152 How to fi x cableConnecting with external device (optional)• All connections shall follow to the local national wiring standard.• It is strongly recommended to use manufacturer-recommendedparts and accessories for installation.• For connection to main PCB 71. Two-way valve shall be spring and electronic type, refer to “FieldSupply Accessories” table for details. Valve cable shall be (3 x min1.5 mm2), of type designation 60245 IEC 57 or heavier, or similarlydouble insulation sheathed cable.* note: - Two-way Valve shall be CE marking compliancecomponent.- Maximum load for the valve is 12VA.2. Room thermostat cable must be (4 or 3 x min 0.5 mm2 ), of typedesignation 60245 IEC 57 or heavier cord, or similarly doubleinsulation sheathed cable.3. Extra pump cable shall be (2 x min 1.5 mm²), of type designation60245 IEC 57 or heavier.4. Boiler contact cable shall be (2 x min 0.5 mm²), of typedesignation 60245 IEC 57 or heavier.5. External control shall be connected to 1-pole switch with min3.0 mm contact gap. Its cable must be (2 x min 0.5 mm2), doubleinsulation layer of PVC-sheathed or rubber-sheathed cable.* note: - Switch used shall be CE compliance component.- Maximum operating current shall be less than 3Arms.6. Room sensor zone 1 cable shall be (2 x min 0.3 mm²) doubleinsulation layer of PVC-sheathed or rubber-sheathed.7. Outdoor air sensor cable shall be (2 x min 0.3 mm²) doubleinsulation layer of PVC-sheathed or rubber-sheathed.Power Supply 1RCCB/ELCBPower Supply 2RCCB/ELCBHolder(Clamper)Indoor terminal forconnecting cablesMain PCB 7How to guide the optional cables and power supply cord(view without internal wiring)Optional cables:• External control cable• Room sensor zone 1• Outdoor air sensor cable• Remote controller cableOptional cables:• 2-way valve cable• Room thermostatzone 1 cable• Extra pump cable• Boiler contact cable• Power Supply 1 cord• Power Supply 2 cord• Indoor Unit/Outdoor UnitConnecting cable• For connection to Optional PCB 71. By connecting Optional PCB, 2 Zone temperature control canbe achieved. Please connect mixing valves, water pumps andthermistors in zone 1 and zone 2 to each terminals in Optional PCB.Temperature of each zone can be controlled independently byremote controller.2. Pump zone 1 and zone 2 cable shall be (2 x min 1.5 mm²), of typedesignation 60245 IEC 57 or heavier.3. Solar pump cable shall be (2 x min 1.5 mm²), of type designation60245 IEC 57 or heavier.4. Pool pump cable shall be (2 x min 1.5 mm²), of type designation60245 IEC 57 or heavier.5. Room thermostat zone 1 and zone 2 cable shall be (4 x min0.5 mm²), of type designation 60245 IEC 57 or heavier.6. Mixing valve zone 1 and zone 2 cable shall be (3 x min 1.5 mm²),of type designation 60245 IEC 57 or heavier.7. Room sensor zone 1 and zone 2 cable shall be (2 x min 0.3 mm²),double insulation layer (with insulation strength of minimum 30V)of PVC-sheathed or rubber-sheathed cable.8. Buffer tank sensor, pool water sensor and solar sensor cableshall be (2 x min 0.3 mm²), double insulation layer (with insulationstrength of minimum 30V) of PVC-sheathed or rubber-sheathedcable.9. Water sensor zone 1 and zone 2 cable shall be (2 x min 0.3 mm²),double insulation layer of PVC-sheathed or rubber-sheathed cable.10. Demand signal cable shall be (2 x min 0.3 mm²), double insulationlayer of PVC-sheathed or rubber-sheathed cable.11. SG signal cable shall be (3 x min 0.3 mm²), double insulation layerof PVC-sheathed or rubber-sheathed cable.12. Heat/Cool switch cable shall be (2 x min 0.3 mm²), double insulationlayer of PVC-sheathed or rubber-sheathed cable.13. External compressor switch cable shall be (2 x min 0.3 mm²),double insulation layer of PVC-sheathed or rubber-sheathed cable.Power Supply 1RCCB/ELCBPower Supply 2RCCB/ELCBHolder(Clamper) Indoor terminal forconnecting cablesMain PCB 7Optional PCB 7How to guide the optional cables and power supply cord(view without internal wiring)