Glow-worm Clearly Solar Controller - Manual (Page 7)

7
Cylinder reheat
The cylinder reheat function allows the cylinder to heat up
to the required temperature during a set time window, even
if the solar gain is insufficient. In this case the water can be
reheated using an external boiler or the immersion heater.
You can set up times for reheating the solar cylinder, refer
to Settings section in Instructions for Use.
Reheat delay
To prevent unnecessary cylinder reheating by a boiler or
an immersion heater, the Fluropro solar control includes
a reheat delay function. This function delays the cylinder
reheat by up to 30 mins if solar gain is available.
If the solar pump is off and the desired cylinder
temperature is not reached after the delay period, the
cylinder will be reheated using an external boiler or the
immersion heater.
The reheat delay function is activated by an engineer within
the Fluropro installer menu.
Legionella protection
The Legionella protection function is designed to kill germs
in the cylinder system.
When the function is activated, the cylinder, the hot water
pipes, and the circulation pump (if installed), are brought to
a temperature of 70°C on the programmed day(s) and at
the programmed time.
In doing so, the cylinder temperature is raised to 70°C
and the corresponding circulation pump is switched on
(if installed). First, an attempt will be made using solar
gain alone to reach the target temperature over a 90 min.
System Functions
period. If this is not successful, the Legionella protection is
carried out using an external boiler or an immersion heater,
whichever has been set up for this thermal protection. The
Legionella protection function will stop once a temperature
of at least 70°C has been maintained for a period of 30
minutes.
The installation engineer activates the Legionella protection
function within the Fluropro installer menu and specifies
whether the thermal disinfection should take place at 3:30
p.m. or at 4:00 a.m., i.e. mininal offset gain at 3:30 p.m.
versus cheaper electricity at 4:00 a.m.
Anti-seize protection for pumps
If no pumping has occurred for 23 hours, all installed
pumps are switched on for approx. 3 seconds to prevent
pumps from seizing.
Secondary recirculation
The Fluropro solar control includes a programmer channel
for a DHW secondary return. A secondary return should not
be used with Glow-worm twin coil unvented solar cylinders.
Calendar
The controller is equipped with a calendar so that it can
automatically adjust by 1 hr between GMT and BST. To
activate it, an engineer can simply enter the current date
within the Fluropro installer menu.
NOTE: In the event of a power failure, the controller only
has a power reserve of 30 minutes. After 30 minutes, the
internal clock stops and the calender will not automatically
resume function once power has been restored. In this
case the time and date will need to be reset.