Code of Massachusetts Regulations › 225 CMR - DEPARTMENT OF ENERGY RESOURCES › Title 225 CMR 23.00 - Massachusetts Front-end Amendments to the International Energy Conservation Code 2021 Massachusetts Stretch Energy Code - 2023 Commercial Amendments to IECC2021 › Chapter 2 - [CE] DEFINITIONS › Section C202 - GENERAL DEFINITIONS

Current through Register 1525, July 5, 2024
C202
Add the following
				  definitions
.
ALL-ELECTRIC BUILDING
. A building with no
				  on-site
combustion equipment
for fossil fuel use or capacity
				  for including fossil fuel use in space heating, water heating, cooking, or
				  drying appliances.
AUTOMATIC LOAD MANAGEMENT SYSTEMS (ALMS)
. A
				  control system that allows multiple connected
electric vehicle supply
				  equipment
(
EVSE)
to share a circuit or panel and
				  automatically manage power at each charger, reducing the total connected
				  electrical capacity of all
EVSE
.
CLASS 3 EXHAUST
. Exhaust meeting the definition
				  of Class 3 air in ASHRAE/ASHE Standard 62.1-2019, including air with
				  significant contaminant concentration, significant sensory-irritation
				  intensity, or offensive odor. The Class 3 Exhaust system must be capable of
				  reducing exhaust and makeup airflow rates to 50% of the zone design values or
				  the minimum required to maintain pressurization relationship
				  requirements.
CLASS 4 EXHAUST
. Exhaust meeting the definition
				  of Class 4 air in ASHRAE/ASHE Standard 62.1-2019, including laboratory fume
				  hood exhaust, exhaust where energy recovery is not allowed by ASHRAE/ASHE
				  Standard 170 for use in energy recovery systems with leakage potential, and
				  systems exhausting toxic, flammable, paint or corrosive fumes or dust. The
				  Class 4 Exhaust system must be capable of reducing exhaust and makeup airflow
				  rates to 50% of the zone design values or the minimum required to maintain
				  pressurization relationship requirements. Excludes
exempt
				  exhaust
.
CLEAN BIOMASS HEATING SYSTEM
. Wood-pellet fired
				  central boilers and furnaces with less than 3 million Btu/hour rated heat
				  input, where the equipment has a thermal efficiency rating of 85% (higher
				  heating value) or greater; and a particulate matter emissions rating of no more
				  than 0.08 lb. PM2.5/MMBtu heat output, or wood chip
				  fired central boilers and furnaces with less than three million Btu/hour rated
				  heat input, where the equipment has a thermal efficiency rating of 80% or
				  greater and a particulate matter emissions rating of no more than 0.10 lb.
				  PM2.5/MMBtu heat output.
COMBUSTION EQUIPMENT
. Any
equipment
or
appliance
used for space
				  heating,
service water heating
, cooking, clothes drying and/or
				  lighting that can use
fuel gas
,
fuel oil
or
				  solid fuel and that is not a
clean biomass heating
				  system
.
DEDICATED OUTSIDE AIR SYSTEM (DOAS)
. A
				  ventilation system that supplies 100% outdoor air primarily for the purpose of
				  ventilation and that is a separate system from the zone space-conditioning
				  system.
ELECTRIC VEHICLE
. An automotive-type vehicle for
				  on-road use, such as passenger automobiles, buses, trucks, vans, neighborhood
				  electric vehicles, electric motorcycles, and the like, primarily powered by an
				  electric motor that draws current from a rechargeable storage battery, fuel
				  cell, photovoltaic array, or other source of electric current.
Informational note: defined as in 527 CMR 12 section
				  625.2.
ELECTRIC VEHICLE SUPPLY EQUIPMENT (EVSE)
. The
				  conductors, including the ungrounded, grounded, and equipment grounding
				  conductors, and the e
lectric vehicle
connectors, attachment
				  plugs, and all other fittings, devices, power outlets, or apparatus installed
				  specifically for the purpose of transferring energy between the premises wiring
				  and the
electric vehicle
.
