Baseline

• All new boilers must be specified with outdoor temperature setback control, hot-water temperature reset controls, modulating burner, boiler turndown and entering water temperature as prescribed by Code.
• Install all-new high-efficiency gas-fired condensing steam boilers, decentralized (per building) where feasible. [PACT]

Stretch

• As per NYCHA’s electrification goals, prioritize electric-fed boilers over gas-fired.
• Install gas-fired condensing domestic hot water boilers at each building using existing piping networks. [COMPMOD]
• Evaluate options for heating system upgrades including hydronic conversion from steam with gas-fired or electric boilers where applicable. [PACT]
• Install gas-fired condensing domestic hot water boilers at each building using existing piping networks. [COMPMOD]

Strategies

Optimize Performance, Operation & Maintenance of Buildings, Systems & Assets

CompModPACT

Last Updated on January 8, 2025 at 9:45 am

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Specifications

23 25 19 - Water Treatment for Steam System Feed Water

23 34 16 - Boiler Room Combustion Air Makeup And Ventilation System

23 52 39 - Firetube Boilers

23 53 13 - Boiler Feedwater Pumps

CPDDESIGN2015004 - Boiler Replacement_Existing Oil Tanks_151026

CPDDESIGN2015006 - Boiler Replacement_Chimney Testing

Description

• Radiators and convectors are room-heating devices that emit heat from pipes through which steam or circulating hot water including traps that allow for the passage of condensate and the collection of undesirable material.
• Projects in this scope area may include installing new hydronic and/or steam radiators, condensate traps, and supply line connections; and installing new sealing, plasterwork/drywall, and flooring. 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

• Updates to existing hydronic heating systems should include:
  • Low water content boiler with sealed combustion intake and flue.
  • VFDs on heating and hot water (HHW) pumps.
  • Hydraulic coupler on HHW pipe system.
  • Indirect-fired DHW with storage.
  • Outdoor reset boiler control.
  • Fuel oil tanks.
• Hot water boilers that supply heat to the building through one- or two-pipe heating systems must have controls as mandated by regulating Codes. [COMPMOD]

Stretch

• Replace steam radiators with high-efficiency hot water convectors. [SA]
• Convert to a hydronic heating system if the building is optimally located near high-pressure gas lines. [SA]
• Replace existing central boiler systems with Far Infrared Heating (FIR) panels and electric baseboard heaters. [SA]

Strategies

Optimize Performance, Operation & Maintenance of Buildings, Systems & Assets

CompModSustainability AgendaCommunity CentersCommercial Kitchens

Last Updated on June 27, 2024 at 2:32 pm

Description

• Projects in this scope area may include: installing new central heating plants, ground or air source heat pumps, or high-efficiency gas boilers; decoupling of space and water heating systems; installing circulating, condensing, and other pumps, or fan coils for heat exchange; replacing distribution piping, valves, and traps; and replacing and/or removing apartment radiators. 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

• Hot water boilers that supply heat to the building through one- or two-pipe heating systems must have controls as mandated by regulating Codes. [COMPMOD]

Stretch

• Install new high-efficiency gas-fired condensing boilers. [COMPMOD]
  • Provide a preliminary cost estimate for hydronic conversion for steam systems where applicable.
  • Provide a preliminary cost estimate for decentralizing where applicable.
  • For sites that have recent or ongoing boiler replacement work, as identified in each development’s Modernization Report, teams can additionally price a scenario assuming retaining these existing boilers and give an estimate for remaining repairs-in-kind to other components of the existing heating system (assuming items and quantities identified in the PNA). If this option is pursued, teams should identify a path to electrification including a timeline. Highlight in your narrative response all costs associated with repairs-in-kind as well as costs associated with electrification-ready infrastructure anticipating future electrification. Include Remaining Useful Life estimates for all items to be repaired in kind.
• Assume one programmable thermostat in each unit. [COMPMOD]

Strategies

Optimize Performance, Operation & Maintenance of Buildings, Systems & Assets

CompMod

Last Updated on June 5, 2024 at 9:45 am

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Specifications

23 34 16 - Boiler Room Combustion Air Makeup and Ventilation System

Description

• Projects in this scope area may include: installing new central heating plants, ground or air source heat pumps, or high-efficiency gas boilers; decoupling of space and water heating systems; installing circulating, condensing, and other pumps, or fan coils for heat exchange; replacing distribution piping, valves, and traps; and replacing and/or removing apartment radiators. 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

