PART NO. 100266523
– 3 –
INTRODUCTION
Thank you for purchasing this FlowThru
®
storage tank.
Properly installed and maintained, it will provide years of
trouble free service.
The warranty on this storage 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 tank.
DESCRIPTION
The FlowThru
®
series of storage tanks have been designed
to supply hot water for domestic use when combined with a
tankless coil boiler or instantaneous water heater (IWH). 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. The FlowThru
®
series of storage tanks has been optimized to maximize hot
water
fl
ow rate capabilities of an instantaneous water heater
or tankless coil boiler. They provide a faster recovery than
regular electric or gas-
fi
red tank type water heaters of the
same storage capacity. Always use a mixing valve on the hot
water outlet (not provided).
SAFETY
RELIEF VALVE REQUIREMENTS
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 certi
fi
ed as
meeting the requirements for
“Standard For Relief Valves
For Hot Water Supply Systems, ANSI Z21.22/CSA 4.4”
.
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 instantaneous water
heater 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
fl
oor and cannot contact any live electrical part. The end of
the relief pipe opening should terminate near the
fl
oor 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.
INSTALLATION
Failure to do so can result in back or
other injury.
Use two or more people to move and install
water heater.
Excessive Weight Hazard
WARNING
LOCAL CODES
The installation of this storage tank must be In accordance
with these Instructions and all applicable local codes.
LOCATION
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 maintenance
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 necessary to have a
fl
oor drain nearby to permit easy
draining (see Figure 1).
IMPORTANT
This storage 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 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,
fl
oor covering, adjacent areas, lower
fl
oors 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
fi
nished
fl
ooring or carpeted
surfaces. GSW WILL NOT ASSUME ANY LIABILITY for
damage caused by water leaking from the storage tank,
pressure relief valve, or related
fi
ttings. 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 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 tank. Suitable piping shall
connect the drain pan to a properly operating
fl
oor drain.
