Mark Hydeman, PE of Taylor Engineering

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Presentation transcript:

Mark Hydeman, PE of Taylor Engineering Title 24 2005 and 2008 Nonresidential Mechanical and Acceptance Test Requirements Mark Hydeman, PE of Taylor Engineering The Non-Residential HVAC Lead for the 2001, 2005 and 2008 Standards November 2, 2006 http://www.energy.ca.gov/title24/2005standards/index.html

Acknowledgements Acceptance Tests CEC Codes and Standards Lead: Bill Pennington CEC Acceptance Test Lead: Tav Commins Lead Acceptance Consultant: Jeff Johnson, New Buildings Institute Content Contributors 2005: PECI: Larry Luskay (tests) HMG: Jon McHugh (consultant) Farnsworth Group: Chad Dorgan (forms) Taylor Engineering: Mark Hydeman (gadfly) Content Contributors 2008: PECI: Larry Luskay, Kristin Heinemeier & Kirstin Pinit HMG: Jon McHugh Taylor Engineering: Mark Hydeman CCC Meeting Title 24 Acceptance Tests

Title 24 Acceptance Tests Agenda Review of Title 24 Structure Review of Acceptance Tests Detailed Example of an Acceptance Test CCC role for 2008 Discussion CCC Meeting Title 24 Acceptance Tests

Title 24 Acceptance Tests Resources – 2005 Standard http://www.energy.ca.gov/title24/2005standards/index.html The Standard, Title 24 The Non-Residential ACM Manual Appendix NG (duct leakage) Appendix NJ (acceptance tests) The Non-Residential Compliance Manual Examples References Compliance Forms CCC Meeting Title 24 Acceptance Tests

Title 24 Acceptance Tests Resources – 2008 Standard http://www.energy.ca.gov/title24/2008standards/index.html Tav Commins tcommins@energy.state.ca.us Ram Verma rverma@energy.state.ca.us Energy Efficiency Hotline E-mail: title24@energy.state.ca.us Phone: 916-654-5106 or Phone: 1-800-772-3300 (toll free in Calif.) CCC Meeting Title 24 Acceptance Tests

Title 24 Acceptance Tests Iconographic Key Mandatory Measure Prescriptive Measure Acceptance Test CCC Meeting Title 24 Acceptance Tests

Overview of Title 24

Title 24 Acceptance Tests Standards Structure Design Construction CCC Meeting Title 24 Acceptance Tests

Title 24 Acceptance Tests Mandatory Measures Must be done in all projects (no trade off) Things that can’t be modeled or shouldn’t be traded off Examples Equipment efficiencies Ventilation requirements Temperature controls Zoning CCC Meeting Title 24 Acceptance Tests

Prescriptive Measures Can be traded off through the performance method of compliance Examples Economizers Variable air flow Limitations on electric resistance heat and air cooled chillers CCC Meeting Title 24 Acceptance Tests

Title 24 Acceptance Tests Performance Approach Computer simulation of a project Two models made: Budget model meets the mandatory and prescriptive requirements Design model represents your project Project complies if TDV of design is less than or equal to TDV of budget model Can trade off envelope, HVAC and lighting energy CCC Meeting Title 24 Acceptance Tests

Acceptance Testing Overview

Title 24 Acceptance Tests 2005 Defined in various mandatory Standard’s sections Detailed in the NR ACM appendix NJ 2008 Defined in mandatory Standards section 125 Detailed in the NR Standard’s Appendix NRA7 CCC Meeting Title 24 Acceptance Tests

2005 HVAC Acceptance Requirements ACM Section and Test Standard Section NJ 3.1 Variable Air Volume Systems Outdoor Air Acceptance 121(f) NJ 3.2 Constant Volume Systems Outdoor Air Acceptance NJ 4 Constant Volume Packaged HVAC Systems Acceptance 122(h) NJ 5 Air Distribution Acceptance 125(a) NJ 7 (Air-Side) Economizer Acceptance 125(b) NJ 8 Demand Control Ventilation Acceptance 121(c)5 NJ 9 Supply Fan Variable Flow Controls Acceptance 125(c) NJ 10.1 Variable (Hydronic) Flow Controls Acceptance 125(d) NJ 10.2 Automatic Isolation Controls Acceptance NJ 10.3 Supply Water Temperature Reset Controls Acceptance NJ 10.4 Water-loop Heat Pump Controls Acceptance NJ 10.5 (Pump) Variable Frequency Drive Controls Acceptance CCC Meeting Title 24 Acceptance Tests

2005 Lighting Acceptance Requirements ACM Section and Test Standard Section NJ 6.1 Automatic Daylighting Controls Acceptance 131(f) NJ 6.2 Occupancy Sensor Acceptance NJ 6.3 Manual Daylighting Controls Acceptance NJ 6.4 Automatic Time Switch Control Acceptance CCC Meeting Title 24 Acceptance Tests

