John Wood Direct Vent - Manuel (Page 30)

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MAINTENANCE
FOR YOUR SAFETY AND SATISFACTORY OPERATION,
IT IS RECOMMENDED THAT THIS HEATER BE
CHECKED ONCE A YEAR BY A COMPETENT SERVICE
PERSON.
USERS OF THIS WATER HEATER SHOULD BE AWARE
THAT GAS COMPONENTS WEAR OUT OVER A PERIOD
OF TIME. THE GAS CARRYING COMPONENTS OF
THIS WATER HEATER SHOULD BE INSPECTED FOR
PROPER OPERATION PERIODICALLY BY A QUALIFIED
SERVICE TECHNICIAN.
HOUSEKEEPING
• Do not obstruct combustion air
openings at the vent termination
hood.
• Do not use or store flammable
vapour products such as gasoline,
solvents or adhesives in the same
room or area near water heater,
the vent termination hood, or other
appliance.
• Can cause serious injury or death.
Fire and Explosion Hazard
DANGER
INSTALLED IN SUITABLE AREA:
To ensure sufficient ventilation and combustion air
supply, proper clearances from the water heater must
be maintained. See “Locating The New Water Heater”
section. Combustible materials such as clothing, cleaning
materials, or fl ammable liquids, etc. must not be placed
against or adjacent to the water heater which can cause
a fi re.
FLOOD DAMAGE
Flood damage to a water heater may not be readily visible
or immediately detectable. However, over a period of time
a fl ooded water heater will create dangerous conditions
which can cause DEATH, SERIOUS BODILY INJURY,
OR PROPERTY DAMAGE. Contact a qualifi ed installer or
service agency to replace a fl ooded water heater. Do not
attempt to repair the unit! It must be replaced!
VENTING SYSTEM INSPECTION
At least once a year a visual inspection should be made
of the venting system. You should look for:
1. Obstructions which could cause improper venting.
The combustion and ventilation air fl ow must not be
obstructed.
2. Damage or deterioration which could cause improper
venting or leakage of combustion products.
Be sure the vent piping is properly connected to prevent
escape of dangerous fl ue gasses which could cause
deadly asphyxiation.
Obstructions and deteriorated vent systems may present
serious health risk or asphyxiation.
Chemical vapour corrosion of the fl ue and vent system
may occur if air for combustion contains certain chemical
vapours. Spray can propellants, cleaning solvents,
refrigerator and air conditioner refrigerants, swimming pool
chemicals, calcium and sodium chloride, waxes, bleach
and process chemicals are typical compounds which are
potentially corrosive.
If after inspection of the vent system you found sooting or
deterioration, something is wrong. Call the local gas utility
to correct the problem and clean or replace the fl ue and
venting before resuming operation of the water heater.
Breathing carbon monoxide can cause brain damage or death.
Always read and understand instruction manual.
• Flue gases may escape if vent pipe is not
connected.
• Be alert for obstructed, sooted or deteriorated
vent system to avoid serious injury or death.
• Do not store corrosive chemicals in vicinity of
the water heater or the vent termination hood.
• Chemical corrosion of flue and vent system
can cause serious injury or death.
Breathing Hazard - Carbon Monoxide Gas
WARNING
PILOT AND MAIN BURNER
At least once a year a visual inspection should be made
of the main burner and the pilot assembly for proper fl ame
characteristics. This can be done by removing the Outer
Door and viewing the main burner operation through the
Viewport on the Inner Door (see Figure 37). The main
burner should provide complete combustion of gas, ignite
rapidly, give reasonably quiet operation, and cause no
excessive fl ame lifting from the burner ports. If the proper
fl ame characteristics are not evident (see Figure 31),
make sure that the fl ow of combustion and ventilation
air is not blocked in the venting system. You should also
check for sooting. Soot is not normal and will impair proper
combustion.
Soot build-up indicates a problem that requires correction
before further use. Turn “OFF” gas to water heater and
leave off until repairs are made, because failure to correct
the cause of the sooting can result in a fi re causing death,
serious injury, or property damage.
If proper fl ame characteristics are not evident, call your
service agency to remove and clean the burner and correct
any operational problem.