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18
Installing the water heater.
UPS15-5BFC/LC, 115 volt. The pump shall be
prewired with a 6’ line cord so that it can be plugged
directly into the 115 volt receptacle on the side of
the differential control. Two way ball valves must
be installed on either side of the circulating pump
(Nos.12 and 14) so that the pump can be isolated
from the collector loop. Repairs or routine system
maintenance can be completed without introducing air
into the system or draining the HTF.
The expansion tank shall have a minimum 150 PSIG
working pressure and have a total volume of not less
than 4.4 gallons. The standard factory charge should
be 40 PSIG. The expansion tank shall be Rheem/Ruud
Therm-X-Guard Model RRT- 12 or equal (No. 8).
A high quality thermostatic mixing valve is a required
component in all OG-300 certied systems and should
be plumbed in line with brass union connections for
ease of future repair or replacment (No. 32). The
specied mixing valve shall be the Heatguard model
HGBASE or equal and shall have an operating range
between 95°F and 140°F. The mixing valve shall be
set to 120°F.
The temperatures generated by your Rheem system
will vary throughout the year. In the Northern
Hemisphere the water temperature will be hottest
in the spring and summer months while cooler
temperatures are to be expect from November through
March. On sunny days system temperatures may
range between 110ºF to 180ºF depending upon the
season and hot water demand. The mixing valve
described above blends the hot and cold water
fig.12
STAND OFF TILT MOUNT