HomeMy WebLinkAboutBuilding Code energy ConservationFlorida Building Code, Energy Conservation, 6ih Edition (2017)
Mandatory Re uirements for Residential Performance, Prescriptive and ERI Methods
ADDRESS: 109 MAIN STREET Permit Number.
Fr. PIERCE , FL,
MANDATORY REQUIREMENTS See individual code sections for full details,
SECTION R401 GENERAL
R401.3 Energy Performance Level (E.PL) display card (Mandatory). The building official shall require that an energy performance.levei-.(EPt )
display card be completed and certified by the builder to be accurate and correct before final approval of the building for occupancy. Florida 1pw,
(Section 553.9085, Florida Statutes) requires the EPL display card to be included as an addendum to each sales cdntract for both presold and
nonpresold residential buildings. The EPL display card contains information indicating the energy performance level and efliciencles of components
installed In a dwelling unit. The building official shall verify that the EPL display card completed and signed by the builder accurately reflects the plans
and specifications submitted to demonstrate code compliance for the building. A copy of the EPL display card can be found in Appendix RD.
rl R402.4 Air leakage (Mandatory). The building thermal envelope shall be constructed to limit air leakage in accordance with the requirements of
Sections R402.4.1 through R402.4.5.
Exception: Dwelling units of R4 Occupancies and multiple attached single family dwellings shall be permitted to
comply wish Section C402.5.
R40Z CI Building thermal enveloTlae building thermal envelope shall comply with Sections R402.4.1.1 and R402.4.1.2.
The seating methods between dissimilar materials shall allow for differential expansion and contraction.
R402.4.1.1 Instatlatfon.The components of the building thermal envelope as listed in Table R402.4.1.1 shall be installed in accordance
with the manufacturer's Instructions and the criteria listed in Table R402.4.1,1, as applicable to the method of construction. Where requdred
by the code offroial, an approved third party shall inspect all components .and verify compliance.
0 R402AI.2 Testing.. , The,building or dwelling unit shall be tested and verified as having an air leakage rate not exceeding seven air.
changes per hour InClimafe.Zones land 2, and. three air changes per hour #n ClimateZone�s 3 through 8, Testing shall be conducted in
accordance with ANSIIRESNEr/ICC, 380 and reported of a pressure of 0.2 Inch w.g: (60 pascals), Testing shall be conducted by either
individuals as defined In; Section 553.493(5) or (7), Florida Statutes, tar individuals licensed as set forth in Section 489.105(3)(t), :(g) or fo 'or `
an approved third party, Awritten report of the results of the test shall be signet! by the party conducting the test and provided to the.code:
official. Testing shall be performed at any time after creation of all penetrations of the building thermal envelope.
Exception: Testing is not required for additions, alterations, renovations, or repairs, of the building thermal envelope of.existing
buildings In which the new construction is less than 85 percent of the building thermal envelope.
During testing:
t. Extedor windows. and doors, fireplace and stove doors shall be closed, but not seated, beyond the intended weatherstripping or
other Infiltration control measures.
2. Dampers Including exhaust, intake, makeup air, backdraft and flue dampers shall be closed, but not sealed beyond intended
infiltration control measures.
3. Interior doors, if installed at the time of the test, shall be open.
4. Exterior doors for continuous ventilation systems and heat recovery ventilators shall be closed and sealed.
5. Heating and cooling systems, If installed at the time of the test, shall be turned off.
6. Supply and return registers, if installed at the. time of the test; shall be fully open.
R402.4.2 Fireplaces. New wood -burning fireplaces shall have tightfitting flue dampers or doors, and outdoor combustion air. Where
using fight -fitting doors on factory -built fireplaces listed and labeled in accordance with UL 127, the doors. shall be tested and listed for the
fireplace. Where using tight fitting doors on masonry fireplaces, the doors shall be listed and labeled In accordance with UL 907.
nR402.4.3 fenestration air IeakageWindows, skylights and sliding glass doors shall have an air infiltration rate of no more than 0.3 rim per
square foot(1.5 tlslm2), and swinging doors no more than 0.5 cim per square foot (2.6 Uslm2), when tested according to NFRe 400 or
AAMA/ WDMA/CSA I Ol/I.SMA440 by an accredited, independent laboratory and listed and labeled by the manufacturer.
