060203a Hydronic Heating Systems

Question 1

These systems rely on the changing density of water as the temperature increases or decreases

No means for mechanical advantage to circulate water

Answer 1

Gravity system

Question 2

This system has a single pipe or main from the boiler outlet to the boiler return connection

Answer 2

One pipe system

Question 3

Is a forced hydronic system that uses one pipe or main to carry heated fluid from the boiler to the heat distribution unit, then a second pipe or main to carry the cooled fluid from the units back to the boiler.

Answer 3

Two pipe systems

Question 4

This two pipe system in which fluid from the heat distribution units is returned to the boiler by the shortest feasible path

Answer 4

Direct return system

Question 5

In this system there are often balancing issues where there the first supplied is first returned in the loop and not recommended in heat distribution units with high resistance

Answer 5

Direct return

Question 6

A two pipe system in which the heat distribution units are connected to the return main in the reverse order to which they are connected to the supply main this helps with balancing issues

Answer 6

Reverse return system

Question 7

This system is in which each heat transmission unit is part of the main, the first unit receives highest temperature water and second unit takes the lower temperature water and continues to the last unit before returning

Answer 7

Series loop baseboard system

Question 8

Typical temperature flowing through a in floor heat system

Answer 8

25-35 Celsius

Question 9

This loops is a piping connection between the supply and return piping that allows for continuous flow

Answer 9

Wild loop

Question 10

These valves are used to stop or reduce circulation to at each heat emission unit

Answer 10

Radiator/rad valves

Question 11

These valves allow for a set fluid temperature to enter a zone as required

Answer 11

Thermostatic mixing valves