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Gas condensing centre CGS-2R / 2L

ComfortLine gas condensing centre 

CGS-214/150R
CGS-220/150R
CGS-224/150R
CGS-214/120L
Show all

CGS-2R gas condensing centre with enamelled steel DHW cylinder with internal indirect coil.
CGS-2L gas condensing centre with stainless steel domestic hot water stratification cylinder.

What do you want to know?

Overview of CGS-2R benefits

Gas condensing centre, comprising a wall mounted gas condensing boiler and DHW cylinder with indirect coil in a modular design

Controlled cylinder heating for optimum energy efficiency through the effective utilisation of condensing technology (European patent granted)

The CGS-2-20/150R can fill a bathtub with around 230 l of water at 40°C in only 10 minutes; the CGS-2-14/150R can produce 210 l of water at 40°C in the same time

High performance indicator of NL = 1.4 and 1.8 when heating from 10°C to 60°C

Minimal heat losses thanks to highly efficient insulation technology – just 1.47 kWh standby loss in 24 hours

Compact design as condensing boiler and DHW cylinder with indirect coil. Can be split easily into two modules of 35 kg and 80 kg for easy installation

Cylinder heating via robust internal indirect coil with generously sized heat exchanger surface area for short heat-up times

Overview of CGS-2L benefits

Gas condensing centre, comprising a wall mounted gas condensing boiler with a stainless steel DHW heat exchanger and a stratification cylinder in modular design

The Turbostop system provides convenient DHW heating inside a stratification cylinder that is better than a standard DHW cylinder (with indirect coil) of 120, 160 or 200 l capacity

Controlled cylinder heating for optimum energy efficiency through the effective utilisation of condensing technology (European patent granted)

The CGS-2-20/160L can fill a bathtub with around 230 l of water at 40°C in only 10 minutes; the CGS-2-14/120L produces 190 l of water at 40°C in the same time

High performance indicator of NL = 1.3 and 2.5 when heating from 10°C to 60°C     

Minimal heat losses thanks to highly efficient insulation technology – just 1.0 kWh loss in 24 hours

Compact design as condensing boiler with stratification cylinder. Can be split easily into two modules of 35 kg and 49 kg respectively for easy installation 

