DTH101-CT
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Wiring and installation
Before attempting installation or service, ensure that all power to the circuit supplying power to the
system is disconnected / turned off at the circuit breaker. The device should be installed by a QUALIFIED
PROFESSIONAL according the manufacturer’s manual.
This controller will place between circuit breaker and your device (like ON/OFF switch), so for easy
wiring, you need to cut your device (Spa, Pump or Heater) cable in 2 halves. Bring out the 2 hot lines,
neutral and ground wires of each cut end and then start with first hotline black (H1) and connect the
hotline of one half to pole 1 of connector (lose screw and put the wire under terminal) and the black
hotline of the other half to same pole in other side and repeat it again with another hotline Red and next
pole terminal. Then connect the ground green wires of both halves to easy connector with green wire and
Neutral white wires to easy connector with white wire. Please cover the contactor poles hotline pins and
easy connectors with electrical tape for safety matter. For more clarification please check the following
diagram (
for 120 VAC wiring
, use only the pole that Wi-Fi Receiver connected to it).
If you have a timer this controller can replace with timer easily. If you use your box outdoor, use silicon
strip before closing box cap and all cable glands are tight (install the box on wall in a way that main cable
glands are placed at the bottom or side of the box for rain protection).
Sensor installation
The plastic sensor holder on the sensor is ¼ NPT and usually is compatible with the screw of heater drain plug
(please use Teflon tape to seal the inlet pipe of heater) or you can drill and taper a suitable flat place on one of
the
inlet pipe
connectors to install the sensor. Or you can remove the sensor holder and attach the sensor on the
inlet pipe and completely cover and insulate it from outside weather to have an accurate temperature reading
(
you would need
foam insulation pad, Aluminum foil and Duct tape for insulation). Place a thick pad of
aluminum foil firmly over the sensor and wrap an insulation pad around the whole area and secure it tightly
with duct tape.
If the sensor wire is short,
You can buy 5 meter wire extension in our online store
Thermomart .
