Baxi PBM-i 20 Manual Del Usuario página 107

INSTALLER CONNECTIONS
Radiant panel zone management
The NADI controller can manage a low temperature zone for
radiant panel systems.
The unit is configured to manage a 3-position mixing valve,
14
Heat pump
outlet
Heat pump
return
KA11 Dehumidifier
A dehumidifier can be activated in radiant panel systems to
reduce humidity in cooling mode.
The contact closes and the dehumidifier is activated when
the humidity measured by the probe on the A5 room con-
troller exceeds the value set for parameter 0172.
The contact must be configured accordingly by setting para-
meter 011B = 1.
Description
kA11 contact configuration
0 = Domestic hot water recirculation
1 = Dehumidifier
2 = Secondary circuit pump
3 = Unit operating mode signal
(cooling/heating)
Relative humidity set point
The menus corresponding to dehumidifier operation are only
visible if low temperature zones have been configured.
KA11 Domestic hot water recirculation
The domestic hot water recirculating pump can be activated
when contact SA7 closes (terminals 37-38).
Contact SA7 can be connected to a timer, switch or flow
switch for activating the circulating pump.
The contact must be configured accordingly by setting para-
meter 011B= 0
Description
kA11 contact configuration
0 = Domestic hot water recirculation
1 = Dehumidifier
2 = Secondary circuit pump
3 = Unit operating mode signal
(cooling/heating)
SA7 input configuration
1= Switch
Recirculating pump activation time
15 16 17 18
230V 50Hz
U N
2
N
Y2
Y1
M
1
Menù Parameter Value to be UOM
no. set
Mn01 011B 1
Mn01 0172 60
Menu Parameter Value to be UOM
no. set
Mn01 011B 0
Mn01 011C 1
Mn02 0201 5
a circulating pump and a manifold temperature probe.
The operating modes are described in the chapter on "Con-
trol and operating characteristics"
45 46
3
N
L
4
5
19 20
-
rh%
19 20 37 38
-
-
SA7 example with timer
min
1 Storage tank
2 230V 3-position mixing valve YV4
3 Radiant panel circuit pump E3
4 Radiant panel outlet probe BT10
5 Safety thermostat
Dehumidifier
230V 50Hz
U N
SA7
EN PBM 20÷40
I A
27