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4.9 Electrical Connection
4.9.1 General
The product must be installed by a competent KD NAVIEN trained electrician.
1) The fuse rating of the securable isolator shall be 13A
2) A mains supply of 230 V ~ 50 Hz is required.
3) All proprietary external controls and mains wiring must be suitable for mains voltage.
4) Wiring from the securable isolator to the product shall be 3 core PVC insulated flexible cord
not less than 1.5 mm
5) The electrical connection to the appliance shall be provided by means of a dual pole (live
and neutral) 30mA RCD protected supply. Where available the appliance shall be installed
on a spare way in the RCD protected side of the consumer unit.
6) Mains wiring external to the product must be in accordance with the current BS 7671
Requirements for Electrical Installation (Wiring Regulations) and any local regulations.
7)
Connection must be made in a way that allows complete isolation of the electricity supply –
a double pole switch having a 3 mm contact separation in both poles serving only the
product and system controls.
secured in the 'off' (isolated) position; this switch is to be located in an accessible position
within the Customer's installation.
8) Connection to the mains MUST be made in accordance with EN50438 and National
Regulations such as 'ER G83/1 – Recommendations for the connection of Small-Scale
Embedded Generators (SSEG) in parallel with public low-voltage distribution networks'.
9) The Distribution Network Operator (DNO) must be provided with information regarding the
SEG ESQS Guidance notes, installation on the day of commissioning – An example of the
SSEG Installation and commissioning confirmation form is shown in Table 11
10) The following information shall be displayed at the point of interconnection with the DNO's
Network;
a. A circuit diagram showing the circuit wiring, including all protective devices,
between the product and the DNO's fused Cut-Out. This diagram should also show
by whom all apparatus is owned and maintained.
b. A summary of the protection settings incorporated within the equipment. This can
be found in the KD NAVIEN Installers Paperwork Pack.
11) The installer shall provide labelling at the Supply Terminals (Fused Cut-Out), meter
position, consumer unit and at all points of isolation within the Users premises to indicate
the presence of a micro-CHP unit. An example of the warning label to be left on site is
shown is Diagram 4.6.
For indication of the required method of connection, refer to Diagram 4.7 –
product connection to the LV system through a dedicated radial final circuit.
Navien stirling engine m-CHP installation manual
2
.
The manual isolation switch shall be capable of being
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