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ACCESSORIES INSTALLATION
92
External pump
External pump can be required when the room to take floor heating is too long or the pressure
drop of heat emitter is too large to produce the required flow rate.
Also, the external pump shall be installed to assist water circulation when the buffer tank is
installed.
How to wire external pump
Follow below procedures step 1 ~ step 3.
Step 1. Check if the power of the unit is turned off.
Step 2. Disassemble front panels and distinguish terminal block in Indoor PCB.
Step 3. Connect signal cable to terminal block fully.
Indoor PCB
PUMP A2
External pump
(Voltage free)
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