Exception: Site -built windows, skylights and doors,
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iUTANDATORY REQUIREMENTS — (Continued)
❑ R402A.4 Rooms containing fuel -burning appliances. In Climate Zones 3 through 8, where open combustion air ducts provide combustion air to
open combustion fuel burning appliances, the appliances and combustion air opening shall be located outside the building thermal envelope or
enclosed in a.room, isolated from inside the thermal envelope. Such rooms shall be seated and insulated in accordance with the envelope requirements
of Table R402.1.2, where the walls, floors and ceilings shall meet not less than the basement wail R-value requirement, The door Into the room shall. be.
fully gasketed and any water lines and ducts in the room insulated in accordance with Section R403. The combustion air duct shall be -insulated where It
passes through conditioned space to a minimum of R-8.
Exceptions:
Direct vent appliances with both intake and exhaust pipes installed .continuous to the outside.
Fireplaces and stoves .complying with Section R402A.2 and Section R1006 of the Florida Building Code, Residential.
❑ R402.4.5 Recessed lighting. Recessed luminaires installed in the building thermal envelope shall be sealed to limit air leakage
between conditioned and unconditioned spaces. All recessed luminaires shall be IC -rated and labeled as having an air leakage rate not
more than 2.6 cfm (0,944 Us) when tested in accordance with ASTM E283 at a 1.57 psf (75 Pa) pressure differential. All recessed
luminaires shall be seated with a gasket or caulk between the housing and the interior wall or ceiling covering.
R403.1 Controls. SECTION R403.SYSTEMS
❑ R403.1.1 Thermostat provision (Mandatory). At least one thermostat shall be provided for each separate heating and cooling system.
❑ 11403A.3 Heat pump supplementary heat (Mandatory). Heat pumps having supplementary electric -resistance heat shall have controls
that, except during defrost, prevent supplemental heat operation when the heat pump compressor can meet the heating load.
❑ R403.3.2 Sealing (Mandatory) All ducts, air handlers, filter boxes and building cavities that form the primary air containment passageways
for air distribution systems shalt be considered ducts or plenum chambers, shall be constructed and sealed in accordance with Section
C403.2.9.2 of the Commercial Provisions of this code and shall be shown to meet duct tightness criteria below.
Duct tightness shall be verified by testing In accordance with ANSIIRESNETIICC 380 by eltherindividuals as defined in Section 553993(5) or
(7), Florida Statutes, or Individuals Hcensed.as set -forth in Section 489.105(3)(f), (g) or (i), Florida Statutes, to be "substantialiy leak free` in
accordance with Section R403.3.3.
❑ R403.3.2.1 Sealed air handier. Air handlers shall have a manufacturer's designation for an air leakage of.no more than.2 percent
of the design airflow rate when tested in accordance with ASHME.193.
❑ R403.3.3,Duct testing (Mandatory). -'Dues shall be pressure tested to determine air leakage by one of the following rnethods:
1. Rough -in test: Total leakage shall be measured with a pressure differential of.0.1 inch w.g. (25 Pa) across the system, includingthe
nianiifacturer!s air handler enclosure if installed at the time of the test. AH registers shall be taped or otherwise seated during the: test. "
2. Postconstruction.test: Total leakage shall be measured with a pressure differential. of 0.1 inch w.g. (26 Pa) across the
entire system, including the manufacturer's air handler. enclosure. Registers shall be taped or otherwise sealed during the
test.
Exceptions:
1. A duct air leakage test shall not be required where the ducts and air handlers are located entirety within the building
theme[ envelope.
2. Duct testing is not mandatory for buildings complying by Section 405 of this code.
A written report of the results of the test shall be signed ioy the patty conducting the test.and provided to the Dods official,
❑ R403.3.5 Building cavities (Mandatory). Building framing cavities shall not be used as ducts or plenums.
❑ R403.4 Mechanical system piping. Insulation (Mandatory). Mechanical system piping capable of carrying fluids above 105°F (41QC)
or below 55°F (13'C) shall be insulated to a minimum of R-3.
