Chapter 14 Hot Water Heating Systems

Question 1

The water temperature in a commercial application forced circulation system may be as high as ______.

a) 94 C (201 F)
b) 75 C (167 F)
c) 250 C (482 F)
d) 100 C (212 F)

Answer 1

b) 75 C (167 F)

Question 2

Compared to a steam heating system, which of the following is not an advantage of a hot water heating system?

a) The water temperature can be varied more readily in relation to the ambient temperature.
b) Maintenance costs are higher as traps are required and there is more corrosion in the piping.
c) Hot water boilers are smaller and more compact.
d) The piping slope is not as critical as proper condensate drainage is not as important.

Answer 2

b) Maintenance costs are higher as traps are required and there is more corrosion in the piping.

Question 3

The heating coils in a snow melting system should be embedded at least _____ below the concrete surface.

a) 2 cm (0.8 in)
b) 10 cm (4 in)
c) 7.5 cm (3 in)
d) 5 cm (2 in)

Answer 3

d) 5 cm (2 in)