Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
20 Cards in this Set
- Front
- Back
The type of filter that can be reused and regenerated using an oil based substance is ?
|
Viscous impingement type
|
|
Which of the following are air washers designed to do ?
|
Humidify, dehumidify and cleanse the air
|
|
The most common type of fan or blower used on a furnace or RTU is the ?
|
Squirrel cage fan
|
|
The type of air conditioning equipment that requires the most service is the
|
RTU- Unitary
|
|
Downstream of a dual duct mechanical room, each air conditioned room or area is required to have a < Blank> installed.
|
Mixing box
|
|
The type of ducting designed for high velocity ducting is a ?
|
Round duct
|
|
An essential item required on a steam heating coil with an automatic control valve is a ?
|
Vacuum breaker
|
|
The type of coil design that is used when air temperature across a coil is greater than 35 F and 55F is ?
|
Installed two deep
|
|
Cooling towers are interconnected to ?
|
Condensers
|
|
The most common energy source for a heat pump is
|
Air source
|
|
The type of ducting designed for high velocity ducting is a ?
|
Round duct
|
|
An essential item required on a steam heating coil with an automatic control valve is a ?
|
Vacuum breaker
|
|
The type of coil design that is used when air temperature across a coil is greater than 35 F and 55F is ?
|
Installed two deep
|
|
Cooling towers are interconnected to ?
|
Condensers
|
|
The most common energy source for a heat pump is
|
Air source
|
|
A variable heat pump system will have ?
|
Two metering valves
|
|
The fixed heat pump system will control the heat/cool cycle by the use of ?
|
Motorized dampers
|
|
Icing of the evaporator is caused by?
|
Low refrigerant pressure in the evaporator
|
|
The receiver on a refrigeration system is located ?
|
Upstream of the filter/dryer
|
|
The safety valve from a receiver should be piped ?
|
Away from the air intakes
|