7
GB-016C_f.493
ALL WIRING MUST BE CARRIED OUT IN ACCORDANCE WITH
CURRENT IEE REGULATIONS. BS 7671
ALL ELECTRICAL CONNECTIONS MUST BE MADE BY A QUAL-
IFIED TRADESPERSON.
A load check should be carried out to ensure that there is a suf-
ficient current and voltage for the intended boiler installation.
Consideration should be taken into account with regard to the
remainder of the properties load requirements.
All boilers must be protected at the meter position with a double
pole fused switch with a minimum of 3mm contact separation. If
the boiler is not fitted local to the meter position then an isolation
switch must be fitted local to the boiler.
THIS APPLIANCE MUST BE EARTHED.
All pipe work must be earthed in accordance with the current IEE
Regulations – BS 7671
After completion of all electrical works, an electrical safety check
should be carried out i.e. short circuit, earth continuity, resistance
to earth and polarity check, and all relevant test certificates pro-
duced.
Never open the front cover until all power supplies to the boiler
have been disconnected.
ELECTRICAL CONNECTIONS
The boiler connections are clearly marked inside the boiler.
L N (24hr LIVE)
The 24hr live is the permanent live connection to the boiler from
the mains supply. External controls will require an independent
fused spur supplied from the consumer unit.
Boiler Protection
The recommended protection for hard wired boilers are as fol-
lows:
Model No. Boiler size Protection
FUSION 14.4kW 14.4kW BOILER 80 AMP Protection
FUSION 12kW 12kW BOILER 63 AMP Protection
FUSION 9kW 9kW BOILER 45 AMP Protection
FUSION 6kW 6kW BOILER 32 AMP Protection
External controls
We recommend the use of the EHC Select 107XL Programmer
and EHC TLX 4101 room stat for heating only installations.
For Heating and Hot water installations, we recommend the use
of the EHC Select 207XL programmer and heat pack.
The heat pack will incorporate all the relevant parts to comply with
current building regulations i.e. Motorized valves to control the
heating and hot water circuits and Room and cylinder thermostats
to control the room and water temperatures. This will also provide
boiler interlock. The use of TRV’s alone will not provide boiler
interlock.
We recommend the use of TRV’s, however they must not be used
in the room that has the room thermostat fitted.
Note: this control method is to comply with current building regula-
tions provided by TACMA, the Association of Controls Manufactur-
ers.
Programmer/Stat connections
The boiler PCB has a voltage free connection for the controls
(RP). Under no circumstances should 240V be connected to the
controller block as this will damage the boiler’s PCB and Void the
Manufacturers warranty.
The stat / programmer connections are clearly marked within the
boiler.
Only after all connections have been made and checked should
the system be filled with water and set to the proper pressure 1.5
bar (Sealed systems).
Check the system for leaks. If water leaks into the boiler this may
damage the boiler electrics and the manufacturers warranty will
be invalid.
Under no circumstances should the boiler be switched on when
the system is dry.
The boiler has an inbuilt flow sensor. If the boiler has been
switched on with a low or no water content, the system flow
meter will sense this and prevent the boiler from sending power
to the main elements.
After the system has been filled with water and has had a cold
flush the Fernox cleanser should be added, the system filled with
water, purged of air and set to the correct pressure 1.5 bar (sealed
systems). At this point the main power may be switched on.
At this stage you may carry out the cleansing and protection of
the system. Refer to the installation section. (See page 5).
After the cleansing and protection of the system has been done,
set the external controls to the customers selected times.
If an off-peak electric meter has been installed by an Electricity
Company to supply OFF-peak rate electricity at selected times,
the appropriate settings should be entered into to the system pro-
grammer to take advantage of the OFF-peak rate electricity.
ELECTRICAL CONNECTIONS AND CONTROLS
CONTROL PANEL WIRING CONNECTIONS
To main
control
board
Flow sensor
Outlet ow
sensor
connection
Inlet return
sensor
connection
Volt free
control
connection
To main control board
Flow sensor
Outlet ow sensor
connection
Inlet return sensor
connection
Volt free control
connection
UNDER NO CIRCUMSTANCES
SHOULD A VOLTAGE BE
TAKEN TO THE NA OR RP
CONNECTION AS THIS WILL
DAMAGE THE CONTROL
PCB AND INVALIDATE THE
WARRANTY
Q
Tout
Tin
NA
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