Specifications 

Model type
CGS-2 14/120L
CGS-2 20/160L
CGS-2 24/200L
CGS-2 14/150R
CGS-2 20/150R
CGS-2 24/150R
Energy efficiency class
Central heating energy efficiency class
A
A
A
A
A
A
Energy efficiency class, DHW heating
A
A
A
A
A
A
General data
Rated heating output at 80/60°C
kW
13.5
18.9/22.2
23.8/27.1
13.5
18.9/22.2
23.8/27.1
Rated heating output at 50/30°C
kW
15.2
20.4
25.8
15.2
20.4
25.8
Rated heat input
kW
14
19.6/23.0
24.6/28.0
14
19.6/23.0
24.6/28.0
Lowest heating output (modulating)
At 80/60°C
kW
1.8/4.6
3.8/6.8
4.8/6.8
1.8/4.6
3.8/6.8
4.8/6.8
At 50/30°C
kW
2.1/5.4
4.4/7.4
5.6/7.4
2.1/5.4
4.4/7.4
5.6/7.4
Lowest heat input (modulating)
kW
1.9/4.9
3.9/6.9
4.9/6.9
1.9/4.9
3.9/6.9
4.9/6.9
Heating flow connection
Thread
¾“ (DN 20)
¾“ (DN 20)
¾“ (DN 20)
¾“ (DN 20)
¾“ (DN 20)
¾“ (DN 20)
Heating return connection
Thread
¾“ (DN 20)
¾“ (DN 20)
¾“ (DN 20)
¾“ (DN 20)
¾“ (DN 20)
¾“ (DN 20)
Cold water connection / DHW circulation
Thread
¾“
¾“
¾“
¾“
¾“
¾“
Cold water connection
Thread
½“
½“
½“
¾“
¾“
¾“
Gas connection
R
½“
½“
½“
½“
½“
½“
Air/exhaust pipe connection
mm
60/100
60/100
60/100
60/100
60/100
60/100
Dimensions
Depth
mm
635
635
635
635
635
635
Width
mm
600
600
600
600
600
600
Height
mm
1462
1462
1462
1792
1792
1792
Total weight
kg
84 (35+49)
84 (35+49)
84 (35+49)
115 (35+80)
115 (35+80)
115 (35+80)
Balanced flue
Type
B23P, B33P, C13(x), C33(x), C43(x), C53(x), C63(x), C83(x), C93(x)
B23P, B33P, C13(x), C33(x), C43(x), C53(x), C63(x), C83(x), C93(x)
B23P, B33P, C13(x), C33(x), C43(x), C53(x), C63(x), C83(x), C93(x)
B23P, B33P, C13(x), C33(x), C43(x), C53(x), C63(x), C83(x), C93(x)
B23P, B33P, C13(x), C33(x), C43(x), C53(x), C63(x), C83(x), C93(x)
B23P, B33P, C13(x), C33(x), C43(x), C53(x), C63(x), C83(x), C93(x)
Gas category
II2N3P
II2N3P
II2N3P
II2N3P
II2N3P
II2N3P
Gas connection value
Natural gas E/H (net cv = 9.5 kWh/m³ = 34.2 MJ/m³)
m³/h
1.44
2.06/2.42
2.52/2.95
1.44
2.06/2.42
2.52/2.95
Natural gas LL (net cv = 8.6 kWh/m³ = 31.0 MJ/m³)
m³/h
1.59
2.28/2.67
2.79/3.25
1.59
2.28/2.67
2.79/3.25
LPG P (net cv = 12.8 kWh/m³ = 46.1 MJ/m³)
kg/h
1.07
1.53/1.80
1.87/2.19
1.07
1.53/1.80
1.87/2.19
Gas supply pressure
Natural gas (permissible min./max.)
mbar
20(17-25)
20(17-25)
20(17-25)
20(17-25)
20(17-25)
20(17-25)
LPG (permissible min./max.)
mbar
50(42.5-57.5)
50(42.5-57.5)
50(42.5-57.5)
50(42.5-57.5)
50(42.5-57.5)
50(42.5-57.5)
Standard seasonal efficiency [to DIN] at 40/30°C (net cv/gross cv)
%
110/99
110/99
110/99
110/99
110/99
110/99
Standard seasonal efficiency at 75/60°C (net cv/gross cv)
%
107/96
107/96
107/96
107/96
107/96
107/96
Efficiency
At rated load at 80/60°C (net cv/gross cv)
%
98/88
98/88
98/88
98/88
98/88
