Viessmann Sub-mounting kit with mixer for system boiler can only be used in conjunction with a surface mounted pre-plumbing jig.

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PlusBus Vitodens 200-W System Boiler Sub-Mounting kit with Mixer.

Complete assembly for heat distribution via one heating circuit with mixer and one heating circuit without mixer, for installation below the appliance.

Consists of:

Plate heat exchanger for system separation of the heating circuit with mixer

Variable speed high efficiency circulation pump of the heating circuit with mixer

3-way Mixer with mixer motor

Mixer PCB, capable of communicating via PlusBus

Adjustable bypass

Flow temperature sensor

Valve for regulating the flow rates of both heating circuits

Cover in same design as wall mounted boiler