installation

Regulations

All unvented units with a capacity over 15L capacity must be installed by a competent installer in accordance with the following Regulations:

England and Wales - Building Regulation G3
Scotland - Technical Standard P3
N Ireland - Building Regulation P5

Siting

With no header tanks to consider, Tribune HE units can be sited almost anywhere in the house. Tribune HE can supply outlets both above and below its location. Tribune HE must be fixed VERTICALLY on a flat surface capable of holding its weight.

Water Supply

An adequate water supply is vital to ensure Tribune HE produces the high performance of which it is capable. We recommend a minimum supply of 1.0 bar with a flow rate of 25 litres/min. The maximum supply pressure is 16 bar.

Compatible Boilers

Gas or oil fired fitted with an integral control thermostat and cut-out. Any heat source that lacks full thermostatic control such as most solid fuel boilers, Agas, Rayburns and Stanleys cannot normally be connected to any unvented system.

The Primary circuit may be Open Vented or Sealed (operating at up to 7 bar). The primary circuit must be pumped.

Connection Sizes

Cold Inlet - 22mm compression.
Hot Outlet - 22mm compression.
Coil connections - 22mm compression.
Safety Valves - 15mm compression outlet.
Inlet Control Set - 22mm compression inlet and outlet.
Tundish - 15mm compression inlet / 22mm compression outlet.

Secondary Return

A dedicated 22mm secondary return connection is fitted to 210, 250 and 300 litre sizes. A swept tee (not supplied) could be used to provide a secondary return on the smaller sizes.

Electrical Wiring

Controls should be wired to the boiler / programmer etc. in accordance with the control scheme being used. Although compatible with Y, W or S Plan layouts, Tribune HE units are perhaps best suited to installation as an S Plan since we already supply one of the two port valves necessary, so reducing installation costs compared to other plans.

Each immersion heater must have a permanent connection via a double pole-linked isolating switch with a minimum rating of 13 amps. All electrical wiring must comply with the latest IEE wiring regulations.