There are 4 different classifications of forced hot water heating systems. Which of the systems below would have the disadvantage of unequal circuit lengths?
When the discussion of pump sizing is had, there are several terms that you must be familiar with. Which of the terms below would best be described as "formation of vapour bubbles within a liquid at low-pressure."?
There are a wide variety of terms that are associated with boilers. Which of the answers below would give accurate indication of vacuum or pressure in inches of water column?
In any Heating or cooling system, various valves are used. Which of the valves below would best be used when closing a high pressure line?
When sizing any heating system, several factors are taken into account. Which of the answers below correctly identifies the water weight for a flow rate of 1 US gpm?
There are a wide variety of terms that are associated with boilers. Which of the terms below is best defined as "The measured amount of fuel that an appliance will burn, stated in kW."?
Heating boilers have three common ratings. Which of the answers below would best be described as "An allowance for losses within the heating system."?
There are a wide variety of terms that are associated with boilers. Which of the terms below is best defined as "Removes air from the hot water supply to a cushion tank."?
Tempered water must be supplied to the boiler on a consonant basis. Which of the valves below would best fulfil this requirement?
The performance of a low pressure boiler is rated in Btu/hr or EDR. Which of the answers below would be equal to the evaporation of 34.5 ponds of water per hour?
Valves are an important piece of a hot water heating system. Which of the types of valves below would best be used to compensate for different temperatures needed in different zones?
A tube bender has several parts that the user needs to be familiar with. Which of the answers below is best described as "The bender part that aligns the degrees of a bend to a measured mark."?
There are a wide variety of terms that are associated with boilers. Which of the terms below is best defined as "Two metals of different coefficients of expansion welded together so that it bends on heating."?
There are a wide variety of terms that are associated with boilers. Which of the terms below is best defined as "The boiler most commonly in industry for hot water heating."?
There are various controls for the safe operation of any boiler. Which of the controls below would maintain a safe working temperature in a boiler?
There are four standard types of hot water heating systems. Which of the answers below would also be described as a "direct return system"?
When the discussion of pump sizing is had, there are several terms that you must be familiar with. Which of the terms below would best be described as "The pressure that a liquid produces when it turns to a gas a specific temperature."?
There are a wide variety of terms that are associated with boilers. Which of the terms below is best defined as "Containing excess air and products of combustion."?
Understanding the way certain boilers operate and the limitations of those boilers is key. Which of the boiler types below would have the liquid in the shell of the exchanger?
There are a wide variety of terms that are associated with boilers. Which of the terms below is best defined as "The delivery of fuel to a burner expressed as units of heat."?
Air can be trapped in a hot water heating system. Which of the air elimination devices below would make use of a dip tube?
There are four standard types of hot water heating systems. Which of the answers below would also be described as a "reverse return system"?
A 3-way valve can control fin coils or coils. Which of the items below usually operates this valve is this arrangement?
There are four standard types of hot water heating systems. Which of the answers below would also be described as a "perimeter loop system"?
There are a wide variety of terms that are associated with boilers. Which of the terms below is best defined as "A tank that is open to atmosphere that helps maintain system pressures stable."?
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