16
Fig. 16
Fig. 15
Optional devices
(24V) terminal block
Mains (230V)
terminal block
A
B
B
cover
C
4.6.3
COLD WATER INLET (fig. 6 & 14)
The appliance is supplied with a 15mm combined
stopcock and double check-valve, connect a
15mm pipe to the inlet of the stopcock and tighten
both nuts.
4.6.4
HOT WATER OUTLET (fig. 6 & 14)
The appliance is supplied with a 15mm outlet
connection, connect a 15mm pipe to the outlet
connection and tighten both nuts.
4.6.5
SAFETY VALVE (fig. 6 & 14)
Connect a discharge pipe to the fixing jig connec-
tion and tighten. The discharge pipe must have a
continuous fall away from the appliance to outside
and allow any water to drain away thereby eliminat-
ing the possibility of freezing. The discharge pipe
must terminate in a position where any water –
possibly boiling – discharges safely without caus-
ing damage or injury, but is still visible.
4.6.6
CONDENSE PIPE
During normal operation the boiler produces con-
dense which is collected in a trap located in the
lower part of the boiler. A flexible pipe (condense
outlet pipe) is connected to the outlet of the trap.
The flexible pipe must be connected to a plastic
waste pipe only. The plastic waste pipe must have
a minimum of a 3° fall towards the drain. Any
external run of pipe should be insulated to prevent
the risk of freezing.
CONNECTING THE CONDENSATE OUTLET
Gently pull the condense outlet pipe down from its
location inside the boiler until it protrudes from the
underside of the boiler. Connect a suitable plastic
(not copper) pipe (no less than 20mm diameter) to
the outlet pipe and ensure it discharges in accord-
ance with building regulations or other rules in
force.
4.7
ELECTRICAL CONNECTIONS
The electrical supply must be as specified in
section 3/3A. A qualified electrician should con-
nect the electrical supply to the appliance. If
controls – external to the appliance – are required,
a competent person must undertake the design of
any external electrical circuits, please refer to
section 8 for detailed instructions.
ANY EXTERNAL CONTROL OR WIRING MUST
BE SERVED FROM THE SAME ISOLATOR AS
THAT OF THE APPLIANCE.
The supply cable from the isolator to the appliance
must be 3-core flexible sized 0.75mm to BS 6500 or
equivalent. Wiring to the appliance must be rated for
operation in contact with surfaces up to 90 °C.
4.7.1
CASING REMOVAL (fig. 15)
Remove transit screws
C
once the boiler has been
mounted on the wall.
To gain internal access to the appliance you must
first remove the casing, proceed as outlined below:
●
locate and remove the screw
A
;
●
remove the cover from the underside of the
appliance casing;
●
locate and remove the 2 screws
B
located at the
Left & Right of the underside of the casing;
●
lift the casing upward to disengage it from the top
locating hooks and then remove;
●
store the casing and screws safely until re-
quired. Re-fit in the reverse order.
4.7.2
APPLIANCE TERMINAL BLOCK
The appliance terminal block is located on the rear
of the control fascia. Remove the casing as
described in 4.7.1. Lift the control fascia upward
and lower it. Locate the terminal block covers (see
fig. 16).
NOTE
The appliance comes with a factory fitted link to
allow basic operation of the boiler via the mode
selector switch. If it is anticipated that external
controls will be required please refer to the wiring
diagrams in section 8 for more detailed information.