• New heating and cooling equipment must be sized using ACCA Manuals J and S or ASHRAE handbooks.
• Locate heat and DHW equipment above flood elevation.
• The drawings must include a statement indicating the total heating and cooling design loads have been determined as such. [COMPMOD]
• in a residential job application must be sized per ACCA Manual D. [COMPMOD]
• New or replacement heating and cooling equipment must meet or exceed the minimum efficiency rating required by Federal law. [COMPMOD]
• The equipment schedule on construction drawings must clearly list the equipment efficiency or performance rating along with the type, size, capacity, and fuel type of all equipment and any additional specifications pertaining to the energy use of the equipment. [COMPMOD]
• Systems serving multiple dwelling units must comply with the Commercial Buildings sections of the ECC in lieu of the Residential sections. [COMPMOD]
• Provide programmable thermostats should be provided to every residential unit. [COMPMOD] [PACT]
• Duct systems in alterations must satisfy the minimum R-values in the residential section of the NYCECC code, depending on the location of the ducts. [COMPMOD]
• A narrative must be provided of each mandatory control system describing its function and operation and specifying proper setpoints of equipment and controls. [COMPMOD]
• Present assumptions for lifecycle maintenance, service, & replacement for any proposed system. [PACT]

Stretch

• Decouple heating and domestic hot water systems. [SA]
• Protect mechanical, electrical, and plumbing infrastructure by building raised annex or creating protected zones within buildings by construction flood doors and barriers around mechanical rooms or elevating equipment above the design flood elevation. [FR]

Strategies

Optimize Performance, Operation & Maintenance of Buildings, Systems & Assets

CompModPACTSustainability AgendaFlood Resilience

Last Updated on June 5, 2024 at 9:58 am

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Specifications

23 05 00 - Common Work Results for HVAC

23 05 23 - General Duty Valves for HVAC Piping

23 05 29 - Hangars for HVAC Piping Equipment

23 05 53 - Identification for HVAC Piping and Equipment

23 05 93 - Testing, Adjusting and Balancing for HVAC

23 07 00 - HVAC Insulation

23 09 13 - Instrumentation and Control for HVAC

23 31 13 - Metal Ducts

23 37 23 - Roof Accessories

Details

S-DT_S-101_CONCRETE PAD DETAILS AND NOTES_NEW HVAC

Description

• Projects in this scope area may include installing new central heating plants, ground or air source heat pumps, or high-efficiency gas boilers; decoupling of space and water heating systems; installing circulating, condensing, and other pumps, or fan coils for heat exchange; replacing distribution piping, valves, and traps; and replacing and/or removing apartment radiators.

Strategies

Optimize Performance, Operation & Maintenance of Buildings, Systems & Assets

Prioritize Sustainable Materials, Technologies & Practices

Last Updated on June 5, 2024 at 10:01 am

Description

• A typical NYCHA development employs a large central steam plant to provide space heat and domestic hot water. These systems are inefficient and are difficult to control.
• Building Steam Piping & Steam Fan Coil Unit
  • Projects in this scope area may include installing new insulated steam piping and condensate return systems inside buildings, including new fan coils for heat exchange and piping for fan coils, communication lines, electrical conduits, and valves. 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.
• Underground Steam Piping & Condensate Return Piping
  • Projects in this scope area may include installing new insulated underground steam and condensate piping, communication lines, electrical conduits, and valves. 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

• Building Steam Piping
  • Hot water boilers that supply heat to the building through one- or two-pipe heating systems must have controls as mandated by regulating Codes. [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]

Stretch

• Building Steam Piping
  • Consider using existing steam risers for condensate drains.               
  • Convert central steam system to distributed condensing boilers and hydronic convectors.
  • Convert steam-to-DHW systems in each building to a gas-fired condensing boiler and storage tank.
  • Convert steam heating to hydronic with gas-fired or electric boilers. [PACT]
  • Submeter make-up water usage and connect to BMS to monitor both boiler make-up water, condensate tanks, and pumps to identify leaks and quickly repair them. [SA]
  • Recycle steam condensate in heating systems. [SA]
  • Convert hydronic loop heating and window Acs to VRF heat pumps. [SA]
• Underground Steam Piping & Condensate Return Piping
  • When abandoning existing piping at each building will be cut back and capped before the buildings. New piping installation shall be done before the existing steam system is disconnected and capped at each building.
  • Use existing penetrations and enlarge as required to accommodate new piping and anchoring system.
  • Related work for new underground piping includes landscape repair, asbestos abatement, soil sampling and testing in connection with subgrade and backfill earthwork, site protection work, surface repair, and road repair.
  • Route all new piping shall avoid critical tree root zones and avoid or minimize potential conflicts with existing buried utilities.

Strategies

Optimize Performance, Operation & Maintenance of Buildings, Systems & Assets

CompModPACTSustainability Agenda

Last Updated on June 5, 2024 at 9:26 am

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Specifications

23 09 24 - Steam Flow Meters

23 22 13 - Steam and Condensate Heating Piping

23 53 12 - Vacuum Condensate Pumps

23 82 39.16 - Propeller Unit Heaters