VAVs

Question 1

When is DCSV required?

Answer 1

When occupant density is less than or equal to 40 square feet per person.

Question 2

When is OCV required?

Answer 2

Office less than or equal to 250 sf., multipurpose rooms less than 1,000 sf, classrooms (other than K-12) conference rooms of any size.

Question 3

What are some exceptions for electric space heating?

Answer 3

1) When used to supplement heating when at least 60% energy requirement is solar.
2) When used to supplement a heat pump whose heating capacity is more than 75% of the design heating load.
3) Emergency backup to gas heating equipment.