Rinnai SENSEI RSC160i Installation And Operation Manual page 76

5.7. 1 ThermaCirc360™ Recirculation (Determine
Recirculation Mode)
Two recirculation modes are available:
DEDICATED MODE
Cold Water
Figure 80
Dedicated mode (factory default) - Home
includes a dedicated circulation return line
in the plumbing system. The water heater
is shipped configured for the Dedicated
Recirculation Line mode.
General Guidelines
• For the licensed installer / professional
• For installation in commercial and resi-
dential domestic hot water applications
only.
• Rinnai strongly recommends installing
insulation to the hot water and dedicated
return lines to decrease the amount of
heat loss.
Connection Diagram
Hot water outlet
Condensate trap drain plug
Condensate drain line
76
Hot Water
Cold water inlet with filter
Figure 82
Rinnai Tankless Water Heater Installation and Operation Manual
CROSSOVER MODE
Figure 81
Crossover mode - Home does not include
a dedicated circulation return line. Requires
installation of a thermal bypass valve
(included with purchase) at the farthest fixture
in the plumbing system.
• DO NOT install in combination with
hydronic heating applications.
• DO NOT electronically manifold (Cas-
cade / EZConnect™) multiple RSC
units together.
• DO NOT install the MC-195T-US Timer/
Controller and control•r™ Wi-Fi Module
together as they are not compatible
accessories.
Water drain plug
PRV Connection
Gas Connection