Gas condensing boilers MGK-2 130-300

Gas condensing boiler for condensing operation and DHW heating using natural gas E, LL and P

MGK-2130
MGK-2170
MGK-2210
MGK-2250
Show all

The WOLF gas condensing boilers from the MGK-2 series cover an output range of 130 to 1000 kW in WOLF energy saving systems. By combining aluminium alloy, high-performance heat exchangers with energy efficient premix burners, the systems can modulate between 17 and 100% with optimum burner runtimes, an important energy-saving feature.

MGK-2-130 - 300 gas condensing boilers come in 5 boiler sizes and have modulating controllers to cover a range of output ratings from 23 to 294 kW. The MGK-2-390 - 1000 series comes in 6 sizes and covers an output range from 64 to 1000 kW. In a cascade configuration, the MGK-2 can even achieve a heating output of up to 5 megawatts.

What do you want to know?

Overview of benefits

Minimal appliance width for easy handling through 800-mm doorways

Extremely clean combustion, high standard seasonal efficiency up to 110% (net cv) / 99% (gross cv) for the best possible energy efficiency

Modulating output control from 17 - 100%

Neutralising system set with booster and condensate removal pump can be integrated into the casing

Can be combined with BM-2 programming unit or AM display module

Integrated spread control for optimised utilisation of the boiler’s condensing effect and minimal power consumption by the boiler circuit pump

Slots for pallet truck or forklift forks for easier handling

All maintenance tasks can be performed from the front and right. The boiler can therefore be positioned with the back and left sides directly against the wall

Heat exchanger made from proven aluminium-silicon alloy

Appliance fully thermally insulated

Cascades with up to 5 gas condensing boilers

Integrated back draught safety device for cascade operation

Does not require return flow heating or a minimum water circulation volume

Quick, easy installation thanks to prefitted casing; fully prepared for direct connection to power and water supply

Communication with 0-10V input for optional integration into BMS systems via smartphone, laptop or PC using WOLF Link home LAN/WiFi module

Specifications

MGK-2 130-300
Model type
MGK-2-130
MGK-2-170
MGK-2-210
MGK-2-250
MGK-2-300
General data
Rated heating output at 80/60°C
kW
118
157
196
233
275
Rated heating output at 50/30°C
kW
126
167
208
250
294
Rated heat input
kW
120
160
200
240
280
Lowest heating output (modulating) at 80/60°C
kW
23
27
34
39
45
Lowest heating output (modulating) at 50/30°C
kW
24
30
37
44
49
Lowest heat input (modulating)
kW
23
28
35
41
46
Heat input modulation range
%
19-100
17-100
17-100
17-100
17-100
Amount of condensate at 40/30°C
l/h
12
16
20
24
28
Condensate pH value
approx. 4.0
approx. 4.0
approx. 4.0
approx. 4.0
approx. 4.0
Gas connection
R
1“
1½“
1½“
1½“
1½“
Balanced flue
Type
B23(P), B33, C33(x), C43(x), C53(x), C63(x), C83, C93(x)
Efficiency
η 80/60 at Qmax
%
98.1
98
98.1
98
98
η 50/30 at Qmax
%
104.1
104.2
104.3
103.9
105.2
η TR30 at 30%
%
107.8
106.9
106.7
106.6
106.8
Dimensions
Height
A mm
1300
1300
1300
1300
1300
Width
B mm
995
1355
1355
1355
1355
Depth
C mm
640
640
640
640
640
Flue diameter
mm
160
160
160
160
200
Combustion air supply 4)
mm
160
160
160
160
160
Heating flow line outside diameter
R
1½“
2“
2“
2“
2“
Heating return line outside diameter
R
1½
2“
2“
2“
2“
Gas category
Germany
II2ELL3P
II2ELL3P
II2ELL3P
II2ELL3P
II2ELL3P
Austria
II2H3P
II2H3P
II2H3P
II2H3P
II2H3P
Switzerland
I2H
I2H
I2H
I2H
I2H
Gas connection value:
Natural gas E/H (net cv = 9.5 kWh/m³ = 34.2 MJ/m³)
m³/h
13.1
16.8
21
25.2
29.4
Natural gas LL (net cv = 8.6 kWh/m³ = 31.0 MJ/m³) 1)
m³/h
14.6
18.6
23.3
27.9
32.6
LPG P (net cv = 12.8 kWh/kg = 46.1 MJ/kg) 2)
kg/h
9.6
12.5
15.6
18.7
21.8
Gas supply pressure:
Natural gas E/LL
mbar
20
20
20
20
20
LPG P
mbar
50
50
50
50
50
Water capacity of the heating water heat exchanger
litres
12
15.4
16
20
22
Max. permissible boiler pressure
bar
6
6
6
6
6
Max. permissible flow temperature
°C
90
90
90
90
90
Available gas fan draught
Pa
10-200
10-150
10-150
10-150
10-150
Flue gas temperature 80/60-50/30 at Qmax
°C
65-45
65-45
65-45
65-45
65-45
Flue gas temperature 80/60-50/30 at Qmin
°C
55-35
55-35
55-35
55-35
55-35
Max. flue gas mass flow rate
g/s
56.7
72.5
90.8
108.9
127.1
Flue gas category to DVGW G 635
G52
G52
G52
G52
G52
Heating water pressure drop with 20 K spread
mbar
95
100
115
135
160
Electrical connection
V~/Hz
1~ NPE / 230 V AC / 50 Hz
Integral fuse (medium time lag)
A
4
4
4
4
4
Standby power consumption
W
5
5
5
5
5
Power consumption at partial load/full load
W
30 / 240
42 / 258
42 / 291
43 / 326
48 / 350
IP rating
IP20
IP20
IP20
IP20
IP20
Sound pressure level at full load 3)
dB(A)
~ 49
~ 54
~ 54
~ 54
~ 54
Weight
Total weight (empty)
kg
195
250
271
292
313

