Hydronic Heating Systems

Question 1

A Hydronic heating system is operated by heating water to ________ at boiler

Answer 1

Preset temperature

Question 2

A Hydronic heating system works by passing water through terminal devices/_______ which transfer heat to the air

Answer 2

Convectors

Question 3

System Components
1. _______ May simply be a hot water tank in some applications

2. ______ To operate boiler and control water flow
3. ______ To allow for expansion that takes place when water is heated
4. ______ Copper, Steel, Cast iron, plastic (PEX)
5. ______ To circulate the water
6. ______ Variety of types

Answer 3

1. Boiler
2. Controls and valves
3. Expansion Tank
4. Piping
5. Pump
6. Terminal devices

Question 4

Series loops

Answer 4

Common in smaller buildings and residential

And simple and inexpensive to install

No individual terminal control

Question 5

One pipe

Answer 5

Used for supply and return

Individual convectors controlled using T valves

Can be zoned and upped or downfed

Question 6

Two pipe direct return

Answer 6

One pipe for supply and another for return

Return water flows opposite direction to the supply

Requires less piping than reverse return but difficult to balance

Question 7

Two pipe reverse return

Answer 7

One pipe for supply and another for return

Return water flows the same direction as the supply

Requires more piping than direct return but easier to balance

Question 8

Three and four pipe systems

Answer 8

Used in large buildings where both heating and cooling use hydronics

Question 9

Radiant in-floor hydronic systems

Answer 9

Pipes laid out in a coil or grid pattern

Water circulated there pipes and warms the surface in contact

Surfaces then warms space by radiation