Sunrain YC-007TB1, Installation & Operation Manual, Page: 13 / 32

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7. Installation of electric devices
7.1 Electrical wiring
●The unit should use a dedicated power supply, power supply voltage with rated voltage.
●Unit power supply circuit must be ground, power supply wire and external grounding reliable connection,
and the external grounding is effective.
●Wiring must be constructed by the professional installation technicians in accordance with the circuit
diagram.
●Power line and signal line layout should be neat, reasonable, can not interfere with each other, but not
with the connecting pipe and the valve body contact.
● If the unit is not matching the power line, please supply specifications refer to provisions, wires
connecting is not allowed.
●After all wiring construction is completed, please check it before switch on the power supply carefully.
7.2 Electrical Wiring Specification
Model Electrical Wiring Specification
YC-007TB1 3*2.5 mm²
YC-010TB1 3*2.5 mm²
YC-012TB1 3*2.5 mm²
Terminal The terminal can connect the wire max. is 4 mm²
Figure 10
7.3 Circulation pump installation
The heat pump only provide the signal for circulation pump, must use an a.c. contactor to
connect the circulation pump.