Description

• Projects in this scope area may include installing ductwork components for HVAC systems and fume/smoke/grease exhaust systems, including ceiling and wall hangers, and air sealing of ductwork and penetrations. Penetrations through fire rated walls and ceiling shall be sealed to maintain the fire integrity of the structure. 
• All ductwork shall comply with most current applicable SMACNA standards, ASHRAE standards and NYC Codes.  
• The full, detailed scope of work for this project including any additional work areas will be updated here after alignment with project stakeholders through scoping and design activities. 

Baseline

• Drawing must provide a table listing all rooms which are part of HVAC Systems scope, minimum ventilation requirements per NYC Mechanical Code section 403, Table 403.3.1.1 and design air quantity showing compliance with the air quantity requirements to meet the code. 
• Install all systems and associated ductwork per the manufacturer’s recommendations. 
• Size ducts per ASHRAE recommendations. 
• Include a statement in drawings specifying that duct leakage testing shall be performed at either rough-in or post-construction, and the leakage shall be as prescribed by regulating Codes. [COMPMOD] 
• New or replacement heating and cooling equipment must meet or exceed the minimum efficiency rating required to meet NYC Energy Conservations Code (ECC). 
• Duct systems insulation in alterations must satisfy the minimum R-values in the applicable section of the ECC code, depending on the location of the ducts. [COMPMOD] 
• For heating/cooling systems pipes carrying fluids, drawings must specify the pipe insulation thickness per applicable Code tables. Piping insulation R-values must conform to Code prescriptions. [COMPMOD] 
• Provide comprehensive sealing, cleaning, and repair to existing mechanical ventilation systems. [COMPMOD] [PACT] 

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Last Updated on October 21, 2024 at 1:50 pm

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Specifications

07 84 13 - Penetration Firestopping

23 05 00 - Common Work Results for HVAC

23 05 23 - General Duty Valves for HVAC Piping

23 05 29 - Hangers and Supports for HVAC Piping and Equipment

23 05 53 - Identification for HVAC Piping and Equipment

23 07 00 - HVAC Insulation

23 09 23 - Control Dampers

23 31 13 - Metal Ducts

23 33 00 - Air Duct Accessories