Boilers Flashcards
What is the typical pressure for a pressure relief valve on a water boiler
30 psi
How close to the ground should be discharge for pressure relief out be?
18 inches
Should you manually test the water pressure, relief valve?
No
What are the four materials used in boiler construction?
Cast iron,
steel,
copper
Stainless Steel
List five normal operating controls for boilers
Pressure reducing valve
Primary control
Pump control
Zone control
Isolating valve
List six common problems found with expansion tanks?
Leaks,
waterlogged,
rust,
too small,
poor discharge location for open tank,
poor location for tank
List 6 problems found with pipes?
Rust,
leaks,
crimped,
too small,
poor support,
no insulation
List four problems found with radiant heating?
Leaks
Poor Balance
Bleed Valve Problems
Cool rooms or parts of rooms
what are three problems found with boiler heat exchangers?
Rust, Leaks, Clogs (Soot Buildup)
Are boilers open or closed systems?
closed systems
What is a typical or common setting for the high temperature switch?
200 to 220 degrees F
What’s the main difference between an open and closed system for a boiler?
An open system does not use a circulating pump and the expansion tank is above the highest radiator
What should the pressure relief valve be set at?
30 p s i
What are the important things to look for with radiator conductors and baseboards
Leaks,
rust,
too small,
missing,
poor location,
mixed types,
balancing valve problems,
bleed valve problems,
damaged baseboard thins,
obstructed air flow
What is a typical life expectancy for boilers based on material
Cast iron boilers commonly 35 to 50 years
Older steel boilers 20-35 years
Lighter steel and copper 15-25 years
