16
Electrical wiring
•
Connect the power wiring to the terminal block (TB) of the water chiller distribution cabinet.
•
Connect the control panel (installed indoor) and the master control board of the primary water
chiller with connecting line of control panel.
•
If the model is the one without water pump, please connect the power wiring of the cold water
pump to the corresponding terminal of the pump.
•
Earth the water chiller, cold water pump's motor (the model without water pump) and all devices
needing to be grounded.
•
If the electric heater is equipped, connect the power wiring and the control wiring on Terminal
TB2 of the electric heater.
•
If the fan coil two-way valve will be used for interlocking, jumper JP6 on the control panel shall
be disconnected on site, and connect the interlocking point (dry contact) to the point between
the control terminals 12 and U.
•
Connect the flow switch to the point between connecting terminals U (or L) and 15 of the water
chiller control box.
Power supply
Please refer to the wiring diagram on the cover plate of the water chiller control box; the
installation unit shall supply power with proper voltage and provide a suitable breaker to the
water chiller. For typical installation wiring diagram of the water chiller, please refer to Page
20~24. For the actual wiring diagram, please refer to the diagram on the cover plate of the
control box.
Electrical
WARNING
Before completion of electric wiring, please do not supply power to avoid possible injury or
death.
NOTICE:
• The voltage of the power supply shall change within ±10% of the standard value.
CAUTION
• Only copper conductor can be used for connection to the terminals, to avoid corrosion or
overheat.
For minimum current, fuse specification and electrical specifications of motor, please refer to
Table 2.