Specifications

MGK-2 130-300
General data
Rated heating output at 80/60°C (kW)
118
157
196
233
275
Rated heating output at 50/30°C (kW)
126
167
208
250
294
Rated heat input (kW)
120
160
200
240
280
Lowest heating output (modulating) at 80/60°C (kW)
23
27
34
39
45
Lowest heating output (modulating) at 50/30°C (kW)
24
30
37
44
49
Lowest heat input (modulating) (kW)
23
28
35
41
46
Heat input modulation range (%)
19-100
17-100
17-100
17-100
17-100
Amount of condensate at 40/30°C (l/h)
12
16
20
24
28
Condensate pH value
approx. 4.0
approx. 4.0
approx. 4.0
approx. 4.0
approx. 4.0
Gas connection (R)
1“
1½“
1½“
1½“
1½“
Balanced flue (Type)
B23(P), B33, C33(x), C43(x), C53(x), C63(x), C83, C93(x)
Efficiency
η 80/60 at Qmax (%)
98.1
98
98.1
98
98
η 50/30 at Qmax (%)
104.1
104.2
104.3
103.9
105.2
η TR30 at 30% (%)
107.8
106.9
106.7
106.6
106.8
Dimensions
Height (A mm)
1300
1300
1300
1300
1300
Width (B mm)
995
1355
1355
1355
1355
Depth (C mm)
640
640
640
640
640
Flue diameter (mm)
160
160
160
160
200
Combustion air supply 4) (mm)
160
160
160
160
160
Heating flow line outside diameter (R)
1½“
2“
2“
2“
2“
Heating return line outside diameter (R)
1½
2“
2“
2“
2“
Gas category
Germany
II2ELL3P
II2ELL3P
II2ELL3P
II2ELL3P
II2ELL3P
Austria
II2H3P
II2H3P
II2H3P
II2H3P
II2H3P
Switzerland
I2H
I2H
I2H
I2H
I2H
Gas connection value:
Natural gas E/H (net cv = 9.5 kWh/m³ = 34.2 MJ/m³) (m³/h)
13.1
16.8
21
25.2
29.4
Natural gas LL (net cv = 8.6 kWh/m³ = 31.0 MJ/m³) 1) (m³/h)
14.6
18.6
23.3
27.9
32.6
LPG P (net cv = 12.8 kWh/kg = 46.1 MJ/kg) 2) (kg/h)
9.6
12.5
15.6
18.7
21.8
Gas supply pressure:
Natural gas E/LL (mbar)
20
20
20
20
20
LPG P (mbar)
50
50
50
50
50
Water capacity of the heating water heat exchanger (litres)
12
15.4
16
20
22
Max. permissible boiler pressure (bar)
6
6
6
6
6
Max. permissible flow temperature (°C)
90
90
90
90
90
Available gas fan draught (Pa)
10-200
10-150
10-150
10-150
10-150
Flue gas temperature 80/60-50/30 at Qmax (°C)
65-45
65-45
65-45
65-45
65-45
Flue gas temperature 80/60-50/30 at Qmin (°C)
55-35
55-35
55-35
55-35
55-35
Max. flue gas mass flow rate (g/s)
56.7
72.5
90.8
108.9
127.1
Flue gas category to DVGW G 635
G52
G52
G52
G52
G52
Heating water pressure drop with 20 K spread (mbar)
95
100
115
135
160
Electrical connection (V~/Hz)
1~ NPE / 230 V AC / 50 Hz
Integral fuse (medium time lag) (A)
4
4
4
4
4
Standby power consumption (W)
5
5
5
5
5
Power consumption at partial load/full load (W)
30 / 240
42 / 258
42 / 291
43 / 326
48 / 350
IP rating
IP20
IP20
IP20
IP20
IP20
Sound pressure level at full load 3) (dB(A))
~ 49
~ 54
~ 54
~ 54
~ 54
Weight
Total weight (empty) (kg)
195
250
271
292
313
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