NAVFAC Design-Build Model Request for Proposal - Entry Control Facility

D30 HVAC

SYSTEMS REQUIREMENTS
HVAC TEMPLATE 09/22

Instructions for using this template: There are template files for each UNIFORMAT Level 2 Group Elements. This template is for Group Element D30-HVAC. Text such as this is hidden text that will not print when the hidden text box in "Print/Options" is un-checked.

The Mechanical Team Member is the person responsible for editing and developing the Mechanical content of this RFP.

The Mechanical Team Member must edit this template for the requirements of the project. The SYSTEMS REQUIREMENTS are intended to define items that are required throughout the facility or on a system wide basis that is common to several rooms. Room-specific requirements are defined in the ROOM REQUIREMENTS section. Coordinate with the lead programmer for ROOM REQUIREMENTS. Editing is required where brackets [ ] appear. Delete all building elements that are not required for the project. If additional elements or sub-elements are required for the project that do not appear in the template, refer to the NIST UNIFORMAT II publication for additional building element numbers and descriptions. The Uniformat II Work Breakdown Structure can be found at www.wbdg.org/ndbm/. Coordinate with the PERFORMANCE SPECIFICATION SECTION D30 to ensure that performance requirements are provided for all of the Building Elements listed here and that paragraph numbering matches.

The Mechanical Team Member must coordinate with the Government PM/DM in editing the Design Build RFP Technical Evaluation Factor: Energy Design Reduction of the STANDARD NON-COST/PRICE EVALUATION FACTORS to align with the requirements of the HVAC portion of this RFP Section.

NOTE: Consider each HVAC component relative to Part 2 UFGS Section 01 33 29, Sustainability Requirements and Reporting and UFC 1-200-02, High Performance and Sustainable Building Requirements.

Refer to Part 4 Section D30 for performance requirements of the building elements included in the HVAC system.

SYSTEM DESCRIPTION

NOTE: Edit the following for the specific project requirements.  Remember to let the design build A/E design the project.  Keep the requirements general wherever possible while assuring the RFP is biddable.  Check against the real property requirements such as in the DD1391 to capture systems.  If there are any discrepancies between the requirements document and this RFP then inform the government PM/DM.  Do not repeat technical or performance requirements in the RFP.  Check PTS Section D30 for similar requirements and mitigate if found.

UFC 1-200-02 HIGH PERFORMANCE AND SUSTAINABLE BUILDING REQUIREMENTS paragraph 2-3 OPTIMIZE ENERGY PERFORMANCE selection process for HVAC type(s) must be performed, by the Mechanical Team Member, and approved before RFP release.  This includes the evaluation of alternate HVAC systems for a best value determination.  Specify the system(s), as determined by best value, in this RFP to be provided by the design build contractor.  Include a Government Baseline Building Energy Report in Part 6 of this RFP.  It must contain ASHRAE 90.1 baseline model inputs and model outputs.  This includes but is not limited to schedules for occupancy, envelope, mechanical, and electrical building systems.  An informative guide is included in this DB RFP template under Part six to assist in developing the report.  Coordinate with PTS D30 and the Design Build RFP Technical Evaluation Factor: Energy Design Reduction of the STANDARD NON-COST/PRICE EVALUATION FACTORS
 
Select mechanical system based on base/activity requirements and ensure system is life cycle cost effective relative to other systems studied.  RFP editor must partner with the Facilities Engineering Command (FEC) and the Public Works Department (PWD) on life cycle suitability of mechanical systems, along with system Operational, Maintenance, and Support Information (OMSI) requirements.  Consider mechanical systems common to the Public Works Department in an effort to reduce associated maintenance costs.  Select mechanical systems in accordance with UFC 1-200-02 High Performance and Sustainable Building Requirements and UFC 3-401-01 Mechanical Engineering and related UFCs.  Consider HVAC strategies for the purpose of maximum energy savings (e.g., VFD's. VAV's, Supply Air Temperature Reset, Demand Controlled Ventilation).

This Model RFP has a general requirements paragraph to capture complete and compliant systems, and examples for three system types that supplement the general paragraph for specific instances that are required to support the HVAC LCCA best value selections and the Public Works Department.  Modify and or replace these examples for the specific requirements of your project.  Modify and/or add technical requirements to Parts 3 and 4 as appropriate.  Do not repeat UFC and/or UFGS technical requirements but do provide product and function selections as needed.  Delete systems and components in the ESR text that are not used.

NOTE:  Explicitly require DOAS(s) when required by UFC 3-410-01 Heating, Ventilating, and Air Conditioning Systems.  Do not explicitly exclude DOAS(s) in any case.

Provide complete and usable heating, ventilating and air conditioning (HVAC) systems that attains the following objectives: Occupant comfort, Indoor air quality, Acceptable noise levels, Energy efficiency, Reliable operation, and Ease of maintenance.  Design and install in accordance with UFC 3-401-01 Mechanical Engineering and related UFCs.  These UFCs incorporate provisions of the International Code Council's International Mechanical Code (IMC) and ASHRAE design guidance with supplemental requirements.  Provide BACnet Direct Digital Control for all HVAC system controls.  [Refer to Building Requirements, Space Tabulations Section of the Project Program for building occupancy levels.]