98/88
At 30% partial load and TR = 30°C (net cv/gross cv)
%
108/97
108/97
108/97
108/97
108/97
108/97
Flow temperature, factory setting
°C
75
75
75
75
75
75
Flow temperature up to approx.
°C
90
90
90
90
90
90
Max. total pressure
bar
3
3
3
3
3
3
High-efficiency pump (EEI < 0.23)
600 l/h pump rate (14 kW at Δt = 20 K)
mbar
550
550
550
550
550
550
860 l/h pump rate (20 kW at Δt = 20 K)
mbar
-
430
430
-
430
430
1030 l/h pump rate (24 kW at Δt = 20 K)
mbar
-
-
280
-
-
280
Max. permissible total pressure, DHW
bar
10
10
10
10
10
10
DHW temperature range (adjustable)
°C
15-65
15-65
15-65
15-65
15-65
15-65
DHW capacity of heating water heat exchanger
litres
1.3
1.3
1.3
1.3
1.3
1.3
Nominal capacity of stratification cylinder / equivalent nominal capacity
litres
44/100
44/120
44/140
145
145
145
Spec. water throughput “D” at ΔT = 30 K
l/min
18.7
23.2
25.2
19.7
21.4
21.7
Continuous DHW output to DIN 4708
l/h (kW)
366 (14.6)
560 (23.1)
684 (27.8)
324 (13.6)
555 (22.6)
612 (25)
Performance factor to DIN 4708
NL
0.8
2.1
2.5
1.7
2
2.2
DHW output
l/10 min
161
199
215
162
176
182
Standby heat loss to EN 12897
kWh/24 h
1
1
1
1.47
1.47
1.47
Corrosion protection, DHW heat exchanger / cylinder
Stainless steel / two-layer enamel coating to DIN 4753
Stainless steel / two-layer enamel coating to DIN 4753
Stainless steel / two-layer enamel coating to DIN 4753
Stainless steel / two-layer enamel coating to DIN 4753
Stainless steel / two-layer enamel coating to DIN 4753
Stainless steel / two-layer enamel coating to DIN 4753
Expansion vessel, total capacity
Litre
10
10
10
10
10
10
Expansion vessel, pre-charge pressure
bar
0.75-0.95
0.75-0.95
0.75-0.95
0.75-0.95
0.75-0.95
0.75-0.95
Flue gas temperature 80/60-50/30 at Qmax
°C
62-45
70-50
76-50
62-45
70-50
76-50
Flue gas temperature 80/60-50/30 at Qmin
°C
30-25
30-25
33-27
30-25
30-25
33-27
Flue gas mass flow
at Qmax
g/s
6.2
8.8/10.7
10.9/13.0
6.2
8.8/10.7
10.9/13.0
at Qmin
g/s
0.9
1.8
2.3
0.9
1.8
2.3
Available gas fan draught
at Qmax
Pa
125
135
180
90
90
90
at Qmin
Pa
10
14
17
12
12
12
Flue gas category
G52
G52
G52
G52
G52
G52
NOx class
5
5
5
5
5
5
Amount of condensate at 50/30°C
l/h
approx. 1.4
approx. 2.0
approx. 2.4
approx. 1.4
approx. 2.0
approx. 2.4
Condensate pH value
approx. 4.0
approx. 4.0
approx. 4.0
approx. 4.0
approx. 4.0
approx. 4.0
Power consumption on standby
W
3
3
3
3
3
3
Maximum power consumption
W
17-45/93
17-51/110
17-62/135
17-59/45
17-51/63
17-62/88
IP rating
IP
IP X4D
IP X4D
IP X4D
IP X4D
IP X4D
IP X4D
Electrical connection/fuse protection
230 V / 50 Hz / 16 A/B
230 V / 50 Hz / 16 A/B
230 V / 50 Hz / 16 A/B
230 V / 50 Hz / 16 A/B
230 V / 50 Hz / 16 A/B
230 V / 50 Hz / 16 A/B

