Chore-Tronics® 3 Control Control Installation
MT2398C
93
The I/O Net terminals of the Main box and the two Relay Boxes must be connected using Non-shielded Twisted Pair Wire (Chore-
Time part no. 42208). Using the Twisted Pair Wire provided, hook the I/O Net wires from the first Relay Box to the Main Box,
then from the Main Box to the Second Relay Box. I/O Net is polarity sensitive so be sure that the positive and negative I/O Net
terminals in all boxes are connected properly (Figure 15). Also make sure that DIP switch #1 on the IO board of the Main Box is
in the OFF position. 24 Vdc must be connected from the Main Box to the first Relay Box (relays 1-40) using the Twisted Pair Wire
provided. The 24 Vdc for the Second Relay Box (relays 41-56) must be connected to the External Power Supply (See Figure 15).
The supply voltage for the External Power Supply needs to come from the same breaker as the Main Box.
1
2
3
4
Item Description
1 Main Box
2 Relay Box
3 2nd Relay Box
4 External Power Supply
5 Dip Switch #1 (In Off Position)
Figure 15. 56 Output Control Mounting
5
ON OFF
Do NOT run 24 Vdc and I/O Net wire close to and/or parallel with line (120 Vac or greater) wires. Doing so can cause operational
failure in the Control and Void Warranty. If 24 Vdc or I/O Net wires need to cross line voltage wires make sure the wires cross at
a 90 degree angle (See Figure 13). Also, no other electrical devices such as transformers, light dimmers, additional relays, etc.
should be mounted inside the main box or near the 24 Vdc power or I/O Net wires.
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