Bosch T4200 14-2D Mode d’emploi

Installation and Users Instructions

Gas Instantaneous Water Heater

Therm 4200

T4200 11/14/18-2D

6 720 821 605 (2017/08) ZA

Table of contents

Therm 4200 – 6 720 821 605 (2017/08)

Table of contents

1 Key to symbols and safety instructions . . . . . . . 3

1.1 Key to symbols . . . . . . . . . . . .. . . . . . . . . . . .. . . . 3

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

2 Technical Characteristics and Dimensions . . . . 6

2.1 Type overview . . . . . . . . . . . . .. . . . . . . . . . . .. . . . 6

2.2 Material attached . . . . . . . . . .. . . . . . . . . . . .. . . . 6

2.3 Type plate . . . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . 6

2.4 Description of appliance . . . . . . . . . . .. . . . . . . . . . 6

2.5 Accessory (not supplied with the appliance) . . . . 6

2.6 Dimensions . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . 7

2.7 Electrical diagram . . . . . . . . . .. . . . . . . . . . . .. . . . 8

2.8 Function . . . . . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . 8

2.9 Technical Data . . .. . . . . . . . . . . . .. . . . . . . . . . . . . 9

3Use. . . . . . . . . . . .. . . . . . . . . . . . .. . . . . . . . .. . . 10

3.1 Digital display - description . . . . . . . .. . . . . . . . . 10

3.2 Batteries . . . . . . . . . . . . . .. . . . . . . . . . . .. . . . . . 10

3.3 Before starting up the heater . . . . . . . . . . . . .. . . 10

3.4 Turning the heater on and off .. . . . . . . . . . . .. . . 10

3.5 Water flow . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . 11

3.6 Power adjustment . . . . . . . . . . . . .. . . . . . . . . . . . 11

3.7 Temperature/flow adjustment . . . . . . . . .. . . . . . 11

4Regulations. . . . . . . . . . .. . . . . . . . . . . .. . . . . . 11

5 Installation (must be carried out only by 

qualified technicians) . . . . . . . . . . . . . . . . . .. . . 12

5.1 Important information . . . . . . . . . . . . . . .. . . . . . 12

5.2 Selection of location for installation . . . . . . . . . . 12

5.3 Fixing the appliance . . . . . . . . . . .. . . . . . . . . . . . 13

5.4 Water connection . . . . . . .. . . . . . . . . . . .. . . . . . 13

5.5 Hydrogenerator operation . . . . . . . . . . . .. . . . . . 14

5.6 Gas connection . . . . . . . . . . . .. . . . . . . . . . . .. . . 14

5.7 Commissioning . . . . . . . . . . . . . . .. . . . . . . . . . . . 14

6 Adjustments (must be carried out only by . . . .. .

qualified technicians) . . . . . . . . . . . . .. . . . . . . . . . . .. . . 15

6.1 Factory regulations . . . . . .. . . . . . . . . . . .. . . . . . 15

6.2 Pressure regulation . . . . . . . . . . . . . . . . . .. . . . . . 15

6.3 Conversion to a different type of gas . . . . . . . . . . 16

7 Maintenance (must be carried out only by . . . . . .

qualified technicians) . . . . . . . . . .. . . . . . . . .. . . . . . . . . 16

7.1 Periodic maintenance tasks . . . . . . . . . . . . . . .. . 16

7.2 Startup after maintenance work . . . . . . . . . . . . . 16

7.3 Heater purge . . . . . . . . . . . . . .. . . . . . . . . . . . .. . 16

7.4 Flue gas safety device . . . . . . .. . . . . . . . . . . . .. . 17

7.5 Safe operation/ risk for prolonged use . . . . . . . . 17

8Problems. . . . . . . . . . . . .. . . . . . . . . . . . .. . . . . 18

8.1 Problem/cause/solution . .. . . . . . . . . . . . .. . . . . 18

9 Environment / disposal . . . . . . . . . . . . . .. . . . . 19

10 Warranty Terms . . . . . . . . . .. . . . . . . . . . . . .. . 19

Key to symbols and safety instructions

Therm 4200 – 6 720 821 605 (2017/08)

1 Key to symbols and safety instructions

1.1 Key to symbols

Warnings

Warnings in this document are identified by

a warning triangle printed against a grey

background.

