Technical data
64
Installation and maintenance instructions ecoTEC pro 0020129672_03
17
17 Technical data
ecoTEC pro
Unit
pro 24 (VUW GB 246/5-3)
pro 28 (VUW GB 286/5-3)
Nominal heat output range P at 50/30 °C
kW
5.7 - 19.9
6.9 - 25.7
Nominal heat output range P at 80/60 °C
kW
5.2 - 18.9
6.2 - 24.4
Maximum heat output for hot water generation
kW
23.4
28.6
Maximum heat input for hot water generation
kW
23.7
28.9
Maximum heat input at the heating side
kW
19.1
24.7
Minimum heat input G20
kW
5.5
6.6
Minimum heat input G31
kW
—
8.7
Minimum heat output G31
kW
—
8.2
Heating setting range
kW
5 - 19
6 - 24
Heating
Max. flow temperature
°C
85
Max. flow temperature setting range(factory setting: 75 °C)
°C
30-80
Min. pressure for full operation
MPa/bar
0.08/0.8
Permissible total over-pressure
MPa/bar
0.3/3.0
Expansion vessel capacity
l
8
Circulation water quantity (with reference to
D
T = 20 K)
l/h
796
1032
Condensate rate approx. (pH value 3.5 – 4.0)
in heating mode 50 °C supply/30 °C return
l/h
1.9
2.5
Remaining feed head of pump (at nominal circulation water
volume)
MPa/bar
0.025/0.25
DHW mode
Lowest water volume
l/min
1.5
Water volume (at
D
T = 42 K)
l/min
7.8
9.6
Water volume (at
D
T = 35 K)
l/min
9.4
11.5
Water volume (at
D
T = 30 K)
l/min
11.0
13.4
Permitted overpressure
MPa/bar
1.0/10.0
Required connection pressure
MPa/bar
0.035/0.35
Hot water output temperature range
°C
35-65
General
Boiler-side gas connection
mm
15
Flow/return heating connections, boiler side
mm
22
Connecting the hot and cold water, boiler side
Inches
G 3/4
Connector expansion relief valve (minimum)
mm
15
Condensate discharge pipework (minimum)
mm
19
Flue gas spigot
mm
60/100 (concentric), optional 80/125 (concentric)
Gas connection pressure (gas inlet working pressure)
natural gas, G20
kPa/mbar
0.20/20
Gas connection pressure (gas inlet working pressure)
propane, G31
kPa/mbar
0.37/37
Gas flow rate at 15 °C and 1013 mbar
(based on hot water generation if applicable)
G20
G31
m
3
/h
kg/h
2.5
1.84
3.1
2.25
Flue gas mass flow min./max.
g/s
2.5/10.6
3.0 (H gas); 3.9 (P gas)/13.0
Flue gas temperature min./max.
°C
40/70
40/75
Certificated flue gas connections
C13, C33, C43 , C53, C83, C83, B53P
NOx class
5
NOx
mg/kWh
27.3
33.4
SEDBUK (2005)
A
SEDBUK (2009) (G20/G31)
89.1/-
89.3/90.3
Boiler dimensions (H x W x D)
mm
720 x 440 x 335
Mounting weight approx.
kg
35
36
Electrical connection
V/Hz
230/50
Built-in fuse
2 A, slow-blow
Electrical power consumption min./max.
W
90/105
Standby electrical consumption
W
< 2
< 2
Level of protection
IP X4 D
Certification number
CE-0085CM0320
17.1 Technical data
