Document No.: E20-018-00
15
6.8.
Steam Pressure Sensor Wiring
(1) Connect the steam pressure sensor wires after installing the sensor piping.
(2) Pass the steam pressure sensor wires through the bushing in the steam pressure sensor wire inlet.
(3) Connect the steam pressure sensor wires to the specified terminal block on the EJ-210 and the
side face of the EJ-210, as shown in the figure below.
P+ terminal: Red wire (Power supply positive (+))
P1 terminal: White wire (Voltage output)
P- terminal: Black wire (Power supply ground)
FG terminal: Gray wire (Shield)
Figure 6-5: Wiring of steam pressure sensor wires
NOTE 1: Use the FG terminal on the EJ-210 side face.
NOTE 2: The wire colors described above are for the optional steam pressure sensor wires.
P+ P1 P-
FG
Terminal block
on circuit board
Bushing
Steam pressure sensor wires
Boiler operation terminal
EJ-210 side face
Gray
Red
Black
