Rinnai RC80HPI Optional Piping for Circulation Systems, years on heat exchanger 3 year on parts

Optional Piping for Circulation Systems

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.

Condensate drain line

Note: Water heater outlet temperature	Condensate
cannot be adjusted when	drain
circulation pump is running.
Minimum 3/4" Hot Water
Supply Line
	(Optional)
	2-6 Gallon
	Storage Tank
	(To eliminate cold water
	sandwich effect caused by
	frequent On/Off operation)

Building Fixture Outlets

NOTE:

For residential and commercial applications, this piping arrangement reduces the warranty to the following:

3 years on heat exchanger

3 year on parts

Full warranty will be maintained if an on-demand recirculation system in incorporated. Refer to the Limited Warranty.

Rinnai
Equipment List		QTY
Rinnai		1
Water Heaters
RIK-KIT (Optional)		1
(3/4" Fittings Include:
2	Unions, 2 Ball Valves,
2	Drain Valves and
1	Pressure Relief Valve.)

3/4" Gas Connection

Gas Supply

Minimum 3/4 “ Cold Water Supply Line

Expansion Tank

	KEY
3/4" Ball Valve	Pressure Regulator
3/4" Union	Circulating Pump
Check Valve	Boiler Drain Valve
Pressure Relief Valve	S Solenoid Valve

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 and configuration of the particular system being installed. This drawing does not imply compliance with local building code requirements. It is the responsibility of the contractor/engineer to ensure installation is in accordance with all local building codes. Confer with local building officials before installation.

Manual - Rinnai Condensing Water Heaters 25