This water heater is designed to be used only with forced circulation. The
pump may be mounted directly on top of the unit. The plumbing
professional installing the water heater has the option of using either the
top or side connections for the pump suction and collector return lines
(See Figure 1). If the side connections are used, the corresponding top
connections must be capped (plugged). Each water heater is
manufactured with plugs installed in the side connections. If the side
connections are to be used, the plugs installed at the factory must be
removed. Connect the inlet side of the pump to the line marked pump
suction connection. Connect the outlet of the pump to the inlet of the
solar connector. The outlet of the collector should be connected to the
fitting marked collector return.
The two fittings on top not used for the pump suction and collector return
lines are for connecting the cold water inlet supply and the hot water
outlet supply.
A bleed valve shall be installed in the system above the level of the pump
in order to bleed the air out of the water lines.
If this water is installed on a system utilizing any heat transfer solution
other than potable water, a separate heat exchanger must be installed. A
qualified heat exchanger must be constructed in such a manner that failure
of the heat exchanger will not result in contamination of the potable water.
If a separate heat exchanger is used, forced circulation must be used
between the heat exchanger and the solar storage unit. Using either the
top or side connections, connect the inlet of the pump to the pump suction
connection and return line from the heat exchanger to the collector return
connection.
After the installation of all water lines is complete, open the main water
supply valve and fill the heater. Open several hot water faucets to allow
air to escape from the system while the water heater is filling. When
water passes through all the faucets, close the faucets and check for
possible leaks in the system.
This water heater can deliver scalding temperature water at any faucet in
the system. Be careful whenever using hot water to avoid scalding injury.
Certain appliances, such as dishwashers and automatic clothes washers
may require increased temperature water. By setting the thermostat on
this water heater to obtain increased temperature water required by these
appliances, you may create the potential for scald injury.
To protect against injury, you should install an anti-scald tempering valve
in the water system. This valve will reduce point of discharge
temperature by mixing cold and hot water in branch supply lines. Such
lines are available from the local plumbing supplier. Please consult with
a plumbing professional.
Under certain conditions, water in this water heater may become
excessively hot. It is recommended that a thermostatically
controlled tempering valve may be installed in the outlet line to
reduce the risk of scald injury by preventing point of discharge
water temperatures in excess of 140°F (60°C).
CAUTION
Increasing the thermostat setting above the preset temperature
may cause severe burns and consume excessive energy. Hotter
water increases the risk of scald injury.
CAUTION
This water heater does not contain a heat exchanger, therefore,
only potable water may be allowed to enter the water heater.
IMPORTANT
Install the combination temperature and pressure relief valve into the
opening provided and marked for this purpose on the water heater.
Install a discharge line so that water discharged from the
combination temperature and pressure relief valve will exit within 6
in. (15.3 cm) above, or any distance below the structural floor and
cannot contact any live electrical part. The discharge line is to be
installed to allow for complete drainage of both the temperature and
pressure relief valve and the discharge line. The discharge opening
must not be subjected to blockage or freezing. DO NOT thread, plug
or cap the discharge line. It is recommended that a minimum of 4 in.
(10.2 cm) be provided on the side of the water heater for servicing
and maintenance of the combination temperature and pressure relief
valve.
Do not place a valve between the combination temperature and
pressure relief valve and the tank.
WARNING
2
Figure 1
