Mitsubishi Electric Climaveneta i-BX-004-013M Installation, Operation And Service Manual page 25

INSTALLER CONNECTIONS
Supplementary heating always enabled
Supplementary heating by boiler is enabled for all outside
air temperatures.
To enable heating at all times set parameter 0306 = 0 and
010H = 0
Boiler operation reflects the trend in water temperature, as
shown on the graph in figure 4.
3
Boiler
3°C
Enabled
OFF
0307 Outside temperature to
enable boiler
4
ON
Boiler
OFF
Outside air T
ON
Compressor
OFF
Once the boiler has been enabled, supplementary heating is activated when the
integration time set for parameter 0619 is reached and the delay time 0618 has
elapsed. The delay time is ignored when the unit is first started.
Example:
Value 0619 = 600°C*sec
Water temperature set point= 50°C
Actual temperature = 40°C
(50 – 40) x 60 sec = 600°Csec. ----> Boiler ON
Low values of 0619 mean frequent activation of the boiler.
Too high values of 0619 mean long delays in activating the boiler
Boiler operating parameters in SUPPLEMENTARY mode
when always ENABLED
Description
Activation Boiler
0 = Boiler not enabled
1 = Boiler enabled
Type of boiler operation
0 = Supplementary
1 = Replacement
Activation with low outside air
temperature
0 = Function not enabled
1 = Function enabled
Outside air temperature to enable
boiler
Minimum outside air temperature
for heat pump operation
Boiler hysteresis
Boiler activation delay time (allows
the heat pump to reach steady
operation and thus avoid activat-
ing the boiler when not needed)
Integration time to activate boiler
* set the value to the desired switch-off point
Set the parameters following the sequence described in
the table
Boiler activation delay time 0618
Integration time 0619
I A
Menu Parameter Value to be
no. set
Mn03 0301 1
Mn01 010H 0
Mn03 0306 0
Mn03 0307 Example
-5°C
Mn03 0311 -20 (default)
to be set*
Mn03 0316 Default: 4
Min: 0
Max: 20
Mn06 0618 60
Mn06 0619 600
System water temperature
set point
Actual water
temperature
System HP control
hysteresis
EN i-BX-(Y)_i-BX-N-(Y)
UOM
°C
°C
°C
min.
°C*sec
25