Technical data

Direct Wiring Layout

1.5mm² 3 Core

HOFR sheathed

cable

L = RED

N = BLACK

Fig 7 - Direct Electrical connections (schematic)

INSTALLATION - DIRECT UNITS

PLUMBING CONNECTIONS

PremierPlus direct cylinders require the following pipework connections.

Cold water supply to and from inlet controls.•

Outlet to hot water draw off points. •

Discharge pipework from valve outlets to tundish•

All connections are 22mm compression. However, 3/4”BSP parallel threaded ttings can be tted to the primary coil

connections if required.

ELECTRICAL SUPPLY

Direct models are tted with two 3kW immersion heaters as standard. It is recommended that these should be wired via a

suitable controller to BSEN 60730. The PremierPlus MUST be earthed.

All wiring to the unit must be installed in accordance with the latest IEE Wiring Regulations and the circuit must be protected

by a suitable fuse and double pole isolating switch with a contact separation of at least 3mm in both poles. The live and

neutral connections are made directly onto the combined thermostat and thermal cut-out located under the terminal cover(s)

mounted on the side of the unit. The earth connection should be made to the earth connection located to the side of the

immersion heater boss(es). The supply cable must be routed through the cable gland located on the unit casing beneath

the terminal housing.

DO NOT operate the immersion heaters until the cylinder has been lled with water.

SAFETY

DISCONNECT FROM THE MAINS SUPPLY BEFORE REMOVING ANY COVERS.

Never attempt to replace the immersion heater(s) other than with the recommended PremierPlus immersion heater(s).

DO NOT BYPASS THE THERMAL CUT-OUT(S) IN ANY CIRCUMSTANCES.

In case of difculty contact service support; contact details available at the back of this booklet.

THERMAL CUT-OUT RESET BUTTON

SPINDLE POSITIONS

= MINIMUM TEMP 10ºC

= MAXIMUM TEMP 72ºC

= APPROX 60 °C

ROTATE SPINDLE CLOCKWISE

FOR TEMPERATURE INCREASE

AND COUNTER CLOCKWISE

FOR TEMPERATURE DECREASE

TEMPERATURE ADJUSTING

SPINDLE

Fig 8 - Adjustment details