Installation / Operation Instruction Manual

Pre-installation continued-

Recommended Service Clearances

Non-Piping Side

Front (Aquastat)

Rear

Top

6”(15.2cm)

30”(76.2cm)

1”(2.5cm)

12”(30.5cm)

Table 6: Service Clearances

Appliance Location

1. Boiler Location – Locate the indirect-fired water heater as close

to the boiler as practical.

2. Fixture Locations – For fastest delivery of hot water, place the

indirect-fired water heater close to points of use.

Additional Recommended Components

1. Shut-off Valves – Allows isolation of water heater from domestic

water system and/or boiler system during service.

2. Unions – Allows water heater movement during service if

adequate clearance cannot be provided.

3. Thermal Expansion Tank – If the water heater is installed in a

closed water supply system, such as one having a back-flow

preventer in the cold water line, provide thermal expansion control.

Contact the water supplier or local plumbing inspector for

additional information.

MOVE THE WATER HEATER TO A PERMANENT POSITION BY

SLIDING OR WALKING.

CAUTION

DO NOT drop water heater. DO NOT bump water heater jacket

against floor.

WARNING

DO NOT plug the inlet and outlet tappings of tankless heater left

installed in the boiler.

NOTICE

Note: Per Section 507.2 Seismic Provisions of the 2021 Uniform

Plumbing Code (UPC). Water heaters shall be anchored or strapped

to resist horizontal displacement due to earthquake motion. Strapping

shall be at points within the upper one-third and lower one-third of its

vertical dimensions. At the lower point, a distance of not less than 4

inches shall be maintained from the controls with the strapping.

Please refer to the local authority having jurisdiction to see if there are

any additional local requirements regarding seismic provisions.