Basic Rooftop Focus Guide.pdf - ProLon

Basic Rooftop Controller
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• Weighted Average (heating only): This is the same as “Weighted Average”,
except only zones with a heating demand are included in the calculation.
• Weighted Average (cooling only): This is the same as “Weighted Average”,
except only zones with a cooling demand are included in the calculation.
• Occupancy: If there is at least one slave found in this calculation that is
occupied (or overridden to be occupied), this math function will return 100%,
otherwise it will be 0%.
• Override: If there is at least one slave found in this calculation that is
overridden from unoccupied to occupied mode, this math function will return
100%, otherwise it will be 0%
• Global: When this is selected, ALL slaves on the system are included in the
calculation. The global weight of each slave device will be used in the calculations.
• Group Code: When this is selected, ONLY the slaves belonging to this group are
included in the calculation. There are 250 groups available, numbered 1 through 250.
The group weight of each slave controller belonging to that group will be used in the
calculation. When Group Codes are not being used, they are automatically set to
zero.
Units MIN MAX Default
N/A 1 250 0 (Not used)
• Poll Rate: The rate at which this master will update all the slaves on the system and
receive new information from them. Increase this value to alleviate network traffic.
Units MIN MAX Default
Seconds 1 250 3
During a Master/Slave data transaction, the exchanged data is as follows:
Master Slave:
• Supply temperature
• Outside temperature
• Occupancy status of the master
• Morning warm up command
• Override of Outputs 3, 4 or 5 based on the outside temperature
• Damper Override
Slaves Master
• Demand
• Group codes and weights
• Global weight
• Override status
• Supply temperature, if this slave is the source of the system’s supply
temperature (see below)
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