Which of the following condenser requires freeze protection:

Which of the following is common boiler fuel for commercial buildings:

As the load on the system decreases, the regulating valve will _____ the flow of water until it reaches a point where the heat rejection rate of the condenser balances the system load

Most boilers used in HVAC applications are low-pressure boilers:

Increasing excess air by 10% may only impact boiler efficiency by about:

Condenser is a heat exchanger device which rejects heat from air or water to the refrigerant:

As the outdoor air temperature is reduced, Condenser pressure will be _______ :

Firetube boilers are available in sizes ranging from ______ BTU input:

In a Firetube boiler, hot gases of combustion flow through a series of tubes surrounded by water:

Variable speed drives are used for controlling the capacity of an air-cooled condenser:

Which of the following condenser requires minimum maintenance:

Operating water temperatures for hot water boilers are limited to ______ :

Non-condensing boilers typically operate in the range of ______ combustion efficiency

If the outdoor air is dry, the final water temperature that is leaving the cooling tower can be _____ to the ambient dry-bulb temperature.

As per ASME and pressure vessel codal requirements, Low-pressure boilers are limited to a maximum working pressure of _____ psig for steam: