CSA 4.1-2001
1.1 Scope
1.1.1 This standard applies to newly produced, automatic storage water heaters
having input ratings of 75,000 Btu per hour (21 980 W) or less (see Part IV,
Definitions), hereinafter referred to as water heaters or appliances,
constructed entirely of new, unused parts and materials:
a. For use with natural gas;
b. For use with manufactured gas;
c. For use with mixed gas;
d. For use with liquefied petroleum gases;
e. For use with LP gas-air mixtures;
f. For recreational vehicle installation for use with liquefied petroleum
gases only (see 1.2.25);
g. For manufactured home (mobile home) installation convertible for use with
natural gas and liquefied petroleum gases when provision is made for the simple
conversion from one gas to the other (see 1.2.24);
h. For recreational vehicle installation convertible for use with natural gas
and liquefied petroleum gases when provision is made for the simple conversion
from one gas to the other (see 1.2.25); and
i. For use with combination potable water/space heating applications.
1.1.2 This standard also applies to water heaters incorporating heat pipe heat
exchangers (see 1.5, Heat Pipe Heat Exchangers).
1.1.3 Direct vent water heaters anticipated by this standard are essentially
balanced flue appliances with the air intake and vent outlet in close
proximity. Other designs shall be subjected to such additional tests as
believed necessary at the discretion of the testing agency.
1.1.4 Water heaters for installation in recreational vehicles shall be of the
direct vent type.
1.1.5 This standard also applies to water heaters with draft hoods which are
factory equipped with automatic vent damper devices (see Part IV, Definitions),
hereinafter referred to as vent damper devices.
1.1.6 This standard also applies to water heaters of other than the direct
vent type which are factory equipped with electrically operated or mechanically
actuated automatic flue damper devices (see Part IV, Definitions), hereinafter
referred to as flue damper devices.
1.1.7 If a value for measurement as given in this standard is followed by an
equivalent value in other units, the first stated value is to be regarded as
the specification, except as noted in 1.31.1 and 1.32.1.
1.1.8 All references to psi throughout this standard are to be considered
gauge pressures unless otherwise specified.
1.1.9 Exhibit F contains provisions that are unique to the United States.
1.1.10 Exhibit G contains provisions that are unique to Canada.
1.1.11 Special construction provisions applicable to a water heater designed
for use with an optional listed conversion kit are outlined under Exhibit h
(Optional Provisions of Listed Appliance Conversion Kits.)
1.1.12 Exhibit I (List of Reference Standards) contains a list of standards
specifically referenced in this standard, and sources from which these
reference standards may be obtained.
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* At the time of this printing, the above acts regulate the recovery efficiency
and standby loss of water heaters having a manufacturer's specified storage
capacity of not less than 20 gallons (75.7 L) nor more than 100 gallons (378.5
L) having input ratings up to and including 75,000 Btu per hour (21 980 W), and
which are not for recreational vehicle installation only. For information,
contact the U.S. Department of Energy, Conservation and Solar Applications,
Consumer Products Efficiency Branch, 20 Massachusetts Ave. N.W., Washington, Dc
20545.
SDO:
CSA
Language:
English
ICS Codes:
91.140.65
Status:
Withdrawn
Publish date:
2001-12-31
Standard Number:
CSA 4.1-2001