ECL Comfort 210/310, A217/A317 Installation Guide - Danfoss ...

Installation Guide ECL Comfort 210 / 310, application A217 / A317
5.3 Flow / power limit
Depending on controller type, the flow / power limit is based on
different input types:
ECL Key
application
ECL Comfort 210
controller
ECL Comfort 310
controller
A2xx Pulse signal Pulse signal
A3xx Not possible M-bus signal
A flow or energy meter can be connected to the ECL controller in
order to limit the flow or consumed power. The signal from the
flow or energy meter can be based on pulse or M-bus signal.
When the flow / power gets higher than the set limit, the controller
gradually reduces the desired DHW temperature to obtain an
acceptable max. flow or power consumption.
Actual (actual flow or power) 11110
Circuit Setting range Factory setting
1 Read-out only
The value is the actual flow or power based on the signal from flow / energy
meter.
Limit (limitation value) 11111
Circuit Setting range Factory setting
Set the limitation value.
1 0.0 ... 999.9 l/h 999.9 l/h
Adapt. time (adaptation time) 11112
Circuit Setting range Factory setting
1 OFF / 1 ... 50 s OFF
Controls how fast the flow / power limitation adapts to the desired
limitation.
OFF: The control function is not influenced by the ‘Adapt.
time’.
1: The desired temperature is adapted quickly.
50: The desired temperature is adapted slowly.
Filter constant 11113
Circuit Setting range Factory setting
1 1 ... 50 10
The actual filter dampens the flow / power input data by the set factor.
1: Minor dampening (low filter constant)
50: Major dampening (high filter constant)
Flow / power
limitation Limit
Desired flow
temp.
° C
Time
If the ‘Adapt. time’ is too low, there is a risk of unstable control.
78 DEN-SMT/DK VI.LG.U2.02 Danfoss District Energy