Construction Review

No. 1

| NGHS Braselton MOB Core and Shell | P221103.0100

Rooftop Unit (RTU) Product Data

Author
Tony Martin
Date Reviewed
5/12/2022
Remark
Reviewed with Comments
Submittal
237413-1.1_PD
Type
Equipment Submittal
Issues 5
CR-1-1 Open Low

(Page 14 of 25) - Recommend not using demand controlled ventilation in a medical building where OA quantities are driven off codes that go beyond ASHRAE 62.1.
Note this can easily be disabled in the field but there may be some cost savings in not purchasing the CO2 sensors and not programming the feature.

Assigned To
Mechanical Contractor
Asset
Rooftop Unit
Discipline
Mechanical
Due Date
5/26/2022
Created By
Tony Martin
Identified On
5/12/2022 2:28 PM
CR-1-2 Open High

Please confirm OA intake will be at least 36" above the roof. This was already noted by the EOR but a response was not found.

Assigned To
Mechanical Contractor
Asset
Rooftop Unit
Discipline
Mechanical
Created By
Tony Martin
Identified On
5/12/2022 2:30 PM
CR-1-3 Open Low

Please provide fan curves showing performance of a single fan running as well as with both fans running. Typical RTU-1 and RTU-2.

Assigned To
Mechanical Contractor
Asset
Rooftop Unit
Discipline
Mechanical
Created By
Tony Martin
Identified On
5/12/2022 2:32 PM
CR-1-4 Open Moderate

Please confirm each fan will be provided with a back draft damper to allow the unit to continue to run if one fan goes down without short cycling.

Assigned To
Mechanical Contractor
Asset
Rooftop Unit
Discipline
Mechanical
Created By
Tony Martin
Identified On
5/12/2022 2:33 PM
CR-1-5 Open Moderate

Please confirm the modulation capabilities of the compressors. Are the compressors variable speed for load modulation? What is the expected turn down ratio?

Assigned To
Mechanical Contractor
Asset
Rooftop Unit
Discipline
Mechanical
Due Date
5/12/2022
Created By
Tony Martin
Identified On
5/12/2022 2:35 PM