Rating of gas water heaters with a closed combustion chamber

A water heater with a closed com­bus­tion cham­ber allows you to get unlim­it­ed amounts of hot water, it can be used in a pri­vate house, in an apart­ment and in indus­tri­al premis­es. This design does not take air from the room, has a 2‑stage pro­tec­tion sys­tem, and exhaust gas­es are forcibly sent out­side the room. Mod­ern mod­els allow you to adjust the tem­per­a­ture of hot water to the desired val­ues. It is impor­tant to choose the best option for a par­tic­u­lar room. Devices from brands such as Aris­ton, Bosch and Beretta are high­ly pop­u­lar with con­sumers. This arti­cle will dis­cuss the most pop­u­lar mod­i­fi­ca­tions of these brands.

Bosch

Flow­ing gas water heaters with a closed com­bus­tion cham­ber man­u­fac­tured by Bosch are right­ful­ly con­sid­ered sales lead­ers for sev­er­al years. The DHW prepa­ra­tion process is ful­ly auto­mat­ed, by means of sen­sors and an elec­tron­ic mod­ule. A closed cham­ber is equipped with water heaters of the Bosch Therm line, rep­re­sent­ed by three mod­els and five mod­i­fi­ca­tions.
Therm 4000 S WTD 12 AM E 23

Therm 4000 S WTD 12 AM E 23

Rating of gas flow heaters with a closed combustion chamber
Therm 4000 S WTD 12 AM E 23

[gallery2 link=»file» size=»large» ids=»14399,14400,14401″]

Net pow­er

7 to 17.4 kW

Ther­mal out­put

20 kW

Per­for­mance

13 liters per minute, when heat­ed up to +25 C

DHW tem­per­a­ture

25 to 60 degrees C

Para­me­ters p of water

up to 12 bar

Max­i­mum gas pres­sure

30 mbar

Therm 4000 S WTD 15 AM E 23

Rating of gas flow heaters with a closed combustion chamber
Therm 4000 S WTD 15 AM E 23

[gallery2 link=»file» size=»large» ids=»14403,14404″]

Net pow­er

7 to 22.6 kW

Ther­mal per­for­mance

26 kW

Per­for­mance

14 liters per minute, when heat­ed to +25 C

DHW tem­per­a­ture val­ues

25 to 60 degrees C

Para­me­ters p of the liq­uid

up to 12 bar

Max­i­mum gas pres­sure

30 mbar

Therm 4000 S WTD 18 AM E 23

Rating of gas flow heaters with a closed combustion chamber
Therm 4000 S WTD 18 AM E 23

[gallery2 link=»file» size=»large» ids=»14406,14407,14408″]

Net pow­er

7 to 27.9 kW

Ther­mal out­put

31.7 kW

Per­for­mance

16 liters per minute, when heat­ed up to +25 C

DHW tem­per­a­ture

25 to 60 degrees C

Para­me­ters p of water

up to 12 bar

Max­i­mum gas pres­sure

30 mbar

Euro­pean con­sumers quick­ly appre­ci­at­ed the qual­i­ty and func­tion­al­i­ty of this line of Ger­man Bosch speak­ers, their rat­ing is 5. House­hold appli­ances of this brand are reli­able, durable and have high-qual­i­ty func­tion­al­i­ty. Heat exchang­ers are made of cop­per using ultra­son­ic sol­der­ing tech­nol­o­gy, their ser­vice life is at least 15 years. The cur­rent infor­ma­tion is dis­played on the LCD dis­play. The devices have an effec­tive self-diag­no­sis sys­tem. The Therm 4000 S range of prod­ucts are sim­i­lar in design and dif­fer only in terms of per­for­mance, each of them will effec­tive­ly pro­vide water to a facil­i­ty with cor­re­spond­ing needs.

Therm 6000S

Rating of gas flow heaters with a closed combustion chamber
Therm 6000S

[gallery2 link=»file» size=»large» ids=»14410,14411,14412″]

Net pow­er

From 6 to 42 kW

Ther­mal per­for­mance

48.4 kW

Per­for­mance

24 liters per minute, when heat­ed to +25 C

DHW tem­per­a­ture val­ues

25 to 60 degrees C

Para­me­ters p of the liq­uid

up to 12 bar

Max­i­mum gas pres­sure

20 mbar

The lim­it­ed area of ​​use of the Therm 6000 S indus­tri­al water heater was the rea­son for the reduc­tion of the rat­ing to 4.

