Bosch Tronic 3000T ES2.5 Technisches Dokument

6 720 892 061 2019/02 CA

Tronic 3000T

ES 2.5/4/8 CA...

[2] Installation Manual and Operating Instructions

[18] Manuel d'installation et notice d'utilisation

Table of contents

Tronic 3000T – 6 720 892 061 2019/02

Table of contents 1 Explanation of symbols and safety

information

1.1 Key to symbols

Warnings

Inwarnings,signalwordsatthebeginningofawarningareused

to indicate the type and seriousness of the ensuing risk if

measures for minimising danger are not taken.

The following signal words are defined and can be used in this

document:

DANGER:

DANGERindicates a hazardous situation which, if not avoided,

will result in death or serious injury.

WARNING:

WARNING indicates a hazardous situation which, if not

avoided, could result in death or serious injury.

CAUTION:

CAUTIONindicatesahazardoussituationwhich,ifnotavoided,

could result in minor or moderate injury.

NOTICE:

NOTICE is used to address practices not related to personal

injury.

Important information

Theinfosymbol indicates important informationwhere there is

no risk to people or property.

Additional symbols

Table 1

1.2 Safety information

1 Explanation of symbols and safety information . . . . . 2

1.1 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Information about the product . . . . . . . . . . . . . . . . . . . 5

2.1 Models overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.2 Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.3 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3 Installation instructions . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.1 Mounting the heater. . . . . . . . . . . . . . . . . . . . . . . . . 8

3.2 Pipe connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.3 Closed system thermal expansion . . . . . . . . . . . . . 9

3.4 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . 9

4 Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.1 Starting and testing . . . . . . . . . . . . . . . . . . . . . . . . 10

4.2 Temperature setting. . . . . . . . . . . . . . . . . . . . . . . . 10

5 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

5.1 Removing the cover . . . . . . . . . . . . . . . . . . . . . . . . 10

5.2 Draining the heater . . . . . . . . . . . . . . . . . . . . . . . . 10

5.3 Inspecting the anode rod. . . . . . . . . . . . . . . . . . . . 10

5.4 Removing the heating element . . . . . . . . . . . . . . . 11

5.5 Descaling the heating element . . . . . . . . . . . . . . . 11

6 Replacement of parts . . . . . . . . . . . . . . . . . . . . . . . . . . 12

6.1 Changing the anode rod. . . . . . . . . . . . . . . . . . . . . 12

6.2 Changing the heating element. . . . . . . . . . . . . . . . 12

6.3 Changing the thermostat. . . . . . . . . . . . . . . . . . . . 12

7 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

7.1 Resetting High Limit Switch. . . . . . . . . . . . . . . . . . 14

8 Bosch interior component diagram. . . . . . . . . . . . . . . 15

9 Bosch Tronic 3000T LIMITED WARRANTY. . . . . . . . . 16 Symbol Meaning

▶ a step in an action sequence

a reference to a related part in the document

• a list entry

– a list entry (second level)

Explanation of symbols and safety information

Tronic 3000T – 6 720 892 061 2019/02

CAUTION:

When using electrical appliances, safety

precautions to reduce the risk of fire,

electric shock or injury to persons

should be followed, including:

▶ READ ALL INSTRUCTIONS BEFORE

USING THIS WATER HEATER.

▶ This water heater must be grounded.

Connect only to properly grounded

outlet. See "GROUNDING

INSTRUCTIONS" found on

"INSTALLATION INSTRUCTIONS" .

▶ Install or locate this water heater only

provided installation instructions.

▶ Use this water heater only for its

intended use as described in this

manual.

▶ The models ES2.5 and ES4 come

equipped with a power cord. Do not

use an extension cord. If no outlet is

availableadjacenttothewaterheater,

contact a qualified electrician to have

oneproperlyinstalledneartheheater.

The model ES8 must be hard-wired.

See installation instructions.

▶ As with any appliance, close

supervision is necessary when used

by children.

▶ Donotoperatethiswaterheaterif itis

has a damaged cord or plug, if it is not

working properly, or if it has been

damaged or dropped.

▶ This water heater should be serviced

only by qualified service personnel.

