Rinnai ThermaCirc360 RUR199i Installation And Operation Manual page 60

ThermaCirc360™ Recirculation (Determine Recirculation Mode)
Two recirculation modes are available:
DEDICATED MODE
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 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.
Connection Diagram
Hot water outlet with
bypass plug / filter
Condensate trap
drain plug
Condensate drain line
Check valve drain plug
Cold water inlet with filter
60
Crossover mode — Home does not include a dedicated
circulation return line. Requires installation of a thermal
bypass valve (included with purchase) at the furthest
fixture in the plumbing system.
DO NOT install in combination with hydronic
heating applications.
DO NOT electronically manifold (Cascade / EZ
Connect) multiple RUR 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
Rinnai Tankless Water Heater Installation and Operation Manual
CROSSOVER MODE
PRV Connection
Gas connection