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Title: During a planned maintenance call, technicians should check the power wiring to make sure: Post by: jihuygu on Feb 23, 2018 During a planned maintenance call, technicians should check the power wiring to make sure:
A) The unit is not grounded. B) Any resilient mounted motors are isolated from ground. C) The unit is grounded. D) A heavy wire runs from both L1 and L2 to the equipment ground. [Ques. 2] The different types of terminal units used for hot water heating systems include: A) Baseboard heaters, convectors, fan coil units, and radiators. B) One-pipe and two-pipe terminal units. C) Heating only, cooling only, and combination heating-cooling units. D) Series loop, parallel loop, and reverse return loop. [Ques. 3] Water and refrigerant flow through the coaxial coil: A) Together and are separated at the end by a separator tube. B) In the same direction. C) In opposite directions. D) At different times depending on the cycle. [Ques. 4] What is the purpose of excess combustion air? A) Excess air improves the over-fire draft. B) Excess air is added to increase the combustion temperature. C) Excess air is added to improve combustion efficiency. D) Excess air is added to ensure complete combustion. [Ques. 5] Which class of manufactured duct has the lowest flame spread and smoke developed ratings? A) Ductwork does not burn. B) Class 0 C) Class 1 D) Class 2 Title: During a planned maintenance call, technicians should check the power wiring to make sure: Post by: brandelyn on Feb 23, 2018 Content hidden
Title: During a planned maintenance call, technicians should check the power wiring to make sure: Post by: jihuygu on Feb 23, 2018 I can't even begin to explain how much your help meant to me.
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