Safety
PPE stands for???????
Personal Protection Equipment
LEL stands for and UEL
Lower Explosive Limit and Upper Explosive limit
Name the five air types for a gas furnace
primary, secondary, excess, dilution, tramp
Helps control gas pressure going to unit.
Regulator
What appears once in a minute, twice in a moment, but not once in a thousand years?
The letter M
When you have a leak in a heat exchanger....
LOCK OUT TAG OUT!!!!!!!!!
Three things need for combustion
Fuel, oxygen, and Heat
Out of the five Air types for a gas furnace which one is due to leaks?
Tramp air
Venturi
What is a group of Crows called
A murder
What to things matter (in terms of life or death) when being shocked?
Current and path
BTU stands for....
British Thermal Units
This Air Blends with gas before ignition.
primary air
Three types of gas valves in residential
Intermittent
Direct ignition
What animal served with the U.S marines and fought in WW2 even gaining a purple heart.
A duck (The devil duck)
What does P.A.S.S stand for?
Pull
Aim
Squeeze
Sweep
out of the three who has more heat content
natural gas
Propane
Butane
Butane 3200 Btu/ft3
Maximum allowable level of undiluted CO in the flue gas?
400 PPM (parts per million)
This is the part of the Circulating pump that moves the steam.
Impeller
How did the U.S.S Texas reach the shores with its cannons when it was too far away
by sinking half the ship
What is the maximum recommended indoor CO level?
9 ppm (parts per million)
What must be changed when convert NG to LP
Spuds
This tool is used to measure multiply things in the flue pipe and can help determine efficiency as well as any possible problems.
Combustion Analyzer
Flame sensors are measured in what when checking them?
micro-amps DC
Who invited HVAC in 1902
Willis Carrier