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5 Before installation
5
Before installation
5.1
Installation standards and rules
5.2
Installation requirements
22
800 System 2
Warning
Installation, repair and maintenance must only be carried out by a
competent person. This document is intended for use by compe
tent persons.
Installation must be carried out in accordance with the prevailing regula
tions, the code of practice and the recommendations in these instructions.
Installation must also respect the following points:
This instruction manual and any other applicable documentation
Building Regulations
British Standards
Gas Safety Regulations
Water Supply Regulations
5.2.1
Gas supply
The gas installation should be in accordance with the relevant standards.
In GB this is BS 6891 (NG). In IE this is the current edition of IS 813
Domestic Gas Installations.
The connection to the appliance is a 22 mm copper tail located at the
rear of the gas service cock.
Ensure that the pipework from the meter to the appliance is of adequate
size, and the demands of any other gas appliances in the property are
taken into consideration. Do not use pipes of a smaller diameter than the
boiler gas connection (22 mm) UNLESS the stated gas rate can be
achieved with pipe of lesser diameter and with all other gas appliances
operating at maximum rate.
5.2.2
Electrical supply
External wiring must be correctly earthed, polarised and in accordance with
relevant regulations/rules. In GB this is the current IEE Wiring Regulations. In
IE reference should be made to the current edition of ETCI rules.
The mains supply is 230 V ~ 50 Hz fused at 3 A.
Important
The method of connection to the electricity supply must facilitate
complete electrical isolation of the appliance.
Connection must be via a fused double-pole isolator with a
contact separation of at least 3 mm in all poles and servicing the
boiler and system controls only.
The boiler must be connected to the mains fused 3 A 230 V 50 HZ
supply & control system using cable of 3 core 0.75 mm 3183Y multi
strand flexible type.
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