John Wood Commercial Storage Tanks User Manual

80G - 120G INSULATED STORAGE TANK

PART NO. 62607 REV. A (03-08)

INSTALLATION AND OPERATING INSTRUCTIONS

Read these instructions

thoroughly before starting

Please retain these instructions in
a safe location for future reference.

NOTE: These instructions apply only to

this storage tank unit. The water
heating source or other
components of the system
should be installed in
accordance with their
instructions, provided by their
manufacturer.

FOR YOUR SAFETY:

*Do not store or use gasoline or other
flammable vapours or liquids in the vicinity
of this or any other appliance.
*Installation and service must be
performed by a qualified installer, service
agency, gas supplier, or electric utility.

WARNING: Improper installation,

adjustment, alteration, service, or
maintenance can cause injury or property
damage. Refer to this manual. For
assistance or additional information,
consult a qualified installer, service
agency, gas/oil supplier, or the electric
utility.

WARNING: If the information in these

instructions is not followed exactly, a fire,
explosion, or water damage may result
causing property damage, personal injury
or death.

FIGURE 1.

Aquastat
Connection
3/4 NPT

Circulating
Connections
2 NPT

Drain Valve
3/4 NPT

Drain pan
(Piped to Drain
as Illustrated)

Anodes 119 GAL & 80 GAL

Hot Outlet 2 NPT

Anode 119 GAL

Temperature and
Pressure Relief Valve
Connections Valve
1” NPT Relief
Not Provided

Relief Valve
Discharge
Line to
Suitable
Open Drain
Terminate 6”
Above Drain

Hand Hole
Clean Out

6”

Floor Drain

IMPORTANT CONSUMER NOTICE

These instructions have been written for the proper
installation, safe operation and maintenance of this storage
tank unit.

It is your responsibility to ensure that your insulated storage
tank is properly installed and cared for. FAILURE TO
FOLLOW THE INSTRUCTIONS IN THIS MANUAL MAY
RESULT IN SERIOUS BODILY INJURY AND/OR
PROPERTY DAMAGE. THOROUGHLY READ ALL
INSTRUCTIONS BEFORE YOU ATTEMPT TO INSTALL
OR OPERATE THIS UNIT.

Installation and service require trade knowledge in the area
of plumbing, electricity, venting, air supply, and gas supply.
Installation is required by a qualified tradesperson in
accordance with National/Local Codes.

The manufacturer of this insulated storage tank cannot be
held liable for those damages caused by improper
installation, sizing, or failure to comply with these
instructions. PROTECT YOUR WARRANTY: Regularly
maintain your unit as detailed in the service and
maintenance section of this manual.

MEETS OR EXCEEDS ASHRAE 90.1b 1999.

PART NO. 71768 REV. A (05-03)

INSTALLATION CODE REQUIREMENTS

CANADIAN INSTALLATIONS

In addition to the installation instructions found in this
manual, the heater shall be installed in accordance with the
latest edition of CSA B149 installation codes and /or any
local codes. These shall be carefully followed in all cases.
Authorities having jurisdiction shall be consulted before
installations are made.
All electrical connections shall be in accordance with the
latest edition of the Canadian Electrical Code CSA C22-1
Part 1.

U.S. INSTALLATIONS

In addition to the installation instructions found in this
manual, the heater shall be installed in accordance with the
latest edition of the National Fuel Code ANSI Z223-1 (NFPA

54) and/ or any local codes. These shall be carefully
followed in all cases. Authorities having jurisdiction shall be
consulted before installations are made.

IMPORTANT: All supply equipment, installation,

approvals, permits, inspections, etc. are the responsibility of
the owner of this storage tank unit. Consult your local
authorities for regulations specific to your area.

RELIEF VALVES ( T&P )

All heaters must be installed with a proper temperature and
pressure relief valve. These valves must be certified as
meeting the requirements for Relief Valves and Automatic
Gas Shut-Off Devices for Hot Water Supply Systems, ANSI
Z21-22 in the United States. When in Canada, the Standard
for Temperature, Pressure, Temperature and Pressure
Relief and Vacuum Relief CAN 1-4.4, is required.

BACKFLOW PREVENTION

Certain jurisdictions may require the installation of a
backflow device (e.g. Check Valve) in the water supply line.
Such a device will require the use of a system expansion tank
of adequate size to control the thermal expansion generated
during the heating cycle. Consult your water supplier or local
plumbing authority.
IMPORTANT: The supply water meter may have a built-in
check valve device. Contact your local water authority.

GASOLINE OR OTHER FLAMMABLE, COMBUSTIBLE
OR CORROSIVE VAPOURS OR LIQUIDS IN THE
VICINITY OF THIS HEATER OR ANY OTHER
APPLIANCE.

-Hot water leaving this appliance can cause severe burns
due to scalding. The hazard is increased for young children,
the elderly, or the disabled where water temperatures
exceed 125 F (52 C).
Use anti-scald valves in the hot water system to reduce the
risk of scalding at points of use such as lavatories, sinks, and
bathing facilities. Such precautions must be followed when
this unit is operated in combination with dishwashing or
space heating applications.

-If this storage tank has been exposed to flooding, freezing,
fire, or any unusual condition, do not put it into operation until
it has been inspected and approved by a qualified
professional. THESE CONDITIONS CAN RESULT IN
UNSEEN INTERNAL DAMAGE and are not subject to
warranty coverage.

-Exposure to airborne chemicals can cause severe corrosion
to the unit. Air containing vapours from cleaning solvents,
pool chemicals, refrigerator or air conditioning refrigerants,
laundry detergents or bleaches, waxes, spray can
propellants, dry cleaning, photo processing liquids, calcium
and sodium chloride (softener salt) or other process
chemicals are typical compounds which are potentially
corrosive.
Products of this type should not be stored near the unit.

-HYDROGEN GAS CAN BE PRODUCED IN A HOT WATER
SYSTEM. THIS CAN BE PROBLEMATIC IN SYSTEMS
WITH LONG STANDBY PERIODS. HYDROGEN GAS IS
EXTREMELY FLAMMABLE.
To reduce the risk of injury under these conditions, it is
recommended that the hot water faucet be opened for
several minutes at the kitchen sink before using any
electrical appliance that is connected to the hot water
system. If hydrogen is present, there will probably be an
unusual sound such as air escaping through the pipe as the
water begins to flow. THERE SHOULD BE NO SMOKING,
OR OPEN FLAME NEAR THE FAUCET AT THE TIME THAT
IT IS OPEN.

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SAFETY WARNINGS

-Water Heaters are heat producing appliances. To avoid
damage or injury, no materials shall be stored against the
heater and provision shall be made to prevent unauthorized
contact (e.g. children).

FOR YOUR SAFETY, DO NOT STORE OR USE

WARNING: THE WATER HEATING SOURCE, PIPING,

AND COMPONENTS CONNECTED TO THE STORAGE
TANK MUST BE SUITABLE FOR POTABLE WATER USE.
TOXIC CHEMICALS SUCH AS USED FOR BOILER
TREATMENT MUST NOT BE INTRODUCED INTO THE
TANK. ONLY POTABLE WATER IS ALLOWED TO ENTER

THE INSULATED STORAGE TANK UNIT.