Appendix
42
Installation and maintenance instructions atmoTEC exclusive, atmoTEC plus 0020214272_04
VCW DE
204/4-7 A-
P
VCW DE
204/4-7 A-
L
VCW DE
204/4-7 A-
H
VCW DE
254/4-7 A-
P
VCW DE
254/4-7 A-
L
VCW DE
254/4-7 A-
H
VCW DE
194/4-5 A-
L
Flue gas
discharge
pressure P
W
0.0017 kPa
(0.0170 mbar)
0.0017 kPa
(0.0170 mbar)
0.0017 kPa
(0.0170 mbar)
0.0015 kPa
(0.0150 mbar)
0.0022 kPa
(0.0220 mbar)
0.0022 kPa
(0.0220 mbar)
0.0015 kPa
(0.0150 mbar)
Boiler dimension,
width
440 mm
440 mm
440 mm
440 mm
440 mm
440 mm
440 mm
Boiler dimension,
height
800 mm
800 mm
800 mm
800 mm
800 mm
800 mm
800 mm
Boiler dimension,
depth
338 mm
338 mm
338 mm
338 mm
338 mm
338 mm
338 mm
Approx. net
weight
44 kg
44 kg
44 kg
44 kg
44 kg
44 kg
44 kg
VCW DE
194/4-5 A-
H
VCW DE
244/4-5 A-
L
VCW DE
244/4-5 A-
H
Unit category
I
2ELL
I
2ELL
I
2ELL
Gas connection,
boiler side
20 mm
20 mm
20 mm
Flow/return heat-
ing connections,
boiler side
22 mm
22 mm
22 mm
Domestic hot and
cold water con-
nection, boiler
side
15 mm
15 mm
15 mm
Expansion vessel
volume
12 l
12 l
12 l
Expansion vessel
pre-charge pres-
sure
0.075 MPa
(0.750 bar)
0.075 MPa
(0.750 bar)
0.075 MPa
(0.750 bar)
Flue gas connec-
tion
110 mm
130 mm
130 mm
G20 natural gas
flow pressure
2 kPa
2 kPa
2 kPa
G25 natural gas
flow pressure
2 kPa
2 kPa
2 kPa
G31 natural gas
flow pressure
2 kPa
2 kPa
2 kPa
Gas connection
G20,
H
i
= 34.02 MJ/m
3
2.35 m
³
/h
2.81 m
³
/h
2.81 m
³
/h
G25 gas
connection,
H
i
= 29.25 MJ/m
3
2.73 m
³
/h
3.27 m
³
/h
3.27 m
³
/h
G31 gas
connection,
H
i
= 88.00 MJ/m
3
−
−
−
Min. flue gas
mass flow rate
(G20)
11.0 g/s
15.0 g/s
15.0 g/s
Max. flue gas
mass flow rate
(G20)
13.0 g/s
18.0 g/s
18.0 g/s
Min. flue gas tem-
perature
90
℃
90
℃
90
℃
Max. flue gas tem-
perature
150
℃
130
℃
130
℃
NOx emissions
30 mg/kW
⋅
h
37 mg/kW
⋅
h
37 mg/kW
⋅
h
Flue gas
discharge
pressure P
W
0.0015 kPa
(0.0150 mbar)
0.0015 kPa
(0.0150 mbar)
0.0015 kPa
(0.0150 mbar)