Evolution Solar HFD
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12.5
Telephone relay connection
The
Evolution
boiler is designed to enable a phone relay to be connected for switching the boiler
on and off. This feature allows the boiler to be switched on and off remotely, from any location, by
means of a phone call. The relay is connected to the boiler via terminal strip
J7
(see “Electrical
Connection Diagram”). When the telephone relay contact closes the boiler switches on. When the
contact opens, the boiler switches off and remains in anti-frost protection and pump anti-block
mode.
12.6
Disconnecting the solar circuit
The
Evolution Solar HFD
boiler’s electronic control enables the solar circuit functioning to be
disconnected, if this should be required for maintenance or start-up. If the solar circuit functioning
is disconnected, the boiler will work as a standard oil-fired heating and instantaneous hot water
boiler, and will not use the solar energy from the site where it is installed.
To disconnect the solar circuit, firstly disconnect the "
Si
" and "
Scol
" sensors from the sensor
terminal strip
J3
("Si": terminals 19-21, and "Scol": terminals 17-18), and fit electrical bridges in their
place, shorting the inputs of these sensors (see “Electrical Connection Diagram").
12.7
Disconnecting the oil-fired boiler’s back-up energy supply
The
Evolution Solar HFD
boiler’s electronic control enables disconnection of the oil-fired boiler’s
functioning as an auxiliary power source for solar energy back-up, so that the only hot water
produced by the boiler will be that obtained from the solar energy of the installation site, with only
the solar circuit functioning.
To disconnect the oil-fired boiler’s back-up energy supply, select the "
OFF
" as the DHW setpoint
temperature (see
"Selecting the DHW setpoint temperature of the back-up hot water tank"
).
12.8
Keypad block function
This function protects the control panel from being accidentally or erroneously pressed while it is
being cleaned, by children or by unauthorised persons. When this function is enabled, the
electronic control will not react when any of the symbols or touch buttons on the control panel are
pressed.
To lock the keypad, keep your finger on the RESET touch button
for 5 seconds. The word "
LOC
" will flash on the display until the
control panel is unlocked again.
To unlock the keypad, place your finger on the RESET touch
button again for 5 seconds. The display will then return to its
normal status.
