How to Inspect HVAC Systems Flashcards
There may be at least _____ heat exchangers inside a high-efficiency furnace.
Two
_____ is considered a heat-conveying medium.
Steam
A(n) _______ burner uses an electrical pump and a nozzle that turns the oil from a liquid to a spray of fine droplets.
Atomizing
A home inspector will typically find the ______-port burners installed in a furnace with a forced-draft, as they are common with high-efficiency furnaces.
Mono
The older gas furnaces have a(n) ______-pilot light that is always burning.
Standing
The minimum efficiency rating for furnaces is ___________.
78%
A common gas piping material is black _____.
ABS
Forced-air furnaces function using primarily ________.
Convection
Condensate lines or sweating suction lines can ______ onto building materials.
leak
___________ can be used to check for wood rot and damage caused by a leak from a condensing unit.
A screwdriver, awl or probe
A home that has a fuel-fired heating system requires _________________.
venting of its combustion gases and byproducts to the outside
Heating, ventilation and air conditioning are each used in an attempt to __________________.
control the environment within an enclosure
Heat moves from the ________ body, and the ________ body absorbs it.
warmer, colder
The ___________ of the heating system can be cited to distinguish one heating system from another.
efficiency and capacity
If you are inspecting a _______ duct system, you should find a large rectangular duct that comes directly out of the heating system and runs in a straight line down the center of the basement, attic or ceiling.
plenum
Round or square supply ducts that are connected to and branch off the extended duct are called _________.
Side Takeoffs
A mid-efficiency gas furnace’s pilot light ____________.
is shut off when the furnace is not in operation
A thermocouple is used in gas furnaces that have a(n) _____________.
standing-pilot light
In a typical residential air-conditioning system, the __________ absorbs the heat energy from the air passing through it, and transfers the heat energy from the passing air to the refrigerant moving inside it.
evaporator
