ESP Varimax I ASHP, Installation And Operation Manual

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16 of 52
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PASRW040-D-BP
7.3 Isolation Switch
The heat pump MUST be connected to the power supply through a two
port rotary isolation switch a two port rotary that
has at least a 3mm contact separation at all poles,
fixed in close proximity to the unit and suitably
positioned for general and emergency use as
required by relevant Regulations. The switch must
NOT be attached to the unit itself. The isolation
switch must be suitable for the unit electrical duty and comply with
applicable Regulations.
7.4 Cable Routing
All wiring should be routed neatly, be kept as far away as possible from
the units water pipes and valves and comply with relevant Regulations.
High voltage and low voltage wiring should be clearly separated.
7.5 Before You Start
Before starting to wire in the power supply to the unit, please check that
the power supply is suitable for the unit (e.g. single phase, correct size
cable, MCB etc. is available) having taken into account the requirements
of the entire site. The unit power specification is stated on a label on the
side of the unit. We recommend the use of a dedicated 32 Amp Type C
MCB for connection of the power supply to the consumer unit.
7.6 Wiring-in The Unit
The following points should be noted in relation to power supply wiring
and system components:

Open the front and top panels to access the electrical
connection terminals.

The power supply must go through the protective wire aperture
in the unit casing and be connected securely to the terminals in
the control box.
Typical Isolation Switch