use. This will reduce the risk of scalding-related injury.
The gas control valve pictured in this manual
is equipped with a single-use type automatic high tem-
perature cutoff. Should the temperature of the water
exceed 210
o
F (99
o
C), the high temperature 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.
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.
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 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 operating 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 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
®
gas control can
be reset and the water heater may resume normal
operation. On the other hand, if the flammable vapours
ignited inside the combustion chamber, the water
heater may need to be replaced. The technician will
be able to determine whether or not the water heater
needs to be replaced based on the amount of flamma-
ble vapours that entered the combustion 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.
17
GENERAL MAINTENANCE
