Room Limit - Danfoss ECL Comfort 310 Installation Manual

Installation Guide

5.2 Room limit

This section is only relevant if you have installed a room
temperature sensor or a Remote Control Unit.
The controller adjusts the desired flow temperature to compensate
for the difference between the desired and the actual room
temperature.
If the room temperature is higher than the desired value, the
desired flow temperature can be reduced.
The 'Infl. -max.' (Influence, max. room temp.) determines how
much the desired flow temperature should be reduced.
Use this influence type to avoid a too high room temperature. The
controller will allow for free heat gains, i.e. solar radiation or heat
from a fire place etc.
If the room temperature is lower than the desired value, the desired
flow temperature can be increased.
The 'Infl. -min.' (Influence, min. room temperature) determines
how much the desired flow temperature should be increased.
Use this influence type to avoid a too low room temperature. This
could e.g. be caused by windy surroundings.
A typical setting will be -4.0 for 'Infl. -max.' and 4.0 for 'Infl. -min.'
Adapt. time (adaption time)
Circuit
1
Controls how fast the actual room temperature adapts to the desired room
temperature (I control).
OFF: The control function is not influenced by the 'Adapt.
time'.
1:
The desired room temperature is adapted quickly.
50:
The desired room temperature is adapted slowly.
46 DEN-SMT/DK
ECL Comfort 210, application A260
11015
Factory setting
Setting range
OFF / 1 ... 50 s OFF
Influence
The 'Infl. - max.' and 'Infl. - min. ' determine how much the room
temperature should influence the desired flow temperature.
If the 'Infl. ' factor is too high and / or the 'Adapt. time' too low, there is
a risk of unstable control.
Example 1:
The actual room temperature is 2 degrees too high.
The 'Infl. - max. ' is set to -4.0.
The 'Infl. - min. ' is set to 0.0.
The slope is 1.8 (see 'Heat curve' in 'Flow temperature').
Result:
The desired flow temperature is changed by (2 x -4.0 x 1.8)
–14.4 degrees.
Example 2:
The actual room temperature is 3 degrees too low.
The 'Infl. - max. ' is set to -4.0.
The 'Infl. - min. ' is set to 2.0.
The slope is 1.8 (see 'Heat curve' in 'Flow temperature').
Result:
The desired flow temperature is changed by (3 x 2.0 x 1.8)
10.8 degrees.
The adaptation function can correct the desired flow temperature
with max. 8 K x heat curve value.
VI.LG.F1.02
'Infl. - min.' (min. limitation)
Desired room temperature
Actual room temperature
'Infl. - max.' (max. limitation)
Danfoss District Energy