Temperature | | | | | | | | | |
Reference | ASHRAE 55-2010 | ASHRAE 55-2010 | ASHRAE 55-2010 | ASHRAE 55-2010 | ASHRAE 0 ASHRAE 1.1 SMACNA | ASHRAE 0 ASHRAE 1.1 | | | |
Performance | 75±2°F cooling, 72±2°F heating, Allowance for unoccupied hour setup and setback optimized with re-occupancy pick-up and pull-down energy demands within a range of 55°F to 83°F,Thermal zones limited to 300 sf at the perimeter 15' and 1500 sf interior | Baseline features and add control or provide that surface temperatures are ±7°F of the air temperature,Thermal zones limited to 300 sf at the perimeter 15' (or no more than 1 private office) and 800 sf interior | ★ features and add control or provide that surface radiant temperatures are ±2°F of the air temperature, or inversely offset expanded air temperature ranges and do not form condensation. | ★★ and individual occupant controlled surface radiant temperatures and optimized air at 75-80°F cooling 65-72°F heating | Baseline: No ★: No ★★: Yes ★★★: Yes | Baseline: Yes ★: Yes ★★: Yes ★★★: Yes | Provide calculations of the transient coupled one-dimensional heat and moisture transport in multi-layer building components exposed to natural weather using WUFI-ORNL/IBP for each construction condition. | Show proposed zoning and corresponding square footage for all conditioned spaces. Show temperature range for each zone and interior surface temperatures, when applicable. | After occupancy, provide 2 weeks of 15 minute trend history of space and surface temperature (when controlled). |
Attribute | Baseline | ★ Tier 1 High Performance | ★★ Tier 2 High Performance | ★★★ Tier 3 High Performance | Verification |
Measurements & Verification | Plans & Specifications | Calculations & Analysis | Design Basis of Design | Construction Verification |
Humidity Control | | | | | | | | |
Reference | ASHRAE 55-2010, graphic comfort zone method | ASHRAE 55-2010, Michalski (1998), 2011 ASHRAE Handbook – HVAC Applications | ASHRAE 55-2010, Michalski (1998), 2011 ASHRAE Handbook – HVAC Applications | ASHRAE 55-2010, Michalski (1998), 2011 ASHRAE Handbook – HVAC Applications | ASHRAE 0 ASHRAE 1.1 SMACNA | ASHRAE 0 ASHRAE 1.1 | | | |
Performance | Maximum 62°F dew point | RH setpoint (Historic annual average at indoor dry bulb temperature = 70°F, default 50%RH), Class C control (no short term RH range), 25% to 75% seasonal setpoint adjustment, and 62°F dew point maximum. | RH setpoint (Historic annual average at indoor dry bulb temperature = 70°F, default 45%RH), Class B controlled range of +/- 10% RH short term, +/- 10% seasonal setoint adjustment, and 62°F dew point maximum. | RH setpoint (Historic annual average at indoor dry bulb temperature = 70°F, default 45%RH), Class A controlled range of +/- 5% RH short term, +/- 10% seasonal setoint adjustment (OR +/- 10% RH and NO seasonal setpoint adjustment), and 62°F dew point maximum. | Baseline: No ★: No ★★: Yes ★★★: Yes | Baseline: Yes ★: Yes ★★: Yes ★★★: Yes | | Show relative humidity control range for each zone and describe method of control when applicable. | After occupancy, provide 2 weeks of 15 minute trend history of space relative humidity (when controlled). |
Attribute | Baseline | ★ Tier 1 High Performance | ★★ Tier 2 High Performance | ★★★ Tier 3 High Performance | Verification |
Measurements & Verification | Plans & Specifications | Calculations & Analysis | Design Basis of Design | Construction Verification |
Air Movement | | | | | | | | | |
Reference | ASHRAE 55-2010 | ASHRAE 55-2010 | ASHRAE 55-2010 | ASHRAE 55-2010 | ASHRAE 0 ASHRAE 1.1 SMACNA | ASHRAE 0 ASHRAE 1.1 | | | |
