GSW WATER HEATING User Manual
GSW WATER HEATING
599 Hill Street West
Fergus, ON, Canada N1M 2X1
STORAGE BOOSTER TANKS
INSTALLATION AND OPERATING INSTRUCTIONS
Read and understand these instructions thoroughly before starting
TABLE OF CONTENTS
I) Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
II) Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
III) Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
IV) Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
V) Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
PLEASE RETAIN THESE INSTRUCTIONS IN A
SAFE LOCATION FOR FUTURE REFERENCE
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, or the electric utility.
FOR YOUR SAFETY
• Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
• Installation and service must be performed by a qualified installer, service
agency or the electric utility.
WARNING:
If the information in these instructions is
not followed exactly, a fire or explosion
may result causing property damage, personal injury or death.
GSW Water Heating is a division of GSW Water Products Inc.
PART NO. 71772 C (05-02)
I) INTRODUCTION
Thank you for purchasing this storage booster tank.
Properly installed and maintained, it will provide years of
trouble free service.
The warranty on this storage booster tank is in effect only
when the tank is installed and operated in accordance with
these instructions. The manufacturer of this tank will not be
liable for any injury or property damage resulting from failure to comply with these instructions.
IMPORTANT: Read and understand these instructions
before installing and operating your storage booster tank.
Description
The JOHN WOOD series of storage booster tanks, available in 40, 50 or 80 gallon sizes, have been designed to
supply hot water for domestic use when combined with a
tankless coil boiler or other water heating source. Each tank
is equipped with an adjustable thermostat, pre-wired and
ready for connection to a circulator pump (not supplied).
These tanks are not constructed to ASME requirements and
should not be used for such applications.
III) INSTALLATION
WARNING
Excessive Weight Hazard
Use two or more people to move and install
storage booster tank. Failure to do so can
result in back or other injury.
CAUTION
Hydrogen gas can be produced in a hot water system
served by this storage tank that has not been used for a
long period of time (generally two (2) weeks or more).
Hydrogen gas is extremely flammable and can ignite
when exposed to a spark or flame. 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 connected to the hot water system. Use caution in opening
faucets. When 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 it is open.
II) SAFETY
Relief Valve Requirements
WARNING
For protection against excessive temperatures and pressure, install temperature and pressure protective equipment required by local codes, but no less than a combination Temperature and Pressure (T&P) Relief Valve certified as meeting the requirements for Relief Valves and
Automatic Gas Shutoff Devices for Hot Water Supply
Systems, ANSI Z21.22, by a nationally recognized test-
ing laboratory that maintains periodic inspection of production of listed equipment or materials. The valve shall
be marked with a maximum set pressure not to exceed
the maximum working pressure of the storage tank. The
T&P valve shall be rated for the BTU INPUT of the entire
system.This T&P valve may be in addition to any T&P
valve that is required on the boiler, or other energy supply
system. Install the valve into the opening provided on the
storage tank, or other approved system location. Provide
tubing so that any discharge from the valve will exit within
152mm (6 in.) above, or any distance below the structural floor and cannot contact any live electrical part. The end
of the relief pipe opening should terminate near the floor
drain or other suitable location. Do not place a valve(s) or
any other blockage or restrictions between the tank and
the T&P valve.
T&P Valve Check
Inspect the relief valve annually to ensure proper operation.
This involves opening the valve to check that it is flowing
freely and that there are no blockages and letting it snap
shut (see “MAINTENANCE” section).
Local Codes
The installation of this storage tank must be In accordance
with these Instructions and all applicable local codes.
