Danfoss Icon2 User Manual

20 | © Copyright Danfoss Climate Solutions | 2023.01
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.
The changeover between heating and cooling is controlled based on a reference
thermostat. In nearly all cases, the living room is used as the reference.
To prevent excessive switching between heating and cooling modes, the following
conditions must be met for the system to change over to cooling mode:
• The room temperature measured by the reference thermostat must exceed the set
room temperature + dead band (adjustable from 0–4K).
• The reference thermostat did not have a heating demand during the time delay
(adjustable from 0–24 hours).
• If present, dew point monitoring must be inactive
• The room thermostat must have cooling enabled (default = enabled).
Setting one thermostat as the reference thermostat
In this application, one thermostat is set up as a reference thermostat. The temperature
in this room determines whether the system is in heating or cooling mode.
There are two ways to set up a reference thermostat:
1. Using the Installer App on a smartphone
2. Using the installer menu on the thermostat itself
To do so, set the ME.6 setting to ON
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
Application 05
2-pipe heating/cooling system with (hybrid) heat pump,
changeover to cooling based on reference thermostat

Danfoss Icon2 Specifications

General

Brand	Danfoss
Model	Icon2
Category	Controller
Language	English