Title 24 Acceptance Tests Compliance Process Design is checked and a signed certificate of compliance is submitted for the building permit Tests are performed and a signed certificate of acceptance is submitted for the certificate of occupancy CCC Meeting Title 24 Acceptance Tests

When Acceptance Testing Occurs? Specified during the design phase Implemented during construction After start-up (except for duct leakage) Before occupancy CCC Meeting Title 24 Acceptance Tests

Who Does Acceptance Testing? Can be done by Engineer, or Contractor, or 3rd Party Different parties can do different tests, but… Someone has to sign the final certificate of acceptance CCC Meeting Title 24 Acceptance Tests

How to Specify the Acceptance Tests Where do they go in the specifications? Under TAB Section? Under Controls? Under Commissioning? Throughout several sections? Wherever you put it you must be clear about: Who does the work (roles and responsibilities) What work they must do When it must be done Submittal requirements Who signs the forms CCC Meeting Title 24 Acceptance Tests

Title 24 Acceptance Tests Acceptance forms end in “–A” CCC Meeting Title 24 Acceptance Tests

Title 24 Acceptance Tests AHU-1 MECH-2-A TAB AHU-2 MECH-2-A TAB CCC Meeting Title 24 Acceptance Tests

Title 24 Acceptance Tests Deleted in 2008   CCC Meeting Title 24 Acceptance Tests

Air-Side Economizer Acceptance

Title 24 Acceptance Tests Purpose Check economizer installation and provision for exhaust or relief Test economizer operation CCC Meeting Title 24 Acceptance Tests

Title 24 Acceptance Tests Overview (2005) References Standard Sections §144(e) and §125(b) Non-Residential ACM Manual NJ 7 Scope All new systems with air-side economizers No testing required if economizer is factory installed and certified operational CCC Meeting Title 24 Acceptance Tests

Base Requirement in Title 24 §144(e) Economizers. Each individual cooling fan system that has a design supply capacity over 2,500 cfm and a total mechanical cooling capacity over 75,000 Btu/hr. shall include either: An air economizer capable of modulating outside-air and return-air dampers to supply 100 percent of the design supply air quantity as outside-air; or A water economizer … [Be] capable of providing partial cooling even when additional mechanical cooling is required to meet the remainder of the cooling load. Air-side economizers shall have high limit shutoff controls complying with TABLE 144-C. Only where 144(e) applies CCC Meeting Title 24 Acceptance Tests

Title 24 Acceptance Tests Related Tests NJ 3.1 Variable Air Volume Systems Outdoor Air Acceptance NJ 3.2 Constant Volume System Outdoor Air Acceptance NJ 8 Demand Control Ventilation Acceptance This test should be combined with minimum OSA to reduce time and costs CCC Meeting Title 24 Acceptance Tests

Construction Inspection High limit lockout switch type and setting Location and installation of outside air sensor Wiring of economizer controls Provision for exhaust or relief CCC Meeting Title 24 Acceptance Tests

Title 24 Acceptance Tests Test Procedure Simulate cooling load with high-limit switch disabled Simulate cooling load with high-limit switch enabled Return system to normal CCC Meeting Title 24 Acceptance Tests

Title 24 Acceptance Tests Project information (typical) Construction inspection (measure specific) CCC Meeting Title 24 Acceptance Tests

Title 24 Acceptance Tests Certification (typical) In 2008 a second block with signature will be added for review of documentation by licensed contractor or engineer CCC Meeting Title 24 Acceptance Tests

Title 24 Acceptance Tests Equipment tests (measure specific) Testing results (measure specific) Final result (typical) CCC Meeting Title 24 Acceptance Tests

Title 24 Acceptance Tests What’s New in 2008 All tests will be in Standards Clean up of known conflicts New tests will be added with new measures Economizer tests for manufacturers will be detailed Possible testing of fenestration systems Expansion of lighting tests to signage and outdoor lights CCC Meeting Title 24 Acceptance Tests

Example Economizer Issue Economizers only required for 2-stage AC units (>65,000 Btuh AND >2,500 cfm) Testing for all economizers Tests need to be different for one and two stage units: Integration High limit switches CCC Meeting Title 24 Acceptance Tests

Title 24 Acceptance Tests Hot Issues How/whether to test high limit switches for electronic controllers (like the Honeywell H705)? Defining a test that a TAB technician can do Avoiding warranty issues with controllers/AC units What to do when a unit fails the test Should we require 2-stage thermostats for economizers on single stage units? CCC Meeting Title 24 Acceptance Tests

Title 24 Acceptance Tests Questions CCC Meeting Title 24 Acceptance Tests