Rinnai RL75I, RL94I Recommended Piping for Circulation Systems, ment maintains full warranty

Recommended Piping for Circulation Systems

NOTE:

For residentialandandcommercial applications,thisthispipingpipingarrangement- maintains full warranty.

ment maintains full warranty.

For this application:

Pump should be controlled by an Aqua- stat, Timer or Combination Aquastat and Timer.

Pump to be sized to maintain circulation loop temperature.

The pump should be sized to overcome the pressure loss through the tank water heater, and supply and return plumbing. Reference the Rinnai Hot Water System Design Manual, Pump Sizing for Circula- tion.

Pump to be of bronze or stainless construction.

Rinnai

Water Heater

		Rinnai		QTY
		Equipment List
		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

IMPORTANT: Connect the building return line to the hot water supply line as close as possible to the Rinnai Water Heater.

Tank Water Heater to be Sized for Heat Loss of Circulation Loop.

Electric Water

Heater

Building Supply

Building

Fixtures

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.

VB Series Indoor LS Manual 25