21
installation diagrams - top inlet/outlet usage
The type, size and location of the relief valves must be in
accordance with local codes. The locations of the relief valves
shown in the installation diagrams are typical. See pages 34-48.
The heater has a factory installed high temperature limit switch
and temperature and pressure relief valve.
Cold water lines to heater should be installed as shown in order
to minimize gravity circulation of hot water to building cold water
lines.
A listed temperature and pressure relief valve of adequate capacity
is installed on the heater. The locations shown in the installation
diagrams on the following pages are typical.
The discharge opening of the temperature and pressure relief
valve, located in front of the heater must be piped to an open drain
and should not be subject to freezing temperatures.
install in accordance with all local codes.
use of the top inlet water connection requires installation of an inlet
dip tube (refer to gure 19). The tube is supplied in the heater.
follow caution labels if applying heat to this tting. Do not allow
pipe dope to contact the plastic tube during installation.
tuBe inlet installation
figure 19.
code restrictions
use of the top inlet water connection is not permitted on
installations in the state of North Carolina, due to the material
of the tube (Polypropylene). Where such code restrictions
exist, use only lower inlet tank connection. This may also
require a heat trap piping configuration - check local codes.
The “Top outlet” connection may still be used on these
applications. Plug or cap all unused openings in the tank
before filling with water.
temperature setting should not exceed
safe use temperature at fixtures. see water
temperature control and mixing ValVes on
page 11. if higher preheat temperatures are
necessary to oBtain adeQuate Booster output,
add an anti-scald ValVe for hot water supplied
to fixtures.