Gabarron CM15 Installation instructions and user manual - page 16
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6.4 CENTRAL HEATING OPERATION
First ensure that any external controls such as room thermostat or time clock are demanding heat.
To select the heating function, push the
button.
Pushing again will switch the function off and return display to just a
red dot.
When the heating mode is selected the display will show the temperature of the heating water.
We can modify the setting of the temperature of the water by pushing either the
button or
the
button and using the same buttons to adjust the value that flashes on the display.
The modified setting will be stored after a few seconds or instantly if we push the
button.
The heating setting can be varied between 8ºC and 85°C. The symbol H appears after the 85 value or before the 8
value. If we select this value, the heating will function in anti-freeze mode.
If the setting is higher than the actual temperature of the heating water and the DHW is not connected, the heating will
connect and a small red indicator of the consumption of heating resistances will light up.
6.5 ANTI-FREEZE MODE (Frost Protection)
It is possible to select an anti-freeze mode for frost protection during periods of inactivity. The power supply to the
boiler must be maintained.
By attempting to set a central heating temperature below the 8ºC value or above the 85ºC value the symbol H will
appear on the display. By selecting this value the heating will only work in anti-freeze mode i.e. if the boiler temperature
falls to 7ºC the heating will activate automatically.
6.6 HEATING MODULATION FEATURE
The advanced control board on the boiler will automatically modulate the heating output to the demand required to save
energy.
This function works by the boiler ‘learning’ and anticipating the time taken to reach the temperature level demanded by
the external thermostatic control. The power output is automatically adjusted therefore reducing power consumption
on warmer days or when another heat source is present.
An external ‘volt free’ control must be fitted across the terminals marked ‘TA’ on the PCB and the ‘bridge’ removed for
this function to be activated.
6.7 LOCKING THE CONTROL PANEL
It is possible to lock the buttons of the control panel to prevent any adjustment.
By keeping the
button pressed down for a few seconds, the padlock will light up
.
The control buttons of the boiler will be locked and no button will respond when pressed. Internally all the settings
remain the same and the boiler will function normally.
To unlock the buttons, press the same button down for a few seconds until the padlock light goes off. If the boiler is
disconnected from the mains or there is a failure in the house’s electricity supply, the buttons will also be unlocked.
6.8 PUMP ANTI-SEIZE FUNCTION
The advanced boiler control will automatically energize the pump for 10 seconds each month to protect it from seizing
during long periods of inactivity. The power supply must be maintained for this function to operate.