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AB432956914381en-010101
Service Manual Danfoss Icon2™
Application description
This application makes it possible to send separate control signals for both heating and
cooling demands to a heat pump or hybrid system. The PWR1 (230V output) is active
when there is a heating demand and the RELAY (potential-free contact) is used for
cooling.
To enable the PWR1 230V output to control the heat pump based on heating demand,
the AMZ connection box converts the signal to a potential-free NO contact.
If it is not possible to prevent the supply temperature from dropping below the dew
point in cooling mode, it is strongly recommended that you add a dew point sensor.
Condensation can result in permanent damage to the floor’s construction and finish.
A relay or potential-free contact is connected to input IN2 to control the changeover
between heating and cooling modes. When the external contact is closed, the system
will change over to cooling mode.
Application 15
2-pipe heating/cooling system with (hybrid) heat pump,
changeover to cooling based on external (manual) potential-free
NO contact
Disabling cooling (Bathroom)
If there is a bathroom with underfloor heating and an Icon2™ room thermostat, you
may want to disable cooling for this room. Cooling a bathroom will cause condensation
to form on the floor.
There are two ways to disable cooling mode for a room:
1. Using the Installer App on a smartphone
2. Using the installer menu on the thermostat itself
To do so, set the ME.7 setting to OFF
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