ENERGY STARMultifamily High Rise Program

Testing and Verification Protocols Webinar – Part II

August 2011

Testing and Verification Protocols

• 1.0 Appliances

• 2.0 Domestic Water Heating

• 3.0 Envelope

• 4.0 Garages

• 5.0 Heating and Cooling

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1.1 ENERGY STAR Appliances

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Sampling: • One representative photo of each appliance type, make

and model

Visual Inspection

Data Sheet

Test Procedure

Instrumented Measurement

Third-Party Commissioning

2.0 & 5.0 DHW, Heating and Cooling Systems

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• 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

Visual Inspection

Data Sheet

Test Procedure

Instrumented Measurement

Third-Party Commissioning

Sampling: • 100% of central primary

equipment• RESNET for distributed

systems, plumbing fixtures and delivery temperatures

2.0 & 5.0 DHW, Heating and Cooling Systems

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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

2.0 & 5.0 DHW, Heating and Cooling Systems

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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

2.0 & 5.0 DHW, Heating and Cooling Systems

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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

2.0 Domestic Water Heating

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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

Plumbing Fixtures

5.0 All Heating and Cooling Systems

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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

5.0 All Heating and Cooling Systems

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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

5.1&5.2 Central Heating and Cooling Systems (5+ Units)

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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

Reverse Return PipingTerminal devices

and controls

5.1 Central Heating Systems (5+ Units)

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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

5.2 Central Cooling Systems (5+ Units)

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Cooling Tower VFD Temperature Sensor

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.

5.3&5.4 Distributed (Individual Apt) Heating and Cooling Systems

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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

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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

Unit Size Standard Example Size Example CFM25 Max

<1200 SF 8 CFM25/100 SF 1000 SF 80

>1200 SF 6 CFM25/100 SF 1300 SF 78

5.3&5.4 Distributed (Individual Apt) Heating and Cooling Systems

5.3 Distributed (Individual Apartment) Heating Systems

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Requirements for distributed heating systems:• Proper installation of gauges, sensors and set points• Outdoor reset, warm weather shut down, night setback

Aquastat Night Setback

5.4 Distributed (Individual Apartment) Cooling Systems

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A/C Sleeve Sealed at Façade

A/C Sleeve Sealed at Structural Wall

Requirements for distributed cooling systems:• AC penetration must be sealed air-tight AND weather-tight

3.1 Wall Construction & Insulation

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Visual Inspection Data Sheet Test Procedure Instrumented Measurement Third-Party Commissioning

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

Image courtesy RESNET

RESNET Grade I insulation

3.1 Wall Construction & Insulation

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Use the T&V worksheets to

identify all layers of insulation during plan review and

during your inspection in the

field

3.1 Wall Construction & InsulationBelow Grade Wall Insulation

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Insulation around corner

Assembly view

Indicate thickness

3.1 Wall Construction & InsulationExterior Wall Insulation

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Insulation installed at

adjacent buildingPhoto with

measuring tape indicating thickness

Exterior insulation assembly

3.1 Wall Construction & InsulationInterior Wall Insulation

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Mineral wool installed evenly

without gaps

Batt insulation installed without compression or

gaps; seams taped

3.2 Roof Construction & Insulation

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Visual Inspection

Data Sheet

Test Procedure

Instrumented Measurement

Third-Party Commissioning

Sampling: • Each roof assembly

• At drains• At perimeter

3.3 Floor Construction & Insulation

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Visual Inspection Data Sheet Test Procedure Instrumented Measurement Third-Party Commissioning

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

3.4 Window Selection, U and SHGC

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Visual Inspection

Data Sheet

Test Procedure

Instrumented Measurement

Third-Party Commissioning

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

3.4 Window Selection, U and SHGC

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Ample sealing around window frame

Air barrier wrapped inside rough opening

NFRC label indicating SHGC,

U-value, ENERGY STAR

3.5 Exterior Door Selection/Vestibules

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Sampling: • 100% of entryways and

vestibules• At least 50% of common

exterior doors

Visual Inspection Data Sheet Test Procedure Instrumented Measurement Third-Party Commissioning

Vestibule installed per code

Weatherstripping with rigid fastener and replaceable

foam gasket

4.1 Garage Heating & Air-Sealing

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Visual Inspection Data Sheet Test Procedure Instrumented Measurement Third-Party Commissioning

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

The End

Questions?

Contact:

MFHR@energystar.gov

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