STEAM/HYDRONICS

Question 1

the amount of heat released by a defined measurable amount of fuel during combustion process is a definition of:

Answer 1

Calorific value

Question 2

The impusle of heated gas to rise in a vertical passage as in a chimney, small enclosure or stairwell is a definition of

Answer 2

stack vent

Question 3

A device installed in the piping that opens a circuit if no flow is present is a definition of an

Answer 3

flow switch

Question 4

what is a example of a limit control

Answer 4

fan switch

Question 5

the energy to raise temperature without changing physical state is known as

Answer 5

sensible heat

Question 6

the energy required to change physical state without changing temperature is

Answer 6

latent heat

Question 7

transfer heat through liquid or gas is known as

Answer 7

convection

Question 8

Flue gas will condense when it is cooled to its dew point temperature. this condensate is considered to be

a, potable
b, nuetral
c, alkali
d, acidic

Answer 8

acidic

Question 9

What will be found on a heating boiler that is approved to the A.S.M.E standard?

Answer 9

H

Question 10

what device compensates for the normal expansion and contraction of the water in a hot water boiler

Answer 10

diaphragm tank

Question 11

what mandatory device is required by A.S.M.E n a low mas boiler over 400,000 btu

Answer 11

flow switch

Question 12

what can cause coil damage in a low mass boiler

Answer 12

scale build up in the heat exchanger

Question 13

where is the best location of a circulator

Answer 13

downstream from the compression tank

Question 14

what is the purpose of a flow control valve

Answer 14

to prevent the pump from deheading

Question 15

why is important to remove gases from hot water heating system

Answer 15

to prevent air binding in the system

Question 16

most gauges on a boiler have an accuracy of %

Answer 16

1 to 1.5 %

Question 17

purpose of a balancing valve

Answer 17

to adjust flow rates throughout the system

Question 18

what is the name of the piping system in which the first heat transfer unit supplied is also the first returned

Answer 18

two pipe direct return

Question 19

what causes convection currents

Answer 19

different air densities

Question 20

what method of a heat transfer is utilized by a plate heat exchanger

Answer 20

conduction

Question 21

What is the minimum amount of lightweight concrete required over the tubing when installing a radiant panel over wood surface

Answer 21

3/4

Question 22

Radiant tubing installed below wooden floors requires special components to aid in the lateral migration of hat. what are these components called

Answer 22

transfers plates

Question 23

what effect would raising a fin vector above recommended installation height have on the heat output

Answer 23

heat output would be reduced

Question 24

how does a forced air heating system heat a room or space

Answer 24

from the ceiling down to the floor

Question 25

what is the manufacture recommended length of pex tubing

Answer 25

300 ft

Question 26

radiant floor heating typically operates at water temperature

Answer 26

140 degrees f