ecoTEC plus combination boilers

ecoTEC plus combination boilers

  • Which? Best Buy awarded
  • Step by Step full text installation wizard
  • Dedicated models available for LPG
  • ErP rated A
  • 7 year warranty available with options up to 10 years when registered through Vaillant Advance

Overview

The ecoTEC plus range of high efficiency boilers combine fantastic efficiency levels and high performance with great usability. Thanks to continuous modulation and real combustion control by a multi-sensor system, they achieve high efficiency at the lowest emissions.

ecoTEC plus 938

The ecoTEC plus 938 is a 38kW high efficiency storage combination boiler which has been

designed especially for larger homes which have a higher hot water demand. The ecoTEC plus 938

also features an innovative integrated hot water storage device at the back of the boiler. This special

feature means the product is capable of delivering up to 20 litres of hot water per minute.

Features and benefits:

  • Available in 25, 32, 35 and 38kW outputs
  • Highly efficient and economical to run – With up to an 89.4% efficiency rating (SAP 2009)
  • Instant hot water delivery in just 5 seconds - Meaning no need for storage tank or cylinder
  • Wide modulation range of up to 1:6 – Ensuring low energy consumption and maximum efficiency
  • Flame lift detection system – Enabling more efficient and quieter combustion
  • Dedicated models available for LPG – Giving a solution for off-gas areas
  • Stylish contoured case design with down flap – Making this a boiler that fits with the décor of any home
  • Built-in-two-stage frost protection – Ensuring optimal performance all year round
  • An innovative solution for large homes – With a higher hot water demand, without needing to install a cylinder or hot water tank (ecoTEC plus 937 only)
  • Extended guarantees available when installed by a Vaillant Advance partner – For total peace of mind
  • Quiet Mark accreditation – Thanks to being ultra quiet whilst in operation
  • Step by step wizard – For quicker ‘first time right’ set up and installation
  • Compatible with aroTHERM air to water heat pump hybrid system – Making the perfect entry into renewable systems
  • Standard 2 year warranty, can be upgraded to a free 7 year warranty when registered through Vaillant Advance
  • Option to purchase extended warranty up to 10 years when registered through Vaillant Advance

Download your ErP label here

ecoTEC plus 825 ErP label (82 kB)

ecoTEC plus 832 ErP label (81 kB)

ecoTEC plus 832 LPG ErP label (81 kB)

ecoTEC plus 835 ErP label (84 kB)

ecoTEC plus 838 ErP (82 kB)

ecoTEC plus 938 ErP label (82 kB)

Specifications

Specifications

ecoTEC plusUnit 825832 835838

Article number


0010018353
0010018354
0010018355 (LPG)

0010016540

0010018356

Gas inlet connection

mm

15

15

15
22

Connections heating flow and return

mm

22

22

22

22

Connector expansion relief valve (minimum)

mm

15

15

15

15

Flue size (concentric)

mm

60/100

60/100

60/100

60/100

Condensate drain (minimum internal diametre drain)

mm

19

19

19

19

Inlet gas working pressure (G20, natural gas)

mbar

20

20

20

20

Inlet gas working pressure (G31, propane)

mbar

37

37

37

37

"Gas flow rate at 15°C
and 1013 mbar (based on
hot water generation, if
applicable), G20"

m³/h

2.7

3.4

3.8

4.2
 

"Gas flow rate at 15 °C
and 1013 mbar (based on
hot water generation, if
applicable), G31"

kg/h

2

2.5

2.8

3.1

Approved flue type
 
"C13, C33,
C43, C53"

"C13, C33,
C43, C53"

"C13, C33,
C43, C53"

"C13, C33,
C43, C53"

NOx class
 
5

5

5

5

SEDBUK SAP seasonal efficiency 2009

%

89.3

89.3

89.3

89.3

ErP rating Central Heating
 AAAA

ErP rating Hot Water
 AAAA

Boiler dimensions (WxHxD)

mm

440x720x338

440x720x338

440x720x372

440x720x406

Weight (boiler only)

kg

36

37

38

43
 

"Nominal heat output
range of central heating at 50°C flow/30°C return"

kW

4.2 - 20.4

"5.7 - 25.7
6.7 - 25.7(LPG) "

6.4-32.2

"7.1-30.1
"

"Nominal heat output
range of central heating at 80°C flow/60°C return"

kW

3.8 - 19.3

"5.2 - 24.4
6.0 -24.4 (LPG) "

5.8 - 30.4

6.4 - 28.6

Maximum DHW output

kW

25.4

25.4

35

38.7

Maximum DHW input

kW

25.9

32.4

35.7

39.5

Maximum central heating input

kW

19.6

24.7

31

28.9

Minimum central heating output

kW

4

"5.5
6.4 (LPG) "

6.2

6.8

Maximum flow temperature

°C

85

85

85

85
 

Adjustable flow temperature (default setting: 75°C)

°C

30 - 80

30 - 80

30 - 80

30 - 80

Maximum CH system pressure

bar

3

3

3

3

Mains water pressure required for maximum flow rate

bar

0.8

0.8

0.8

0.8

Expansion vessel capacity

litre

10

10

10

10

Volume of water circulating (ΔT= 20 K)

l/h

830

1,049

1,307

1,230

Approx. Condensation volume at 50°C feed/30°C return

l/h

2.0

2.5

3.1

2.9

"Remaining feed head of
pump (at nominal circulation
water volume)"

bar

0.25

0.25

0.25

0.25

Minimum DHW flow rate

l/min

2

2

2

2

DHW flow rate at 35°C temperature rise

l/min

10.5

13

14.3

15.9

Maximum domestic cold water pressure

bar

10

10

10

10

Minimum operational water pressure

bar

0.35

0.35

0.35

0.35

Hot water discharge temperature range

°C

35 - 65

35 - 65

35 - 65

35 - 65

Electrical supply voltage

V-/ Hz

230/50

230/50

230/50

230/50

Internal fuse (slow) main voltage

A

2

2

2

2

Minimum electrical power consumption

W

35

35

35

35

"Maximum electrical power
consumption"

W

65

85

90

120

"Standby electrical power
consumption"

W

< 2

< 2

< 2

< 2

Protection class
 
IP X 4D

IP X 4D

IP X 4D

IP X 4D

"CE certificate registration
number"
 CE‑
0085CM0320
CE‑
0085CM0320"
CE‑
0085CM0320
CE‑
0085CM0320

Downloads

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