Install Instructions

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Phase III

Installation

Water Hammer

Dishwashers, clothes washers and fast-closing pos-

itive shut-off valves incorporated in the system all

contribute to creating water shock. Install a water

hammer arrester to prevent damage to pipes and

appliances. See device manufacturer’s instructions

for application and installation.

Water hammering within the domestic pip-

ing system can cause premature failure of

the inner tank of the water heater. This type

of failure is NOT covered under warranty.

Vacuum Breaker

Installing a vacuum breaker on the domestic cold

water outlet will prevent damage to the inner tank

if a negative pressure is developed in the domestic

supply line. See manufacturer’s instructions for

application and installation of the vacuum breaker.

General Piping

• For domestic water piping diagrams, see page 8

thru 10.

•See pages 11 through 14 for:

- Boiler water piping

- Multiple water heater domestic and boiler

piping.

• See Chart 1 for domestic and boiler piping

connections.

• All plumbing must meet or exceed all local,

state and national plumbing codes.

• Use pipe dope or tape suitable for potable

water systems.

• Use isolation valves to isolate system components.

Domestic Piping

• Union on domestic hot water outlet should be

piped at a higher elevation than domestic water

drain valve. This will make draining the water

heater easier.

• Install unions for easy removal of water heater.

Use dielectric unions or couplings to protect

NOTICE

Chart 1

Connections - NPT Recirculation Dip Tube Draining Dip Tube Recommended

Water Heater Domestic Boiler Water Auxiliary Length Diameter Length Diameter Minimum

Model Water Supply/ Connection inches inches inches inches Boiler Piping

Inlet/Outlet Return Diameter (inches)

TR-20 3/4 1 3/4 34 3/4 34 3/4 1

TR-30 3/4 1 3/4 43 3/4 43 3/4 1

TR-36 3/4 1 3/4 52 3/4 52 3/4 1

TR-45 1 1 1/4 3/4 25 3/4 47 3/4 1 1/4

TR-60 1 1 1/4 1 25 1 54 1 1 1/4

TR-80 1 1/2 2 1 1/2 25 1 1/2 48 1 1/2 2

TR-100 1 1/2 2 1 1/2 32 1 1/2 61 1 1/2 2

TR-120 1 1/2 2 1 1/2 32 1 1/2 61 1 1/2 2

SMART 20 3/4 1 3/4 23.5 3/4 23.5 3/4 1

SMART 30 3/4 1 3/4 34 3/4 34 3/4 1

SMART 40 3/4 1 3/4 43 3/4 43 3/4 1

SMART 50 3/4 1 1/4 3/4 25 3/4 52 3/4 1 1/4

SMART 60 3/4 1 1/4 3/4 34 3/4 62 3/4 1 1/4

SMART 80 1 1/2 1 1/2 1 1/2 25 1 1/2 48 1 1/2 1 1/2

SMART 100 1 1/2 1 1/2 1 1/2 32 1 1/2 61 1 1/2 1 1/2