Performance | Less than 40 fpm at occupied level | Occupant controlled between 20 and 150 fpm | Occupant controlled between 20 and 150 fpm | Same as ★★ | Baseline: No ★: Yes ★★: Yes ★★★: Yes | Baseline: Yes ★: Yes ★★: Yes ★★★: Yes | | Describe air speed performance and how it will be achieved by the proposed design. | Verify space air speed at occupant level during TAB/Cx. |
Attribute | Baseline | ★ Tier 1 High Performance | ★★ Tier 2 High Performance | ★★★ Tier 3 High Performance | Verification |
Measurements & Verification | Plans & Specifications | Calculations & Analysis | Design Basis of Design | Construction Verification |
Pressure | | | | | | | | | |
Reference | | 2009 ASHRAE Handbook – HVAC Fundamentals | 2009 ASHRAE Handbook – HVAC Fundamentals, Lstiburek (1999), Quirouette (2004) | | ASHRAE 0 ASHRAE 1.1 SMACNA | ASHRAE 0 ASHRAE 1.1 | | Coordinate with Building Enclosure Air Tightness metric. | |
Performance | Active pressure control by floor to achieve 0.05" w.c. or less positive building pressure when occupied, and when outside dewpoint is higher than 47°F when unoccupied. | Maintain building perimeter zones at 0.05" w.c. positive with respect to outdoor; control per exposure per floor when outside dewpoint is higher than 47°F. No design negative pressure spaces at building perimeter. | ★ and provide envelope cavities at 0.02" w.c. positive with respect to interior occupied space when outside temperature drops below dew point of inside air. | Same as ★★, except allow mandatory negative pressure spaces at building perimeter and provide active envelope cavity pressurization at 0.02" w.c. positive with respect to environment with greater dew point. | Baseline: Yes ★: Yes ★★: Yes ★★★: Yes | Baseline: Yes ★: Yes ★★: Yes ★★★: Yes | | Describe building air pressure performance and how it will be achieved by the proposed design. | Prior to occupancy, provide 24 hours of 5-min trend history of building air pressure. |
Attribute | Baseline | ★ Tier 1 High Performance | ★★ Tier 2 High Performance | ★★★ Tier 3 High Performance | Verification |
Measurements & Verification | Plans & Specifications | Calculations & Analysis | Design Basis of Design | Construction Verification |
Ventilation | | | | | | | | | |
Reference | ASHRAE 62.1-2010 | ASHRAE 62.1-2010 | ASHRAE 62.1-2010 | ASHRAE 62.1-2010 | ASHRAE 0 ASHRAE 1.1 SMACNA | ASHRAE 0 ASHRAE 1.1 | | | |
Performance | · Standard 62.1 VRP only · AFMS on VAV systems | · Standard 62.1 VRP only · LEED EA materials credits · AFMS on VAV systems | · 20 cfm/person minimum for all occupancies in the breathing zone · LEED EA materials credits · AFMS on all systems | · ★★ except: · 30 cfm/p minimum in offices at breathing zone | Baseline: Yes ★: Yes ★★: Yes ★★★: Yes | Baseline: Yes P★: Yes ★★: Yes ★★★: Yes | Provide Standard 62.1 VRP calculations for each air handling system | Describe how minimum ventilation rates will be maintained for all systems. | Verify HVAC system minimum ventilation rates during TAB/Cx. Provide 24 hours of 15 minute trend history of each AFMS to verify minimum ventilation control. |
Attribute | Baseline | ★ Tier 1 High Performance | ★★ Tier 2 High Performance | ★★★ Tier 3 High Performance | Verification |
Measurements & Verification | Plans & Specifications | Calculations & Analysis | Design Basis of Design | Construction Verification |
Filtration | | | | | | | | | |
Reference | ASHRAE 62.1-2010, ASHRAE 52.2-2007 | ASHRAE 62.1-2010, ASHRAE 52.2-2008 | ASHRAE 62.1-2010, ASHRAE 52.2-2009 | ASHRAE 62.1-2010, ASHRAE 52.2-2010 | ASHRAE 0 ASHRAE 1.1 AABC NEBB, or TABB | ASHRAE 0 ASHRAE 1.1 | | | |
