Connection Diagram - Rinnai SENSEI RX199i Installation And Operation Manual

Two recirculation modes are available:
DEDICATED MODE
Cold Water
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.
Figure 82
General Guidelines:
•
For the licensed installer / professional
•
For installation in commercial and residential 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.
•
DO NOT install in combination with hydronic heating applications.
•
DO NOT electronically manifold (EZConnect™) multiple RXP units together.
•
DO NOT install the MC-195T-US Timer/Controller and Wi-Fi Module together as they are not
compatible accessories.
Connection
Diagram:
Condensate
Drain Trap Plug
Condensate
Drain Line
Pressure
Relief Valve
Figure 83
Rinnai Tankless Water Heater Installation and Operation Manual
Hot Water
Hot Water Water
Outlet Drain Plug
CROSSOVER MODE
Crossover mode - Home does not include a
dedicated circulation return line. Requires
installation of a thermal bypass valve
(included with purchase for RXP models) at
the farthest fixture in the plumbing system.
Hot Water Drain Valve
Cold Water
Drain Valve
Cold Water Inlet
With Filter
Gas Connection
77