Rheem RS120-64BP Use & Care Manual page 8

fig. 1
ferred to the HTF circulating through the solar
fig. 1
collector. The system pump efficiently circulates
this heated fluid through the collector piping and
the controller will turn the circulating pump on. When
ferred to the HTF circulating through the solar
integral tank heat exchanger. The heat exchang-
the temperature difference has been reduced to eight
collector. The system pump efficiently circulates
er consists of a 120' length of copper tubing
degrees, the controller automatically turns the pump
this heated fluid through the collector piping and
wrapped around the solar storage tank. As the
off.
integral tank heat exchanger. The heat exchang-
HTF passes through the heat exchanger the heat
er consists of a 120' length of copper tubing
in the fluid is transferred by conduction to the
Both single and double tank Rheem systems are
wrapped around the solar storage tank. As the
potable water in your solar storage tank. As this
designed to provide three separate modes of system
HTF passes through the heat exchanger the heat
process is continuously repeated during the aver-
operation. The system will, (1) accommodate 100%
in the fluid is transferred by conduction to the
age sunny day the temperature in your solar stor-
solar operation, (2) serve as a preheater to your solar
potable water in your solar storage tank. As this
age tank rises.
storage tank or back-up water heater, or (3) bypass the
process is continuously repeated during the aver-
solar collector and run 100% on utility power. Section
The circulating pump in a solar water heating sys-
age sunny day the temperature in your solar stor-
Six provides instructions for setting the system for
tem may be favorably compared with the human
age tank rises.
automatic operation in each of these three modes.
heart. To continue the analogy, the differential
The circulating pump in a solar water heating sys-
thermostat, or controller, is the brain in the sys-
The Dowfrost HD HTF protects your Rheem solar
tem may be favorably compared with the human
tem. The controller uses 10K ohm thermistors, or
system against freezing. Dowfrost HD can provide
heart. To continue the analogy, the differential
sensors, to constantly monitor the temperature
reliable freeze protection at temperatures as low
thermostat, or controller, is the brain in the sys-
difference between the hottest and coldest
as minus 30° Fahrenheit if properly applied and
tem. The controller uses 10K ohm thermistors, or
points in the system and to automatically turn
maintained. Use of uninhibited propylene glycol,
sensors, to constantly monitor the temperature
the circulating pump on and off throughout the
plain water or a concentration of these two fluids as
difference between the hottest and coldest
day.
the HTF in this system is strictly prohibited.
points in the system and to automatically turn
When the solar collector absorber plate is
the circulating pump on and off throughout the
day.
8
P.2
When the solar collector absorber plate is
P.2
COLLECTOR ORIENTATION
COLLECTOR ORIENTATION
approximately twelve degrees hotter than the
temperature in the bottom of your solar storage
tank, the controller will turn the circulating pump
Propylene glycol can degrade over time. The process
approximately twelve degrees hotter than the
on. When the temperature difference has been
of degradation is accelerated in presence of oxygen
temperature in the bottom of your solar storage
reduced to four degrees, the controller automat-
and/or heat. We strongly encourage you to establish
tank, the controller will turn the circulating pump
ically turns the pump off.
a preventative maintenance schedule with your
on. When the temperature difference has been
installation contractor. The HTF pH level must be
Both single and double tank Solaray systems are
reduced to four degrees, the controller automat-
maintained between 8 and 10 in order to prevent
designed to provide three separate modes of sys-
ically turns the pump off.
glycol oxidation and corrosion of the collector piping.
tem operation. The system will, (1) accommo-
Rheem's collector warranty specifically excludes
Both single and double tank Solaray systems are
date 100% solar operation, (2) serve as a pre-
freeze damage for any reason and absorber plate
designed to provide three separate modes of sys-
heater to your solar storage tank or back-up
damage resulting from the oxidation of the propylene
tem operation. The system will, (1) accommo-
water heater, or (3) bypass the solar collector and
glycol HTF.
date 100% solar operation, (2) serve as a pre-
run 100% on utility power. Section Six provides
heater to your solar storage tank or back-up
water heater, or (3) bypass the solar collector and
run 100% on utility power. Section Six provides
fig.2
fig.2
STAGGERED MOUNT
COLLECTOR SPACING
STAGGERED MOUNT
COLLECTOR SPACING