Wiring Schematic
(Sheathed 18 gauge, 12 foot) Black and Red,
two-wire cable provided by Thetford, permanent-
ly attached to Wall Switch board, from the Wall
Switch to the Control Box harness with a male
terminal connector on the cable end.
Two wires-Black and Brown, from the Control Box
harness to the Motor/Pump wiring, with a female
terminal connector on the toilet harness end.
Connections are made during Thetford factory
Two wires- Red and Black, from the Control Box
harness for power, with a male terminal connector
on the toilet harness end.
{ Reference the Nano wiring information }
Sensor Wiring Harness
Must be 16 gauge, not provided with toilet,
connector information is available in this manual.
Tecma Nano Owner's & Installation Manual
Wall Switch
Control Box
Motor
assembly.
Power
Wall Switch
Sheathed two-wire cable- Red and Black, from
the Control Box harness to the Wall Switch cable,
with a female terminal connector on the toilet
harness end.
Solenoid or Pump Connection
Solenoid (Fresh water models only),
or Pump (Raw water models only) 15A Max.
Two wires- Blue and Black, from the Control Box
harness to the solenoid wiring, With a female
terminal connector on the toilet harness end.
Sensor Output cable
Sheathed four-wire cable from Control Box toTank
Sensor wiring, two pairs of wires- Red and Black,
with a female terminal connector on the toilet
harness end for the Full Tank Sensor, and Green
and White, with male terminal connector on the
toilet harness end for the Optional Mid-level Tank
Sensor.
Sensor and wiring terminals
Two-wires from sensor to installed tank sensor
wire sets.
14
Tank FULL sensor
Optional MID Tank
sensor
Holding Tank
T000037A
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