Technical data

47EN 10/2010 i-KI MTD / i-KIR MTD
CONTROL AND OPERATING CHARACTERISTICS
A
-2.5
-40
-30
-20
-10
0
10
20
30
40
50
60
2 -1,5 -1 -0,5 0 0,5 1 1,5 2
DT (Room temperature °C - Room set point °C)
Water outlet temperature deviation (°C)
Example referred to compensation curve 1.0
10 %
25 %
50 %
75 %
99 %
Outlet set point with room temp. 20°C
Outside temp. (°C)
20
10
20
30
40
50
60
70
80
90
100
15 10 5 0 -5 -10 -15 -20 -25 -30
Outlet temp. (°C)
C) System outlet temperature limits in HEATING
These define the temperature limits (minimum and maxi-
mum) that can be requested from the circuit and never
exceeded.
In the figure the minimum limit is 30°C and the maximum is
40°.
Between 30 and 40°C the outlet temperature will be able to
vary based on the trend in outside temperature.
For systems configured with mixed zones, the limits for the
SYSTEM curve and ZONE curve must be selected.
B) Room temperature influence in HEATING
The compensation curve determines the water outlet temper-
ature in heating; this may then be corrected based on the dif-
ference between the desired room set point and the actual
room temperature.
The correction made to the outlet temperature depends on
the “Room Authority” coefficient.
The higher the value of the Room Authority the higher the
correction to the system outlet temperature, and vice-versa.
This allows the outlet temperature to adapt quickly to
changes in the conditions inside the room.
The function can only be ENABLED if the A5 room controller
is positioned in the room and used to measure the reference
temperature.
Set authority values for the SYSTEM equal to or greater than
those for zones LT1, LT2, LT3.
Description
MINIMUM outlet set point limit for
SYSTEM curve
MAXIMUM outlet set point limit for
SYSTEM curve
MINIMUM outlet set point limit for
compensation curve in zone LT1
MAXIMUM outlet set point limit for
compensation curve in zone LT1
MINIMUM outlet set point limit for
compensation curve in zone LT2
MAXIMUM outlet set point limit for
compensation curve in zone LT2
MINIMUM outlet set point limit for
compensation curve in zone LT3
MAXIMUM outlet set point limit for
compensation curve in zone LT3
Menu
Mn01
Mn01
Mn01
Mn01
Mn01
Mn01
Mn01
Mn01
Parameter
no
0165
0166
0180
0181
0195
0196
012F
012G
Default
30
48
23
45
23
45
23
45
UOM
°C
°C
°C
°C
°C
°C
°C
°C
Description
Enable room temperature influ-
ence on SYSTEM
0= Disabled
1= Enabled
SYSTEM Room Authority
Enable Room temperature influ-
ence on LT1
0= Disabled
1= Enabled
LT1 Room Authority
Enable Room temperature influ-
ence on LT2
0= Disabled
1= Enabled
LT2 Room Authority
Enable Room temperature influ-
ence on LT3
0= Disabled
1= Enabled
LT3 Room Authority
Menu
Mn01
Mn01
Mn01
Mn01
Mn01
Mn01
Mn01
Mn01
Parameter
no.
0163
0164
0178
0179
0193
0194
012D
012E
Default
0
30
0
30
0
30
0
30
UOM
%
%
%
%