Johnson AURUM R290 M Serie Guide D'utilisation page 88

6.5.9 Wiring of remote shutdown
CLOSE: SHUT DOWN
6.5.10 Wiring of smart grid
The unit has a smart grid feature, and there are two
ports on the PCB to connect SG signals and EVU
signals as below:
SMART GRID
NOTE
To utilize smart grid function, the DHW mode
must be set available.
1) SG = ON, EVU = ON.
The heat pump will operate in DHW mode firstly.
When TBH is set available, if T5 is lower than 69
°C, the TBH will be turned on forcibly (The heat pump
and TBH can operate at the same time.); if T5 is
higher than or equal to 70 °C, the TBH will be turned
off. (DHW: Domestic Hot Water; T5S is the set
temperature of the water tank.)
When TBH is set unavailable and IBH is set
available for DHW mode, if T5 is lower than 69 °C,
the IBH will be turned on forcibly (The heat pump and
IBH can operate at the same time.); if T5 is higher
than or equal to 70 °C, the IBH will be turned off.
2) SG = OFF, EVU = ON.
The heat pump will operate in DHW mode firstly.
When TBH is set available and DHW mode is set
ON, if T5 is lower than T5S-2, the TBH will be turned
on (The heat pump and TBH can operate at the same
time.); If T5 is higher than or equal to T5S + 3, the
TBH will be turned off.
When TBH is set unavailable and IBH is set
available for DHW mode, if T5 is lower than
T5S-dT5_ON, the IBH will be turned on ( The heat
pump and IBH can operate at the same time.); If T5 is
higher than or equal to Min (T5S + 3,70), the IBH will
be turned off.
3) SG = OFF, EVU = OFF.
The unit will operate properly.
4) SG = ON, EVU = OFF.
The heat pump, IBH, and TBH will be turned off
immediately.
6.6 Cascade function
See the INSTALLATION,
MAINTENANCE MANUAL.
6.7 Connection of other optional
components
See the INSTALLATION, OPERATION AND
MAINTENANCE MANUAL.
The layout of the drainage pipe heating tape shows
as below. For the heating tape selection, you can
refer to the output of the connecter in the WIRING
DIAGRAM.
Bottom plate heating tape
WARNING
Use tie wraps
To prevent refrigerant or insects from entering
into the electrical control box and causing fire,
after wiring, the sleeve
fastened with a tie wrap (accessory)
31
OPERATION AND
should be
V.1