A three-pipe (heat-recovery) VRF/VRV system, compared with two-pipe, allows different indoor units on the same refrigerant system to (conceptual)?
Choices
- (A) All heat always
- (B) Simultaneously provide cooling in one zone and heating in another, subject to mfr’s operational envelope
- (C) Only domestic hot water
- (D) Open cooling tower 100% always
Correct answer: (B)
Simultaneously provide cooling in one zone and heating in another, subject to mfr’s operational envelope
Explanation
3-pipe HR VRF: heat recovery; charge limits+pipe length tables.