If the water level falls too low during operation of a steam heating boiler the operator should

If the water level falls too low during operation of a steam heating boiler the operator should

a) tell his or her supervisor
b) add more water immediately
c) operate the safety valve
d) shut the boiler down
e) lower the flame and add water to bring it up to a safe level





Answer: D

The piping and heating units of a steam heating system must be so arranged that

The piping and heating units of a steam heating system must be so arranged that

a) the condensate can flow freely to the heating units
b) the air can be kept at the top of the heating units
c) steam can flow freely to all heating units
d) all of the above
e) none of the above





Answer: C

The two pipe gravity return steam heating system, now obsolete, had the disadvantage that during startup, some steam could pass through a radiator without condensing and could enter other radiators via the return main, thus trapping:

The two pipe gravity return steam heating system, now obsolete, had the disadvantage that during startup, some steam could pass through a radiator without condensing and could enter other radiators via the return main, thus trapping:

a. Water in the center
b. Steam in the center
c. Condensate in the center
d. Debris in the center
e. Air in the center





Answer: E

The ______________ system overcomes the difficulty of returning condensate back to the boiler due to inefficient static head.

The ______________ system overcomes the difficulty of returning condensate back to the boiler due to inefficient static head.

a. One pipe, gravity return system
b. Two pipe, gravity return system
c. One pipe, steam trap system
d. Two pipe, return trap system
e. Two pipe, steam riser system






Answer: D

Slow or insufficient heat in one or more rooms in a steam, heated building can be caused by a faulty:

Slow or insufficient heat in one or more rooms in a steam, heated building can be caused by a faulty:

a. Steam trap
b. Condensate tank float switch
c. Heater
d. Return trap
e. Boiler limit control





Answer: A

In the two, pipe variable vacuum steam heating system, the steam temperature can be varied from:

In the two, pipe variable vacuum steam heating system, the steam temperature can be varied from:

a. 200°C to as low as 100°C
b. 150°C to as low as 100°C
c. 150°C to as low as 55°C
d. 105°C to as low as 55°C
e. 105°C to as low as 45°C






Answer: D