NC Box

Viessmann Heat Pumps
NC Box
Natural Refrigerator

NC Box

Natural refrigerator

On hot summer days, the heat pump's control unit switches to free cooling via the NC-Box and transfers excess heat from indoor spaces through the heating circuit to the cooler earth or groundwater. This requires only a small amount of electricity for the circulation pumps. All other heat pump functions remain disabled.

NC Box

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Document Name Description Document Type Language Action
Technology Brochure - Heat Pumps PDF German Download

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