Optional Piping for Circulation Systems

Figure 7: Optional Piping for Circulation Systems

NOTE:

Applications, using 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.

For this application:

Water Heater

Equipment ListQTY

Water Heaters

Plumbing Installation 1

Kit (Optional)

(314" Fittings Include:

2 Unions, 2 Ball Valves,

2 Drain Valves and

I Pressure Relief Valve.)

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 T

pressure loss through the water heater, supply and return plumbing.

Pump to be of bronze or stainless construc- tion.

Note:	Water heater outlet temperature
	cannot be adjusted when
	circulation pump is running.
	Minimum 3/4" Hot Water
	Supply Line
	(Optional)
	2-6 Gallon
	Storage	Tank
	(To eliminate cold water
	0
	sandwich effect caused by
	frequent	On/Off operation)

3/4" Gas Connection

Gas Supply

Minimum 3/4" ColdWater Supply Une

Expansion Tank

Building Fixture Outlets

;

KEY

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.

305 & 505 Outdoor Manual