HVAC 6022 - Steam Heating Systems (Chp 3)

Question 1

Finned convectors should be kept free of:

A) Corrosion
B) All of the above
C) Dust
D) Air
E) Paper

Answer 1

B) All of the above

Question 2

A _____ for a steam heating system will reduce the possibility of heating problems occurring when the system is in service.

A) High capacity boiler
B) Good preventative maintenance program
C) Thermostatic controller
D) Air/fuel controller
E) Heat monitor

Answer 2

B) Good preventative maintenance program

Question 3

All supply and drain lines of a steam heating system must be pitched to:

A) Allow for drainage of condensate
B) Prevent corrosion
C) Allow for temperature expansion
D) Allow collection of air at the highest points
E) All of the above

Answer 3

A) Allow for drainage of condensate

Question 4

The Hartford loop prevents the water in the boiler from:

A) Dropping below a safe level
B) Exceeding the maximum temperature
C) Contamination by impurities in the returning condensate
D) Exceeding the highest safe level
E) Flowing out through the steam main

Answer 4

A) Dropping ‘‘below a safe level’’

Question 5

In all steam heating systems, the horizontal steam supply pipes between the boiler and the heating units are called the:

A) Mains
B) Downcomers
C) Risers
D) Racks
E) Banks

Answer 5

A) Mains

Question 6

The first step in starting up a steam heating system is to:
Incorrect Response
A) Open the air vents
B) Check for a valid operating certificate from a provincial inspector
C) Clean up the area
D) Open the gas valves
E) Fill the boiler

Answer 6

B) Check for a valid operating certificate from a provincial inspector

Question 7

In the case of radiators and convectors, the main sources of trouble are:

A) Connecting rods
B) Valves and traps
C) Push nipples
D) Air vents
E) Air traps

Answer 7

B) Valves and traps

Question 8

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

A) Steam trap
B) Sight glass
C) Float switch
D) Vacuum switch
E) Heater

Answer 8

A) Steam trap

Question 9

Which one of the following steam heating systems can be used to overcome the difficulty of returning condensate back to the boiler due to inefficient static head?

A) Two pipe, gravity return system
B) One pipe, free flow return system
C) Two pipe, free drain return system
D) Two pipe, return trap system
E) One pipe, gravity return system

Answer 9

D) ‘‘Two pipe’’, ‘‘return trap’’ system

Question 10

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

A) Steam can flow freely to all heating units
B) The air can be kept at the top of the heating units
C) All of the above
D) None of the above
E) The condensate can flow freely to the heating units

Answer 10

A) Steam can ‘‘flow freely to all heating’’ units