Ch1 Flashcards
A hot water heating boiler is protected from over-pressure by means of a/an __________ valve.
Safety relief
The purpose of a steam-trap is to ___________.
Drain condensate
The purpose of a modulating control on a boiler is to _____________.
Shut down the boiler when maximum pressure is reached.
Humidification is fairly simple in buildings equipped with ____________ heating systems by placing a single humidifier in the plenum.
Hot water
The water gauge on a hot water heating system is placed.
On the boiler
The suction vavle of a centrifugal pump should not be partially- closed because:
The pump will burn up
For safety using of a ladder, the base of the ladder should be __________ away from the wall.
1/4 the length of the ladder
On high pressure boikers, the water column is used in order to;
Dampen the oscillation of the water in the gauge glass.
In the volute centrifugal pumps the velocity energy imparted on the fluidby the impellor is converted to pressure energy by_______.
The volute casing
