Chapter 3 Steam Heating Systems Flashcards
- The piping and heating units of a steam heating system must be so arranged that:
A. Steam can flow freely from all heating units
B. Steam can flow in insufficient quantities to all heating units
C. The condensate can be returned freely to these units
D. The condensate can flow freely from the boiler
E. The air can be expelled from the heating units and piping
E. The air can be expelled from the heating units and piping
- The piping and heating units of a steam heating system must be so arranged that:
A. Steam can flow freely from all heating units
B. Steam can flow in insufficient quantities to all heating units
C. The condensate can be returned freely to these units
D. The condensate can be returned freely to the boiler
E. The air can be contained in the heating units and piping
- The piping and heating units of a steam heating system must be so arranged that:
A. Steam can flow freely from all heating units
B. Steam can flow in insufficient quantities to all heating units
C. The condensate can be returned freely to these units
D. The condensate can flow freely from the boiler
E. The air can be expelled from the heating units and piping
E. The air can be expelled from the heating units and piping
- The piping and heating units of a steam heating system must be so arranged that:
A. Steam can flow freely from all heating units
B. Steam can flow in insufficient quantities to all heating units
C. The condensate can be returned freely to these units
D. The condensate can be returned freely to the boiler
E. The air can be contained in the heating units and piping
D. The condensate can be returned freely to the boiler
- The piping and heating units of a steam heating system must be so arranged that:
A. Steam can flow freely to all heating units
B. Steam can flow in insufficient quantities to all heating units
C. The condensate can be returned freely to these units
D. The condensate can flow freely from the boiler
E. The air can be contained in the heating units and piping
A. Steam can flow freely to all heating units
- In all systems, the horizontal steam supply pipes between boiler and heating units are called the:
A. Mains
B. Risers
C. Return lines
D. Steam lines
E. Steam pipes
A. Mains
- One of the causes of insufficient steam supply to the heating units can be attributed to:
A. Proper pitch unrestricted drainage
B. Air vents passing steam
C. Valves on mains wide open
D. Piping over sized restricting flow
E. Bypassing of steam to supply line
B. Air vents passing steam
- In a _____ system, the mains are located above the heating units.
A. Steam supply
B. Heating supply
C. Upfeed
D. Downfeed
E. Under floor
D. Downfeed
- One cause of insufficient steam supply to a steam heating units may be:
A. Proper pitch unrestricted drainage
B. Air vents passing air
C. Valves on mains wide open
D. Piping correct size unrestricted flow
E. Bypassing of steam to supply line
E. Bypassing of steam to supply line
- When the return main of a gravity return system is located below the level of the water line in the boiler, and therefore is always filled with water, it is called a _____ return.
A. Dry
B. Heating
C. Upfeed
D. Downfeed
E. Wet
E. Wet
- When the supply mains are located below the heating units they serve, and the steam is supplied upwards through the risers to the heating units, the system is called a/an _____ system.
A. Steam supply
B. Heating supply
C. Upfeed
D. Downfeed
E. Under floor
C. Upfeed
- Steam in a two-pipe, vacuum return system is supplied pressures up to:
A. 75 kPa (10 psi)
B. 50 kPa (7 psi)
C. 200 kPa (30 psi)
D. 103 kPa (15 psi)
E. 15 kPa (2 psi)
D. 103 kPa (15 psi)
- In a gravity return system, the boiler should be placed:
A. Well above the highest radiator
B. Well below the lowest radiator
C. On an elevated platform
D. At the same level as the radiators
E. As far as possible from the radiators
B. Well below the lowest radiator
- In all systems, the vertical pipes to the various floors are called the:
A. Mains
B. Risers
C. Return lines
D. Steam lines
E. Steam pipes
- Before a boiler can be fired it must first have a/an:
A. Visual internal waterside inspection
B. Welding inspection
C. Visual internal fireside inspection
D. Thorough cleaning
E. Current inspection certificate
E. Current inspection certificate
- When the return main is located above the water line, which is usually only partly filled with condensate and will drain dry when the flow of condensate ceases, is called a _____ return.
A. Dry
B. Heating
C. Upfeed
D. Downfeed
E. Wet
A. Dry
- One of the causes of insufficient steam supply to the heating units can be attributed to:
A. Improper pitch restricting drainage
B. Air vents passing air
C. Valves on mains wide open
D. Piping over sized restricting flow
E. Bypassing of steam to supply line
A. Improper pitch restricting drainage
- One of the causes of insufficient steam supply to the heating units can be attributed to:
A. Proper pitch unrestricted drainage
B. Air vents passing steam
C. Valves on mains wide open
D. Piping over sized restricting flow
E. Bypassing of steam to supply line
B. Air vents passing steam
- One of the causes of insufficient steam supply to the heating units can be attributed to:
A. Proper pitch unrestricted drainage
B. Air vents passing air
C. Valves on mains partly closed
D. Piping over sized restricting flow
E. Bypassing of steam to supply line
C. Valves on mains partly closed
- One of the causes of insufficient steam supply to the heating units can be attributed to:
A. Proper pitch unrestricted drainage
B. Air vents passing air
C. Valves on mains wide open
D. Piping over sized restricting flow
E. Bypassing of steam to return line
E. Bypassing of steam to return lin
- A leaking steam trap will allow steam to blow from the radiator into the:
A. Return lines
B. Steam mains
C. Steam risers
D. Atmosphere
E. Boiler
A. Return lines
- The Hartford loop prevents steam pressure from forcing boiler water back into the return line should the:
A. Boiler pressure get to high
B. Feedwater supply fail
C. Check valve fail to close
D. Water level get to high
E. Boiler temperature be to high
C. Check valve fail to close
