Line B Hydronic Systems Flashcards
What is the primary concern with ICI hydronic system design?
Protection of the equipment
What are two major concerns for the boiler in an ICI hydronic system installation?
Thermal shock and condensing combustion products
What is the typical system design temperature difference for a non-condensing ICI boiler?
20°F
What is the standard system design temperatures for a non-condensing ICI hydronic boiler?
180°F supply, 160°F return
What type of boiler is best suited to handle the thermal shock?
Flex tube
What minimum return water temperature must be maintained to avoid condensing of combustion products?
140°F
On an ICI hydronic heating system, what is the best location to install an air separator?
Immediately after the boiler supply outlet.
Why is it recommended to install the boiler outlet, air separator and expansion tank on the suction side of the system circulator pump?
To decrease air entry into the system piping and prevent imposing system head on the boiler supply.
Where is it recommended the system feed water be connected?
Into the air vent piping on the air separator
What is the purpose of a hydraulic de-coupler?
To isolate the source pump(s) from the load pump(s)