Contact a service person for

examination, repair or adjustment.

▶ Failure to inspect the anode rod at

least once a year could cause the tank

to fail and leak. This condition is not

covered under the manufacturer's

warranty.

▶ Any water heater should be installed

in such a manner that if it should leak,

the resulting flow of water will not

causedamage totheareainwhichit is

installed. National Plumbing codes

require a drain pan for any water

heater installation. Failure to install

one is the sole responsibility of owner

and/orinstaller.ReferenceUPC2006

(Uniform Plumbing Code) Section

508.1, or IPC 2006 (International

Plumbing Code) Section 504.7.

NOTICE:

▶ The installer should review the

contents of this manual with the

owner upon completion of

installation,andthemanualshouldbe

left with the owner and placed in a

location close to the installation.

Explanation of symbols and safety information

Tronic 3000T – 6 720 892 061 2019/02

NOTICE:

▶ The manufacturer cannot be

responsible for the damages caused

by improper installation or by failure

to follow instructions in this manual.

Comply with the installation

instructions before completing

electric connection.

NOTICE:

▶ The thermostat has been pre-set at

the factory at a temperature equal or

below 60 °C (140 °F).

DANGER:

▶ Hydrogen gas can be produced in a

hot water system served by this

heater that has not been used for a

longperiodoftime(generally2 weeks

or more). Hydrogen gas is extremely

flammable. To reduce the risk of

injury under these conditions, it is

recommended that the hot water

faucet be opened for several minutes

at the kitchen sink before using any

electrical appliance connected to the

hot water system. If hydrogen gas is

present, there will probably be an

unusual sound such as air escaping

through the pipe as the water begins

to flow. There should be no smoking

or open flame near the faucet at the

time it is open.

CAUTION:

▶ Any water heater should be installed

in such a manner that if it should leak,

the resulting flow of water will not

causedamage totheareainwhichit is

installed. National Plumbing codes

require a drain pan for any water

heater installation. Failure to install

one is the sole responsibility of owner

and/orinstaller.ReferenceUPC2006

(Uniform Plumbing Code) Section

508.1, or IPC 2006 (International

Plumbing Code) Section 504.7.

CAUTION:

▶ Prior to connecting the power supply,

ensuretank is full of waterandsystem

is purged of air.

NOTICE:

▶ Tank failure due to neglecting to

maintain the anode rod is not covered

under warranty (see Section 5

Maintenance).

Information about the product

Tronic 3000T – 6 720 892 061 2019/02

2 Information about the product

2.1 Models overview

Models ES2.5 and ES4

Fig. 1

[1] Temperature & pressure relief valve, ¾ NPT male

[2] Cold water inlet ½ NPT male

[3] Thermostat

[4] Temperature & pressure relief valve discharge line to

drain

[5] ¾ NPT female tapping for relief valve

[6] Hot water outlet ½ NPT male

Models ES8 (Horizontal installation)

Fig. 2

[1] Temperature & pressure relief valve, ¾ NPT male

[2] Cold water inlet ¾ NPT male

[3] Thermostat

[4] Temperature & pressure relief valve discharge line to

drain

[5] ¾ NPT female tapping for relief valve

[6] Hot water outlet ¾ NPT male

[7] ¾ NPT male plug

[8] ¾ NPT female tapping for tap

Models ES8 (Vertical installation)

Fig. 3

[1] Temperature & pressure relief valve, ¾ NPT male

[2] Cold water inlet ½ NPT male

[3] Thermostat

[4] Temperature & pressure relief valve discharge line to

drain

[5] ¾ NPT female tapping for relief valve

[6] Hot water outlet ½ NPT male

[7] Hot water outlet ½ NPT male

[8] Hot water outlet ½ NPT male

Information about the product

Tronic 3000T – 6 720 892 061 2019/02

2.2 Dimensions

Models ES2.5 and ES4 (Vertical installation only)

Fig. 4

Models ES8 (Horizontal installation only)

Fig. 5

10 ¾”

6¼”

3½”

13 ½”

9”

3½”

2½”

2 ½”

3¾”

13 ¾”

½ NPT male

13 ¾”

5”

1”

6720801072-04.1V

ES2.5 ES4

Information about the product

Tronic 3000T – 6 720 892 061 2019/02

Models ES8 (Vertical installation only)

Fig. 6

2.3 Technical data

Table 2

Technical data Units ES 2.5 ES 4 ES 8

Capacity gallons 2.7 4.0 7.0 (Hor.) / 5.1 (Vert.)

