Mitsubishi Electric Climaveneta i-BX-004-013M Installation, Operation And Service Manual page 22

INSTALLER CONNECTIONS
Solution 2
System with heat pump and outlet electric heater WITHOUT
storage tank.
Position probe BT9 on the system outlet pipe.
Outlet electric heater control
(i-BR-N only) (only if boiler is not enabled)
A) REPLACEMENT: The electric heater is enabled when
the outside temperature is less than the value of parameter
0304 and the compressor is off, figure 3.
To enable heater activation in REPLACEMENT mode set
parameter 0303 = 1 and 010G = 1.
Electric heater operation reflects the trend in water outlet
temperature, as shown on the graph in figure 4.
If the heat pump shuts down due to an alarm, the electric
heater is activated automatically regardless of the outside
air temperature.
In REPLACEMENT mode the electric heater activation
delay time is ignored, and the device is activated immediate-
ly if necessary.
B) SUPPLEMENTARY: the electric heater operates in sup-
plementary heating mode, together with the compressor, to
satisfy the heating load.
Supplementary heating for low outside air temperature
The electric heater is enabled only when the outside tem-
perature is less than the value of parameter 0304, figure 3.
To enable supplementary heating for low outside air temper-
ature set parameter 0303 = 1 and 010G = 0
Electric heater operation reflects the trend in water outlet
temperature, as shown on the graph in figure 4.
22 i-BX-(Y)_i-BX-N-(Y) EN
2
12 22 25 34
230V / 400V
Outlet electric heater operating parameters in REPLACE-
MENT mode
Description
Activation electrical heater
0 = Electrical Heater not enabled
1 = Electrical Heater enabled
Type of outlet electric heater oper-
ation
0 = Supplementary
1 = Replacement
Activation with low outside air
temperature
0 = Function not enabled
1 = Function enabled
Outside air temperature to enable
electric heater
Minimum outside air temperature
for heat pump operation
Set the parameters following the sequence described in
the table
Outlet electric heater operating parameters in SUPPLE-
MENTARY mode for OUTSIDE AIR TEMP.
Description
Activation electrical heater
0 = Electrical Heater not enabled
1 = Electrical Heater enabled
Type of outlet electric heater
operation
0 = Supplementary
1 = Replacement
Activation with low outside air
temperature
0 = Function not enabled
1 = Function enabled
Outside air temperature to enable
electric heater
Minimum outside air temperature
for heat pump operation
Electric heater delay time
(allows the heat pump to reach
steady operation and thus avoid
activating the heater when not
needed)
Integration time to activate outlet
electric heaters
* set the value to the desired switch-off point
Set the parameters following the sequence described in
the table
I A
BT9
Menu Parameter Value to be UOM
no set
Mn03 0300 1
Mn01 010G 1
Mn03 0303 1
Mn03 0304 Example
-5°C
Mn03 0311 = value 0304
Menu Parameter Value to be UOM
no set
Mn03 0300 1
Mn01 010G 0
Mn03 0303 1
Mn03 0304 Example
-5°C
Mn03 0311 -20 (default)
to be set*
Mn06 0616 60
Mn06 0617 600 °C*sec
°C
°C
°C
°C
min.