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Wiring and Power Supply Information
Power
The EHS system needs 2 power supplies:
Outdoor unit
, 16 Amp for the 5kW, 20 Amp for the 9kW and 32 Amp for the 16kW.
The control box needs a 16 Amp supply, this wires into the top of the breaker (MCB) in the box. Many people remove the MCB from the
control box as there is already one in the distribution board. In this case wire Live to L1 and Neutral to N2.
The
Immersion heater
is connected into the control box terminals A3 Live and A4 Neutral; the control box controls the operation of the
immersion heater. If a fused spur is used it must be labelled “do not turn off” as switching it off will cause an error.
Communication cable
must be run from the outdoor unit terminals F1 F2 to the control box, terminals F1 F2. Use 2 core flex 0.5-1mm
(its 16V AC). It must not have any breaks in it or switches.
Remote controller
is normally installed next to the control box out of easy reach, it is mainly used for commissioning. You need to
supply a 2 core 0.5 – 0.75mm 2 core flex from F3 and F4 in the remote controller to F3 and F4 in the control box. Maximum distance is
100m.
Push the two hooks at the bottom of the Wired Remote Controller at the same time, and then pull up the front cover to separate it from
the rear cover
When you open the control box you will find all these wires:
The
red safety sensors
are not used and can be thrown away.
Red and blue sensors
ARE NOT INTERCHANGEABLE.
The
black cable
with the red plug is not used and can be thrown away.
The red, white and brown cables are not used throw them away
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