Baxi PBM-i 20 Manual Del Usuario página 131

CONTROL AND OPERATING CHARACTERISTICS
B) Room temperature influence in HEATING
The compensation curve determines the heating water tem-
perature; this may then be corrected based on the difference
between the desired room set point and the actual room tem-
perature.
The correction made to the water temperature depends on
the "Room Authority" coefficient.
The higher the value of the Room Authority the higher the
correction to the system water temperature, and vice-versa.
This allows the water 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.
Enabling room temperature influence on the SYSTEM offsets
the calculated heat pump water outlet temperature set point.
Enabling room temperature influence on ZONE LT1, LT2,
LT3 deviates the calculated water outlet temperature set
point to the system, controlled by the mixing valve.
C) System water 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 water 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.
Example referred to compensation curve 1.0
60
50
40
30
20
10
0
-10
-20
-30
-40
-2.5 2 -1,5 -1 -0,5
DT (Room temperature °C - Room set point °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
Outlet set point with room temp. 20°C
100
90
80
70
60
50
40
30
20
10
20 15 10 5 0
Outside temp. (°C)
Description
MINIMUM set point limit for
SYSTEM curve
MAXIMUM 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
A
10 %
25 %
50 %
75 %
99 %
0 0,5 1 1,5 2
Menu Parameter Default UOM
no.
Mn01 0162 0
Mn01 0164 30
Mn01 0178 0
Mn01 0179 30
Mn01 0193 0
Mn01 0194 30
Mn01 012D 0
Mn01 012E 30
-5 -10 -15 -20 -25 -30
Menu Parameter Default UOM
no.
Mn01 0165 30
Mn01 0166 48
23
Mn01 0180
Mn01 0181 45
Mn01 0195 23
Mn01 0196 45
Mn01 012F 23
Mn01 012G 45
EN PBM 20÷40
%
%
%
%
°C
°C
°C
°C
°C
°C
°C
°C
51