Voltage VAC 110/120 for each model

Power at 120 VAC Watts 1440

Maximum water pressure psi 150

Weight (empty) Lbs 15.5 17.3 29.5

Amperage Amps 12.0 for each model

Phases 1

Temperature range °F 65 - 145

Recovery rate gallons/hour 6.8

Installation instructions

Tronic 3000T – 6 720 892 061 2019/02

3 Installation instructions

The ES2.5 and ES4 water heaters are designed to be installed

under the sink.

3.1 Mounting the heater

3.1.1 Wall mounting

▶ Fasten the supplied mounting bracket to the wall.

NOTICE:

Material damages!

▶ Use screws that are suitable for the wall material and the

weight of the heater.

▶ Hang the water heater on the bracket.

▶ Tug down wards on the heater to ensure that both “fingers”

of the bracket are seated in the mounting slots.

3.1.2 Floor mounting

▶ Heater can sit on floor.

3.2 Pipe connections

▶ Connect the cold water inlet pipe to the inlet tapping

(marked with a blue ring).

▶ Ensurea isolation valveis installedon thecold watersupply

to the water heater.

▶ Connect the hot water outlet pipe to the outlet tapping

(marked with a red ring).

The model ES8 can be piped horizontally from the side or

vertically from the top.

Horizontal installation - ES8 Model Only

If you wish to install the unit horizontally, with the piping

connections on the right side:

▶ Install supplied brass plug into tap between hot and cold

water connections.

▶ The supplied Temperature and Pressure Relief Valve will

need to be installed on top. See location of T&P relief valve

in Fig. 6.

Vertical installation

If you wish to install the unit vertically, with the piping

connections on top:

▶ Install supplied brass plug into tap on side of water heater.

▶ The supplied Temperature and Pressure Relief Valve will

need to be installed on top. See location of T&P relief valve

inFig. 4 and Fig. 5.

Caution

CAUTION:

To reducetheriskofexcessive pressures and temperatures

in this water heater:

▶ Install the supplied temperature and pressure protective

equipment required by local codes but not less than a

combination temperature and pressure relief valve

certified by a nationally recognized testing laboratory that

maintains periodic inspection of production of listed

equipment or materials, as meeting the requirements for

Relief Valves and Automatic Gas Shut-off Devices for Hot

Water Supply Systems, ANSIZ21.22.

The supplied temperature and pressure relief valve is marked

with a maximum set pressure (150 psi) that does not exceed

the marked maximum working pressure of the water heater.

▶ Installthevalvein the opening providedand markedforthis

purpose in the water heater.

▶ Orient it or provide tubing so that any discharge from the

valve will exit within 6 inches above, or at any distance

below, the structural floor, and cannot contact any live

electrical part. The discharge opening must not be blocked

or reduced in size under any circumstances.

National Plumbing codes may require a drain pan for the water

heater installation. Failure to install one is the sole

responsibility of owner and/ or installer. Reference UPC

(Uniform Plumbing Code), or IPC (International Plumbing

Code).

Installation instructions

Tronic 3000T – 6 720 892 061 2019/02

3.3 Closed system thermal expansion

Periodic discharge of the temperature and pressure relief valve

or failure of the element gasket may be due to thermal

expansion in a closed water supply system. The water utility

supply meter may contain a checkvalve, backflow preventer or

water pressure reducing valve which will create a closed water

system.

During the heating cycle of the water heater, the water expands

causing pressure inside the water heater to increase. The

temperature and pressure relief valve may discharge hot water

under these conditions which results in a loss of energy and a

build-up of lime on the relief valve seat.

To prevent this from happening, there are two

recommendations:

1. Install a diaphragm-type expansion tank that is suitable for

potable water on the cold water supply line. A minimum 0.5

gallon expansion tank should be used.

