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A fresh air louver mounted on an exterior wall and equipped with a damper to allow to allow the required fresh air into the boiler room A should be closed B remain open at all times C should be open when
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A fresh air louver mounted on an exterior wall and equipped with a damper to allow to allow the required fresh air into the boiler room

A should be closed
B remain open at all times
C should be open when the boiler off
D should open and close automatically

User Hazel T
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7.7k points

1 Answer

5 votes

Answer:

DDDDDDDD

Step-by-step explanation:

I THINK...............

User Tammen
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