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Figure 9. Typical MicroTech 2000 WSHP unit controller single circuit wiring diagram
Notes:
1 . Unit is factory wired for 208V operation . If 230V power supply is used,
transformer must be rewired by disconnecting the power lead from the
red transformer primary wire and connecting the power lead to the orange
transformer primary wire . Place an insulation cap on the red transformer
primary wire .
2 . All temperature and pressure switches are normally closed .
3 . Wires 71 and 72 used only on units with no factory installed options .