Buderus S120 US Guide rapide

63013628– 07/2001 US For Plumbers

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Assembly and Maintenance

Instructions

Indirect Fired Hot Water Tank

Model S120 „US“

Imprint

We reserve the right to make any changes due to technical modifications!

Installation and Maintenance Instructions Lo

alux S 120 „US“• Issue 07/2001

Buderus Heiztechnik GmbH • http://www.heiztechnik.buderus.de

The Commonwealth of

Massachusetts requires that

the tank be installed by a

licensed plumber.

NOTICE

Please observe and comply with all local

and state requirements pertaining to the

assembly and operation of an indirect fired

domestic hot water tank!

Buderus Hydronic Systems reserve the right to make

changes due to continued engineering improvement

without notice.

Updating of Product Documentation

Feel free to contact us regarding suggestions for

improvements of this product manual.

Address:

Buderus Hydronic Systems, Inc.

PO Box 647

Salem, NH 03079

http\\www.buderus.net

Document-number.: 6301 3628

Issue: 07/2001

Table of Contents

We reserve the right to make any changes due to technical modifications!

Installation and Maintenance Instructions Lo

alux S 120 „US“• Issue 07/2001

Buderus Heiztechnik GmbH • http://www.heiztechnik.buderus.de

1 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

1.1 Tank Packaging and Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

1.2 Tank Placement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

2 Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

3 Dimensions and Piping Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

4 Assembly and Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

4.1 Safety Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

4.2 Tank Piping Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

4.3 Temperature Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

4.3.1 Installation of Buderus Logamatic FB Sensor or Goldline SP30D Sensor Probe . . . . . . . . . .9

4.3.2 Installation of Honeywell Aquastat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

5 Placing Tank in Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

6 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

6.1 Testing of the Magnesium Anode Rod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

6.2 Tank Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

6.3 Recommissioning after Tank Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

7 Parts Break-down for S120 Tank. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

We reserve the right to make any changes due to technical modifications!

Installation and Maintenance Instructions Lo

alux S 120 „US“• Issue 07/2001

Buderus Heiztechnik GmbH • http://www.heiztechnik.buderus.de

General Information1

1 General Information

1.1 Tank Packaging and Components

The S120 indirect fired hot water tank is a 32 gal glass

lined steel tank. The tank is fully packaged with a high

density foam insulation and steel jacket panel. A Honey-

well aquastat is standard supplied with the tank.

Additional components supplied with the tank are:

1 125 psi P and T valve

3 3/4“ brass couplings

1 3/4“ brass tee

1 Honeywell L4006 adjustable differential tank aquastat

1 Aquastat mounting bracket and 4 mounting screws

3 Adjustable tank leg leveling bolts

1 Roll of high quality teflon tape

1.2 Tank Placement

Install the tank in a dry, frost free room.

Make sure that the tank is completely drained before

taking the tank out of use. Protect from freezing.

Place the tank on a level floor of sufficient strength.

Observe the recommended clearances as shown in

Fig.1. These dimensions are based on ample access for

installation and maintenance (Fig. 1). Maintain a

minimum clearance of 2“ between hot water piping or

tank surface to combustible surfaces.

Fig. 1 Recommended clearance for installation and

maintenance.

500

400

min. 100

16"

Transport 2

We reserve the right to make any changes due to technical modifications!

Installation and Maintenance Instructions Lo

alux S 120 „US“• Issue 07/2001

Buderus Heiztechnik GmbH • http://www.heiztechnik.buderus.de

2 Transport

One can move the tank in its packaging as well as by

itself using a Buderus Kuli cart. (Must be ordered

separately). When using the Kuli cart, place tank on

bottom support and secure tank to the handle bars with

Kuli strap as shown in Fig. 2.



Bring the tank to its destination.



Remove plastic shrink wrap.



Remove top styrofoam piece and wooden corner

posts. Place tank on its side on top of styrofoam

piece.(Fig. 3, Item. 1).



Remove bottom styrofoam piece from pallet.



Scew 3 M10x30 bolts in bottom of tank to serve as

tank leveling legs.(Fig. 3, Item. 3)

Fig. 2 Buderus-boiler-Kuli cart (sample picture)

Fig. 3 Tank on top of styrofoam piece

(measurements in inches)

Item. 1: Styrofoam piece

Item. 2: Tank

Item. 3: Tank leveling bolts

ca.3/4"

2 3

We reserve the right to make any changes due to technical modifications!

Installation and Maintenance Instructions Lo

alux S 120 „US“• Issue 07/2001

Buderus Heiztechnik GmbH • http://www.heiztechnik.buderus.de

Dimensions and Piping Connections3

3 Dimensions and Piping Connections

Tab. 1 Dimensions and connections

*dry weight.

Fig. 4 Dimensions and piping connections (measurements in inches)

20"

37"

3/4" - 1" 20"

37"

3/4" - 1"

Item. 1: Magnesium Anode Rod AB: DHW outlet (short dip tube)

EK: DHW inlet (long dip tube)

VS: boiler supply

RS: boiler return

MB: temperature measuring location (sensor or aquastat)

EL: tank drain

Model VS RS EK/AB Anode Weight*

Lbs

S120 ¾" ¾" ¾" 1" 158

Assembly and Installation 4

We reserve the right to make any changes due to technical modifications!