Specifications 

  • CGS-2 14/120L

  • CGS-2 20/160L

  • CGS-2 24/200L

  • CGS-2 14/150R

  • CGS-2 20/150R

  • CGS-2 24/150R

    Energy efficiency class
    Central heating energy efficiency class
    A
    A
    A
    A
    A
    A
    Energy efficiency class, DHW heating
    A
    A
    A
    A
    A
    A
    General data
    Rated heating output at 80/60°C (kW)
    13.5
    18.9/22.2
    23.8/27.1
    13.5
    18.9/22.2
    23.8/27.1
    Rated heating output at 50/30°C (kW)
    15.2
    20.4
    25.8
    15.2
    20.4
    25.8
    Rated heat input (kW)
    14
    19.6/23.0
    24.6/28.0
    14
    19.6/23.0
    24.6/28.0
    Lowest heating output (modulating)
    At 80/60°C (kW)
    1.8/4.6
    3.8/6.8
    4.8/6.8
    1.8/4.6
    3.8/6.8
    4.8/6.8
    At 50/30°C (kW)
    2.1/5.4
    4.4/7.4
    5.6/7.4
    2.1/5.4
    4.4/7.4
    5.6/7.4
    Lowest heat input (modulating) (kW)
    1.9/4.9
    3.9/6.9
    4.9/6.9
    1.9/4.9
    3.9/6.9
    4.9/6.9
    Heating flow connection (Thread)
    ¾“ (DN 20)
    ¾“ (DN 20)
    ¾“ (DN 20)
    ¾“ (DN 20)
    ¾“ (DN 20)
    ¾“ (DN 20)
    Heating return connection (Thread)
    ¾“ (DN 20)
    ¾“ (DN 20)
    ¾“ (DN 20)
    ¾“ (DN 20)
    ¾“ (DN 20)
    ¾“ (DN 20)
    Cold water connection / DHW circulation (Thread)
    ¾“
    ¾“
    ¾“
    ¾“
    ¾“
    ¾“
    Cold water connection (Thread)
    ½“
    ½“
    ½“
    ¾“
    ¾“
    ¾“
    Gas connection (R)
    ½“
    ½“
    ½“
    ½“
    ½“
    ½“
    Air/exhaust pipe connection (mm)
    60/100
    60/100
    60/100
    60/100
    60/100
    60/100
    Dimensions
    Depth (mm)
    635
    635
    635
    635
    635
    635
    Width (mm)
    600
    600
    600
    600
    600
    600
    Height (mm)
    1462
    1462
    1462
    1792
    1792
    1792
    Total weight (kg)
    84 (35+49)
    84 (35+49)
    84 (35+49)
    115 (35+80)
    115 (35+80)
    115 (35+80)
    Balanced flue (Type)
    B23P, B33P, C13(x), C33(x), C43(x), C53(x), C63(x), C83(x), C93(x)
    B23P, B33P, C13(x), C33(x), C43(x), C53(x), C63(x), C83(x), C93(x)
    B23P, B33P, C13(x), C33(x), C43(x), C53(x), C63(x), C83(x), C93(x)
    B23P, B33P, C13(x), C33(x), C43(x), C53(x), C63(x), C83(x), C93(x)
    B23P, B33P, C13(x), C33(x), C43(x), C53(x), C63(x), C83(x), C93(x)
    B23P, B33P, C13(x), C33(x), C43(x), C53(x), C63(x), C83(x), C93(x)
    Gas category
    II2N3P
    II2N3P
    II2N3P
    II2N3P
    II2N3P
    II2N3P
    Gas connection value
    Natural gas E/H (net cv = 9.5 kWh/m³ = 34.2 MJ/m³) (m³/h)
    1.44
    2.06/2.42
    2.52/2.95
    1.44
    2.06/2.42
    2.52/2.95
    Natural gas LL (net cv = 8.6 kWh/m³ = 31.0 MJ/m³) (m³/h)
    1.59
    2.28/2.67
    2.79/3.25
    1.59
    2.28/2.67
    2.79/3.25
    LPG P (net cv = 12.8 kWh/m³ = 46.1 MJ/m³) (kg/h)
    1.07
    1.53/1.80
    1.87/2.19
    1.07
    1.53/1.80
    1.87/2.19
    Gas supply pressure
    Natural gas (permissible min./max.) (mbar)
    20(17-25)
    20(17-25)
    20(17-25)
    20(17-25)
    20(17-25)
    20(17-25)
    LPG (permissible min./max.) (mbar)
    50(42.5-57.5)
    50(42.5-57.5)
    50(42.5-57.5)
    50(42.5-57.5)
    50(42.5-57.5)
    50(42.5-57.5)
    Standard seasonal efficiency [to DIN] at 40/30°C (net cv/gross cv) (%)
    110/99
    110/99
    110/99
    110/99
    110/99
    110/99
    Standard seasonal efficiency at 75/60°C (net cv/gross cv) (%)
    107/96
    107/96
    107/96
    107/96
    107/96
    107/96
    Efficiency
    At rated load at 80/60°C (net cv/gross cv) (%)
    98/88
    98/88
    98/88
    98/88
    98/88
    98/88
    At 30% partial load and TR = 30°C (net cv/gross cv) (%)
    108/97
