Snow Switch GF PRO - Preparation and System Set-Up

South Bend, Indiana USA | networketi.com
SNOW/ICE CONTROL INSTALLATION MANUAL | PART NO. 23918 REV B
8
PREPARATION AND SYSTEM SET-UP
Install the conduit, system sensor(s) and cables, heater
cables, and power cable. Refer to Figures 2 and 3, as
well as Table 2. Remove the clear plastic unit cover and
face plate to access the inside of the unit. These will be
replaced at the end of the installation process. A post-
installation test will be performed in the next section to
verify proper function.
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, as shown
in Figure 2, 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, congure, 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–4) 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–4 cable then into
the enclosure. Connect the temperature sensor assembly
cables to the front panel PC board terminal block J1
terminals labeled AUX.
Installing the Power Cable
With the circuit breaker off, install the power cable. As
shown in the wiring charts, the power cable is provided
by the customer. Size the cable for a 30 Amp maximum
load. Run the cable through conduit and connect the
leads to the control box wiring. The line is black, neutral is
white, and ground is green. The unit has no power switch
so remember that power is running to the system as soon
as power is applied.