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Author Question: The formula for determining the static available for the duct system is: A) Available duct static ... (Read 153 times)

Lobcity

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on: Jul 24, 2018
The formula for determining the static available for the duct system is:
 
  A) Available duct static = total available static - total fixed static losses.
  B) Available duct static = total fixed static losses.
  C) Available duct static = 0.15 to 0.2 in WC.
  D) Total available duct static = 0.1 in WC.

Question 2

How is the water flow in a hydronic heating system checked?
 
  A) By measuring the impeller RPM using a stroboscope
  B) By measuring the pressure drop across the water pump and comparing it to a pumping performance chart
  C) By measuring the amp draw of the pump motor and applying the formula gp = amps  1.73
  D) By measuring the pump motor RPM using a digital tachometer


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emsimon14

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Reply #1 on: Jul 24, 2018
Answer to Question 1

A

Answer to Question 2

B


Lobcity

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Reply 2 on: Jul 24, 2018
Gracias!

xiaomengxian

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Reply 3 on: Yesterday
Wow, this really help

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