Recommended Piping For Circulation Systems - Rinnai R63LSe Operation And Installation Manual

Recommended Piping for Circulation Systems

Notes:
PLEASE NOTE FOR RESIDENTIAL
AND COMMERCIAL
APPLICATIONS, THIS PIPING
ARRANGEMENT MAINTAINSFULL
WARRANTY
For this application:
Pump should be controlled by an Aquastat,
Timer or Combination Aquastat and Timer.
Pump to be sized to maintain circulation
loop temperature.
A minimum of 3 GPM flow is recommended
for the circulation system.
The pump should be sized to overcome the
pressure loss through the Rinnai water
heater, supply and return plumbing. Refer -
ence the Rinnai Hot Water System Design
Manual, Pump Sizing for Circulation.
Pump to be of bronze or stainless construc -
tion.
IMPORTANT: Connect the building
return line to the hot water supply line
as close as possible to the Rinnai Water
Heater.
3/4" Ball Valve
3/4" Union
Check Valve
Pressure Relief Valve
24
Water Heater
KEY
Pressure Regulator
Circulating Pump
Boiler Drain Valve
S
Solenoid Valve
VA Series Outdoor LS Manual
Rinnai
Tank Water Heater to be Sized for
Heat Loss of Circulation Loop.
Electric Water
Heater
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.
Rinnai
Equipment List
Rinnai
Water Heaters
RIK-KIT (Optional)
(3/4" Fittings Include:
2 Unions, 2 Ball Valves,
2 Drain Valves and
1 Pressure Relief Valve.)
Minimum 3/4" Cold Water Supply Line
Building Supply
Building
Fixtures
QTY
1
1