Informational note: defined
				  as in 527 CMR 12 section 625.2
.
ELECTRIC VEHICLE READY PARKING SPACE ("EV READY
				  SPACE")
. A designated parking space which is provided with wiring and
				  electrical service sufficient to provide 240 volt AC Level 2 or equivalent EV
				  charging, as defined by Standard SAE J1772 for
EVSE
servicing
				  light duty
electric vehicles
.
ENTHALPY RECOVERY RATIO
. The ratio of change in
				  enthalpy of the entering supply airflow and the leaving supply airflow to the
				  difference in enthalpy between the entering supply airflow and the entering
				  exhaust airflow, with no adjustment to account for that portion of the
				  psychrometric change in the leaving supply airflow that is the result of
				  leakage of entering exhaust airflow rather than exchange of heat or moisture
				  between the airstreams.
EXEMPT EXHAUST
. Exhaust for which energy
				  recovery systems are prohibited by the applicable International Mechanical
				  Code.
EXHAUST SOURCE HEAT PUMP.
A type of electric
				  heat pump that utilizes ventilation exhaust air as the thermal energy
				  source.
FUEL GAS
. A natural gas, manufactured gas,
				  liquified petroleum gas or a mixture of these.
Informational note:
				  Definition of fuel gas is mirrored from 2021 IMC to be useful in defining
				  combustion equipment. It typically refers to natural gas and
				  propane
.
FUEL OIL
. Kerosene or any hydrocarbon oil having
				  a flash point not less than 100°F (38 °C).
Informational note:
				  Definition of fuel oil is mirrored from 2021 IMC to be useful in defining
				  combustion equipment. It typically refers to heating oil
				  products
.
GLAZED WALL SYSTEM
. System consisting of any
				  combination of both vision glass and/or
spandrel sections
to
				  create an above-grade wall that is designed to separate the exterior and
				  interior environments. These systems include, but are not limited to, curtain
				  walls, window walls, and storefront windows.
MIXED-FUEL BUILDING
. A
building
that contains
combustion equipment
or includes piping for such
equipment
.
OTHER EXHAUST
. Any exhaust that does not fall
				  under the categories of
Exempt Exhaust
,
Class 4
				  Exhaust
, or
Class 3 Exhaust
.
SENSIBLE ENERGY RECOVERY RATIO
. The change in
				  the dry-bulb temperature of the outdoor air supply divided by the difference
				  between the outdoor air and entering exhaust air drybulb temperatures,
				  expressed as a percentage.
SPANDREL SECTION
. The opaque portion of a
glazed wall
system typically used to conceal or obscure
				  features of the building structure or used for visual effect. A spandrel
				  section may consist of, but is not limited to, an exterior exposed cladding
				  layer (glazing or opaque material) with an interior insulated panel.
TENANT SPACE FIT OUT ZONE
. Portion of a building
				  in which only the envelope is completed, and the mechanical, lighting, and
				  other interior systems are either incomplete or partially complete at the time
				  of building permitting. Mechanical, lighting, and other interior systems may be
				  completed under either the same building permit or a different building permit
				  from the host building.
THERMAL BRIDGE
: Part of the
building
				  envelope
where otherwise uniform thermal resistance is changed by full
				  or partial penetration of the thermal insulation by materials with higher
				  thermal conductivities and/or where the interior and exterior areas of the
				  envelope are different, such as, but not limited to, parapets and
				  corners.
CLEAR FIELD
: A
thermal bridge
that is uniformly distributed throughout an assembly such that accounting for
				  the
thermal bridge
individually is impractical for
				  whole-building calculations.
LINEAR
: A
thermal bridge
that
				  is continuous in one direction of the exterior envelope.
POINT
A
thermal bridge
that is
				  discrete and countable on an individual basis for whole-building
				  calculations.