12
FIELD WIRING DIAGRAM
NOTES:
1.Factory wiring is in accordance with National Electrical Code (NEC). Field modi®- cations or additions must be in compliance with all applicable codes.
2.Wiring for main ®eld power supply must be rated 75° C minimum. Use copper for all units. Maximum incoming wire size for each terminal block is 500 kcmil.
3.Power for control circuit should be supplied from a separate source through a ®eld supplied fused disconnect with 30 amp maximum protection for 115 volt control circuits and 15 amp maximum protection for 230 volt control circuit. Connect con- trol circuit power to terminals 1 and 2 of TB4. Connect neutral side of supply to terminal 2 of TB4. Control circuit conductors for all units must be coppr only. 380/ 415 control power wired at factory. Requires ®eld supplied neutral connection.
4.Terminals 13 and 14 of TB2 are for ®eld external connection for remote
5.Terminals 11 and 12 of TB2 are for chilled water ¯ow switch (CWFS) and chilled water pump interlock (CWPI) functions. The contacts must be rated for dry circuit application capable of handling a 24 vac to 50 mA load.
6.Terminals T3 and T4 on relay board are for chilled water pump. The maximum load allowed for the chilled water pump relay is 125 va sealed, 1250 va inrush at 115 or 230 volt. Minimum load required is 25 va sealed.
| LEGEND |
| |
CCN | Ð Carrier Comfort Network | TB Ð Terminal Block | |
CWFS | Ð Chilled Water Flow Switch | Field Power Wiring | |
CWP | Ð Chilled Water Pump | ||
Field Control Wiring | |||
CWPI | Ð Chilled Water Pump Interlock | ||
EQUIP | Ð Equipment | Factory Installed Wiring | |
GND | Ð Ground |
|
