energy star multifamily high rise program testing and verification protocols webinar – part ii...
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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
2
1.1 ENERGY STAR Appliances
3
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
4
• 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
5
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
6
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
7
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
8
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
9
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
10
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)
11
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)
12
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)
13
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
14
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
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
16
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
17
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
18
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
19
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
20
Insulation around corner
Assembly view
Indicate thickness
3.1 Wall Construction & InsulationExterior Wall Insulation
21
Insulation installed at
adjacent buildingPhoto with
measuring tape indicating thickness
Exterior insulation assembly
3.1 Wall Construction & InsulationInterior Wall Insulation
22
Mineral wool installed evenly
without gaps
Batt insulation installed without compression or
gaps; seams taped
3.2 Roof Construction & Insulation
23
Visual Inspection
Data Sheet
Test Procedure
Instrumented Measurement
Third-Party Commissioning
Sampling: • Each roof assembly
• At drains• At perimeter
3.3 Floor Construction & Insulation
24
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
25
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
26
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
27
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
28
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
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