Texas Administrative Code
Title 16 - ECONOMIC REGULATION
Part 4 - TEXAS DEPARTMENT OF LICENSING AND REGULATION
Chapter 75 - AIR CONDITIONING AND REFRIGERATION
Section 75.100 - Technical Requirements
Universal Citation: 16 TX Admin Code ยง 75.100
Current through Reg. 49, No. 12; March 22, 2024
(a) Electrical Connections.
(1) On new construction of
environmental air conditioning, commercial refrigeration, and process cooling
or heating systems, licensees may connect the appliance to the electrical line
or disconnect that is provided for that purpose.
(2) Licensees may replace and reconnect
environmental air conditioning, commercial refrigeration, process cooling or
heating systems, or component parts of the same or lesser amperage. On
replacement environmental air conditioning, commercial refrigeration, process
cooling or heating systems where the electrical disconnect has not been
installed and is required by the applicable National Electrical Code, the
licensee may install a disconnect and reconnect the system.
(3) Control wiring of 50 volts or less may be
installed and serviced by a licensee. Control wiring for commercial
refrigeration equipment of any voltage may be installed by a licensee with the
commercial refrigeration endorsement as long as the control wiring is on the
equipment side of the disconnect installed for that purpose.
(4) All electrical work shall be performed in
accordance with standards at least as strict as that established by the
applicable National Electrical Code and the International Residential Code,
where applicable.
(b) Piping.
(1) Fuel gas piping for new or
replaced environmental air conditioning, commercial refrigeration, or process
cooling or heating systems may be installed by a licensee. Fuel gas piping by a
licensee is limited to the portion of piping between the appliance and the
existing piping system, connected at an existing shut-off valve for such use.
Existing piping systems, stops, or shut-off valves shall not be altered by a
licensee.
(2) Drain piping
associated with environmental air conditioning, commercial refrigeration, or
process cooling or heating systems shall be installed by a licensee if it
terminates outside the building. If the piping terminates inside the building,
a licensee may make the connection if the connection is on the inlet side of a
properly installed trap. Such drain piping shall be installed in accordance
with applicable plumbing and building codes.
(3) Other piping, fittings, valves and controls associated with
environmental air conditioning, commercial refrigeration, or process cooling or
heating systems shall be installed by a licensee.
(c) Duct cleaning.
(1) Duct cleaning and air quality testing,
including biomedical testing, may be performed by a person or entity that does
not hold a contractor license under Texas Occupations Code Chapter 1302 if:
(A) the task is limited to the air
distribution system, from the supply plenum to the supply grilles of the unit
and from the return air grill to the air handler intake of the unit;
(B) no cuts are made to ducts or plenums;
(C) no changes are made to
electrical connections; and
(D) the
only disassembly of any part of the system is opening or removal of return and
supply air grilles, or registers that are removable without cutting or removing
any other part of the system.
(2) Biomedical testing may be performed by a
person or entity that does not hold a contractor license under Texas
Occupations Code, Chapter 1302.
(3)
Biomedical remediation requires a contractor license under Texas Occupations
Code, Chapter 1302.
(d) Process Cooling and Heating.
(1) Process
cooling and heating work does not include cryogenic work.
(2) Process cooling and heating work is
limited to work performed on piping and equipment in the primary closed loop
portions of processing systems containing a primary process medium. Once a
primary closed loop process system has been deactivated and rendered inert by a
licensee, a person or entity that does not hold a contractor license under
Texas Occupations Code, Chapter 1302 may perform maintenance, service and
repairs on the secondary open loop components including piping, heat
exchangers, vessels, cooling towers, sump pumps, motors, and fans.
(e) Standards.
(1) The standard for the practice of air
conditioning and refrigeration in a municipality is the code the municipality
adopted by ordinance that is consistent with the standards established under
the Act and this chapter.
(2) The
standard for the practice of air conditioning and refrigeration in an area
where no code has been adopted is:
(A) The
applicable edition of the International Residential Code for one- and
two-family dwellings, and multiple single family dwellings (townhouses) not
more than three stories in height with separate means of egress, together with
the applicable editions of the International Fuel Gas Code and the
International Energy Conservation Code;
(B) For commercial work and any multiple
family residential work that exceeds the limitations of subparagraph (A), the
contractor performing the work may choose between:
(i) the applicable edition of the Uniform
Mechanical Code; or
(ii) the
applicable editions of the International Mechanical Code, International Fuel
Gas Code and International Energy Conservation Code.
(f) System Testing and Balancing.
(1) System
testing may be performed by a person or entity that does not hold a contractor
license under Texas Occupations Code, Chapter 1302.
(2) System balancing requires a contractor
license under Texas Occupations Code, Chapter 1302.
Disclaimer: These regulations may not be the most recent version. Texas may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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