Frost Protection - Baxi PBM-i 20 Manual Del Usuario

CONTROL AND OPERATING CHARACTERISTICS
Heat pump operation with
fixed set point
System water set point com-
pensation using the compen-
sation curves can be dis-
abled.
To enable fixed set point oper-
ation, set parameter 0152=0
and 0154=0
The heat pump will operate
so as to reach the fixed outlet
set point, set by parameters
0153 (heating) and 0155
(cooling).

FROST PROTECTION

Frost protection based on system water temperature
The frost protection function is active even if the controller is in standby. To prevent the water freezing and damaging the plate
heat exchanger, the microprocessor shuts down the compressor and activates the system heat exchanger heater if the temper-
ature measured by the heat exchanger outlet temperature probe is than +4°C. The frost prevention temperature set point can
only be modified by an authorised service centre, and only after verifying that the water circuit contains antifreeze. Tripping of
this alarm shuts down the compressor but not the pump, which remains active. To reset normal operation, the water outlet tem-
perature must rise to more than: +7°C on the system side. Reset is automatic.
Frost protection based on inside temperature
Frost protection on the heating circuit is always active, even
when the heat pump is off.
The heat pump and/or supplementary sources of heat (out-
let heater or boiler) are activated if the room temperature
falls below the value set for parameter 0140, to prevent the
pipes inside the home from freezing.
Description
Inside temperature to enable frost
protection
Frost protection based on outside air temperature
Frost protection on the heating and domestic hot water cir-
cuits based on outside air temperature is always active,
even when the heat pump is off.
The system and domestic hot water pumps are activated
when the outside air temperature falls below the value set
for parameter 0141.
Description
Outside temperature to enable
frost protection
54 PBM 20÷40 EN
Description
Enable outlet set point in hEATING, SYSTEM
0= Fixed set point in heating ENABLED
1= Fixed set point in heating DISABLED
Fixed water outlet temperature set point in hEATING, SYSTEM
Enable outlet set point in hEATING, ZONE LT1
0= Fixed set point in heating ENABLED
1= Fixed set point in heating DISABLED
Fixed water outlet temperature set point in hEATING, ZONE LT1
Enable outlet set point in hEATING, ZONE LT2
0= Fixed set point in heating ENABLED
1= Fixed set point in heating DISABLED
Fixed water outlet temperature set point in hEATING, ZONE LT2
Enable outlet set point in hEATING, ZONE LT3
0= Fixed set point in heating ENABLED
1= Fixed set point in heating DISABLED
Fixed water outlet temperature set point in hEATING, ZONE LT3
Enable outlet set point in COOLING, SYSTEM
0= Fixed set point in cooling ENABLED
1= Fixed set point in cooling DISABLED
Fixed water outlet temperature set point in COOLING, SYSTEM
Enable outlet set point in COOLING, ZONE LT1
0= Fixed set point in cooling ENABLED
1= Fixed set point in cooling DISABLED
Fixed water outlet temperature set point in COOLING, ZONE LT1
Enable outlet set point in COOLING, ZONE LT2
0= Fixed set point in cooling ENABLED
1= Fixed set point in cooling DISABLED
Fixed water outlet temperature set point in COOLING, ZONE LT2
Enable outlet set point in COOLING, ZONE LT3
0= Fixed set point in cooling ENABLED
1= Fixed set point in cooling DISABLED
Fixed water outlet temperature set point in COOLING, ZONE LT3
Menu Parameter Default UOM
no.
Mn01 0140 14
Menu Parameter Default UOM
no.
Mn01 0141 4
Heat pump
ON
OFF
°C
System and DHW
circuit water pump
ON
OFF
°C
U I A
Menu Parameter Default
no.
Mn01 0152 0
Mn01 0153 40
Mn01 0167 0
Mn01 0168 40
Mn01 0182 0
Mn01 0183 40
Mn01 015E 0
Mn01 011R 40
Mn01 0154 0
Mn01 0155 12
Mn01 0169 0
Mn01 0170 12
Mn01 0184 0
Mn01 0185 12
Mn01 011T 0
Mn01 011U 12
1°C
0140 Inside temperature
1°C
0141 Outside air temperature to enable frost protection
UOM
-
°C
-
°C
-
°C
-
°C
-
°C
-
°C
-
°C
-
°C
Outside air T
Outside air T