Furnace
This part of a gas line helps to catch debris and moisture.
What is a drip leg.
These are the four components of the refrigeration cycle
What are the compressor, condenser coil, metering device and evaporator coil
R in the low voltage wiring represents this
What is 24v L1 Power
This prevents oxidation while brazing.
What is flowing Nitrogen.
This represents the equation to calculate subcooling.
What is SCT - LLT.
This will represent the units of measurement for gas pressure.
What is InWC
This component moves the refrigerant through the system.
What is the compressor
G in the low voltage control string represents this
What is L1 control string for the Indoor Fan
SLT - SST is the equation used to calculate this
What is Suction Superheat
The total percentage that you can add to a recovery tank's capacity.
What is 80%
This type of gas is used in a furnace from the factory.
What is natural gas
This scientific law that states heat migrates to cold.
What is 2nd law Of Thermodynamics
Y in the low voltage wiring represents this
What is the L1 control string for the outdoor unit.
This is the correct way to wire a drain line safety switch.
What is in series with 24v L1 power.
This is the proper charging method when a system utilizes a TXV.
What is subcooling.
The nominal outlet pressure on a gas valve utilizing natural gas.
What is 3.5 InWC
This component contains low pressure and low temperature vapor.
What is the evaporator.
The 24v wire L2 on a conventional split system runs from the furnace to what two components?
What are the thermostat and condenser.
How much airflow is needed to properly supply a 3 ton system?
What is 1200 CFM
When checking airflow, the Anemometer will display what unit of measurement?
What is Feet Per Minute (FPM).
This is the material used to flue a 90% furnace.
What is PVC
This component creates a pressure drop in the system.
What is a metering device
O/B in the low voltage wiring represents this
What is the reversing valve.
FPM x .75 x SqIn (return grille) / 144 represents what method for determining CFM?
What is the Traverse Method.
This is an acceptable micron level when pulling a system evacuation after 7 minutes of decay time.
What is 500-1000