ERT50 230v INSTRUCTION MANUAL
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OUTPUT:
By selecting the Output menu item, you can change the
control method used by the programmable thermostat -
either Pulse Width Modulation (PWM) or On/Off. The
default setting is PWM.
PWM only functions when the controller is operating in
Heat mode.
VALVE PROTECTION FUNCTION:
The Valve Protection (VP) function is provided as a way to
avoid the control valve from sticking or seizing when not
being used for long periods (e.g. during the summer).
This function is enabled by turning the Valve Protection
feature on or off using the PLUS or MINUS keys (default
setting is On).
When enabled, the VP function will turn on the
thermostat output to operate the control valve for a
period of 5 minutes every week - the Valve Protection
function will still operate even if the room temperature is
higher than 35 °C.
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