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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