1-7 R403.4.1 Protection of piping insulation. Piping Insulation exposed to weather shall be protected from damage, including that
caused by sunlight, moisture, equipment maintenance and wind, and she provide shielding from solar radiation that can cause
degradation of the material. Adhesive tape shall not be permitted.
❑ R403.5.1 Heated water circulation and temperature maintenance systems (Mandatory). Heated water circulation systems shall be in
accordance with Section R403.5.1.1. Heat trace temperature maintenance systems shait be In accordance with Section R403.5.1.2.
Automatic controls, temperature sensors and pumps shall be accessible. Manual controls shalt be readily accessible.
R403.5.1.1 Circulation systems. Heated water circulation systems shall be provided with a circulation pump. The system return
❑ pipe shall be a dedicated return pipe or a cold water supply pipe: Gravity and thermosiphon circulation systems shall be prohibited.
Controls for circulating hot water system pumps shall start the pump based on the identification of a demand`for hot water within the
occupancy. The controls shall automatically turn off the pump when the water in the circulation loop is at the desired. temperature and
when there is no demand for hot water.
❑ R403.5.1.2 Heat trace systems, Electric heat trace systems shall comply with IEEE 515.1 or UL 515. Controls for such systems
shall automatically adjust the energy input to the heat tracingto maintain the desired water temperature in the piping in accordance
With the times when heated water is used in the occupancy.
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MANDATORY REQUIREMENTS - (Continued)
R403.5.5 Heat traps (Mandatoryj. Storage water heaters not equipped with integral heat traps and having vertical pipe risers shall have
heat traps installed on both the inlets and outlets. External heat traps shall consist of either a Commercially available heat trap or a
downward and upward bend of at least 3''A inches (89 mm) in the hot water distribution line and cold water line located as close as possible
to the storage tank.
R403.5.6 Water heater efficiencies (Mandatory).
R403.5.6.1.1 Automatic controls. Service water -heating systems shall be equipped with automatic temperature controls capable
of adjustment from the lowest to the highest -acceptable temperature settings for the intended use. The minimum temperature
setting range shall be from 100"F to 140°F (38"C to 60°C).
R403.5.6.1.2 Shut down. A separate switch or a clearly marked; circuit breaker shall be provided to permit the power supplied to
electric service systems to be turned off..A separate valve shall be provided to permit the energy supplied to the main burner(Q of
combustion types of service water -heating systems to be turned off.
R403.5.6.2 Water -heating equipment. Water -heating equipment installed in residential units shall meet the minimum efficiencies of
Table C404.2 in Chapter 4 of the Florida Building Code, Energy 6onservation, Commercial Provisions, for the type of equipment installed.
Equipment used to provide heating functions as part of a combination system shall satisfy all stated requirements for the appropriate
water -heating category. Solar water heaters shall meet the criteria of Section R403.5.6.2.1.
R403.5.6.2.1 Solar water -heating systems. Solar systems for domestic hot water production are rated by the annual solar energy
factor of the system. The solar energy factor of system shall be determined from the Florida Solar Energy Center Directory of
Certified Solar Systems. Solar collectors shall be tested in accordance_ with ISO Standard 9806, Test Methods for SolarColiectors,
and SRCC Standard TM-1, Solar Domestic Hot Water System and Component Test Protocol. Collectors in Installed solar
water -heating systems should meet the following criteria:
1. Be installed with atilt angle between 10 degrees and 40 degrees ofthe horizontal; and
2. Be installed at an orientation within 45 degrees of trite south.
Q R403:6 Mechanical ventilation (Mandatary). The building shall be provided with ventilation that meets the requirements of the
Florida Building Code, Residential, or Florida Building Code, Mechanical, as applicable, or with other approved means of ventilation
including: Natural, Infiltration or Mechanical means. Outdoor air intakes and exhausts shall have automatic or gravity dampers that
close when the ventilation system is not operating.
R403.6.1 Whole -house mechanical ventilation system fan efficacy. When installed to function as a whole house.�riiechanical
ventilation system, fans shall meet the efficacy requirements of Table R403.6.1.
Exception: Where;whole-house mechanical ventilation fans are integral to tested and Ilisted.IJVAC equipment, they shall be
powered by an electronically commutated motor.
