Chapter- 80-99 Flashcards
What controls the steam pressure and monitors the combustion air intake
Fuel, air and water
What happens to the water in a boiler that is at 80% load of a sudden the flame goes off,
Water will shrink and cause a low water condition
What is installed between the boiler drum and the gauge to create a water seal protection for te gauge
Siphone
What is the replacement refrigerant for R—22
R-410a
How and why tube ends on a fire boiler are secure
Tube ends are beaded to allow for greater expansion and controls the tubes
I a HVAC system controlled by thermostat the difference is the difference between the
Set point and temperature at which the switch turns the system off
What is the purpose of a suction accumulation
It contains liquid refrigerant to allow evaporations prior to entering the compressor
What must be submitted to the code official when field assembly of boilers is required
Boiler inspection report
What do you call a reading from the center point of an impeller across to the gauge
Static pressure
What is the heart of a refrigeration system
Compressor
Which coal has the biggest level of fixed carbon content
Anthracite. 14,000
What is the cause of high excess in a condensate return tank with temperature up to 20 degrees above normal
Steam traps are stuck open
