Can the ventilation system cool indoor air?

A mechanical ventilation system is not an air conditioning system, but it is still possible to use the system to reduce the indoor temperature via a bypass function, whereby one airstream does not pass through the counter flow heat exchanger.

This is particularly relevant in summer, when the indoor temperature rises over the course of the day. When the outside temperature falls below the inside temperature, bypassing the heat exchanger and sending the cooler outdoor air directly into the home will generate a more pleasant indoor climate. Under such conditions, the automatic bypass function is activated and will deliver a cooling effect in all rooms.

Get our full 32-page guide for selection and installation of residential ventilation right here: Selection Guide for residential ventilation

Is the unit at risk of icing?

In a climate such as Denmark's, where the temperature during winter drops under -6 degrees at regular intervals, it is necessary to be able to heat up the supply air before it enters the counter flow heat exchanger to avoid icing. With an electric preheating coil, the temperature of the supply air can be increased to ensure stable operation and balanced ventilation down to -15 degrees.

In some of Dantherm's ventilation systems it's possible to retrofit an electric preheating coil inside the ventilation unit itself, while in the other systems an electric preheating coil can be installed in the supply air duct.

Dantherm's systems can also run without preheating coil, as the built-in automatic functions will adjust the air volume so that defrosting can take place without a preheating coil.

How is the system operated?
It is important that the operation of the ventilation system can be adjusted to the residents in the home and their individual needs.

While it will often make sense in a typical single-family dwelling for the residents to have access to setting the system precisely according to their own needs and wishes, the situation will typically be different in a public housing complex. To ensure a stable operation, it will often be beneficial to automate the control of the individual unit as much as possible, so it is not dependent on the residents having to familiarise themselves with how the ventilation system works.

Dantherm's ventilation systems HCV 300, 400, 500, 700 and HCC 2 can be monitored and controlled via the Dantherm Residential app, which is available for both iOS and Android. In addition, Dantherm offers the wired controller HCP 10 and the cordless remote control HRC 3, which give the user access to various control options.

For more information, please download Dantherm’s full Selection Guide for residential ventilation.