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This next sample screen shows that the outdoor air temperature has dropped enough to
enable the boilers to operate. The system has been running long enough to satisfy all 4
Boilers 5 Minute Starting delay so they are all active at this point. It took roughly 20
minutes to get all 5 relays active since each has a 5 minute Staging Delay time period.
Keep in mind that although Relay #1 (OAT Enable) is active, nothing is connected to the
output because its only function is to provide an outdoor air enable signal for the boiler
staging.