Accessories Installation
50
Hydro Kit
External pump can be required when the room to take floor heating is too large or not
well-insulated.(potential free) Also, External pump is installed with buffer tank to retain sufficient
capacity.
How to install 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 (TB_EXT_PUMP) fully.
External pump
Relay
External Pump
TB_W_PUMP_C
Indoor PCB
Contact Signal
(Non Voltage)
Relay Power Source
(30 V DC / 1 A, 250 V AC / 1 A)
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