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Safety Warning (Flammable Vapours)
There is a risk in using fuel-burning appliances such as
water heaters. Areas that may not be suitable for water
heater installation include those where flammable liquids,
gasoline, solvents, adhesives, etc., or engine-driven equip-
ment or vehicles are stored, operated or repaired. Due to
the nature of air movement, flammable vapors can be car-
ried some distance from the point of storage. The gas-fired
water heater igniter or main burner flame can ignite these
vapors causing a flashback, fire or explosion which may
result in serious personal injury or death, as well as severe
property damage.
Safety Warning (Scalding)
Hot water produced by this appliance can cause severe
burns due to scalding. The hazard is increased for young
children, the aged or the disabled where water tempera-
tures exceed 52°C (125°F). Use tempering valves (see
Figure 11), in the hot water system to reduce the risk of
scalding at point-of-use such as lavatories, sinks and
bathing facilities. Such precautions must be followed when
this heater is operated in combination with dishwashing or
space heating applications.
Safety Warning (Carbon Monoxide)
As with all fuel burning equipment, this heater requires an
adequate supply of air for combustion and ventilation. An
insufficient air supply can result in poor combustion or the
re-circulation of the exhaust flue gases. Such a condition
can cause soot build-up or present a fire hazard, and may
result in serious bodily harm or death from asphyxiation.
MAKE SURE THE FLOW OF COMBUSTION AND VENTI-
LATION AIR IS NOT RESTRICTED.
Relief Valves (T&P)
All water heaters must be installed with a proper tempera-
ture and pressure relief valve. These valves must be certi-
fied as meeting the requirements of the “Standard for
Temperature, Pressure, Temperature and Pressure
Relief and Vacuum Relief” CSA 4.4 in Canada. In the
United States “Relief Valves and Automatic Gas Shut-Off
Devices for Hot Water Supply Systems”, ANSI Z21.22 is
applicable.
If this water heater has been exposed to flooding, freezing,
fire or any unusual condition, do not put it into operation until
it has been inspected and approved by a qualified profes-
sional. THESE CONDITIONS CAN RESULT IN UNSEEN
INTERNAL DAMAGE which is not subject to warranty cov-
erage.
Backflow Prevention
Certain jurisdictions may require the installation of a back-
flow device (e.g., check valve) in the water supply line. Such
a device will require the use of a system expansion tank of
adequate size to control the thermal expansion generated
during the heating cycle. Consult your water supplier or
local plumbing authority.
Important: The supply water meter may have a built-in
check valve device. Contact your local water authority.
WARNING
Flammable Vapours
FLAMMABLES
FIRE AND EXPLOSION HAZARD
Can result in serious injury or death
Do not store or use gasoline or other flammable vapours and liquids
in the vicinity of this or any other appliance. Storage of or use of gasoline
or other flammable vapours or liquids in the vicinity of this or any other
appliance can result in serious injury or death.
DANGER
DANGER
Carbon Monoxide Warning
• Follow all vent system requirements by
the local authorities having jurisdiction
over your installation.
• Failure to do so can result in death, explo-
sion or carbon monoxide poisoning.
CAUTION
Hydrogen gas can be produced in a hot water system
served by this heater that has not been used for a long
period of time (generally two (2) weeks or more).
Hydrogen gas is extremely flammable and can ignite
when exposed to a spark or flame. To reduce the risk of
injury under these conditions, it is recommended that the
hot water faucet be opened for several minutes at the
kitchen sink before using any electrical appliance con-
nected to the hot water system. Use caution in opening
faucets. If hydrogen is present, there will probably be an
unusual sound such as air escaping through the pipe as
the water begins to flow. There should be no smoking or
open flame near the faucet at the time it is open.
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