Operating Instructions; Temperature Regulation; Mixing Valves - John Wood POWER VENTED GAS FIRED WATER HEATER Installation And Operating Instructions Manual

OPERATING INSTRUCTIONS

CAUTION:
Read before proceeding. If you do not
follow these instructions exactly, a fi re or
explosion may result, causing property
damage, personal injury or loss of life.
This appliance is equipped with an ignition
device that automatically lights the burner.
Do not try to light manually with
a match or fl ame.

Temperature Regulation

This water heater's intended purpose is to heat water. Hot
water is needed for cleaning and sanitizing (bodies, dishes,
clothing etc.). Untempered hot water can present a scald
hazard. Depending on the time element and the people
involved (adults, children, elderly, infi rm etc.) scalding may
occur at different temperatures.
It is recommended that lower temperatures be used to avoid
the risk of scalding. It is further recommended that the water
temperature be set for the lowest temperature that will satisfy
your hot-water needs. This will also provide the most energy
effi cient operation of the water heater.
Short, repeated heating cycles caused by small water uses
can cause temperatures at the point-of-use to exceed the
thermostat setting by up to 17°C (30°F). This condition is
referred to as "stacking". If you experience this type of use you
should consider using lower temperature settings to reduce
scald hazards.
Valves for reducing the point-of-use temperature by mixing
cold and hot water are available.
DANGER
Water temperature over 52°C (125°F) can cause
severe burns instantly or death from scalds.
Children, disabled and elderly are at highest risk of
being scalded.
Feel water before bathing or showering.
Temperature limiting valves are available.

Mixing Valves

Hot water can scald: Water heaters are intended to produce
hot water. Water heated to a temperature that will satisfy space
heating, clothes washing, dish washing, and other sanitizing
needs can scald and permanently injure you upon contact.
Some people are more likely to be permanently injured by
hot water than others. These include the elderly, children, the
infi rm, and physically/mentally handicapped.
If any one using the hot water fi ts into one of these groups
or if there is a provincial or local code requiring a certain
temperature water at the hot water faucet, then you must take
special precautions. In addition to using the lowest possible
temperature setting that will satisfy your hot-water needs, a
means such as a mixing valve, should be used at the hot-water
faucets or at the water heater. Mixing valves are available at
plumbing supply or hardware stores. Follow manufacturer's
instructions for installation of these valves. Before changing
the factory settings on the thermostat, read the "Temperature
Regulation" section in this manual.
Never allow small children to use a hot-water
faucet, or to draw their own bath water. Never
leave a child or impaired person unattended
in a bathtub or shower. Scald burns can re-
sult.
Scald burns occur in under one second with
71°C (160°F) water, which the thermostat will
deliver if the temperature is set at "VERY
HOT". Lower settings of the temperature will
reduce the risk of scald and will reduce your
fuel bill.
Risk of scalding
Hot water can produce third degree burns
in 6 seconds at
in 30 seconds at
in 5 minutes at
– 23 –
WARNING
WARNING
WARNING
60°C (140°F)
54°C (130°F)
49°C (120°F)