?What is the function of a variable-speed setpoint circulator?
A. ?It protects a wood-fired or pellet-fired boiler from low inlet water temperature.
B. ?It protects a wood-fired or pellet-fired boiler against over-pressure conditions.
C. ?It senses when flue-gas condensation is occurring.
D. ?It allows automatic fuel dispensing into the boiler.
Answer: A
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a. dampers b. impellers c. spuds or spiders d. drums
The environmental impact of oil exploration, extraction, and transportation is mainly limited to accidents at drilling rigs, such as the 2010 explosion at an offshore platform in the Gulf of Mexico
Indicate whether the statement is true or false.
The last two letters of a lining edge code reads EF. This means ________
A) The lining meets SAE standards for durability B) The lining manufacturing code C) The lining has a higher coefficient of friction when cold than when hot D) The lining has a higher coefficient of friction when hot than when cold
What is the tap drill size for 3" pipe?
Fill in the blank(s) with the appropriate word(s).