R403.6.2 Ventilation air: Residential buildings designed to be operated at a positive indoor pressure or for mechanical ventilation
,. shall meet the following criteria:
1. The design air change per,hour,minimums for residential buildings in ASHRAE 62.2, Ventilation for'Accepiable
Indoor Air Quality, shall be the maximum rates allowed for residential applications.
2. No ventilation or air-conditioning system make-up air shall be provided to conditioned space from attics,
crawlspaces, attached enclosed garages or outdoor spaces adjadent to swimming pools or spas.
3• if ventilation alris, drawn from enclosed space(s), then the wails of the spsee(s) from which air is drawn shall be
insulated to a minimum of R 11 and.the ceiling shall be insulated to a minimum of 11-19, space permitting, or R-10
otherwise.
R403.7 Heating and cooling equipment (Mandatory),
R403.7-1 Equipment sizing. Heating and cooling equipment shall be sized in accordance with ACCA Manual S based on the
ri equipment loads calculated in accordance with _ACCA Manual J or other.approved heating and tooting calculation methodologies,
based on building loads for the.directional orientation of the building. The manufacturer and model number of the outdoor and
Indoor units (if split system) shall be submitted along with the gensible and total cooling capacities at the design conditions
described in Section R302.1. This Code does not allow designor safety factors, provisions for future expansion or other factors that
affect equipment sizing. System sizing calculations shall not include loads created by local intermittent mechanical ventilatfort such
as standard kitchen and bathroom exhaust systems. New or replacement heating and cooing equipment shall have an efficiency
rating equal to or greater than the minimum required by federal law for the geographic location where the equipment -is installed_.
TABLE R403.6.1
WHOLE -HOUSE M15CHANI6AL VENTILATION SYSTEM FAN EFFICACY
FAN LOCATION
AIRFLOW RATE MINIMUM
(CFM)
MINIMUM EFFICACY a
(CFMNVATT)
AIRFLOW RATE MA3UMU
(CFM)
Range hoods
Any
2.8 cfmtwatt
Any
In -line fan
Any
2.8 cfmAvatt
Any
Bathroom, utility room
10
1.4 cfm/watt
<90
Bathroom, utility room
90
2.8 cfmtwatt
Any
ForSI: 1 cfm = 28.3 Umin. a. When tested in accordance with HVI Standard 916
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MANDATORY REQUIREMENTS - (Continued)
R403.7.1.1 Cooling equipment capacity. Cooling only equipment shall be selected so that its total capacity is not less
than the calculated total load but not more than 1.15 times greater than the total load calculated according to the procedure selected 'in
Section 403.7, or the closest available size provided by the manufacturer's product lines. The corresponding latent capacity of the
equipment shall not be less than the calculated. latent load.
The published value for AHRI total capacity is a nominal, rating -test value and shall not be used for equipment sizing. Manufacturer's
expanded performance data shall be. used to select cooling -only equipment. This selection shall be based on the outdoor design dry-bulb
temperature forthe load calcuiation (or entering water temperature for watpr-source.equipment), the blower CFM provided by the expanded
performance data, the design value for entering wet -bulb temperature andthe design value for entering dry-bulb temperature.
Design values for entering wet -bulb and dry-bulb temperatures shall be for`the indoor dry bulb and relative humidity used for the load
calculation and shall be adjusted for return side gains if the return duct(s) is installed In an unconditioned space.
Exceptions:
1. Attached single- and multiple -family residential equipment sizing may be selected so that its cooling capacity is less than the
calculated total sensible load but not less than 80 perceht of that load.
2.
When signed and sealed.by a Florida -registered enginedr, in attached single- and multiple -family units, the capacity of
equipment may be sized in accordance with good design practice.
R403.7.1.2 Heating equipment capacity.
R403.7.1.2.1 beat pumps:. Heat pump sizing shall be based on the cooling requirements as calculated according to Section
R403.7.1.1, and the heat pump total cooling capacity shall not be more than 1.15 times greaterthan the design cooling toad even if.
the design heating load is 1.15 titres greater than the design cooling load.
❑ R403.7.1.2.2 Electric resistance furnaces. Electric resistance furnaces shall be sized within 4 kW of the design
requirements calculated according to the
.procedure selected in Section R403.7.1.
