17
E. OPEnTHERM
F. BuILT In FROsT PROTECTIOn
g. LOCkOuT REsET
ADVANCED FEATURES
The unit uses the OpenTherm protocol to control the boiler ow temperature set point in central heating operation. This
means that the boiler will run in its most efcient manner and offer signicant savings in energy over standard room
thermostats. It will also give more accurate and comfortable temperature control in the room where it is installed.
If the room temperature is close to its setpoint then the pump may run for extended periods without switching the burner
on. This is normal operation which reduces gas consumption whilst maintaining the desired room temperature.
If the temperature in the room falls below 5ºC, the boiler will re to maintain the minimum 5ºC setpoint regardless of
whether the timer is in an “off” period or not.
If the boiler is at lockout (OVERHEAT LOCKOUT, IGNITION LOCKOUT, NO WATER FLOW LOCKOUT, or LOCKOUT 6) it
is possible to reset the lockout from the programmable room stat by pressing the
key for more than 3 seconds.
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