29
Installation and Servicing
Section 2 - Installation
INST
ALLA
TION
Ensure all boss blanking plugs are removed before
connecting hardware.
WATER CONNECTIONS
The boiler flow and return pipes are supplied fitted to the
boiler and ready for top connection.
Top Connection
Connect the system pipework to the boiler flow and return
pipes using compression fittings.
An optional stand-off kit is available where system pipework
needs to be taken downwards.
GAS CONNECTION
IMPORTANT
The gas service cock is sealed with a non-
metallic blue fibre washer, which must not be overheated when
making capillary connections.
For details of the position of the gas connection:
All isolation
handles are
shown in the
open position.
Yellow
Handle
205862-10073
Gas Supply
Refer to Gas Supply
1.9
return
flow
2.22 CONNECTIONS
2.23 ELECTRICAL CONNECTIONS
The mains supply to the boiler and system wiring centre
shall be through one common fused double pole isolator.
For heating systems, and where practicable replacement
boiler installations, the isolator shall be situated adjacent to
the appliance.
Note.
The appliance must be wired with a permanent live
supply or the boiler warranty will be invalid.
A mains supply of 230 V ~ 50Hz is required.
The fuse rating should be 3 A. All external controls and wiring
must be suitable for mains voltage.
Wiring external to the boiler MUST be in accordance with
the current I.E.E (BS7671) Wiring Regulations and any local
regulations.
Wiring should be 3 core PVC insulated cable, not less than
0.75 mm
2
(24 x 0.2 mm), and to BS 6500 Table 16.
2.24
INSTALLER WIRING
The boiler must be connected to a permanent live supply
which must NOT be switched by thermostats / programmers.
To install the mains cable;
1. Isolate the mains supply to the boiler.
2. Remove the front panel.
3. Swing the control box down into the service position, unclip
and swing back the installer wiring cover to latch into the
retaining clips.
4. Route incoming cable through a grommet in the bottom
panel, (note that the grommets are “blind” and will require
puncturing) and securing using the strain relief.
5. Connect the mains cable to the terminal block as shown.
6. Close the installer wiring cover ensuring that it is located
correctly and that the cable is retained into the strain
relief as shown.
7. Swing the control box back up into the operating position
and re-fit the front panel ensuring a good seal is made.
Refer to Section
3.4
WARNING:
This appliance must be earthed