A steam trap is often included in a heat exchanger as a way to ensure that the condensate is clean and can be reused.

A ___ -pipe system completely separates heating and cooling supply and return lines.

___ systems are difficult to balance because the water that flows through the last heating unit must be pumped back through the whole piping system to the boiler.

A lithium bromide-water absorption chiller system is an absorption chiller system that uses water as the refrigerant and a solution of lithium bromide and water as the absorbent.

The disc and seat of a globe valve can be replaced without removing the valve body from its installed position.

A lithium bromide-water absorption chiller system is an absorption chiller system that uses water as the refrigerant and a solution of lithium bromide and water as the absorbent.

A(n) ___ burner is a small burner located near burner tubes that ignites the air-fuel mixture released into the burner.

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.

A probe-type low water fuel cutoff uses ___ to complete a burner control circuit.

A probe-type low water fuel cutoff uses ___ to complete a burner control circuit.