BACnet
Speed at which equipment communicates
What is Baud Rate
Where Refrigerant changes state
Saturation point
This “pops off” in the event of a system overpresurization
Pressure relief valve
Correct oil for R-410a refrigerant
Polyolester Oil
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Mings
Typically set with rotary dials or dip switches
What is address
Fuel set at 10” wc
This component locks out a boiler if the boiler stops getting water
Low water cutoff
A blend of two or more refrigerants
Azeotropic
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Meade
MS/TP stand for?
What is Master Slave/Token Passing
Tube Bundle where steam gives off its heat to water
Shell and tube heat exchanger
This acts as a giant air bleeder for a hot or chilled water system
Air separator
Temperature to be considered brazing
800 or above
Rule of thumb for suction temperature
Beer can cold
What is 127
Substance used to make a firewall in boilers
Refractory
When a boiler ramps the combustion blower up at the start this is called
Pre-purge
Uses magnets to keep an impeller wheel turning at a high RPM for compression
Centrifugal compressor
Rod used when brazing copper to steel
What is 45
BACnet stands for what?
What is Building Automation Communication Network
Term for pump getting air locked
Cavitation
The prevents a steam condensate station from overpressurization
The Vent
Rolling vane type belongs to which compressor
Rotary compressor
Where to find a wild service tech
Supply house