Piping Diagram For A Basic Ch System - Rinnai I Series Installation And Operation Manual

Optional Low Water
Cut-Off (LWCO)
Outdoor
Sensor
Thermostat
This is not an engineering drawing; it is intended only as a guide and not as a replacement for professional engineering project
drawings. This drawing is not intended to describe a complete system. It is up to the contractor or engineer to determine the
necessary components and configuration of the particular system to be installed. The drawing does not imply compliance with local
building code requirements. It is the responsibility of the contractor or engineer to ensure the installation is in accordance with all
local building codes. Confer with local building officials before installation.
LEGEND
Rinnai I-Series Condensing Boiler Combi Manual
This schematic shows an example of a simple
single zone system without primary/secondary
piping.
This piping arrangement is possible for a
system that has one or a few small zones and a
low pressure drop that can be overcome by
the main boiler pump.
A bypass line is recommended to allow
circulation if the freeze protection function of
the boiler is engaged.
Heat Emitter
IMPORTANT
This picture illustrates a suggested
arrangement. Some of the fittings
are optional.
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