ASHRAE Intro to LEED NC Building Commissioning EMS 30mins

transcript

INTRODUCTION TO LEED™HVAC

BUILDING COMMISSIONING

Harris Sanoo,Commissioning Manager (ASHRAE Certified)

Energy Management Services Int.

Topics

• Building Commissioning Overview and Advantages

• Commissioning Process and Objectives

• LEED Commissioning Requirements

• Project Team involvement

• Design, Construction and Post occupancy phase

activities

What is Building Commissioning?

• Commissioning is a process of verifying and

documenting that the building Energy Systems are

designed, installed and operated efficiently according

to owner’s requirements and basis of design.

• It begins in pre-design and continues through

design, construction, and occupancy of the facility.

• Commissioning is often misinterpreted as ‘Testing

and Balancing’ (TAB), which is an activity at the end

of construction by a contractor.

Commissioning Benefits

• Delighted occupants &

stakeholders

• Systems perform as intended

• Lower energy use and cost

• Early detection of potential

problems

• Better building documentation

• Trained building operators

• Lower operation and

maintenance cost

• Reduced Contractor callbacks

• Improves maintainability of

equipment/systems

Occupant Needs

Occupancy

& Operation

Pre-Design

Design

Construction

The Commissioning Process

• The Commissioning (Cx) Process

involves steps that are integrated into

every phase of the project:

• Commissioning is NOT just testing at

the end!

PRE-DESIGN DESIGN CONSTRUCTION OCCUPANCY & OPERATION

Cx: Pre-Design Phase Objectives

• Document/Review Owner’s Project

Requirements

• Scope & budget for commissioning

• Select Commissioning Authority

• Create Commissioning Plan

Cx: Design Phase Objectives

• Document/Review Basis of Design

• Refine scope of commissioning

• Perform Cx Focused Design Reviews

• Update Commissioning Plan

Cx: Design Phase- Design Review

Some key elements…..

• Cooling load calculation and plant sizing or Peak cooling

• Equipment Sizing

• Building Envelope

• Ventilation strategies and quantities

• Energy saving measures and Building simulation

• System operational sequences

Cx: Design Phase Objectives

• Include commissioning requirements in

construction documents

– Develop commissioning specifications

– Develop construction checklists and functional

performance test procedures

– Define format and content of systems manual

– Define training requirements

Cx: Construction Phase Objectives

• Update Owner’s Project Requirements

• Update Commissioning Plan & schedule

• Review Submittals against Cx Plan, OPR, and BOD

• Review control sequences

• Update construction checklists

• Update functional performance test procedures

• Document construction observations

• Develop Systems/O&M Manuals

Cx: Construction Phase Objectives

• Train O&M Personnel

• Complete Construction Checklists

• Perform Functional Performance Testing (FPT)

• Document deficiencies found during FPT’s (Issues

• Correct deficiencies and retest

• Prepare Final Report

Cx: Occupancy and Operations

Phase Objectives

• Provide ongoing guidance to assist

Operations and Maintenance to achieve

• Complete Seasonal Testing

• Document lessons learned

• Complete warranty follow-up

Commissioning for LEED

New Construction Projects

The LEED

Family of

Rating

Systems

LEED for Building Design and Construction

LEED for Commercial Interiors

LEED for Core and Shell

LEED for Building Operation and Maintenance

LEED for Homes

LEED for Neighborhood Developments

LEED for Schools, Retail, Healthcare

The LEED Credit

Categories

Sustainable Sites (SS) 26

Water Efficiency (WE) 10

Energy & Atmosphere (EA) 35

Materials & Resources (MR) 14

Indoor Environ. Quality (EQ) 15

Innovation & Design (ID) 6

There are 8 prerequisites

EA Prerequisite 1

EA Credit 3

Understanding Commissioning

Requirements

LEED for Building Design and Construction

EA: Prerequisite 1EA: Prerequisite 1

Fundamental Fundamental

Building Energy

Systems

Commissioning

Enhanced Enhanced

Commissioning

EA: Credit 3EA: Credit 3

EA Prerequisite 1 EA Credit 3

Requirements

LEED for New Construction

EA Prerequisite 1Fundamental Building Energy Systems

Commissioning

Intent

• Fundamental Commissioning of the Building Energy

Systems

– Verify that the building’s energy related systems…are

installed, calibrated and perform…according to the owner’s

project requirements, basis of design, and construction

documents

LEED Certification RequirementsEnergy and Atmosphere Prerequisite 1

Fundamental Commissioning of the Building Energy Systems

Requirements:

1. Designate Commissioning Authority (CxA)a. CxA experienced in at least two building projects

b. CxA independent of project design and CM—may be part of same company.

c. CxA reports directly to owner.

d. Small projects: acceptable to have CxA as part of design or construction team

2. CxA reviews Owner’s Project Requirements and Basis of Design.

3. CxA incorporates Commissioning (Cx) requirements into Construction Documents

4. CxA develop and implement Cx Plan

5. CxA verify the installation and performance of the systems to be Cmx.

6. CxA to complete a summary Cmx report

LEED template letter is provided stating items have been completed.

Energy System means….

