WarmlyYours PD Pro Snow Switch - Manual (Page 10)

Snow Switch ® Model PD Pro
Instruction Manual
23735 Rev. B 06/14 (800) 234-4239 http: www.networketi.com Environmental Technology, Inc. 10 of 30
INSTALLING THE CONDUIT
Only UL listed, Type 4X, raintight conduit hubs and cable glands are to be used. The hub is to be
connected to the conduit of a rigid conduit system before the hub is connected to the enclosure.
Select, measure, cut, and install the conduit in accordance with all National Electrical Code (NEC)
requirements, all local and applicable building and electrical codes, as well as the
manufacturer’s instructions. Ensure a sealed, watertight installation.
INSTALLING THE SENSOR(S)
Refer to the enclosed Installation Sheet(s) and Instruction Manual(s) for sensor installation and
operating instructions.
INSTALLING THE SENSOR CABLES
Route the sensor cables through the weather-tight connection ports on the right side of the unit,
then connect the red, black, and white leads to the front panel PC board terminal block J1
terminals. If using two sensors in the system, even if they are of the same type, it does not
matter which one is wired into which set of terminal blocks, upper or lower. After connecting the
red, black, and white leads, push a little more of the cable into the connection port to create a
little more slack to relieve some of the tension from the wires at the point of the terminal strip,
then fully tighten the weather-tight connection to secure the cable in place. If installing an
extension onto the sensor cable(s), a junction box is required in accordance with applicable code.
INSTALLING THE HEATER CABLES
Lay-out, configure, and install the system heater cables in accordance with National Electrical
Code (NEC) and manufacturers’ requirements, as well as all other local and applicable building
and electrical codes. Make sure to properly seal and waterproof all cable runs. If using a SIT – 6E
pavement-mount sensor, position the heater cabling so it does not interfere with the sensor
wiring.
Upon conclusion of heater cable installation, perform a mega-Ohm or “megger” test on the
heater cables as directed by the heater cable manufacturer. Record the results on page 2 of this
manual and retain for future reference.
INSTALLING THE OPTIONAL COMPONENTS
Route the remote control (RCU–3) cables through the conduit then into the enclosure. Connect
the remote cables to the front panel PC board terminal block J1 terminals labeled REMOTE.
Route the optional temperature sensor assembly wiring through the same conduit as the RCU–3
cable then into the enclosure. Connect the temperature sensor assembly cables to the front
panel PC board terminal block J1 terminals labeled AUX.