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Service Manual Danfoss Icon2™
Application description
This basic Icon2™ application controls thermal actuators by group based on heating
demand for the linked room thermostats.
The pump and heat demand signal will activate whenever there is a heating demand
for at least one circuit. Both the pump (PWR1) and the heat demand signal (RELAY) are
set to have a switch-on delay of 3 minutes by default.
In PWM+ mode, the Danfoss Icon2™ makes use of automatic balancing. During periods
with a greater need for heat, this decreases the time spent ‘on’ for shorter pipes in small
rooms and prioritizes longer pipes in large rooms within the system. The process is
automatic and continuous. It ensures more efficient energy consumption and greater
comfort.
Application 00
Floor heating system
Installer App settings
Function Factory setting
Off On
PWM+ proportional control of actuator outputs
Heat pump optimizer – maintenance of minimum flow
PWR1 switch-on delay of 3 minutes
RELAY switch-on delay of 3 minutes
IN2 input for changeover to cooling*
* If you enable IN2, the system will function according to Application 04
Required accessories
1 Stainless steel floor heating manifold SSM-F, 2–12 groups
088U0752 to
088U0762
Set of 2 mounting brackets 088U0585
Set of 2 ball valves 1" 088U0822
2 Thermal actuator TWA-A 230V NC suitable for SSM-F manifold 088H3112
3 Dew point sensor CF-DS 088U0251
4 External NO contact for changeover to cooling mode External
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