Installation and Maintenance Instructions Lo

alux S 120 „US“• Issue 07/2001

Buderus Heiztechnik GmbH • http://www.heiztechnik.buderus.de

4 Assembly and Installation



Level tank by adjusting the leveling bolts under the

tank (Fig. 5).

4.1 Safety Requirements

Critical Values

*In the overall system, it is necessary to install a boiler pressure

relief value, expansion tank and P and T valve for the tank.

Fig. 5 Adjusting tank leveling bolts (sample picture)

ATTENTION!

TANK DAMAGE

When exceeding critical values.



One must adhere to the following

critical values for safe operation.

Temperature:

Heating water (boiler) 230 °F

Domestic water (tank) 203 °F

Operating pressure:

Heating water (boiler)* 87 psi

Domestic water (tank) 145 psi

We reserve the right to make any changes due to technical modifications!

Installation and Maintenance Instructions Lo

alux S 120 „US“• Issue 07/2001

Buderus Heiztechnik GmbH • http://www.heiztechnik.buderus.de

Assembly and Installation4

4.2 Tank Piping Installation

1. Install all piping and components per local and state

codes (Fig. 6).



Use threaded connections on all tank fittings. Fittings

are supplied. It is suggested to install shut off valves

in all water lines.



Install the 3/4“ brass tee fitting on the DHW outlet

connection (AB) with the teflon tape provided. Install

P and T valve (Fig. 6, Item. 2) into top of the brass

tee. Pipe the relief line full port to a nearby floor drain.



Add label to P and T relief valve stating: „Relief valve

may release water during heating of the tank“.



Install furnished 3/4“ brass couplings with teflon tape

provided on other three tappings located on top of the

tank. (See Fig. 4 for details)



Periodically test the operation of the P and T valve by

manually opening the valve.



All piping must be installed without undue stress!



Test all piping connections for leaks.

Safety Valve Requirements *

*based on DIN norm 4753.

Fig. 6 Tank piping installation (sample picture)

Item. 1: Tank

Item. 2: P and T valve

Item. 3: Shut off valve with drain

Item. 4: Purge valve / vacuum breaker

Item. 5: Flow valve

Item. 6: Isolation valve

Item. 7: DHW recirculation pump (optional)

Item. 8: Pressure reducing valve (as required)

Item. 9: Test port ( as required per local code)

Item. 10:Back flow preventer ( as required per local code)

Item. 11:Pressure test port ( as required)

Item. 12:Tank drain

AB: DHW outlet

EK: Cold feed

EZ: DHW recirc inlet

EL: Tank drain connection

Minimum

Connection

Size

Net Water Volume Max. Heating

Capacity

Liters/gals Btu/hr

DN 15 (=1/2“) 200/53 255,000

Assembly and Installation 4

We reserve the right to make any changes due to technical modifications!

Installation and Maintenance Instructions Lo

alux S 120 „US“• Issue 07/2001

Buderus Heiztechnik GmbH • http://www.heiztechnik.buderus.de

4.3 Temperature Control

For accurate control of the tank water temperature, one

has the option of using either the sensor supplied with

the Buderus Logamatic control or SP30D control, or the

Honeywell aquastat supplied with the S120 tank.

4.3.1 Installation of Buderus Logamatic FB Sensor

or Goldline SP30D Sensor Probe



Fully insert the suitable DHW sensor (Fig. 7, Item. 2)

together with the tension spacer (Fig. 7, Item. 1)

supplied with the tank into the factory installed tank

well (Fig. 7, Item. 3). Wire sensor leads to suitable

control terminals. (Sensor leads can be extended

using regular thermostat wiring.)

Fig. 7 Installation of temperature sensor

Item. 1: Tension spacer

Item. 2: DHW tank sensor (FB sensor from Logamatic or

SP30D probe)

Item. 3: Tank dry well

NOTICE

Ensure that the entire surface of the

sensor is in contact with the tank well.

We reserve the right to make any changes due to technical modifications!

Installation and Maintenance Instructions Lo

alux S 120 „US“• Issue 07/2001

Buderus Heiztechnik GmbH • http://www.heiztechnik.buderus.de

Assembly and Installation4

4.3.2 Installation of Honeywell Aquastat



Remove cover from aquastat by removing hex head

screw on top.



Secure mounting bracket (Fig. 8, Item. 3) furnished

with tank to base of aquastat (Fig. 8, Item. 2) using

the 2 screws (Fig. 8, Item. 1). (One may need to

remove prior mounting bracket).



Insert aquastat capillary with tension spacer (Fig. 9,

Item. 4 and 5) into tank dry well (Fig. 9, Item. 3).



Secure aquastat assembly (Fig. 9, Item. 2) with 2

screws (Fig. 9, Item. 1) to the tank jacket.



Put aquastat cover back in place.

Fig. 8 Attaching bracket to aquastat

Item. 1: Screws C-ST 4,2 × 13 mm

Item. 2: Aquastat

Item. 3: Bracket

Fig. 9 Installation of Honeywell aquastat

Item. 1: Sheet metal screws C-ST 4,2 × 13 mm

Item. 2: Aquastat

Item. 3: Tank dry well

Item. 4: Aquastat capillary

Item. 5: Tension spacer

NOTICE

Wire the aquastat into suitable control and

set desired DHW tank temperature at

aquastat.

DANGER!

DANGER

due to electricity.



Shut down main switch before working

on the boiler/tank system.

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