3% seepage if the return air duct is located both inside and outside the conditioned space.
3% leakage if the return air duct is located inside or outside the conditioned space.
5% seepage if the return air duct is located outside the conditioned space.
10% leakage if the return air duct is located inside the conditioned space.
3% seepage if the return air duct is located outside the conditioned space.
When the compressor stops the valve automatically shuts off.
A spring exerting a downward force on the diaphragm tends to open the automatic expansion valve.
The spring force is counter acted by the evaporator pressure.
The automatic expansion valve maintains constant pressure in the evaporator during compressor operation regardless of the load.
The automatic expansion valve may be used with multiple cooling coils connected to the same compressor.
Very high pressure
An extremely high vacuum
High absorbent circulation
Very fast refrigerant flow
Very low temperatures
Shell and tube
Shell and coil
A stop valve
An oil separator
Dials on refrigeration pressure gauges do not indicate saturation temperature.
Permanently installed pressure gauges shall be constructed for at least 1.5 times the design pressure.
Smaller systems have no provisions for the installation of pressure gauges.
They indicate pressures and corresponding temperatures in a system.
Only one pressure gauge is normally installed on a system.
The formation of frost at the compressor inlet.
A high discharge condition.
A low oil pressure condition.
A low-pressure suction condition.
The formation of bubbles in the sight glass.
Is not an ozone-depleting substance.
Is explosive when mixed with air.
Is highly toxic.
Has a strong, pungent odour.
Open the main circuit breakers.
Operate the oil pump for at least ten (10) minutes before starting the compressor.
Open the stop valves in the chilled water system.
Check the refrigerant levels.
Open the makeup water valve.
Power type humidifier
Wetted element humidifier
Pan type humidifier
Steam grid humidifier
Liquid refrigerant carryover
High pressure refrigerant vapour
The eccentric rotor size
The counter flow arrangement because it is more efficient.
The parallel flow arrangement because it gives better protection against freezing.
The triple bypass flow arrangement.
One in which the cold air enters the coil where the coldest water is flowing.
The half serpentine.
A low pressure refrigerant
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