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Title: What type of vent is used with 80 percent Category I furnaces? Post by: michaelmorris17 on Feb 23, 2018 What type of vent is used with 80 percent Category I furnaces?
A) Type B double-wall gas vent B) 90 percent efficiency furnaces do not require a vent. C) PVC D) Single-wall stainless steel [Ques. 2] What is the RPM of a fan that uses a 4 in motor pulley, 8 in fan pulley, and a motor RPM of 1,750? A) 1,250 B) 875 C) 750 D) 500 [Ques. 3] In order to double fan RPM, the motor horsepower: A) Will not be affected by the fan RPM. B) Must also double. C) Must increase by a factor of 8 (2 2 2). D) Must increase by a factor of 4 (2 2). [Ques. 4] Which type of system reduces the total amount of refrigerant charge required? A) Multiplex B) Distributed C) Direct-expansion D) Secondary-loop [Ques. 5] The rack-type system is the most common configuration for which type of system? A) Distributed B) Secondary-loop C) Multiplex D) Direct-expansion Title: What type of vent is used with 80 percent Category I furnaces? Post by: pattiegalvez on Feb 23, 2018 Content hidden
Title: What type of vent is used with 80 percent Category I furnaces? Post by: michaelmorris17 on Feb 23, 2018 Ready for finals
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