8
Installation and maintenance instructions ecoTEC exclusive 0020193968_05
3
Technical data
Technical data
–
General
VUW 356/5
‑
7
(H-GB)
ecoTEC
exclusive 835
VUW 436/5
‑
7
(H-GB)
ecoTEC
exclusive 843
Designated country (des-
ignation in accordance
with ISO 3166)
GB (United
Kingdom)
GB (United
Kingdom)
Approved unit categories
II
2H3P
II
2H3P
Gas connection, boiler
side
15 x 1.0 mm
20 x 2.0 mm
Flow/return heating con-
nections, boiler side
22 x 1.5 mm
22 x 1.5 mm
Hot and cold water con-
nection, boiler side
15 x 1.5 mm
15 x 1.5 mm
Expansion relief valve
connector (min.)
15 mm
15 mm
Air/flue gas connection
60/100 mm
60/100 mm
Condensate drain pipe-
work (min.)
19 mm
19 mm
Gas connection pressure,
G20 natural gas
2.0 kPa
(20.0 mbar)
2.0 kPa
(20.0 mbar)
Gas connection pressure,
G31 propane
3.7 kPa
(37.0 mbar)
3.7 kPa
(37.0 mbar)
Gas flow rate at 15 °C
and 1013 mbar (based on
hot water generation, if
applicable), G20
3.5 m
³
/h
4.3 m
³
/h
Gas flow rate at 15 °C
and 1013 mbar (based on
hot water generation, if
applicable), G31
2.54 kg/h
3.12 kg/h
Min. flue gas mass rate
(G20)
1.62 g/s
2.02 g/s
Min. flue gas mass rate
(G31)
3.62 g/s
3.62 g/s
Max. flue gas mass rate
14.68 g/s
18.04 g/s
Min. flue gas temperature
40
℃
40
℃
Max. flue gas temperat-
ure
65
℃
65
℃
Approved gas-fired units
C13, C33, C53
C13, C33,
C53
30% efficiency
109.7 %
109.8 %
NOx class
6
6
Test symbol/registration
no.
CE
‑
0085CM0320
CE
‑
0085CM0320
Device Specific Number
(DSN)
211
212
SAP 2009/2012 annual
efficiency (G20)
89.7 %
89.6 %
SAP 2009/2012 annual
efficiency (G31)
90.2 %
90.4 %
Boiler dimension, width
440 mm
440 mm
Boiler dimension, height
720 mm
720 mm
Boiler dimension, depth
406 mm
474 mm
Mounting weight
47.5 kg
55.0 kg
Operating weight (with
water)
48.7 kg
57.0 kg
Technical data
–
G20 power/loading G20
* The lowest nominal heat output may be higher than the
value in the technical data, depending on the design of the
system and the current operating status.
VUW 356/5
‑
7
(H-GB)
ecoTEC
exclusive 835
VUW 436/5
‑
7
(H-GB)
ecoTEC
exclusive 843
Nominal heat output
range P at 50/30 °C *
3.9 to 26.4 kW
4.8 to 36.0 kW
Nominal heat output
range P at 80/60 °C *
3.4 to 24.6 kW
4.3 to 33.4 kW
Maximum heat output for
hot water generation
35.3 kW
43.4 kW
Maximum heat input for
hot water generation
32.7 kW
40.2 kW
Maximum heat input,
heating side
24.8 kW
33.7 kW
Minimum heat input
3.6 kW
4.5 kW
Heating adjustment range
4 to 25 kW
5 to 34 kW
Technical data
–
Power/loading G31
* The lowest nominal heat output may be higher than the
value in the technical data, depending on the design of the
system and the current operating status.
VUW 356/5
‑
7
(H-GB)
ecoTEC
exclusive 835
VUW 436/5
‑
7
(H-GB)
ecoTEC
exclusive 843
Nominal heat output
range P at 50/30 °C *
8.6 to 26.4 kW
8.5 to 36.0 kW
Nominal heat output
range P at 80/60 °C *
7.6 to 24.6 kW
7.6 to 33.4 kW
Maximum heat output for
hot water generation
35.3 kW
43.4 kW
Maximum heat input for
hot water generation
32.7 kW
40.2 kW
Maximum heat input,
heating side
24.8 kW
33.7 kW
Minimum heat input
8.0 kW
8.0 kW
Technical data
–
Heating
VUW 356/5
‑
7
(H-GB)
ecoTEC
exclusive 835
VUW 436/5
‑
7
(H-GB)
ecoTEC
exclusive 843
Maximum flow temperat-
ure
85
℃
85
℃
Max. flow temperature
adjustment range (default
setting: 75 °C)
30 to 80
℃
30 to 80
℃
Permissible total over-
pressure
0.25 MPa
(2.50 bar)
0.25 MPa
(2.50 bar)
Minimum pressure for
full operation
0.08 MPa
(0.80 bar)
0.08 MPa
(0.80 bar)
Expansion vessel capa-
city
10 l
10 l
Circulation water volume
(with reference to
Δ
T= 20 K)
1,058 l/h
1,436 l/h
