A.O. Smith ST 1500, ST 3000 User Manual

INSTALLATION INSTRUCTIONS

AND USERS MANUAL

HOT WATER STORAGE TANKS

MODEL: ST 1500-3000

FOREWORD

Before attempting to install this water heater please read the installation instructions. An authorized installer must install the heater and commission it according to the local valid requirements.

A.O. SMITH CANNOT ACCEPT ANY RESPONSIBILITY FOR GUARANTEE, SERVICE AND/OR PRODUCT LIABILITY IN THE EVENT OF UNAUTHORIZED CHANGES, PRODUCT MODIFICATIONS OR REPAIRS.

CONTENTS

1. GENERAL

1.1 Description of the heater 3

1.2 Controls 3

1.3 Dimensions 3

1.4 Technical data 5

2. FOR THE INSTALLER

2.1 Installation 5

2.2 Water connections 6

2.3 Commissioning 7

2.3.1 Filling the heater 7

2.3.2 Heater start-up 7

2.4 Shutting down 7

2.5 Maintenance 7

2.5.1 Anode 7

2.5.2 Descaling 7

2.6 Spare parts 8

3. FOR THE END - USER

3.1 Filling the heater 8

3.2 Start-up of the water heater 8

3.3 Shutting down 8

3.4 Maintenance 8

4. WARRANTY

4.1 Warranty in general 9

4.2. Warranty of the tank 9

4.3 Conditions for installation and use 9

4.4 Exclusions. 10

4.5 Scope of the warranty 10

4.6 Claims 10

4.7 No other obligations for A.O. Smith than those stated in this manual 10

1. GENERAL

1.1 Description of the heater

Construction of the heater is in accordance with the European standard for water heaters or sanitary use. The heaters are suitable for use with a working pressure of up to 7 bar. The cylindrical tank is made from sheet steel. For protection against corrosion, the inside of the tank is glass-lined. The tank is also fitted with magnesium anodes for extra protection against corrosion. A thick, replaceable insulation jacket minimizes heat loss.

1.2 Controls.

ST models are supplied without controls.

1.3 Dimensions

2 Hot water outlet 2”

”

Clean out flange

1 Cold water inlet/drain 2”

ST 1500/2000 ST 2500/3000

Connection sizes

1 Inlet

2 Outlet

5 Anode

Recirculation

connection

8 T&P connection

A Tank diameter

B Overall diameter

C Height

D Height alt inlet

Distance between 2 “

connections Height

circulation conn. height clean out

opening

H Height inlet

Clean out

diameter

2" 2"

3/4 3/4

1¼" 1¼"

3/4 3/4

1100 1400

1200 1500

1930/2118 1990/2118

400 480

550/644 500/565

710 690

450 530

135 183

110 110

1.4 Technical specifications

1 Storage capacity ltr

2 Tank heat loss kWh/24h

3 Maximum working pressure bar

4 Test pressure tank bar

5 Maximum allowed tank temperature °C

6 Weight empty kg

ST 1500/2000 ST 2500/3000

1500/2000 2500/3000

8.5 10.1 7 7

12 12 95 95

374/506 637/739

2. FOR THE INSTALLER

2.1 Installation

A qualified, competent installer must install the hot water storage tanks in accordance with local valid regulations and codes. Location needs to be chosen to prevent damage in case of tank leakage (e.g. place tank in a drain pan or near a floor drain of sufficient capacity). For mounting of the jacket see separate attached Kit installation sheet.

2.2 Water connections

The water heater is suitable for connection to vented, un-vented and pumped pressurized systems. In each case appropriate valves and fittings should be used to ensure the system complies with the governing codes and appropriate building requirements. The maximum working pressure is 7 bars. A typical installation diagram for an un-vented installation is as follows:

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