sunlight hours as it removes AC during daytime.
Contrary to expectation AC is not always used during these times. AC will be available but not
used when the geyser is warm enough
Override
The geyser can be manually overridden in order to heat up once-off. Overrides will not repeat
automatically.
Timers
Two independent timers can be set when AC may be used.
Contrary to expectation AC is not always used during these times.
AC will not be used when:
- Water is warm enough
- Loadshedding
Temperatures
Two independent temperatures can be set. One for AC and one for DC/PV.
When the Temperature reaches the AC set-point then the unit will switch to PV power if available
(even during Timer operation).
It is therefore important to set the AC temperature lower than the DC temperature, otherwise power
saving will be hindered.
City of Capetown
Both Pi2R Micro Solar Geyser Controller and iX can be used under Capetown regulations, both are NRCS approved as
required.
