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|
| LEGEND |
AUX | — Auxiliary | M1 | — Evaporator Fan or |
C | — Compressor Contactor |
| Chilled Water Pump |
C1 | — Compressor Contactor | M2 | — Cooling Tower Pump |
| (XL start and first step of PW start) | M3 | — Cooling Tower Fan |
C2 | — Compressor Contactor | NEC | — National Electrical Code |
| (PW second step) | OPS | — |
CH | — Crankcase Heater | POR | — Pumpout Relay |
CHR | — Crankcase Heater Relay | PW | — Part Wind |
CR | — Control Relay | SW | — |
DTS | — Discharge Temperature Sensor | TB | — Terminal Block |
DX | — Direct Expansion | TDR | — Time Delay Relay |
FU | — Fuse | TM | — Timer Motor |
HPS | — | TR | — Timer Relay |
LLS | — Liquid Line Solenoid Valve | XL | — |
LPS | — |
|
|
Terminal Block Connector
Unmarked Terminal
Marked Terminal
Factory Wiring
Field Control Wiring
To indicate common potential only; not to represent wiring.
Splice
NOTES:
1.Factory wiring is in compliance with NEC. Any field modifications or additions must be in compliance with all applicable codes. Use copper,
2.Field power supply wiring must be 75 C minimum.
3.Compressor thermally protected.
4.Pilot duty control must be field supplied. Minimum contact rating must be 25 va.
5.60 Hz units have 120 volt control circuit. 50 Hz units have 230 volt control circuit. A separate source of supply at the correct voltage must be field supplied through a fused disconnect device with a
maximum rating of 15 A to TB2 connections L1 (Hot Side) and L2 (Neutral).
6.Open control circuit disconnect switch for servicing only. Discon- nect must remain closed for crankcase heater to operate.
7.A transformer of the following rating may be field supplied for 60 Hz units: 350 va.
8.Transformer must be fused and grounded per applicable codes.
9.If any of the original wiring furnished must be replaced, it must be replaced with 90 C wire or its equivalent.
10.Wiring is shown for single pumpout control. Single pumpout control should not be used on
Fig. 6 — Control Circuit Wiring for 06E/07E Units
6