Performance | · MERV 6 upstream of all cooling coils and other devices with wetted surfaces · MERV 6 on OA where PM10 limit exceeded · MERV 11 on OA where PM2.5 limit exceeded | · MERV 8 for all coils · MERV 11 on OA where PM2.5 limit exceeded | · MERV 8 for all coils · MERV 13 for outdoor air, no prefilters | · MERV 13 for all supply air units with OA, no prefilters · MERV 8 for recirculating units with coils · UVGI at cooling coils | Baseline: Yes ★: Yes ★★: Yes ★★★: Yes | Baseline: Yes ★: Yes ★★: Yes ★★★: Yes | | Describe proposed filtration design for all air handling systems. | Verify installed filtration during TAB/Cx. |
Attribute | Baseline | ★ Tier 1 High Performance | ★★ Tier 2 High Performance | ★★★ Tier 3 High Performance | Verification |
Measurements & Verification | Plans & Specifications | Calculations & Analysis | Design Basis of Design | Construction Verification |
Acoustics | | | | | | | | | |
Reference | ASHRAE Handbook - Applications 2007 | ASHRAE Handbook - Applications 2008 | ASHRAE Handbook - Applications 2009 | ASHRAE Handbook - Applications 2010 | ASTM E336 | | | Coordinate with Building Enclosures STC Metric | |
Performance | Comply with ASHRAE Applications Chapter 48, Table 1 | Comply with ASHRAE Applications Chapter 48, Table 1 | Comply with ASHRAE Applications Chapter 48, Table 1 Provide sound masking | Comply with ASHRAE Applications Chapter 48, Table 1 Provide sound masking | Baseline: Yes ★: Yes ★★: Yes ★★★: Yes | Baseline: Yes ★: Yes ★★: Yes ★★★: Yes | | List design RC level goals for all space types and describe how design will meet these goals. | Verify space acoustic sound levels during TAB/Cx. |
Attribute | Baseline | ★ Tier 1 High Performance | ★★ Tier 2 High Performance | ★★★ Tier 3 High Performance | Verification |
Measurements & Verification | Plans & Specifications | Calculations & Analysis | Design Basis of Design | Construction Verification |
Operational Efficiency | | | | | | | | | |
Equipment Performance | 90.1-2010 | 90.1-2010 | 90.1-2009 | Greater of Tier 2 Energy Star or 189.1-2011 | Yes | Yes | | Describe what efficiency level is proposed for the HVAC equipment. | Cx agent to confirm equipment efficiencies during equipment submittal review. |
Fan Energy Performance | 90.1-2010 | 90.1-2010 - 5% | 189.1-2011 | 189.1-2011 - 10% | | Yes | Provide fan power limitation calculation per 90.1-2010 Table 6.5.3.1.1.A. | Describe how fan energy performance will be less than metric. | Cx agent to confirm fan equipment efficiencies during equipment submittal review. |
HVAC Energy Performance | 90.1-2010 | 10% Below 90.1-2010 | 15% Below 189.1-2011 | 30% Below 189.1-2011 | | | Provide 90.1-2007 Appendix G energy model demonstrating HVAC annual energy does not exceed project target. | Describe HVAC strategies employed in energy model that result in energy target being met. | Cx agent to confirm energy model HVAC equipment performance assumptions on design reviews and submittal reviews. |
HVAC Energy Metering | Not Required | 80% of HVAC Energy | 90% of HVAC Energy | 100% of HVAC Energy | Yes | Yes | Provide energy model results showing that % HVAC energy metering is met. | Describe proposed HVAC metering scheme. | Calibrate all meters and provide 2 weeks of 15 minute trend history for all HVAC meters. |
Attribute | Baseline | ★ Tier 1 High Performance | ★★ Tier 2 High Performance | ★★★ Tier 3 High Performance | Verification |
Measurements & Verification | Plans & Specifications | Calculations & Analysis | Design Basis of Design | Construction Verification |
Maintainability | | | | | | | | | |
HVAC Motors | >1500 SF/Motor | >2000 SF/Motor | >3000 SF/Motor | >4000 SF/Motor | | Yes | Provide the total building square footage divided by the number of HVAC motors. | Describe HVAC motor density and locations. | Cx agent to confirm during design review. |
