Modular communications
Note: The maximum number of modules connected within one control group must not
exceed 32 and each module must have a unique address set using the module address switch.
Set all addresses before power is applied in order to avoid damage.
For information on settings, refer to the Modular units installation in Form 150.89-QSG1.
Figure 44: Power supply connection
Note:
• For the appropriate power supply, refer to the voltage and current on the nameplate.
• For 0035 units, connect customer power to the control panel and for 0070, 0105, and 0140
units, connect customer power to the SPC box. Internal wiring between the SPC box and
control panel of individual modules is completed in factory.
• Deploy a leakage current protector in the customer circuit breaker, and ensure there is a
reliable ground connection on site.
• For any discrepancy on site, such as capacitance decreases, refer to UL standards and
requirements by cable manufacturers.
• Only use copper conductors for the power supply cable.
63YMAE Air-Cooled Inverter Scroll Chiller and Heat Pump
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