Rinnai Water Heater REU-V2520FFUD - Manual (Page 32)

103 International Drive
Peachtree City, Georgia 30269
RINNAI WATER HEATERS
Domestic Hot Water - Circulation Systems
1 Rinnai Water Heater with Electric Storage Tank
This is not an engineered drawing, it is intended only as a guide and
not as a replacement for professionally engineered project drawings.
This drawing is not intended to describe a complete system, it is up
to the contractor/engineer to determine the necessary components
for and configuration of the particular system being installed. The
drawing does not imply compliance with local building code
requirements. It is the engineer/contractor responsiblity to ensure
the installation is in accordance with all local building codes. Confer
with local building officials before installation.
Pressure Relief Valve
3/4" Ball Valve
3/4" Union
Check Valve
S
Pressure Regulator
Circulating Pump
Solenoid Valve
Boiler Drain Valve
KEY
Minimum 3/4" Cold Water Supply Line
2-5 Gallon
Electric Water
Heater
120°F Building
Fixtures
Building Return (Not required to be 3/4" Line)
Building Supply
Expansion Tank
Gas Supply
QTY
1
1
1
Rinnai
Water Heater
Pump Should be Controlled by an
Aquastat, Timer or Combination
Aquastat and Timer. Pump to be sized
for Pressure Drop through Building
Supply and Return Piping. Pump to be
of Bronze or Stainless Construction.
Notes:
PLEASE NOTE FOR RESIDENTIAL
APPLICATIONS, THIS PIPING
ARRANGEMENT
MAINTAINS FULL
WARRANTY:
10 Years On Heat Exchanger
5 Years On Parts
Commercial Application Warranty:
5 Years On Heat Exchanger
5 Years On Parts
Rinnai
Equipment List
(Residential and
Commercial)
Rinnai
Water Heaters
(Indoor)
MC-91 Controller
(Included)
MC-100V and BC-100V
Controllers Optional
RIK-KIT (Optional)
(3/4" Fittings Include:
2 Unions, 2 Ball Valves,
2 Drain Valves and
1 Pressure Relief Valve.)
3/4" Gas Connection
Important: Install building return
line to the hot supply as close as
possible to the Rinnai Water
Heater.
Venting Equipment List
(Commercial and Residential)
Indoor Unit
Please Review Venting
Instructions/Guidelines for
Proper Components and
Installation.

Rinnai America FF Models
I N S TA L L E R ’ S I N S TA L L AT I O N I N S T R U C T I O N S
RECOMMENDED PIPING FOR CIRCULATION SYSTEMS