Is VRF allowed for use in patient rooms? Are the air supply outlets of indoor units also required to meet the MERV 14 filtration level?

[Vinny-wong]

Is VRF allowed for use in patient rooms? Are the air supply outlets of indoor units also required to meet the MERV 14 filtration level?

 

[SAK9]

As long as the unit delivers required air quantity at the appropriate filtration level it is immaterial whether the cooling comes from a chiller or aDx unit. The other thing you need to be mindful is that a refrigerant leak should not deplete oxygen level in the patient room so the main condensing unit sizing needs to take this into consideration

 

[Vinny-wong]

As long as the unit delivers required air quantity at the appropriate filtration level it is immaterial whether the cooling comes from a chiller or aDx unit. The other thing you need to be mindful is that a refrigerant leak should not deplete oxygen level in the patient room so the main condensing unit sizing needs to take this into consideration

Thank you. You are the first friend in the forum to reply to my question. I really didn't consider the issue of refrigerant leakage. Thanks for the reminder.

 

[HVAC-Novice]

You provided literally no information.

Applicable code? Type of facility? What refrigerant? what room size, load and so on.

Who is the designer? Maybe they can help?

Research the new flammable refrigerant requirements, consider ASHRAE 15 etc.

 

[SAK9]

A VRF ducted fan coil has only a limited static pressure. For a patient recovery room you are looking at two levels of filtration(G4+F7) depending on your local healthcare guidelines. So please check if the VRF FCU has sufficient static pressure to accommodate these filters.