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GENERAL MAINTENANCE
The gas control valve pictured in this manual
is equipped with a single-use type automatic high
temperature cutoff. Should the temperature of the
water exceed 195
o
F (91
cutoff will automatically shut off the gas supply to the
water heater. If this situation occurs, the gas control
valve must be replaced immediately by a qualified
service technician.
WARNING
Should overheating occur or the gas supply fail to
shut off, close the gas supply manual shut-off valve.
Failure to follow this instruction can result in property
damage, personal injury, or death.
Out of Fuel
If your water heater should run out of gas, proceed
as follows:
1) Unplug the power cord from the wall socket.
2) Close the gas supply manual shut-off valve.
3) Once the gas supply has been re-established,
proceed to the Lighting Instructions .
Housekeeping
Keep the area around the water heater clean and free of
dust, lint and dirt. Verify the combustion air intake holes,
at the bottom of the water heater, at least once every six
(6) months and vacuum up any dirt, as required. Make
sure that all of the minimum clearances to combustible
materials are being maintained.
WARNING
DO NOT store or use gasoline or other flammable
vapours and liquids around the water heater.
DO NOT block or, in any way, restrict the flow of
fresh air through the combustion air intake holes at
the bottom of the water heater.
DO NOT put or store any objects on the top of the
water heater.
Failure to follow these instructions can result in
property damage, personal injury, or death.
Safety System
This water heater is equipped with a safety system
that will shut it down in the event of a flammable
vapour incident. It is a safety feature that may prevent
property damage, personal injury, or death.
The safety system is comprised of two parts, a flam-
mable vapour (FV) sensor and the flame arrestor.
The FV sensor is located on the front left bottom of
the exterior casing of the water heater. The FV sen-
sor is protected from shock and contaminants by a
robust plastic cover. The function of the FV sensor is
to detect the presence of flammable vapours before
they enter the combustion chamber and ignite. If
o
C), the high temperature
the FV sensor detects the presence of flammable
vapours while the water heater is operating, the gas
control will switch to lock-out mode and the water
heater will shut down. If the water heater is not oper-
ating when the flammable vapours are detected, the
control will switch to lock-out mode and prevent the
water heater from lighting.
It is unlikely that there will ever be a flammable
vapour ignition in the combustion chamber as the
flammable vapours will have been detected by the
FV sensor. However, if flammable vapours manage
to enter the combustion chamber during main burner
operation and ignite, the flame arrestor technology
will prevent ignition of the vapours outside the
combustion chamber.
After a flammable vapour incident has occurred
and the flammable vapours have dissipated, the FV
sensor is designed to automatically reset itself. The
Intelli-Vent gas control, however, will have gone into
lock-out mode and will need to be manually reset. A
qualified service technician must be called to deter-
mine if flammable vapours entered the combustion
chamber and ignited. In most instances, there will
not have been ignition of flammable vapours inside
the combustion chamber because the FV sensor
will have detected these vapours and shut down the
water heater. In this case, the Intelli-Vent
can be reset and the water heater may resume nor-
mal operation. On the other hand, if the flammable
vapours ignited inside the combustion chamber, the
water heater may need to be replaced. The techni-
cian will be able to determine whether or not the
water heater needs to be replaced based on the
amount of flammable vapours that entered the com-
bustion chamber and the damage to the water heater
from the resulting fire.
Condensation
As moisture from the products of combustion comes
into contact with the cold surface of the inner tank, it
may condense. This situation will usually occur:
1) When the water heater is filled with cold water for
the first time.
2) If the water heater has been undersized.
3) When large amounts of hot water are drawn from
the water heater in a short period of time and the
refill water is very cold.
Due to the high-efficiency rating of this gas-fired
water heater, it may produce more condensation than
older models. Condensation forming on the flue tube
will drop on the burner making a "sizzling" sound. This
condition is not uncommon and must never be misin-
terpreted as a leaking tank. It will disappear once the
water becomes heated.
20
®
gas control
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