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Installation Guide
Application 0009: 4-pipe system with 6-port valve, automatic change over for
cooling controlled by a reference room thermostat. (Require external 24 VAC PSU).
Optional: Dewpoint sensor (recommended), shut-off function and Global standy.
Application description
Floor heating system with automatic changeover for cooling via 6-way changeover valve controlled by a
reference room thermostat.
The system can be configured with optional shut off function via a Danfoss AMZ-112 2-way ball valve and
Global standby. 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. Four conditions must be true before cooling in a room is allowed:
•
Reference room temperature must exceed the room setpoint + cooling hysterhesis.
•
No room has called for heating within neutral time.
•
The dew point sensor must not be active / no condensation risk present.
•
The room thermostat must be enabled for cooling (default = enabled).
If no heating or cooling demand is present, the shut-off valve will close.
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 3
degree celcius setpoint.
Settings
"SET 1" = Set desired cooling hysterhesis for change-over [+2 to +4K]
"SET 2" = Set neutral time that must pass without active heating or cooling, before change-over can be
activated [3-6 Hrs.]
APPLICATION
SETTINGS
20 | © Danfoss | FEC | 2018.12
Expansion Module for Danfoss Icon™ Master
party GSM module. When global standby input is active, all rooms receive a 15
rd
OK
OK
OK
OK
OK
OK
VIMDE20F / 088N2100
OK
OK
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