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Author Question: The difference between 80 efficiency furnaces and a 90 efficiency furnaces is that 90 efficiency ... (Read 155 times)

londonang

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on: Jul 26, 2018
The difference between 80 efficiency furnaces and a 90 efficiency furnaces is that 90 efficiency furnaces
 
  A) use more efficient air filters
  B) use more combustion air per 1000 Btu firing rate
  C) have an extra recuperative heat exchanger that condenses water out of the flue gas
  D) burn more gas to increase the heat exchanger temperatures

Question 2

Unbalanced seals have a _____ face loading than balanced seals.
 
  a. lower
  b. higher
  c. lighter
  d. more evenly distributed


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EAN94

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Reply #1 on: Jul 26, 2018
Answer to Question 1

C

Answer to Question 2

b


londonang

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Reply 2 on: Jul 26, 2018
Gracias!

duy1981999

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Reply 3 on: Yesterday
Excellent

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