• Commissioned Systems

– Commissioning process activities shall be completed for the

following energy-related systems, at a minimum:

• Heating, ventilating, air conditioning, and refrigeration

(HVAC&R) systems (mechanical and passive) and associated

controls

• Lighting and daylighting controls

• Domestic hot water systems

• Renewable energy systems (wind, solar, etc.)

Cx Authority Qualifications

• In order to meet this prerequisite, owners are required to use

qualified individuals to lead the commissioning process.

Qualified individuals are identified as those who possess a high

level of experience in the following areas:

– Energy systems design, installation and operation

– Commissioning planning & process management

– Hands-on field experience with energy systems performance,

interaction, start-up, balancing, testing, troubleshooting, operation,

and maintenance procedures

– Good knowledge of Building Energy Simulation procedures

– Energy systems automation control knowledge

Miscellaneous

• This LEED Reference Guide provides guidance on the rigor expected

for this prerequisite for the following:

– Owner’s Project Requirements

– Basis of Design

– Commissioning Plan

– Commissioning Specification

– Performance Verification Documentation

– Commissioning Report

• Owner’s are encouraged to consider including water-using systems,

building envelope systems, and other systems in the scope of the

commissioning plan as appropriate.

Requirements

LEED for BD+C

EA Credit 3Enhanced Commissioning

Intent

• Enhanced Commissioning

– Begin the commissioning process early during the

design process…and execute additional activities

after systems performance verification is

completed.

Energy & Atmosphere Credit 3Enhanced Commissioning

Requirements:1. Prior to start of Construction Document phase, designate

independent CxA.

a. CxA experienced in at least 2 building projects.

b. CxA shall be:

i. Independent of design and construction

ii. Not an employee of design firm—may be contracted through them

iii. Not an employee of CM

iv. Can be a qualified employee or consultant of the Owner

c. CxA report directly to the Owner

d. Requirement has no deviation for project size.

Energy & Atmosphere Credit 3Enhanced Commissioning

Requirements, continued:2. CxA conducts (minimum) one Cmx design review of OPR and BOD

and CD documents. Back-check the review comments.

3. CxA review selected contractor submittals for compliance with the OPR & BOD—concurrent with A/E reviews.

4. CxA assists in the development of the system manual for operating staff.

5. CxA verify requirements for training operating personnel and building occupants.

6. CxA shall be involved with reviewing building operation within 10 months after substantial completion/with staff and occupants. Include a plan for resolution of Cmx issues.

Responsible Tasks

Task Responsibility

Final version of the BOD A/E

System single line diagrams A/E

As-built sequences of operations, control drawings and original setpoints Contractor

Operating instructions for integrated building systems Contractor

Recommended schedule of maintenance requirements and frequency, if not

already included in the project O&M manuals

Contractor

Recommended schedule for retesting of commissioned systems with blank

test forms from the original Commissioning Plan

Recommended schedule for calibrating sensors and actuators Contractor

Occupancy Review

• Assure the involvement by the CxA in reviewing

building operation within 10 months after substantial

completion with O&M staff and occupants. Include a

plan for resolution of outstanding commissioning-

related issues.

• The CxA should coordinate with the Owner and the

O&M staff to review the facility and its performance 8

to 10 months after handover of the facility.

Task 6: Occupancy Review (continued)

• Any outstanding construction deficiencies or deficiencies

identified in this post-occupancy review should be

documented and corrected under manufacturer or

contractor warranties.

• The CxA review of the building operation with operations

staff and occupants should identify any problems in

operating the building as originally intended. Any

significant issues identified by the CxA that will not be

corrected should be recorded in the systems manual.

Primary Responsibility LEED for

New Construction Reference GuideEAp1 Task

EAc3 Task

# Task Description

If you are only meeting

EA Prerequisite 1

If you are meeting EAp1

& EAc3

1 1 Designate Commissioning Authority (CxA) Owner or Project Team Owner or Project Team

2 Document Owner’s Project Requirements (OPR) Owner Owner

2 Develop Basis of Design Design Team Design Team

3Incorporate commissioning requirements into the construction

documentsProject Team or CxA Project Team or CxA

2Conduct commissioning design review prior to mid-construction

documentsCxA

4 Develop and implement a commissioning plan Project Team or CxA Project Team or CxA

3Review contractor submittals applicable to systems being

commissionedCxA

5Verify the installation and performance of commissioned

systemsCxA CxA

4 Develop a systems manual for the commissioned systems Project Team or CxA

5 Verify that the requirements for training are completed Project Team or CxA

6 Complete a summary commissioning report CxA CxA

6Review building operation within 10 months after substantial

completionCxA

Project Team = Owner, Architect

Engineer and/or Builder

ASHRAE Guidelines for Cx

• ASHRAE Guideline 0-2005 – The Commissioning

Process

• ASHRAE Guideline 1.1-2007 – HVAC&R Technical

Requirements for the Commissioning Process

• • ASHRAE Learning Institute course: Commissioning

Process in New and Existing Buildings

• ASHRAE Learning Institute course: Commissioning

Process and ASHRAE’s Guideline 0

Energy Management Services,

Suite 303, Liberty Building,

Dubai, U A E.

Phone: +971 4 2827000

E-mail: harris@ems-int.com

Web: www.ems-int.com