GSW POWER VENTED GAS FIRED WATER HEATER User Manual

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We thank you for choosing a GSW/ John Wood Water Heater.
Your satisfaction with this product is very important to us.

This gas-fired water heater has been developed to produce
potable hot water and may also be used in combination with space
heating applications. The

 “Superflue”



 

series is designed to vent

the products of combustion (flue gases) horizontally through an
exterior wall or vertically through the roof using an integrated
blower assembly and plastic piping, without the need for a
conventional chimney.

These instructions have been written for the proper installation,
safe operation and maintenance of this water heater.

It is your responsibility to ensure that your water heater 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

heater.

Installation and service require trade knowledge in the area of
plumbing, electricity, venting, air supply and gas supply. If you
lack these skills or do not understand these instructions, enlist
the help of a qualified professional.

GSW Water Heating Company, the manufacturer of this water
heater, cannot be held liable for those damages caused by
improper installation, sizing or failure to comply with these
instructions.

This water heater has been certified for operation using natural
gas or propane gas fuel by the Canadian Gas Association (CGA)
and design-certified by the American Gas Association
Laboratories (AGA) through International Approval Services Inc.
This heater is approved to provide potable hot water or when
combined with a suitably-sized fan coil, baseboard heater, etc., to
provide both space heating and domestic hot water.

In addition to the installation instructions found in this manual,
the heater shall be installed in accordance with the latest edition
of CAN/CGA B149.1, B149.2 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.

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 water heater. Consult your local authorities for regulations
specific to your area.

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 4

⋅

4 is required.

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.

Ø 

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).

Ø 

Hot water produced by this appliance can cause severe burns
due to scalding. The hazard is increased for young children,