    108/97
    108/97
    108/97
    108/97
    108/97
    Flow temperature, factory setting (°C)
    75
    75
    75
    75
    75
    75
    Flow temperature up to approx. (°C)
    90
    90
    90
    90
    90
    90
    Max. total pressure (bar)
    3
    3
    3
    3
    3
    3
    High-efficiency pump (EEI < 0.23)
    600 l/h pump rate (14 kW at Δt = 20 K) (mbar)
    550
    550
    550
    550
    550
    550
    860 l/h pump rate (20 kW at Δt = 20 K) (mbar)
    -
    430
    430
    -
    430
    430
    1030 l/h pump rate (24 kW at Δt = 20 K) (mbar)
    -
    -
    280
    -
    -
    280
    Max. permissible total pressure, DHW (bar)
    10
    10
    10
    10
    10
    10
    DHW temperature range (adjustable) (°C)
    15-65
    15-65
    15-65
    15-65
    15-65
    15-65
    DHW capacity of heating water heat exchanger (litres)
    1.3
    1.3
    1.3
    1.3
    1.3
    1.3
    Nominal capacity of stratification cylinder / equivalent nominal capacity (litres)
    44/100
    44/120
    44/140
    145
    145
    145
    Spec. water throughput “D” at ΔT = 30 K (l/min)
    18.7
    23.2
    25.2
    19.7
    21.4
    21.7
    Continuous DHW output to DIN 4708 (l/h (kW))
    366 (14.6)
    560 (23.1)
    684 (27.8)
    324 (13.6)
    555 (22.6)
    612 (25)
    Performance factor to DIN 4708 (NL)
    0.8
    2.1
    2.5
    1.7
    2
    2.2
    DHW output (l/10 min)
    161
    199
    215
    162
    176
    182
    Standby heat loss to EN 12897 (kWh/24 h)
    1
    1
    1
    1.47
    1.47
    1.47
    Corrosion protection, DHW heat exchanger / cylinder
    Stainless steel / two-layer enamel coating to DIN 4753
    Stainless steel / two-layer enamel coating to DIN 4753
    Stainless steel / two-layer enamel coating to DIN 4753
    Stainless steel / two-layer enamel coating to DIN 4753
    Stainless steel / two-layer enamel coating to DIN 4753
    Stainless steel / two-layer enamel coating to DIN 4753
    Expansion vessel, total capacity (Litre)
    10
    10
    10
    10
    10
    10
    Expansion vessel, pre-charge pressure (bar)
    0.75-0.95
    0.75-0.95
    0.75-0.95
    0.75-0.95
    0.75-0.95
    0.75-0.95
    Flue gas temperature 80/60-50/30 at Qmax (°C)
    62-45
    70-50
    76-50
    62-45
    70-50
    76-50
    Flue gas temperature 80/60-50/30 at Qmin (°C)
    30-25
    30-25
    33-27
    30-25
    30-25
    33-27
    Flue gas mass flow
    at Qmax (g/s)
    6.2
    8.8/10.7
    10.9/13.0
    6.2
    8.8/10.7
    10.9/13.0
    at Qmin (g/s)
    0.9
    1.8
    2.3
    0.9
    1.8
    2.3
    Available gas fan draught
    at Qmax (Pa)
    125
    135
    180
    90
    90
    90
    at Qmin (Pa)
    10
    14
    17
    12
    12
    12
    Flue gas category
    G52
    G52
    G52
    G52
    G52
    G52
    NOx class
    5
    5
    5
    5
    5
    5
    Amount of condensate at 50/30°C (l/h)
    approx. 1.4
    approx. 2.0
    approx. 2.4
    approx. 1.4
    approx. 2.0
    approx. 2.4
    Condensate pH value
    approx. 4.0
    approx. 4.0
    approx. 4.0
    approx. 4.0
    approx. 4.0
    approx. 4.0
    Power consumption on standby (W)
    3
    3
    3
    3
    3
    3
    Maximum power consumption (W)
    17-45/93
    17-51/110
    17-62/135
    17-59/45
    17-51/63
    17-62/88
    IP rating (IP)
    IP X4D
    IP X4D
    IP X4D
    IP X4D
    IP X4D
    IP X4D
    Electrical connection/fuse protection
    230 V / 50 Hz / 16 A/B
    230 V / 50 Hz / 16 A/B
    230 V / 50 Hz / 16 A/B
    230 V / 50 Hz / 16 A/B
    230 V / 50 Hz / 16 A/B
    230 V / 50 Hz / 16 A/B
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