Air Handler Locations | Indoors/Outdoors | Indoors | Indoors | Indoors | | Yes | | Describe the locations of the the air handling units | Cx agent to confirm during design review. |
Equipment and Part Replacement | Accessible | Accessible | Easily Accessible | Easily Accessible | | Yes | | Describe how each piece of equipment can be repaired and replaced. | Cx agent to confirm during design review and functional commissioning. |
Access Doors | Required | Required | Required | Required | | Yes | Yes | Describe where all access doors have been specified for maintenance access. | Cx agent to confirm during design review and functional commissioning. |
Motor & Filter Accessibility | 70% easily accessible without ladders | 80% easily accessible without ladders | 90% easily accessible without ladders | 100% easily accessible without ladders | | Yes | | Show quantity of filter and motor locations that require ladders to access. | Cx agent to confirm during design review and functional commissioning. |
Maintenance | Periodic | Periodic | Preventive | Reliability-Centered | | Yes | | Describe whether a predictive or reliability-based maintenance system has been specified to ease maintenance. | Cx agent to confirm during design review and functional commissioning. |
Attribute | Baseline | ★ Tier 1 High Performance | ★★ Tier 2 High Performance | ★★★ Tier 3 High Performance | Verification |
Measurements & Verification | Plans & Specifications | Calculations & Analysis | Design Basis of Design | Construction Verification |
Operability | | | | | | | | | |
Ease of Operation | Specialized Training for Most Systems | Specialized Training for Some Systems | Systems are similar | Systems are similar and easily operated | | Yes | | Describe what type of training will be required for the building operators. | Cx agent to confirm during design review. |
Control Complexity | Difficult for average operator to understand | Difficult for average operator to understand | Easy for average operator to understand | Easy for average operator to understand | | Yes | | Provide a written description of whether the proposed systems are easy or difficult for the average building operator to understand. | Cx agent to confirm during design review. |
Instrumentation | Instrumentation and test ports shall be provided for measuring temperatures and pressures at each piece of HVAC equipment | Instrumentation and test ports shall be provided for measuring temperatures and pressures at each piece of HVAC equipment | Instrumentation and test ports shall be provided for measuring temperatures and pressures at each piece of HVAC equipment | Instrumentation and test ports shall be provided for measuring temperatures and pressures at each piece of HVAC equipment | | Yes | | Describe instrumentation and test port design scheme for ease of operation. | Cx agent to confirm during design review. |
Attribute | Baseline | ★ Tier 1 High Performance | ★★ Tier 2 High Performance | ★★★ Tier 3 High Performance | Verification |
Measurements & Verification | Plans & Specifications | Calculations & Analysis | Design Basis of Design | Construction Verification |
Service Life | | | | | | | | | |
Chillers | 15 Yrs | 20 Yrs | 20 Yrs | 30 Yrs | | Yes | | Describe construction type and expected service life for each piece of major HVAC equipment. | Cx agent to confirm through equipment submittal review. |
Cooling Towers | 15 Yrs | 20 Yrs | 25 Yrs | 35 Yrs |
Boilers | 15 Yrs | 20 Yrs | 25 Yrs | 30 Yrs |
Air Handlers | 20 Yrs | 25 Yrs | 30 Yrs | 40 Yrs |