BLOWER SPEED WIRING
| Unit | Orange | Brown | Black | Blue | Red |
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| 50VSA,B | Low | High | — | — | — |
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| 50VSC,D | — | Low | High | — | — | |
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| 50VSE,F | — | — | Low | High | — |
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| 50VSG,H | — | — | — | Low | High |
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| 50VSI,J | Low | High | — | — | — |
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| 50VSK,L | — | — | Low | High | — |
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| 50VSM,N | — | — | — | Low | High | |
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a50-8352
LEGEND
BR1 — Fan Relay Speed 1
BR2 | — Fan Relay Speed 2 | ||
CC | — Compressor Contactor | ||
CO | — Condensate Overflow | ||
CR | — Compressor Relay | ||
DAT | — Discharge Air Temperature | ||
FP1 — Freeze Protection Water Side | |||
FP2 | — Freeze Protection Air Side | ||
HP | — High Pressure Switch | ||
LP | — Low Pressure Switch | ||
LWT | — Leaving Water Temperature | ||
RV | — Reversing Valve | ||
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| Factory Low Voltage Wiring |
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| Factory High Voltage Wiring |
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Field Low Voltage Wiring
Field Line Voltage Wiring
Optional Block
Internal PCB Connection
Quick Connect Terminal Screw Terminal
Relay Coil
Capacitor
High Pressure Switch
Low Pressure Switch
Temperature Thermistor
Condensate Switch
Relay Contacts
NOTES:
1.Used for optional communicating thermostat.
2.Cut JP1 or JP2 for dry contact output accessory relay 1 and 2.
3.If a single stage thermostat is used, place a jumper wire between Y1 and Y2 at P1 terminal.
4.If the disconnect option is not installed, connect the power to the L1 and L2 lugs on the compressor contactor.
5.Accessory relays
6.For
7.Before connecting BacNet™ or LonWorks® card, connect com- municating thermostat, then short J1
Fig. 10 — Typical 50VS Unit Control Wiring
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