Boiler Layout - Wolf MGK-2-390 Installation Instructions Manual

Layout MGK-2
Gas connection R2"
Ventilation air
pipe DN200
Gas combination
valve with gas
pressure limiter
Mixing chamber
Gas fan
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5. Boiler layout

Wolf MGK-2-390/470/550/630 gas condensing boilers are adjusted at the factory for
natural gas E and LL. The high performance heat exchanger is made from robust
aluminium-silicon alloy with a high resistance to corrosion. The gas premix burner with
gas-air mixture for modulating combustion from 17-100 % ensures extremely clean
combustion with a standard seasonal efficiency [to DIN] of up to 110 % for highly efficient
energy utilisation. The connections for the combustion air supply – for room sealed
operation – and gas are on the top of the boiler. The flue gas, heating flow and heating
return connections are on the side of the boiler. The removable burner hood guarantees
easy access for servicing the gas-air mixing unit.
Compact, space-saving installation right up against the wall with no clearance needed.
Quick and easy installation thanks to pre-installed thermal insulation and casing,
hydraulically and electrically ready to connect.
Direct access to all components from the front, simple operation and maintenance.
Integral attenuation minimises sound emissions, ideal for apartment buildings.
• Control unit fully wired; may be used for a wide range of heating system applications
• Cascades with up to four gas condensing boilers provide an output range of up to
2.5 MW
• No return temperature raising facility or minimum water circulation volume required
• Additional 2nd HLSC already integrated in the device
The boiler is fully assembled and encased.
The standard control unit includes a burner control unit, electronic ignition, ionisation
flame monitor and output-dependent fan speed regulation.
Monitoring electrode
Flue gas pressure
switch
Water pressure sensor BDF valve
Ignition electrode
Round gauze burner
Additional
HLSC
Flue gas temperature sensor
Safety assembly 2"
(accessory)
Connection R2" for
safety assembly
Flow connection
DN80 / PN6
Boiler water temperature sensor
Temperature sensors
eHLSC1 and eHLSC2
Heat exchanger as a
sectional design
Return temperature
sensor
Return connection
DN80 / PN6
Flue outlet DN250
Connection R2" for
BDF set (accessory)
Siphons with
condensate drain
9