The company reserve the right to alter size, shape and specification without prior notice
TMS-UT-0804-Z01-4
page 9
4.5 Connection to the electrical mains supply
Before working with the appliance, turn off the power supply (MCB) and secure against restart.
This device must be earthed.
Check that the electrical supply to the building has sufficient current and voltage to supply the boiler and other
appliances to be used.
Miniature circuit breakers (MCB) must be fitted in the wiring prior to the boiler. For MCB ratings see table on page
7. Connect the boiler to the mains using a double pole linked switch with 3mm contact gap in both poles.
Measure exact voltage between L and N lines prior to connecting boiler, if it 10% higher than nominal voltage on
appliance, appliance itself can be damaged.
Central heating control equipment – please note that all heating control
equipment (programmer, timer, thermostats etc MUST be supplied with power
from the boiler connections plate – see section 4.6. DO NOT supply with power
directly from the mains supply.
In order to connect power supply cable power connection protection cover (1) must be removed by
unwinding two nuts M6 and pulling protection cover out. Power cable must be connected directly to
RCD, earth must be connected to separate terminal (3). After connecting power cable and control
units, protective cover (1) must be put in place and tightened.
For 240V power supply RCD switch in boiler
from 4,8 up to 14,4 kW is 2-polle
Power supply connection
RCCB (RCD) connection close-up
Note:Power cables must be connected from bottom side of boiler with the use of provided
plastic inducer for electric cable.
Ensure that the wires are securely fixed.
The appliance must be connected to mains electricity and tested according to current IEE regulations. An NICEIC
inspection and completion certificate must be issued.
All exposed pipework must be earthed according to current IEE regulations