Contact the local water supplier or plumbing inspector for

information on how to control this situation. Do not plug the

temperature and pressure relief valve.

3.4 Electrical connections

TheES8model must be hard wired.As per the National Electric

Code the ES8 needs to be wired with 12 GA. wire to a 20 amp

branch circuit.

▶ Unscrew the junction box cover and remove it.

▶ Insert 12 AWG through conduit into junction box and

secure with conduit strain relief (not supplied).

▶ Connect the wires and screw on the cover of the junction

box.

▶ Make appropriate wiring connections to the water heater

per the National Electric Code.

The unit must be grounded with supplied grounding cable

inside junction box.

▶ Secure junction box cover once wiring connections have

been made.

When the ES8 is not within sight of the electrical circuit

breakers, a circuit breaker lockout or additional local means of

disconnection for all non grounded conductors must be

provided that is within sight of the appliance. [REF NEC

422.31].

Fig. 7

[1] Cable housing (internal to the unit)

[2] Wiring

[3] Protection ring for wiring.

[4] Additional grounding cable AWG16

(minimum length 152mm)

[5] Junction box left cover

[6] Nº3self tappingscrewforjunctionboxcoversfixing(with

lock washer or serrated head)

[7] Junction box right cover

[8] Nº1 self tapping screw for grounding

(with lock washer or serrated head)

[9] Nº4 screws for junction box fixing

[10] Junction box

[11] Housing for junction box (in the plastic front cover)

2 3 4 5

6720801072-14.1V

Use

Tronic 3000T – 6 720 892 061 2019/02

4 Use

4.1 Starting and testing

CAUTION:

DO NOT supply power to water heater until filled with water.

To fill the heater:

▶ Open supply valve for water heater to fill with water.

▶ Open hot water tap(s) supplied by the water heater to

purge air out of the system. Once air is purged, close hot

water tap.

▶ Visually check for any leaks.

Turning heater on

For models which are not fitted with a switch:

▶ Supply power to the water heater by plugging in the power

cord (models ES2.5, ES4) or turning on the circuit breaker

(model ES8). If the light does not come on, turn the control

knob in a clockwise direction.

The light will come on until water temperature has reached

the thermostat temperature setting. The light will come

back on any time the water temperature inside the tank

drops below the thermostat setting.

4.2 Temperature setting

The temperature of the hot water is adjusted by rotating the

knob M located on the front cover. Temperature range is 65 -

145 °F.

▶ Turn the knob clockwise to increase temperature.

▶ Turn the knob counter-clockwise to decrease temperature.

Fig. 8

5 Maintenance

CAUTION:

Do not attempt to repair this water heater yourself. Call a

service person forassistance. Always turn off the powersupply

to the heater prior to servicing or draining the heater.

Periodic maintenance

For most of these operations, the water will have to be drained

from the heater. For all of these operations the cord should be

disconnected (ES2.5 and ES4 only) and the front cover

removed.

5.1 Removing the cover

▶ Pry off the round cover plate [V] from its right hand edge

[W] with a small flat-head screwdriver.

▶ Remove the Phillips screw revealed beneath the round

cover plate.

▶ The cover [C] can now be removed by pulling out its left-

hand edge. When reassembling, work in the opposite way

being careful to insert the tongue of the cover into the slot.

5.2 Draining the heater

If the heater has been installed with flexible hoses:

▶ Shut off the power supply.

▶ Turn the heater upside down over a sink to drain the water

out of it.

-or-

it can also be emptied by:

▶ Siphon through the inlet side hose.

▶ Keep a hot water faucet open while siphoning.

-or-

If the heater has been installed with rigid piping:

▶ Siphon the water out through any (lower) service valve on

the (inlet side).

▶ Keepa hot waterfaucet open whilesiphoningthewaterout.

5.3 Inspecting the anode rod

The purpose of the anode rod (Fig. 11,[N]) is to protectthe

tank against corrosion. It is critical that the anode rod be

inspected once a year to determine whether it requires

replacement. To access the anode rod, the heating element

must be removed (see Section 5.4 Removing the heating

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