Samsung RC160MHXEA Installation And Maintenance Manual page 10

Wiring and Power Supply Information: Master
Power The EHS system needs 2 power supplies:
One connects into the outdoor unit, 20 Amp for the 9kW and 32 Amp for the size 16
The one for the control box is 3 Amp and wires into A1 and A2 on the PCB, the breaker must
be removed.
Communication cable
Must be run from the outdoor unit to the control box. Use 2 core flex 0.5-1mm (its 16V ac)
Sensors
The red safety sensor is to avoid over temperature, it plugs into a red socket T3 on the
controller PCB and must be fixed to the flow pipe of the heat pump before it joins the header
Thermostats/ timers and under floor heating manifolds
We recommend in all cases the heating should be controlled by an external field supplied
room stat / setback stat, time clock or a run signal from a boiler enable signal from under floor
manifolds. The heat pump run signal connects from B20 – B22, B20 is permanently live 240V
ac.
Pump
The circulation pump must be wired Live to B6 and neutral to B5, MAX pump power is 500
Watts. If two pumps are used wire them both to these terminals
Wiring and Power Supply Information: Slave
Power The Each EHS system needs 2 power supplies:
One connects into the outdoor unit, 20 Amp for the 9kW and 32 Amp for the size 16
The one for the control box is 16 Amp and wires into A1 and A2 on the PCB, the breaker must
be removed.
Immersion Heater
The immersion heater is connected into the control box terminals A3 Neutral and A4 Live, The
control box controls the operation of the immersion heater. If a fused spur is used it must be
labelled as switching it off will cause an error.
Communication cable
Must be run from the outdoor unit to the control box. Use 2 core flex 0.5-1mm (its 16V ac)
Sensors
The blue cylinder sensor plugs into a socket T4 on the
controller PCB and into the control sensor pocket in the cylinder
in the top ½ of the cylinder. Must be above immersion.
cylinder sensor needs to go 115mm into the cylinder; it must be
clipped so it can't pull out.
The red safety sensor is not needed.
Using two port valves
2 port valve for Hot water, wire brown wire to B9 and Blue to B7, the rest are not used.
2 port valve for heating zone 1 wire B14 live and B11 Neutral
Run signal
The run signal for this unit comes from terminal B2 in the mater unit and connects to
B22 in the slave unit.
Pump
The circulation pump must be wired Live to B6 and neutral to B5, MAX pump power is 500
Watts. If two pumps are used wire them both to these terminals
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The
©G Hendra January 2015 10