A ___ can save energy because it can precisely control a fan’s motor speed so that the fan volume more efficiently matches the boiler air flow requirements.
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A probe-type low water fuel cutoff uses ___ to complete a bu…
A probe-type low water fuel cutoff uses ___ to complete a burner control circuit.
Water cannot be used as a secondary refrigerant in any appli…
Water cannot be used as a secondary refrigerant in any application where the temperature is below ___°F.
An automatic makeup water feeder is equipped with a ___.
An automatic makeup water feeder is equipped with a ___.
A ___ is used to prevent a dangerous vacuum from forming in…
A ___ is used to prevent a dangerous vacuum from forming in a boiler when it is taken out of service.
Steam traps remove air and ___ from steam lines and heating…
Steam traps remove air and ___ from steam lines and heating units.
A ___ is used to prevent a dangerous vacuum from forming in…
A ___ is used to prevent a dangerous vacuum from forming in a boiler when it is taken out of service.
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.