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Certified to applicable U.S.
standards for appliances using
gas or other petroleum fuel.
Certified to applicable Canadian
standards for appliances using
gas or other petroleum fuel.
Certified by the Uniform
Plumbing Code (UPC)
Certified by National Sanitation
Foundation (NSF), www.nsf.org
(indoor models must use the
NSF approved top guard)
Air-Conditioning, Heating and
Refrigeration Institute
Met the California Energy
Commission (CEC) standards
Approved by the Commonwealth
of Massachusetts (G1-0208-249)
Received New York City’s Material
and Equipment Acceptance (MEA)
(MEA 327-02-E Vol. 09)
(MEA 327-02-E Vol. 10)
(MEA 327-02-E Vol. 11)
U
P
C
The models listed in this manual have received the following certifications except where noted:
ATI-305-N GTS-305-NI GT-305-NI
ATI-305-P GTS-305-PI GT-305-PI
ATO-305-N GTS-305-NE GT-305-NE
ATO-305-P GTS-305-PE GT-305-PE
ATI-505-N GTS-505-NI GT-505-NI
ATI-505-P GTS-505-PI GT-505-PI
ATO-505-N GTS-505-NE GT-505-NE
ATO-505-P GTS-505-PE GT-505-PE
ATI-705-N GTS-705-NI GT-705-NI
ATI-705-P GTS-705-PI GT-705-PI
ATO-705-N GTS-705-NE GT-705-NE
ATO-705-P GTS-705-PE GT-705-PE
*ATI-705A-N *GTS-705-NIA *AGT-705-NI
*ATI-705A-P *GTS-705-PIA *AGT-705-PI
*ATO-705A-N *GTS-705-NEA *AGT-705-NE
*ATO-705A-P *GTS-705-PEA *AGT-705-PE
Approvals
R
Water heaters are built in accordance with the requirements of the ASME Boiler
and Pressure Vessel Code and received the Certificate of Authorization from the
National Board. The heat exchanger has the NB and the HLW stamps.
*
The California Safe Drinking Water and Toxic Enforcement Act requires the Governor of California to
publish a list of substances known to the State of California to cause cancer, birth defects, or other
repoductive harm, and requires businesses to warn of potential exposure to such substances.
WARNING: This product contains a chemical known to the State of California to cause cancer, birth
defects, or other reproductive harm.
This appliance can cause low-level exposure to some of the substances included in the Act.