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ENERGY STAR Multifamily High Rise Program

This webinar provides testing and verification protocols for appliances, domestic water heating, envelope, garages, and heating and cooling systems in ENERGY STAR certified multifamily high rise buildings.

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ENERGY STAR Multifamily High Rise Program

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  1. ENERGY STARMultifamily High Rise Program Testing and Verification Protocols Webinar – Part II August 2011

  2. Testing and Verification Protocols • 1.0 Appliances • 2.0 Domestic Water Heating • 3.0 Envelope • 4.0 Garages • 5.0 Heating and Cooling

  3. 1.1 ENERGY STAR Appliances • Sampling: • One representative photo of each appliance type, make and model

  4. 2.0 & 5.0 DHW, Heating and Cooling Systems • DHW/Heating/Cooling Plant: System size, type, design, and rated efficiency, sizing calculations • Distribution System: Piping and/or ductwork configuration, mixing valves, zoning, insulation requirements • Controls: System controls and settings • Terminal Units (Heating & Cooling): Type, size, design, location, controls • Heat Rejection (Cooling): Type, size, location and efficiency • Sampling: • 100% of central primary equipment • RESNET for distributed systems, plumbing fixtures and delivery temperatures

  5. 2.0 & 5.0 DHW, Heating and Cooling Systems Schedule: • Commissioning occurs throughout • Training occurs post QA and verification • GC to verify performance data before accepting deliveries • Minimum of one (1) on-site inspection, ASAP after installation Sample Gant Chart

  6. 2.0 & 5.0 DHW, Heating and Cooling Systems Requirements for DHW, heating and cooling systems: • Verify size, type, design, controls & rated efficiencies • Size heating and cooling equipment using ACCA Manuals J, D & S • Cx agent or the responsible party may perform inspections • Provide Cx results via T&V Worksheets and the Photo Template • SSCs can be only be used with qualified 3rd parties Equipment Faceplate System controls & settings

  7. 2.0 & 5.0 DHW, Heating and Cooling Systems Requirements for DHW, heating and cooling systems (cont’d): • Pipes 1.5” diameter or less have 1” insulation, pipes greater than 1.5” diameter have a minimum of 1.5” of insulation. • Location and configuration of combustion/intake air venting • Training & Operating Manuals Pipe Insulation Operating Manual

  8. 2.0 Domestic Water Heating Requirements for domestic water heating systems: • Set to deliver temperatures within the 120-125°F range. • Mixing valve and temperature set point. (central systems) • Storage tank insulation (central systems) • Plumbing fixture flow rate (GPM), quantity and location Electronic Mixing Valve PlumbingFixtures

  9. 5.0 All Heating and Cooling Systems Requirements for heating and cooling systems: • R-6 duct insulation in unconditioned space, R-8 for Prescriptive Path • Duct sealing details must go in CDs! Visual inspection • Flex duct must meet SMACNA standards (see Appendix C) • Non-continuous OA systems must have motorized damper Outdoor Air Damper

  10. 5.0 All Heating and Cooling Systems Requirements for heating and cooling systems: • When applicable, obtain and keep the following information: • Field measured refrigerant charge • Field measured airflow over evaporator/condenser coil • Nameplate efficiency • Nameplate heat exchange capacity Air Flow Report

  11. 5.1&5.2 Central Heating and Cooling Systems (5+ Units) Requirements for central heating and cooling systems: • Reverse return and/or sized based water velocity < than 4 ft/s • Size circulating pumps with Chapter 43 of ASHRAE or equivalent • Circulator pressure controls adjustments (optional) • Terminal equipment must be separated from riser/loop & shall be controlled by a thermostat within the same apartment Terminal devices and controls Reverse Return Piping

  12. 5.1 Central Heating Systems (5+ Units) Requirements for central heating systems: • Proper installation of gauges, sensors and set points • Verify supply & delivery temperature • Return water temperature for condensing boiler systems • Outdoor reset, warm weather shut down, night setback • Supplemental heating in unconditioned spaces must be modeled Gauges and Sensors Outdoor Reset

  13. 5.2 Central Cooling Systems (5+ Units) Requirements for central cooling systems: • Cooling tower fan motor must be equipped with VFD controlled by a temperature sensor on the condenser water supply pipe. Cooling Tower VFD Temperature Sensor

  14. 5.3&5.4 Distributed (Individual Apt) Heating and Cooling Systems Requirements for distributed heating & cooling systems: • Design to ACCA Manuals J, D and S or equivalent procedure • ENERGY STAR Home Rater and Contractor HVAC Checklists (optional) • Verify bedrooms have been provided with pressure-balancing solution • Duct leakage testing Duct Leakage Testing

  15. 5.3&5.4 Distributed (Individual Apt) Heating and Cooling Systems Heating and Cooling Duct Leakage Testing • Single point measurement with duct leakage tester • Leakage size is dependent on floor area • For in-unit systems total maximum duct leakage • ≤8 CFM25 per 100 ft2 of conditioned floor area for units smaller than 1200 ft2 • ≤6 CFM25 per 100 ft2 of conditioned floor area for units larger than 1200 ft2

  16. 5.3 Distributed (Individual Apartment) Heating Systems Requirements for distributed heating systems: • Proper installation of gauges, sensors and set points • Outdoor reset, warm weather shut down, night setback Aquastat Night Setback

  17. 5.4 Distributed (Individual Apartment) Cooling Systems Requirements for distributed cooling systems: • AC penetration must be sealed air-tight AND weather-tight A/C Sleeve Sealed at Façade A/C Sleeve Sealed at Structural Wall

  18. 3.1 Wall Construction & Insulation • Sampling: • Each unique wall assembly – type, thickness, location, coverage, installation • Below grade walls • Above grade walls’ exterior insulation • Above grade walls’ interior insulation • 15% of each wall assembly RESNET Grade I insulation Image courtesy RESNET

  19. 3.1 Wall Construction & Insulation Use the T&V worksheets to identify all layers of insulation during plan review and during your inspection in the field

  20. 3.1 Wall Construction & InsulationBelow Grade Wall Insulation Insulation around corner Indicate thickness Assembly view

  21. 3.1 Wall Construction & InsulationExterior Wall Insulation Insulation installed at adjacent building Exterior insulation assembly Photo with measuring tape indicating thickness

  22. 3.1 Wall Construction & InsulationInterior Wall Insulation Batt insulation installed without compression or gaps; seams taped Mineral wool installed evenly without gaps

  23. 3.2 Roof Construction & Insulation • Sampling: • Each roof assembly • At drains • At perimeter

  24. 3.3 Floor Construction & Insulation • Sampling: • At least 15% of each unique floor assembly - insulation type, thickness, location, coverage, installation • Above unconditioned space • Below grade slab floor insulation • Slab-on-grade insulation

  25. 3.4 Window Selection, U and SHGC • Sampling: • At least one of each different type of window installation and energy performance specification • All windows in a representative apartment from each type • Use low-e sensor

  26. 3.4 Window Selection, U and SHGC Ample sealing around window frame NFRC label indicating SHGC, U-value, ENERGY STAR Air barrier wrapped inside rough opening

  27. 3.5 Exterior Door Selection/Vestibules • Sampling: • 100% of entryways and vestibules • At least 50% of common exterior doors Vestibule installed per code Weatherstripping with rigid fastener and replaceable foam gasket

  28. 4.1 Garage Heating & Air-Sealing • Sampling: • Not allowed • Inspect 100% of connections between the garage and conditioned space for air sealing • Inspect 100% of heating elements and controls Image courtesy PNNL & ORNL

  29. The End Questions? Contact: MFHR@energystar.gov

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