Cumberland 064-11343, Installation Manual

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Chapter 5: Expansion Box and Virtual Expansion Box Installation
WARNING
If the disconnect switch or the circuit breaker is used as a sectioning device, the
device must be correctly identified with which function of the controller opens the
circuit. The Off or Stop and On position must be clearly identified on the sectioning
device.
It is recommended to use a DPST disconnecting switch in series with a breaker. In the case of
the use of a SPST disconnecting switch, connect the SPST disconnecting switch to cut the hot
line with a neutral circuit case.
IMPORTANT: The SPST disconnecting switch circuit is allowed only in North America under 120Vac.
Over 120Vac in North America and whatever the voltage in International markets, only the
DPST disconnecting switch is allowed.
NOTE: A minimum wire gauge of 14 AWG (diameter of 1.63mm or cross sectional area of 2.08mm
2
) is
required for proper operation. The maximum current rating of each zone allowed is 8.0A. The min-
imum temperature insulation is 90 °C. A voltage insulation of 300V is recommended.
NOTE: The maximum breaker value per zone is 15 Amps max.
NOTE: Refer to local and national electrical codes.
NOTICE
For the big terminal blocks used for AC inputs, use a tightening torque from 0.7N*m
(6.2lbf*in) to 0.8N*m (7lbf*in) to fasten a wire gage from 10AWG (diameter of 2.58mm
or cross sectional area of 5.26mm2) to 14AWG (diameter of1.62mm or cross
sectional area of 2.08mm2).
WARNING
Installation must only be performed by qualified service personnel.
DANGER
Disconnect supply before servicing.
1. From an electrical distribution panel in series with disconnecting switches, follow the wiring diagram
to connect the main voltage supply to the system’s main inputs for each zone.
2. Open the disconnecting switches or breaker before wiring.
3. Plug the wires (L1 to L1, L2/N to L2/N) to the for each zone.
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