Cascade Operation; Control Configuration; Directly Heated Dhw Cylinder - Wolf COB-2 Operation Instructions Manual

Planning
Moisture-resistant flue with two- or multiple-draught chimneys
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Fig. 4.7 Twin duct chimney
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Open flue and room sealed operation
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Open flue operation
Chimney T400
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Polypropylene system up to 120°C, CE
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approved
4.7

Cascade operation

Up to four heat generators (with the same output) can be cascaded.
– Cascade 4 x COB-2-29 (18.9 - 115.2 kW) or
– Cascade 4 x COB-2-40 (27.4 - 154.0 kW)
4.7.1 Control configuration
KM-2 cascade module installation and operating instructions for contractors
MM-2 mixer module installation and operating instructions for contractors
BM-2 programming unit installation and operating instructions for contractors
The heat generators have control PCBs with functions which are tailored to the WOLF control modules.
Configuration only in conjunction with a KM-2 cascade module.
The KM-2 cascade module controls:
– the header flow (based on the load)
– one mixer circuit
– one DHW cylinder circuit
The MM-2 mixer module controls:
– one additional mixer circuit
– one radiator circuit
A BM -2 programming unit with wall mounting base can be used as a remote control unit for each
mixer module.
4.7.2

Directly heated DHW cylinder

The directly heated DHW cylinder can be connected downstream of the hydraulic separation or via a low
loss header.
Cylinder heating is controlled via the cascade controller type KM-2, to which a cylinder primary pump and
the electronic cylinder sensor are connected.
26 | WOLF GmbH
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B
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Shaft cover from the WOLF product range
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Stainless steel shaft cover from the WOLF
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product range
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