A ___ is used to prevent a dangerous vacuum from forming in a boiler when it is taken out of service.
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Common types of hot water system valves include diverter fit…
Common types of hot water system valves include diverter fittings, three-way valves, and centrifugal valves.
Steam traps remove air and ___ from steam lines and heating…
Steam traps remove air and ___ from steam lines and heating units.
A strainer should be installed before an RPZ backflow preven…
A strainer should be installed before an RPZ backflow preventer to remove any foreign matter that could cause the preventer to malfunction.
Common types of hot water system valves include diverter fit…
Common types of hot water system valves include diverter fittings, three-way valves, and centrifugal valves.
A typical steam heating system operates at temperatures abov…
A typical steam heating system operates at temperatures above ___°F.
Radiation has a major impact on all cooling systems.
Radiation has a major impact on all cooling systems.
___ heat is the ratio of the heat capacity of a substance to…
___ heat is the ratio of the heat capacity of a substance to the heat capacity of a standard substance at the same temperature.
A(n) ___ test is used to test the low water fuel cutoff.
A(n) ___ test is used to test the low water fuel cutoff.
A combination heating system uses all the components of a ho…
A combination heating system uses all the components of a hot water heating system and a steam heating system.