In a gravity return system, the boiler should be placed
well below the lowest radiator
well below the highest radiator
at the same level as the radiators
The pressure balancing device that prevents the boiler pressure from forcing he water in the boiler into the return line is called a
Hartford loop
Pressure equalizer
Pressure control valve
When starting up a steam heating boiler it should be filled to:
1/2 of a gage glass
1/4 of a gage glass
3/4 of a gage glass
If the water level falls too low during operation of a steam heating boiler the operator should
shut the boiler down
add more water immediately
lower the flame and add water to bring it up to a safe level
The Hartford Loop prevents the water in the boiler from
dropping below a safe level
contamination by impurities in the returning condensate
exceeding the highest safe level
This steam piping arrangement was also one of the first heating system to be developed.
one-pipe gravity return system
two-pipe gravity steam system with steam traps
Slow or insufficient heat throughout a building heated by steam can be caused by:
too low a firing rate
air leaks
oversized piping
The piping and heating units of a steam heating system must be so arranged that:
steam can flow freely to all heating units
the condensate can flow freely to the heating units
the air can be kept at the top of the heating units
Which of the following would you expect to find in a steam heating system?
1. convectors 2. return traps 3. condensate tank 4. cushion tank
A) 1, 2, 3 B)2, 3, 4 C)1, 2, 4 D)1, 3, 4 E) 1, 2, 3, 4
A
B
C
D
E
Identify from the following list, which systems are a piping arrangements for steam heating systems.
1. Hartford Loop
2. Two-pipe with variable vacuum system
3. One-pipe gravity system
4. Two-pipe return trap system
A) 1, 2, 3, 4 B) 1, 2, 3 C) 2, 3, 4 D) 1, 3, 4 E) 1, 2, 4
Slow or insufficient heat in one or more rooms in a steam heated building can be caused by a:
faulty steam trap
faulty float switch
faulty heater