Location
IMPORTANT:
This storage booster tank must be installed strictly in
accordance with the instructions enclosed, and local electrical, fuel and building codes. It is possible that connections to the tank, or the tank itself, may develop leaks. IT
IS THEREFORE IMPERATIVE that the storage booster
tank be installed so that any leakage of the tank or related water piping is directed to an adequate drain in such a
manner that it cannot damage the building, furniture, floor
covering, adjacent areas, lower floors of the structure or
other property subject to water damage. This is particularly important if the tank is installed in a multi-story building,
on finished flooring or carpeted surfaces. GSW WILL NOT
ASSUME ANY LIABILITY for damage caused by water
leaking from the storage booster tank, pressure relief
valve, or related fittings. Select a location as centralized
within the piping system as possible. In any location
selected, it is recommended that a suitable drain pan be
installed under the storage booster tank. This pan must
limit the water level to a MAXIMUM depth of 45mm (1 3/4
in.) and have a diameter that is a minimum of 50mm (2 in.)
greater than the diameter of the storage booster tank.
Suitable piping shall connect the drain pan to a properly
operating floor drain.
Locate the storage tank in a clean dry area close to the
water heating source and preferably central to the piping
system. Adequate clearance for accessibility to permit main-
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tenance and service must be provided. Water lines and the
storage tank should be protected from freezing temperatures. Do not install the storage tank in outdoor unprotected
areas. It is desirable to have a floor drain nearby to permit
easy draining if necessary.
WARNING
The water heating source piping and components connected to the tank must be suitable for potable water use.
TOXIC chemicals such as used for boiler treatment must
not be introduced into the tank.
Circulator Pump
A circulator pump is not supplied. Use only a bronze body
model rated for 110/120 volts, 60Hz. Install in accordance
with the pump manufacturer’s instructions using standard
plumbing practices.
Plumbing Connections
The main parts and features of your storage booster tank
are identified in Figure 1. Install plumbing according to
Figure 2 for single storage tank and according to Figure 3
for multiple storage tank systems.
1. Ensure the storage tank is level before starting installation.
T&P VALVE (SOME
MODELS WILL HAVE
A SIDE MOUNT FOR
THIS VALVE)
JUNCTION BOX
SUPPLY (TO BOILER
TANKLESS COIL)
IMPORTANT
Do not apply heat directly to tank fittings when making
sweat connections. They contain non-metallic material.
2. Install circulation loop as shown using 19mm (¾ in.)
copper pipe.
3. Install the cold water supply piping into a tee between
the circulator discharge and the boiler coil inlet.
4. Connect the boiler supply line to the combination return
and drain valve.
5. Connect hot water supply to top tank fitting.
6. Install 19mm (¾ in.), 150 psi Temperature and Pressure
Relief Valve into the tank as shown.
7. A check valve may be installed between the cold water
tee connection and the circulator. This will force the cold
water through the coil first.
NOTE: The check valve can often be noisy and cause
reduced supply pressures. For multiple storage tank sys-
CHECK VALVE
T&P VALVE
HOT
STORAGE
BOOSTER
TANK
CIRCULATOR
PUMP
EXPANSION TANK (OPTIONAL)
HOT
REGULATOR
T&P VALVE
(FOR SOME
MODELS)
PRESSURE
(OPTIONAL)
COLD
HOT
WATER
OUTLET
ANODE
THERMOSTAT
CONTROL
ACCESS
DOORS
TANKLESS
COIL BOILER
COMBINATION RETURN
& DRAIN VALVE
Figure 2: Single Storage Booster Plumbing Diagram
CHECK VALVE
T&P VALVE
HOT
STORAGE
BOOSTER
TANK
CIRCULATOR
T&P VALVE
HOT
EXPANSION TANK (OPTIONAL)
PUMP
STORAGE
BOOSTER
TANK
CHECK
VALVE
HOT
T&P VALVE
(FOR SOME
MODELS)
TANKLESS
COIL BOILER
PRESSURE
REGULATOR
(OPTIONAL)
COLD
COMBINATION
RETURN &
DRAIN VALVE
Figure 1: Main Parts and Features
THERMOSTAT
RETAINER
COMBINATION RETURN
& DRAIN VALVE
Figure 3: Multiple Storage Booster Plumbing Diagram
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