Manual

Appendix B (Continued)
Central Desk Control Low Voltage Wiring Specifications
Length of Run Total Length Wire Gauge
400 feet (120 m) 800 feet (240 m) 22
550 feet (155 m) 1100 feet (330 m) 20
1000 feet (300 m) 2000 feet (600 m) 18
1500 feet (450 m) 3000 feet (900 m) 16
2400 feet (730 m) 4800 feet (1440 m) 14
NOTE: The following points are the MINIMUM requirements needed to operate remote PTACS safely and
within design specifications.
1. Central Desk Control panel switches and transformers are field supplied. Switches should be SPST,
minimum rating of 0.5 amps inductive at 24 volts.
2. Units will not operate with switches closed. 24V supplied to the unit will DISABLE unit. See chart at left.
3. Minimum VA rafing of transformer is 9.8VA per unit. (9.8 X # of units determine totalVA needed for entire
installation).
4. Low voltage transformer is limited to maxVA per NEC 725-31.This may require multiple transformers for
large installations.
5. Consult the table at left for minimum wire gauges needed for any given low voltage wire run.
Appendix C. Electrical Wiring Options
For All 265V Models
265 volt units come shipped with a junction box under the control box. Remove the junction box cover and attach a 90°
electrical elbow and a 1/2" flexible conduit (separate accessory or field supplied). If not already in place, route the conduit
down through the floor taking care that hole in the floor is located directly below the notch in front panel. Make appropriate
electrical connections within the junction box, and reattach the junction box cover to the control box.
Wiring Diagram
Junction Box
Cover
Rating Plate
Fuse Holder
_pire Nuts (Field
plied) /
I NOTE: When installing a flush-floor mounted unit with
conduit, make provisions to allow conduit to be removed
in case of future service needs to chassis.
1/2" Flexible
Conduit
(Accessory or
Field Supplied)