Keywords at the start of a warning indicate

the type and seriousness of the ensuing risk

ifmeasurestopreventtheriskarenottaken.

The following keywords are defined and can be used in this

document:

•NOTICEindicatesasituationthatcouldresultindamageto

property or equipment.

•CAUTIONindicatesa situationthat could result in minorto

medium injury.

•WARNING indicates a situation that could result in severe

injury or death.

•DANGER indicates a situation that willresult in severe

injury or death.

Important information

Thissymbolindicatesimportantinformation

where there is no risk to people or property.

Additional symbols

Table 1

Symbol Explanation

▶Step in an action sequence

Cross-reference to another part of the document

•List entry

–List entry (second level)

1.2 Safety information

Important

▶ Read these instructionsfor use

carefully so as to familiarize yourself

with the appliance before connecting

it to its gas container.

▶ Keep these instructions for future

reference.

If there is a smell of gas:

▶ Close the gas valve.

▶ Open windows.

▶ Do not connect any electrical

appliance.

▶ Extinguish any naked flames.

▶ Phone the gas company or an

authorized technician from a safe

distance.

If there is a smell of burnt gases:

▶ Disconnect the appliance.

▶ Open doors and windows.

▶ Inform an installation company.

Fitting, modifications

▶ The fitting and modification of the

installation of the appliance must be

carried out only by an authorized

technician.

▶ The installation of the water heater

may only be carried out by a

registered installer and that such

installations shall comply with the

requirements of SANS 10087-1.

▶ The pipes carrying burnt gases must

not be modified.

▶ Do not close or reduce air circulation

holes.

Key to symbols and safety instructions

Therm 4200 – 6 720 821 605 (2017/08)

Maintenance

▶ The user must maintain and

periodically service the appliance.

▶ The user is responsible for the safety

and environmental compatibility of

the installation.

▶ The appliance should be serviced

annually.

▶ Only original spare parts should be

used.

Explosive and inflammable materials

▶ Inflammable materials (paper,

solvents, ink, etc.) should not be

stored near the appliance.

Combustion air and ambient air

▶ To avoid corrosion, combustion air

and ambient air should be free of

aggressive substances (for example

halogenated hydrocarbons

containing chlorine and fluoride

composites).

Important information for the user

▶ This appliance may only be installed

by a registered LP Gas installer.

▶ All registered installers are issued

with a card carrying their registration

number.

▶ Ask to be shown the card before

allowing the installation work to

commence and make a note of the

Installer QCC number. Upon

completion of the installation, the

installer is required to explain the

operational details of the appliance

together with the safety instructions.

You will be asked to sign acceptance

of the installation and be provided

with a completion certificate. You

shouldonlysignforacceptanceofthe

installation when the installation is

completed to your satisfaction.Note

that your invoice is required in the

eventthatyouwishmakeaguarantee

claim.

Important information for the

installer

▶ This appliance may only be installed

by a LP gas installer registered with

the Liquefied Petroleum Gas

Association of Southern Africa.

▶ The appliance must be installed in

accordance with the requirements of

SANS 10087-1 and any fire

department regulations and/or local

by laws applicable to the area. If in

doubt check with the relevant

authority before undertaking the

installation.

▶ Upon completion of the installation

you are required to fully explain and

demonstrate to the user the

operational details and safety

practices applicable to the appliance

and the installation.

Client information

▶ Inform the client about the function

and operation of the appliance.

▶ Caution clients against performing

modifications or repairs themselves.

Key to symbols and safety instructions

Therm 4200 – 6 720 821 605 (2017/08)

Safety of electrical appliances for

domestic use and similar purposes

The following requirements apply in

accordancewithEN60335-1inorderto

prevent hazards from occurring when

using electrical appliances:

“This appliance can be used by children

of8yearsandolder,aswellasbypeople

with reduced physical, sensory or

mental capabilities or lacking in

experience and knowledge, if they are

supervised and have been given

instruction in the safe use of the

appliance and understand the resulting

dangers.Childrenmustnotplaywiththe

appliance. Cleaning and user

maintenance must not be performed by

children without supervision.”