Therm 8000S

Rating of gas flow heaters with a closed combustion chamber
Therm 8000S

[gallery2 ids=»14414,14415,14416″]

Net pow­er

From 6 to 47 kW

Ther­mal out­put

51 kW

Per­for­mance

27 liters per minute, when heat­ed up to +25 C

DHW tem­per­a­ture

25 to 60 degrees C

Para­me­ters p of water

up to 12 bar

Max­i­mum gas pres­sure

20 mbar

The Therm 8000 S imple­ments an inno­v­a­tive method for effi­cient water heat­ing, which gives an effi­cien­cy of 100%. Addi­tion­al­ly, the device has an elec­tric dri­ve for the water valve. These fac­tors led to the high­est user rat­ing — 5.

All water heaters have a sim­i­lar secu­ri­ty sys­tem:

• ion­iza­tion device con­trols the pres­ence of a flame;
• a spe­cial sen­sor con­trols the tem­per­a­ture regime in the chim­ney and, if nec­es­sary, sends a sig­nal to the clos­ing valve;
• the heat exchang­er heat­ing sen­sor sends a sig­nal to the con­trol unit when the tem­per­a­ture is exceed­ed, the con­trol unit per­forms block­ing;
• tem­per­a­ture sen­sors are installed on the inlet and out­let pipes.

Impor­tant! A poten­tial own­er of a gas-pow­ered water heater should not save on house­hold appli­ances with­out a pro­tec­tion sys­tem. Ensur­ing the safe­ty of the home is the main task, there­fore, the more com­plex the sys­tem, the greater the pro­tec­tion pro­vid­ed to real estate and house­hold mem­bers.

Ariston

The Ital­ian man­u­fac­tur­er sup­plies the Euro­pean mar­ket with only one mod­el of a gas water heater with a closed com­bus­tion cham­ber — Next EVO, but in two ver­sions — SFT 11 NG EXP and SFT 14 NG EXP. This new gen­er­a­tion device is designed tak­ing into account the pecu­liar­i­ties of Euro­pean con­di­tions, it will be able to pro­vide effi­cient water sup­ply, even when the water flow changes. It is high­ly eco­nom­i­cal, has an improved design and advanced func­tion­al­i­ty.

SFT11NG EXP

Rating of gas flow heaters with a closed combustion chamber
SFT11NG EXP

[gallery2 ids=»14418,14419,14420″]

Net pow­er

8.5 to 19 kW

Ther­mal out­put

21.5 kW

Per­for­mance

11 liters per minute, when heat­ed up to +25 C

DHW tem­per­a­ture val­ues

25 to 65 degrees C

Para­me­ters p of the liq­uid

0.1 to 10 bar

Max­i­mum gas pres­sure

20 mbar

SFT 11 NG EXP rat­ing, accord­ing to user and expert reviews — 5 points.

SFT14NG EXP

This mod­i­fi­ca­tion dif­fers from the basic pro­duc­tiv­i­ty and oth­er char­ac­ter­is­tics, which allows the con­sumer to choose the best option for spe­cif­ic oper­at­ing con­di­tions.

Net pow­er

9.0 to 24 kW

Ther­mal per­for­mance

27.0 kW

Per­for­mance

14 liters per minute, when heat­ed to +25 C

DHW tem­per­a­ture

25 to 65 degrees C

Para­me­ters p of water

0.1 to 10 bar

Max­i­mum gas pres­sure

20 mbar

Beretta

The Ital­ian con­cern Beretta pro­duces sev­er­al gas water heaters with a closed com­bus­tion cham­ber, among which three mod­els are in high demand.

Idrabagno 13 ESI

Rating of gas flow heaters with a closed combustion chamber
Idrabag­no 13 ESI

[gallery2 link=»file» size=»large» ids=»14422,14423″]

Net pow­er

24.5 kW

Ther­mal out­put

21.5 kW

Per­for­mance

8 liters per minute, when heat­ed up to +25 C

DHW tem­per­a­ture val­ues

25 to 58 degrees C

Para­me­ters p of the liq­uid

0.1 to 10 bar

Max­i­mum gas pres­sure

13.5 mbar

The mod­est per­for­mance para­me­ters of the Beretta Idrabag­no 13 ESI are rat­ed by users at 3 points.

