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Relay Output #2 Programming ( Used for Boiler #1 )
As you can see, the first boiler stage is enabled to operate if the water temperature is
below 175°F and will remain on until it rises to 190°F. This first stage can only operate if
the outdoor air enabling relay #1 is active. Once activated, the boiler must remain on for
5 minutes (300 seconds) and once de-activated it must remain off for 10 minutes (600
seconds).
Since we are not resetting the operating setpoint, the Reset Source has been left as “None
Selected”. We also don’t require a “Logical AND” or “Logical OR” condition so they
have been left Not Configured. There is no need to enable this output from a schedule
since it uses an Enabling Relay (OAT Enable) which does require the schedule before it
can activate based on the Outside Air Temperature.