“If the power cable is damaged, it must

be replaced by the manufacturer, its

customer service department or a

similarly qualified person, so that risks

are avoided.”

Technical Characteristics and Dimensions

Therm 4200 – 6 720 821 605 (2017/08)

2 Technical Characteristics and

Dimensions

2.1 Type overview

Table 2

T4200 11 -2 D23

T4200 14 -2 D23

T4200 18 -2 D23

[T] Gas instantaneous water heater

[4200] Series

[11] Capacity (l/min)

[-2] Version

[D] Digital display

[23] Appliance set for natural gas

[31] Appliance set for LPG

2.2 Material attached

•Gaswaterheater

• Fixing elements

• Connections elements

• Documentation

• Two 1.5 V batteries type R

2.3 Type plate

Thetypeplateislocatedontheleft side of the appliance, on the

bottom.

It contains details of the output of the appliance, the order

number, the approvaldata and the date of manufacture in

encoded form (FD).

2.4 Description of appliance

Operating convenience, as the heater is ready to operate by

simply pressing a switch.

• Heater for wall-mounting

• Ignitionbyelectronicdevicetriggeredwhenthewatervalve

opens

• Gauge to display temperature, burner operation and

malfunctions

• Temperature sensor to monitor the water temperature at

the heater output

• Great savings in comparison with conventional heaters,

due to the possibility of power adjustment and no

permanent pilot flame

• Natural gas/LPG burner

• Semi-permanent pilot burner which only functions during

the period between the opening of the water valve and the

ignition of the main burner

• Heat exchanger without tin/lead covering

• Water valve in fibreglass-reinforced polyamide, 100%

recyclable

• Automatic adjustment of the water flow by means of a

device which permits a constant flow to be maintained in

spite of variable pressure supplies

• Gas flow adjustment proportional to the water flow to

maintain a constant high temperature.

•Safetydevices:

– Ionisation probe to check foraccidental extinction of

the burner flame

– Fluegassafetydevicewhichturnsofftheheaterincase

of inadequate combusted gas evacuation conditions

– Temperaturelimiterwhichpreventsoverheatingof the

heat exchanger

2.5 Accessory (not supplied with the appliance)

• Conversion kit from natural gas to butane/propane and

vice-versa.

Technical Characteristics and Dimensions

Therm 4200 – 6 720 821 605 (2017/08)

2.6 Dimensions

Fig. 1

[4] Heat exchanger

[5] Burner

[10] Temperature/volume selector

[20] Gas connection

[23] Ignition unit

[24] Battery compartment

[26] Power selector

[34] LED - Burner status check

[35] Switch / LED - Battery status check

[36] Front cover

[37] Hole for fixing to wall

[38] Exhaust pipe union

[39] Flue with non-return device

[40] Gas valve

[42] Digital display

Table 3 Dimensions

Dimensions (mm) A B C D E F G H (Ø)

Natural gas LPG

T4200 11-2D... 310 580 228 112,5 463 60 25 1/2”

T4200 14-2D... 350 655 228 125 510 95 30 1/2”

T4200 18-2D... 425 655 334 125 540 65 30 1/2”

Technical Characteristics and Dimensions

Therm 4200 – 6 720 821 605 (2017/08)

2.7 Electrical diagram

Fig. 2 Electrical diagram

[2] Spark plug

[3] Ionisation probe

[15] Micro-switch

[23] Ignition unit

[24] Battery compartment

[25] Servo valve (normally open)

[28] Gas valve (normally closed)

[31] Temperature limiter

[32] Flue gas safety device

[33] Diaphragm valve

[34] LED - Burner status check

[35] Switch / LED - Battery status check

[41] Temperature sensor

[42] Digital display

2.8 Function

This gas heater is equipped with automatic electronic ignition

which simplifies its operation.

▶ To do so, just turn on the switch (Fig. 6).

Afterthis procedure,automatic ignition occurswhenever a hot

water tap is opened. First, the pilot burner is lit and

approximately four seconds afterwards the main burner. The

pilot burner flame is then extinguished after a short period of

time.

