Wiring: General Wiring Requirements

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These instructions apply in the UK and Ireland only and must be followed except for any statutory obligations. Component specific electrical information may also be supplied in support of these instructions, however if there is any doubt please contact Thermal Integration Ltd. (Tel: 0345 2411441)

FAILURE TO INSTALL APPLIANCES CORRECTLY COULD LEAD TO PROSECUTION.

The appliance must be installed in accordance with, and comply to, the current: IEE Regulations, Building Regulations, Building Standards (Scotland) (Consolidation), Building Regulations (Northern Ireland), local water by-laws, Health & Safety Document 635 (The Electricity at Work Regulations 1989) and any other local requirements.

BRITISH & IRISH STANDARDS: Where no specific instruction is given, reference should be made to the relevant British and/or Irish Standard codes of Practice.

  • BS7074:1 Code of practice for domestic and hot water supply
  • EN12828 Central heating for domestic premises
  • BS7593 Treatment of water in domestic hot water central heating systems
  • ECTI National rules for electrical installations

CAUTION: ISOLATE THE MAINS SUPPLIES BEFORE STARTING ANY WORK AND OBSERVE ALL RELEVANT SAFETY PRECAUTIONS.

Danger of short circuit: When connecting the cables ensure that no cable pieces fall inside the control panel.

The Mains supply to the appliance must be through a fused double pole isolator situated next to the appliance. The isolator must have a contact separation of 3mm minimum in all poles and should isolate the appliance and all associated controls.

Unless otherwise stated, all Heat Interface Units should be connected to a mains 230V 50Hz Supply fused at 3 Amps.

All electrical connections with the Heat Interface Unit control panel are clearly marked as follows:

  • L = Live 230V
  • N = Neutral
  • E = Earth Earth Symbol.jpg

Any additional mains cable should comply fully with the current I.E.E. wiring regulations. It must have a minimum section of 0.75mm2 and be capable of withstanding a minimum of 85°C.