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Installation Guide
Application 0003: 2-pipe system with automatic changeover for cooling based
on supply temperature.
Optional: Dewpoint sensor (recommended), Global standby, Circulation pump and heat demand
signal.
Application description
Floor heating system with automatic changeover for cooling based on supply temperature input.
The supply temperature is monitered using a PT1000 sensor. Based on the measurement, the system
switches to heating or cooling. If connected, the system will control the circulation pump which will be
turned on when minimum 1 room has a heat or cooling demand.
The heat signal for e.g. a boiler or heat pump is only activated when the system is in heating mode and
minimum 1 room has a heat demand. For cooling applications it is always recommended to have a dew
point sensor installed in the system to prevent moisture damage to floor and installations in cases where
the relative humidty exceeds dew point.
The Global standby is a potential free input that can be used to remotely put the system in Global away
mode e.g. via an external 3rd party GSM module. When global standby input is active, all rooms receive a 15
degree celcius setpoint.
Settings
"SET 1" = Set supply flow temperature for change-over to heating [25-55°C]
"SET 2" = Set supply flow temperature for change-over to cooling [15-25°C]
Note: temperature cannot be set higher than 2°C lower than heating change-over temperature.
APPLICATION
SETTINGS
Settings on thermostat
Excluding rooms from cooling: To exclude a room from cooling - typically in bathrooms where cooling
would be uncomfortable - go to thermostat and set menu
for further information.
VIMDE20F / 088N2100
Expansion Module for Danfoss Icon™ Master
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to
. See Thermostat Installation Guide
© Danfoss | FEC | 2018.12 | 9
GB
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