This is a way of saving a great amount of energy as the pilot

burner only operates for the minimum necessary time to ignite

the main burner, in contrast to conventional systems which

operate permanently.

Air in the gas supply pipe when the heater is

started up may cause ignition to fail.

If this happens:

▶ Close and open the hot water tap to repeat the ignition

process until all the air has been purged.

Technical Characteristics and Dimensions

Therm 4200 – 6 720 821 605 (2017/08)

2.9 Technical Data

Table 4

Technical Data Symbol Units T4200 11-2D T4200 14-2D T4200 18-2D

Output and heat demand

Rated max. heat output Pn kW

(Btu/h) 19,2

(65570) 23,6

(80595) 30,5

(104165)

Rated min. heat output Pmin kW

(Btu/h) 7,0

(23905) 9,0

(30710) 9,3

(31733)

Output (modulation range) kW

(Btu/h) 7 - 19,2

(23905-65570) 9,0 - 23,6

(30710-80595) 9,3 - 30,5

(31733-104165)

Rated max. heat input Qn kW

(Btu/h) 21,8

(74450) 27,0

(92210) 34,5

(117825)

Rated min. heat input Qmin kW

(Btu/h) 9,5

(32415) 10,4

(35486) 10,8

(36851)

Gas supply specifications1)

1) Hi 15 °C - 1013 mbar - dry: Natural gas 34.2 MJ/m3(9.5 kWh/m3) 

LPG: Butane 45.72 MJ/kg (12.7 kWh/kg) - Propane 46.44 MJ/kg (12.9 kWh/kg)

Supply pressure

Natural gas H G20 kPa 2,0 2,0 2,0

LPG (butane/propane) G30/G31 kPa 2,8 2,8 2,8

Consumption

Natural gas H G20 m3/h 2,2 2,77 3,5

LPG (butane/propane) G30/G31 kg/h 1,75 2,2 2,79

Number of injectors 12 14 18

Water system specifications

Max. water pressure2)

2) Considering the water dilution effect this value must not be exceeded

pw MPa 1,2 1,2 1,2

Temperature control at maximum setting

Temperature increase °C 50 50 50

Flow range l/min 2 - 5,5 2 - 7 2 - 8,8

Min. operating pressure pwmin MPa 0,01 0,01 0,02

Minimum pressure for maximum flow MPa 0,025 0,035 0,05

Temperature control at minimum setting

Temperature increase °C 25 25 25

Flow range l/min 4 - 11 4 - 14 4 - 17,6

Min. operating pressure MPa 0,02 0,02 0,02

Minimum pressure for maximum flow MPa 0,06 0,1 0,13

Flue specifications3)

3) For nominal calorific power

Draught requirement MPa 0,0015 0,0015 0,0015

Flow rate g/s 13 17 22

Temperature °C 160 170 180

Use

Therm 4200 – 6 720 821 605 (2017/08)

3Use

Open all water and gas blocking devices. 

Purge the pipes.

CAUTION: The area in front of the burner

canreachveryhightemperatures,andthere

is a risk of burning on contact.

3.1 Digital display - description

Fig. 3 Digital display

[1] Temperature/error code

[2] Malfunction indicator

[3] Temperature measurement units

[4] Heater in operation (burner turned on)

3.2 Batteries

Battery insertion

▶ Insert the two 1.5 V R20 batteries.

Fig. 4 Inserting the batteries

Replacing the batteries

The batteries must be changed if the red LED starts flashing.

Fig. 5 Replacing the batteries

Precautions when using the batteries

• Do not dispose of batteries as domestic waste. Take them

to appropriate collecting places for recycling.

• Do not insert flat batteries.

• Only use the type of batteries indicated.

3.3 Before starting up the heater

CAUTION:

▶ The initial startup of the heater must be

realized by a qualified technician, who

will provide the client with all the

information necessary for its correct

usage.

▶ Check if the gas indicated on the type plate is the same as

the one used at the location.

▶ Open the gas valve.

▶ Open the water valve.

3.4 Turning the heater on and off

Turning on

▶ Press the switch , position .

Fig. 6

Green light on = Main burner on

Ce manuel convient aux modèles suivants

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