John Wood Takagi - 320H-520H User Manual

Page 4

SAFETY GUIDELINES
Safety Defi nitions

DANGER

Indicates an imminently hazardous situa-
tion which, if not avoided, will result in death
or serious injury.

WARNING

Indicates an imminently hazardous situa-
tion which, if not avoided, could result in
death or serious injury.

CAUTION

Indicates an imminently hazardous situa-
tion which, if not avoided, could result in
minor or moderate injury.

General

1. Follow all local codes, or in the absence of local codes,

the most recent edition of CSA B149.1 Natural Gas,
Propane Installation Code.

2. Properly ground the unit in accordance with all local

codes or in the absence of local codes, with CSA stan-
dard C22.1 Canadian Electrical Code Part 1.

3. Carefully plan where you intend

to install your 520H Water Heater.
Please ensure:

Your water heater will have
enough combustible air and
proper ventilation.
Locate your heater where water
leakage will not damage sur-
rounding areas (please refer to
pg. 5).

4. Check the rating plate for the cor-

rect GAS TYPE, GAS PRESSURE,
WATER PRESSURE and ELECTRIC RATING

*If this unit does not match your requirements, do not

install and consult with the manufacturer.

5. If any problem should occur, turn off all hot water taps

and turn off the gas. Then call a trained technician or the
Gas Company or the manufacturer.

•

WARNING

Water temperatures over 52°C (125°F)
can cause severe burns instantly or
death from scalding. The water tem-
perature is set at 49ºC (120ºF) from the
factory to minimize any scalding risk.
Before bathing or showering always
check the water temperature.
Do not store or use gasoline or other
flammables, vapors, or liquids in the
vicinity of this appliance.
Do not reverse the water and/or gas
connections as this will damage the gas
valves and can cause severe injury or
death. Follow the diagram on pg. 15
when installing your water heater:
Do not use this appliance if any part has
been in contact with or been immersed
in water. Immediately call a licensed
plumber, a licensed gas fitter, or a pro-
fessional service technician to inspect
and/or service the unit if necessary.
Do not disconnect the electrical supply if
the ambient temperature will drop below
freezing. The Freeze Prevention System
only works if the unit has electrical
power. The warranty will not be covered
if the heat exchanger is damaged due
to freezing. Refer to the section on the
Freeze Protection System on pg. 29 for
more information.

•

INSTALLATION

All gas water heaters require careful and correct installation
to ensure safe and efficient operation. This manual must be
followed exactly. Read the “Safety Guidelines" section at the
beginning of this manual.

WARNING

• Installation and service must be per-

formed by a qualified installer (for exam-
ple, a licensed plumber or gas fitter),
otherwise the warranty will be void.

• The installer (licensed professional) is

responsible for the correct installation of
your Water Heater and for compliance
with all national, state/provincial, and
local codes.

PLEASE READ THIS MANUAL CAREFULLY AND FOLLOW
ALL DIRECTIONS.

Rating plate