Idrabagno 17

Rating of gas flow heaters with a closed combustion chamber
Idrabag­no 17

[gallery2 link=»file» size=»large» ids=»14425,14426″]

Net pow­er

34 kW

Ther­mal per­for­mance

29.5 kW

Per­for­mance

17 liters per minute, when heat­ed to +25 C

DHW tem­per­a­ture

25 to 65 degrees C

Para­me­ters p of water

0.1 to 10 bar

Max­i­mum gas pres­sure

13.5 mbar

Idrabagno 17 I

Rating of gas flow heaters with a closed combustion chamber
Idrabag­no 17 I

[gallery2 ids=»14428,14429″]

Net pow­er

34 kW

Ther­mal out­put

29.5 kW

Pro­duc­tiv­i­ty

17 liters per minute, when heat­ed to +25 C

DHW tem­per­a­ture val­ues

25 to 65 degrees C

Para­me­ters p of the liq­uid

0.1 to 10 bar

Max­i­mum gas pres­sure

13.5 mbar

This tech­nique is rat­ed extreme­ly pos­i­tive­ly by the own­ers — 5 points. The entire mod­el range of water-heat­ing house­hold appli­ances with a closed cham­ber of the Beretta brand has the fol­low­ing advan­tages:

• eco­nom­i­cal con­sump­tion of elec­tric­i­ty, which is used only after turn­ing on the tap;
• liq­uid tem­per­a­ture can be adjust­ed with a mix­er;
• the tech­nique is reli­able and char­ac­ter­ized by excep­tion­al­ly qui­et oper­a­tion;
• rea­son­able price, devices are avail­able for a wide con­sumer audi­ence;
• auto­mat­ic igni­tion sys­tem;
• heat exchang­er made of high qual­i­ty mate­r­i­al, burn­er – mod­elled;
• the abil­i­ty to work even at low water pres­sure para­me­ters in the sys­tem;
• mod­ern con­trol sys­tem that guar­an­tees a high lev­el of secu­ri­ty.

The only dis­ad­van­tage can be called a rel­a­tive­ly large size, which is ful­ly off­set by a mod­ern ele­gant design.

Impor­tant! What­ev­er mod­el you choose, the user must under­stand that only half of the per­for­mance and effi­cien­cy of equip­ment depends on its qual­i­ty, the remain­ing 50% depends on com­pe­tent pro­fes­sion­al instal­la­tion.

Summarizing

We will sum­ma­rize all of the above in a table so that the poten­tial own­er of a flow­ing gas water heater with a closed com­bus­tion cham­ber can make a choice that is rel­e­vant for a par­tic­u­lar object.

brand and mod­el

Pow­er

in kW

Pro­duc­tion

in kW

Flow at t=25 degrees C in liters per minute

Max. gas pres­sure in mbar

Water pres­sure in bar

Rat­ing

Beretta Idrabag­no 13 ESI

24.5

21.5

eight

13.5

ten

3

Beretta Idrabag­no 17

34

29.5

17

13.5

ten

four

Beretta Idrabag­no 17 I

34

29.5

17

13.5

ten

four

Bosch Therm 6000 S

6 to 42

48.4

24

twen­ty

12

four

Bosch Therm 4000 S WTD 12AM E23

7 to 17.4

twen­ty

13

thir­ty

12

5

Bosch Therm 4000 S WTD 15AM E23

7 to 22.6

26

fif­teen

thir­ty

12

5

Bosch Therm 4000 S WTD 18AM E23

7 to 27.9

31.7

16

thir­ty

12

5

Bosch Therm 8000S

6 to 47

51

27

twen­ty

12

5

Next EVO SFT 11 NG EXP

8.5 to 19

21.5

eleven

twen­ty

ten

5

Next EVO SFT 14 NG EXP

9.0 to 24

27.0

four­teen

twen­ty

ten

5

For all the mod­els described above, man­u­fac­tur­ers have estab­lished a guar­an­tee of 24 months. Dur­ing this peri­od, free repairs are car­ried out in ser­vice work­shops, which are equal­ly wide­ly rep­re­sent­ed in EU by Aris­ton, Bosch and Beretta.

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