Baxi PBM-i 20 Manual Del Usuario página 132

CONTROL AND OPERATING CHARACTERISTIC
Water outlet set point compensation diagram in COOLING
The compensation curve in cooling mode can be modified to
allow correct heat pump operation depending on the cooling
system used (radiant panels, fan coils).
Points T1 and T2 correspond to two outside temperature
values that respectively identify the maximum and minimum
system outlet temperature.
Water
set point
Tm1
Tm2
Te1
The compensation curves in COOLING are divided into:
• SYSTEM curve determines the general water outlet tem-
perature to the terminal units.
• ZONE curve determines the water outlet temperature in
the mixed circuit.
For systems configured with mixed zones, the SYSTEM
curve and ZONE curve must be selected.
The system and zone curve work in cascading, the mixed
zone curve may therefore not request a higher value than
the one supplied by the system curve.
Maximum room humidity compensation
The water outlet temperature set point, calculated based on
the compensation curve, can be compensated according to
the maximum relative humidity in the room.
The water outlet temperature value can increase so as to
avoid possible formation of condensate in radiant cooling
systems (underfloor, ceiling, wall, etc.).
If the relative humidity measured by the A5 room unit A5
exceeds the value set for parameter 0157, 0172, 0187, the
water temperature set point increases until reaching the
maximum temperature.
The maximum water temperature is the set point calculated
according to the compensation curve in cooling mode plus
the value set for parameter 0158, 0173, 0188.
Enabling room humidity compensation on SYSTEM offsets
the calculated heat pump water outlet temperature set point.
Enabling room humidity compensation on ZONE LT1, LT2,
LT3 deviates the calculated water outlet temperature set
point to the system, controlled by the mixing valve.
This function is only selectable if at least one low tempera-
ture zone with mixing valve is enabled.
Temperature
hysteresis (°C)
Value:
parameter 0158
parameter 0173
parameter 0188
Value parameter 0157
Value parameter 0172
Value parameter 0187
52 PBM 20÷40 EN
Te2 Outside temp.
100% UR% Room
humidity (RH%)
Description
Enable SYSTEM compensation curve
0= Disabled
1= Enabled
Maximum outlet temperature set point limit
in cooling mode (Tm1)
Minimum outlet temperature corresponding
to max. return temperature (Te1)
Minimum outlet temperature set point limit
in cooling mode (Tm2)
Maximum outside temperature correspond-
ing to min. outlet temperature (Te2)
Enable compensation curve zone LT1
0= Disabled
1= Enabled
Maximum outlet temperature set point limit
in cooling mode (Tm1)
Minimum outside temperature correspond-
ing to max. outlet temperature (Te1)
Minimum outlet temperature set point limit in
cooling mode (Tm2)
Maximum outside temperature correspond-
ing to min. outlet temperature (Te2)
Enable compensation curve zone LT2
0= Disabled
1= Enabled
Maximum outlet temperature set point limit
in cooling mode (Tm1)
Minimum outside temperature corresponding
to max. outlet temperature (Te1)
Minimum outlet temperature set point limit in
cooling mode (Tm2)
Maximum outside temperature correspond-
ing to min. outlet temperature (Te2)
Enable compensation curve zone LT3
0= Disabled
1= Enabled
Maximum outlet temperature set point limit
in cooling mode (Tm1)
Minimum outside temperature corresponding
to max. outlet temperature (Te1)
Minimum outlet temperature set point limit in
cooling mode (Tm2)
Maximum outside temperature correspond-
ing to min. outlet temperature (Te2)
Description
Enable compensation for room
humidity, SYSTEM
0= Disabled
1= Enabled
Room relative humidity value to start
increasing water outlet temperature
set point for SYSTEM
Maximum outlet temperature hys-
teresis corresponding to 100% rela-
tive humidity
Enable compensation for room
humidity, ZONE LT1
0= Disabled
1= Enabled
Room relative humidity value to start
increasing water outlet temperature
set point ZONE LT1
Maximum outlet temperature hys-
teresis corresponding to 100% rela-
tive humidity
Enable compensation for room
humidity, ZONE LT2
0= Disabled
1= Enabled
Room relative humidity value to start
increasing water outlet temperature
set point ZONE LT2
Maximum outlet temperature hys-
teresis corresponding to 100% rela-
tive humidity
Enable compensation for room
humidity, ZONE LT3
0= Disabled
1= Enabled
Room relative humidity value to start
increasing water outlet temperature
set point ZONE LT2
Maximum outlet temperature hys-
teresis corresponding to 100% rela-
tive humidity
A
Menu Parameter Default
no.
Mn01 0154 0
Mn01 0128 25
Mn01 0129 23
Mn01 0130 23
Mn01 0131 36
Mn01 0169 0
Mn01 0132 20
Mn01 0133 23
Mn01 0134 18
Mn01 0135 36
Mn01 0184 0
Mn01 0136 20
Mn01 0137 23
Mn01 0138 18
Mn01 0139 36
Mn01 011T 0
Mn01 012h 20
Mn01 012J 23
Mn01 012L 18
Mn01 012M 36
Menu Parameter Default UOM
no.
Mn01 0156 0
Mn01 0157 70
Mn01 0158 15
Mn01 0171 0
Mn01 0172 70
Mn01 0173 15
Mn01 0186 0
Mn01 0187 70
Mn01 0188 15
Mn01 012N 0
Mn01 012P 70
Mn01 012R 15
UOM
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
%
°C
%
°C
%
°C
%
°C