Technical Data - Vaillant ecoTEC exclusive 627 Installation And Maintenance Instructions Manual

3

Technical data

Technical data – General
Designated country (des-
ignation in accordance
with ISO 3166)
Approved unit categories
Gas connection, boiler
side
Flow/return heating con-
nections, boiler side
Expansion relief valve
connector (min.)
Air/flue gas connection
Condensate drain pipe-
work (min.)
Gas connection pressure,
G20 natural gas
Gas connection pressure,
G31 propane
Gas flow rate at 15 °C
and 1013 mbar (based on
hot water generation, if
applicable), G20
Gas flow rate at 15 °C
and 1013 mbar (based on
hot water generation, if
applicable), G31
Min. flue gas mass rate
(G20)
Min. flue gas mass rate
(G31)
Max. flue gas mass rate
Min. flue gas temperature
Max. flue gas temperat-
ure
Approved gas-fired units
30% efficiency
NOx class
Test symbol/registration
no.
Device Specific Number
(DSN)
SAP 2009/2012 annual
efficiency (%)
Boiler dimension, width
Boiler dimension, height
Boiler dimension, depth
Mounting weight
Operating weight (with
water)
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.
8
VU 256/5‑7
(H-GB)
ecoTEC
exclusive 627
GB (United
Kingdom)
II
2H3P
15 x 1.0 mm
22 x 1.5 mm
15 mm
60/100 mm
19 mm
2.0 kPa
(20.0 mbar)
3.7 kPa
(37.0 mbar)
3.2 m³/h
2.35 kg/h
1.47 g/s
1.81 g/s
13.60 g/s
40 ℃
65 ℃
C13, C33,
C53
108.3 %
6
CE‑
0085CM0320
209
89.6 %
440 mm
720 mm
338 mm
37.5 kg
39.0 kg
Nominal heat output
range P at 50/30 °C *
Nominal heat output
range P at 80/60 °C *
Maximum heat output for
hot water generation
Maximum heat input for
hot water generation
Maximum heat input,
heating side
Minimum heat input
Heating adjustment range
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.
Nominal heat output
range P at 50/30 °C *
Nominal heat output
range P at 80/60 °C *
Maximum heat output for
hot water generation
Maximum heat input for
hot water generation
Maximum heat input,
heating side
Minimum heat input
Technical data – Heating
Maximum flow temperat-
ure
Max. flow temperature
adjustment range (default
setting: 75 °C)
Permissible total over-
pressure
Minimum pressure for
full operation
Expansion vessel capa-
city
Circulation water volume
(with reference to
ΔT= 20 K)
Approx. condensate rate
(pH value 3.5 to 4.0) in
50/30 °C heating mode
Remaining feed head of
pump (at nominal circula-
tion water volume)
Installation and maintenance instructions ecoTEC exclusive 0020193966_04
VU 256/5‑7
(H-GB)
ecoTEC
exclusive 627
3.4 to 26.7 kW
3.0 to 24.7 kW
30.0 kW
30.3 kW
25.3 kW
3.3 kW
3 to 26 kW
VU 256/5‑7
(H-GB)
ecoTEC
exclusive 627
4.2 to 26.7 kW
3.7 to 24.7 kW
30.0 kW
30.3 kW
25.3 kW
4.0 kW
VU 256/5‑7
(H-GB)
ecoTEC
exclusive 627
85 ℃
30 to 80 ℃
0.25 MPa
(2.50 bar)
0.08 MPa
(0.80 bar)
10 l
1,064 l/h
2.52 l/h
0.020 MPa
(0.200 bar)