[Provide HVAC system for [Building X] with 2-pipe fan coil indoor units, air-cooled chillers, [central steam] [propane] [natural gas] [oil] fired boilers, and dedicated outdoor air system (DOAS) with full exhaust-air heat recovery.  Provide automatic and manual changeover capability for chillers and boilers.  Provide indoor units in each room with temperature control.  Deliver outside air at the required conditions from the DOAS to the inlet of the fan coil units.  DOAS must be a factory-packaged unit that delivers the required conditioned air over the full range of load when the heat recovery either is or is not operating.]

[Provide HVAC system for [Building X and Y] with single duct Variable Air Volume (VAV) hot water reheat series fan powered indoor units, continuous cooling primary air handler units, water-cooled chillers, closed circuit cooling towers and [central steam] [propane] [natural gas] [oil] fired boilers.  Provide indoor units in each room with temperature control.  Primary air handler units must have automatic modulating outdoor air intake control with occupancy sensing in each room.]

[Provide HVAC system for [Building X] with water source heat pumps, [ground-coupled] water loop, closed-circuit cooler, supplemental [central steam] [propane] [natural gas] [oil] fired boilers, and water source dedicated outdoor air system with hot gas reheat and full exhaust-air heat recovery.  Deliver the conditioned outside air at a neutral temperature from the DOAS to the occupied spaces.  DOAS must be a factory-packaged unit that delivers the required conditioned air over the full range of load when the air heat recovery either is or is not operating.

NOTE: Revise the following as required to identify system choices that should not be used for this facility.  Consider deleting the prohibition on direct expansion VAV systems for applications in the 5,000 to 10,000 square foot (464.5 to 929 square meter) range.  Consider deleting the prohibition on thru-the-wall units in BEQ's, and isolated offices.  Use of thru-the-wall units (e.g., GE Zoneline) is generally required in Navy Lodges.  Economizers are not allowed in humid areas; only provide economizers when recommended by ASHRAE guidelines and standards for the project's weather zones.
 

[Economizer cycles are not allowed.]

GENERAL SYSTEM REQUIREMENTS

Provide working space around all equipment.  Provide all required fittings, connections and accessories required for a complete and usable system.  Install all equipment in accordance with the criteria in PTS Section D30 and the manufacturer's recommendations.  Where the word "should" is used in manufacturer’s instructions, substitute the word "must".

NOTE: Refer to UFC 3-410-01 for guidance on selection of design conditions, HVAC requirements for specific facility types, and identification of facility types not eligible for air conditioning.
 

Provide air conditioning and heating for spaces as indicated and for the following Design conditions:

Outside Conditions

Summer	[   ]	Degrees F dry bulb	Winter	[   ]	Degrees F
	[   ]	Degrees C dry bulb		[  ]	Degrees C
	[  ]	Degrees F wet bulb
	[   ]	Degrees C wet bulb

Inside Conditions

Summer	75	Degrees F dry bulb	Winter	68	Degrees F
	23.8	Degrees C dry bulb		20	Degrees C
	50	Percent RH

[Special Areas] Inside Conditions

Summer	[  ]	Degrees F dry bulb	Winter	[  ]	Degrees F
	[  ]	Degrees C dry bulb		[  ]	Degrees C
	[  ]	Percent RH

Heating & Ventilating Inside Conditions

Summer	[  ]	Degrees F dry bulb	Winter	[  ]	Degrees F
	[  ]	Degrees C dry bulb		[  ]	Degrees C
	[  ]	[Air changes per hour]

Provide Ventilation rates and systems in accordance with ASHRAE Standard 62.1, Ventilation for Acceptable Indoor Air Quality.

NOTE: Provide ventilation in accordance with UFC 3-401-01. Consider providing demand controlled ventilation via CO2 sensors where applicable such as Dining Facilities, Multi-purpose rooms, or other areas of highly diverse occupancies.

[Provide ventilation for [ ].]

[Configure the HVAC system to provide each zone with the choice of heating or cooling year round unless otherwise indicated.]  [Provide each zone with its own limited range of control, as allowed by the control system central workstation.]

NOTE: Where necessary, detail zoning requirements.  Coordinate with the project architect for functional requirements of the facility spaces.  Clearly indicate which zones are to be heated and ventilated only vs. heated and cooled.  Also indicate which spaces can be grouped into zones.

[Zone the HVAC system as follows:

[ ] must be a separate zone.
[ ] must be a separate zone, heated and ventilated only.
[ ] must be a separate zone, ventilated only.]

Provide minimum 4-inch (100 mm) thick concrete housekeeping pads and vibration isolators under all floor-mounted equipment.

[For sea coast applications, provide factory painted finishes that are designed for 3000 hour duration test for outside equipment and for equipment bringing in outside air.]

NOTE: Require all HVAC cooling/heating and condenser coils be provided with protective coatings when locations are within 5 miles of the ocean or exposed to corrosive environments.

[Provide all mechanical equipment HVAC [cooling/heating] [and] [condenser] coils with a manufacturer approved coating system. The heat transfer rating must be as installed.]

For unoccupied mode, provide the following night setback temperatures:

For winter, 10 degrees F (6 degrees C) lower than indoor heating design conditions, but no lower than 55 degrees F (12.8 degrees C).

For summer, 5 degrees F (3 degrees C) higher than indoor cooling design conditions, but no higher than 85 degrees F (29.4 degrees C).