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Document UL 1995 is offered by IHS as part of an online subscription. This subscription contains many documents on the same topic.
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UL 1995 Document Information:
Title
UL Standard for Safety Heating and Cooling Equipment
Underwriters Laboratories Inc.
Publication Date:
Feb 18, 2005
Scope:
These requirements apply to the following stationary equipment
for use in nonhazardous locations rated 7200 V or less, single- or
3-phase, and remote control assemblies for such equipment:
Heat pumps, for heating and cooling with or without factory or
field-installed electric resistance heaters, or hot water or steam
heating coils.
Air conditioners for cooling with or without factory or
field-installed electric resistance heaters, or hot water or steam
heating coils.
Cooling portion and associated components of combination heating
and cooling equipment employing gas-, oil-, or gas-oil-fired
heating means. However, the requirements for the construction and
performance of the gas-, oil-, or gas-oil-fired heating means, and
their associated components, shall conform to the particular
standards covering such heating equipment and components.
Liquid chillers and compressor-evaporator or liquid chiller
assemblies intended for use with remote condensers.
Condensing units intended for connection to a remote
nonspecified evaporator and compressor units intended for
connection to a remote nonspecified evaporator and condenser.
Add-on heat pumps for comfort heating or heating and
cooling.
Heat pump water heaters and refrigerant desuperheaters, and
packaged heat pump water heaters consisting of a heat pump water
heater and an associated storage tank.
Fan units and fan coil units for comfort heating and/or comfort
cooling.
Room fan heater units, central heating furnaces, and similar
fixed electric space heating for comfort heating.
The units referenced in Clause 1.1(g), self contained heat pumps
and air conditioners may be cord-connected if they
are for indoor use only;
are rated 250 V or less, single phase, with a marked rating of
24 A or less; and
comply with Clause 1.11.
A fan unit includes a motor-operated fan or blower and is
intended to be connected to a duct system that supplies conditioned
air for environmental heating and/or cooling. Such a unit may have
air-controlled dampers, but does not include a factory-installed
heat exchanger or any other integral heating or cooling means.
A fan coil unit includes a motor-operated fan or blower together
with a cooling coil, a heating coil, or both. The fan or blower is
intended to recirculate air, and may introduce air from outside of
the heated or cooled space. The coil may be used for refrigerant
cooling, for chilled water cooling, for hot water heating, for
steam heating, or for combinations of these functions.
A fan coil unit is intended to be piped to a remote source of
the heating and/or cooling mediums. A unit that includes an
electric resistance heater is considered to be a fan coil unit if a
water or refrigerant coil for comfort cooling and/or a water or
steam coil for comfort heating is provided in the unit.
A room fan heater unit is intended for heating only, includes a
motor-operated fan or blower, employs electric resistance heat as
the only heat source, and is intended to serve only one room or
space.
A fan coil unit or electric space heating equipment, as covered
by these requirements, may be designed for free discharge of air to
the room or may be provided with means for duct connection.
A central warm air furnace is a heating appliance that consists
of an electric heating element or elements with an air-circulating
fan or blower, is provided with appropriate integral operating and
temperature-limiting controls, and is housed in an enclosure
designed to be connected to ductwork for the distribution of the
heated air remote from the unit.
The units referenced in Clause 1.1 may consist of one or more
factory-made assemblies. If provided in more than one assembly, the
separate assemblies are to be used together, and the requirements
are based on the use of matched assemblies. These requirements
apply to assemblies designed for free discharge of air into the
conditioned space as well as those which may be provided with means
for duct connection.
These requirements do not apply to add-on heat pump systems
designed to utilize the indoor fan motor assembly of an installed
furnace where
the heat pump and furnace are intended to operate simultaneously
during heating operation except as noted in the Exception to Clause
26.14; or
the refrigerant coil is intended to be mounted upstream (return
air side) of the furnace.
These requirements apply to equipment designed to be used in
nonhazardous locations in accordance with the rules of the CSA
C22.1, ANSI/NFPA No. 70, CSA B52, ANSI/ASHRAE 15, NFPA 90A, and
NFPA 90B.
Note: Requirements for the installation of
units designed to be connected to air duct systems are also
included in codes such as the BOCA Basic National Mechanical Code,
the ICC's Standard Mechanical Code, and the ICC's Uniform
Mechanical Code.
The values given in SI (metric) units are the standard. The
values given in parentheses are for information only.
Units intended for connection to telecommunication equipment
shall have the appropriate assembly containing such circuitry meet
the CAN/CSA C22.2 No. 225 and UL 1459.
The following Clauses or Sections of CAN/CSA-C22.2 No. 0 are
superseded by the requirements of this Standard:
''General Requirements", Section 3, and ²Construction
Details², Section 4 (refer to Sections 2 through 34 of this
standard);
"Marking", Section 5 (refer to Sections 35, 36, and 37
of this standard);
"Tests", Section 6 (refer to Sections 38 through 69 of
this standard).
These requirements do not cover panel or cable type radiant
heating equipment, electric boilers, baseboard heaters, air
heaters, duct heaters, and unit coolers for refrigeration purposes,
nor any other electric heating equipment or appliances which are
covered in or as a part of separate, individual standards.
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