❑ R403.7.1.2.3 Fossil fuel heating equipment. The capacity of fossil fuel heating equipmentwith natural draft atmospheric bumers
shall not be less than the design load calculated in accordance with Section 12403.7.1.
R403.7,1.3 Extra capacltj required for special occasions.. Residences requiring excess cooling be heating equipment capacity' oh an
intermittent basis, .such as anficipated additional loads caused by major ent6dainmenteventa,.:shall have -equipment sized or controlled to'
prevent continuous'space codling or heating within that space by one or rare of the following Options:
1'. A separate'cooling-or heating system is utilized to,proyide cooling of tieating'to the major entertainment areas.
2. A variable. capacity system sized for optimum performance during base joad, periods is utilized.
R403.8 Systems serving multiple dwelling. units (Mandatory). Systems serving multiple dwelling units shall comply with Sections
❑ C403 and C404 of the IECC—Commercial Provisions in lieu of Section P403.
R403.9 Snow melt and ice system controls (Mandatory) Snow- and icn rnetting systems, supplied through energy service to the building;
shall Include automatic controls capable of shutting off the system when the pavement temperature is above 50* (10"0), and no
precipitation is falling and an automatic or manual control that will allow shutoff when the outdoor temperature is above 40°F (4,11*%
❑ R403.10 Pools and permanent spa energy consumption (Mandatory). The energy consumption of pools and permanent spas
shall be in accordance with Sections R403.10.1 through R403.10.5.
❑ R403.10.1 Heaters. The electric power to heaters shill be controlled by a readily accessible on-offswitch that is an
integral part of the heater mounted on the exterior of the heater, br external to and within 3 feet (914 mm) of the heater. Operation
of such switch shall not change the setting of the heater thermostat. Such switches shall be in addition to a circuit breaker for the
power to the heater. Gas=fired heaters shall not be equipped with. C0* ntinuously burning Ignition pilots.
❑ R403.10.2 Time switches. Time switches or other control methods That can automatically turn off and on according to a preset schedule
shall be installed for heaters and pump motors. Heaters and pump motors that have built-in time switches shall be in compliance with this
section.
Exceptions:
1. Where publichealth standards require 24-hour pump operation.
2. Pumps that operate solar -and waste -heat -recovery pool heating systems.
3. Where pumps are powered. exclusively from on -site renewable generation.
R403.10.3 Covers. Outdoor. heated swimming pools andoutdoor parmanent spas shall be equipped with a vapor -retardant cover on or at
❑ the water surface or a liquid paver or other means proven to reduce heat loss,
Exception: Where more than 70 percent of the energy1for heating, computed over an operation season, is from site -recovered.
energy, such as from a heat pump or solar energy sourc6, covers or other vapor=retardant means shall'not be required.
R403.10.4 Gas- and olt<fired pool and spa heaters. All gas- and oil -fired pool and spa heaters shall have a minimum thermal
❑ efficiency of 82 percent for heaters manufactured on or after April 16� 2013, when tested in accordance with ANSI Z 21.56. Pool
heaters fired by natural or LP' gas shall not have continuously buming pilot lights.
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1 I R403.10.5 Heat pump pool heaters. Heat pump pool heaters shall have a minimum COP of 4.0 when tested In accordance
LJ with AHRI 1160 liable 2, Standard Rating Conditions -Low Air Temperature. A test report from an Independent laboratory is
required to verify procedure compliance. Geothermal swimming pool, heat pumps are not required to meet this standard.
R403.11 Portable spas (Mandatory)he energy consumption of electric -powered portable spas shall be controlled by the
requirements ofAPSP-14.
SECTION R404
ELECTRICAL ROWER AND LIGHTING SYSTEMS
LJ R404.1 Lighting equipment (Mandatory). Not less than 75 percent of the lamps in permanently installed lighting fixtures shall be
high -efficacy lamps or not less than 75 percent of the permanently installed lighting fixtures shall contain only high -efficacy lamps.
Exception: tow -voltage lighting.
R404.1.1 Lighting equipment (Mandatory). Fuel gas lighting systems.shall not have continuously burning pilot lights.
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