ThermalZone::airLoopHVACTerminal returns an HVACComponent class, which is the 'generic' class that all AirTerminal object types inherit from (AirTerminalDualDuct types inherit from Mixer, not StraightComponent). Once you get the HVACObject, you need to 'cast' it to the proper base type in order to access the specific terminal class methods.
e.g.:
terminal = thermal_zone.airLoopHVACTerminal
if terminal.is_initialized
terminal = terminal.get # this gets the HVACComponent
end
# cast to AirTerminalSingleDuctVAVReheat class
if terminal.to_AirTerminalSingleDuctVAVReheat.is_initialized
terminal = terminal.to_AirTerminalSingleDuctVAVReheat.get
end
terminal.setMaximumAirFlowRate(rate)
Good Morning Eric and Luis thank you for the responses. This solved my blockage and I added in some if tests to address the ambiguity of what kind of terminal might get pulled depending on what the seed model has and it is working. Regards and a hearty thank you.
To avoid the casting, try Julian's to_actual_objectmethod.
https://unmethours.com/question/17616...
It seems like maybe the StraightComponentStraightComponent is the answer to my question.
But the use case I am struggling with is after doing terminal = thermal_zone.airLoopHVACTerminal.get including doing .empty? check before hand, when using an object method like .setMaximumAirFlowRate it returns a hash error on the Terminal object. It seems like the ambiguity on what kind of Terminal might be the issue but any pointers would be very much appreciated. Thank you.
Asked: 2021-12-14 11:00:16 -0500
Seen: 180 times
Last updated: Dec 15 '21
