Weathermatic SLFSI-T10 Design Manual page 7

The correct type of splice kit which should be used includes an electrical spring connector (commonly
called a "wire nut" and a high impact, UV-resistant polypropylene tube prefilled with moisture-resistant
gel. If installed correctly the two-wire splice kit will be waterproof.
HOW TO SPECIFY:
Weathermatic SmartWire™ Splice Kit
SLCONN – Waterproof wire connector for 2 wires connections
Note – (2) SL-CONN kits are included in each Weathermatic SmartWire™ Decoder
Proper Splice (see diagram below)
1. Strip wires ½"
2. Twist stripped wire clockwise with lineman's pliers. Apply the electrical connector and twist in a
clockwise direction.
3. Insert the splice into the gel-filled insulator tube. Push past the locking fingers to hold the
connector in place. Bottom it out.
4. Position wire channels and snap insulator tube cover closed.
5. Pull on wires to ensure waterproof connection.
Note: Keep BLACK to BLACK and RED to RED when wiring two-wire connections.
Splice issues usually arise from any of the following:
•
Electrical connector not fully twisted on to wires. This causes an open wire condition
•
Splice not full inserted into insulator tube. This allows water to infiltrate into the splice causing a
wire short. Usually this issue doesn't show up until a few months after installation.
•
Insulator cap not closed. This also allows water to infiltrate into the splice causing a wire short.
Usually this issue doesn't show up until a few months after installation.
It is a good practice to test a few splices during jobsite inspection by taking a couple random splices
apart to inspect for the issues mentioned above. The contractor will have to re-splice the connection
with a new splice kit* but this practice ensures the installer has likely installed the remaining wire splices
correctly. If the random sample of splices are not correct, it is highly likely the remaining splices were
also installed incorrectly and the system will fail.
*Note: Wire splice kits CANNOT be reused.
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SL-CONN