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4.6.5
SAFETY VALVE (fig. 16)
Connect the safety valve connection pipe to the
safety valve outlet. Connect a discharge pipe to
the other end of the safety valve connection pipe
and tighten.
The discharge pipe must have a
continuous fall away from the appliance to outside
and allow any water to drain away thereby eliminating
the possibility of freezing.
must terminate in a position where any water –
possibly boiling – discharges safely without causing
damage or injury, but is still visible.
4.6.5
CONDENSE PIPE
During normal operation the boiler produces
condense which is collected in a trap located in
the lower part of the boiler.
(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 3º 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 approximately 100mm
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 accordance 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
connect 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.
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 90ºC.
4.7.1
CASING REMOVAL Fig. 17
To gain internal access to the appliance you must
first remove the casing, proceed as outlined below:
• Remove the 4 screws (B) located on 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 (B) safely until
required. 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. Gently pull the control panel
forwards and down. Locate the terminal block cover
(see fig. 18).
NOTE
The appliance comes with a factory fitted link
('TA') 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.
The discharge pipe
A flexible pipe
Fig. 18
ANY
Fig. 19
4.7.3
Fig. 17
Optional devices
(24V) terminal block
CONNECTING THE MAINS (230V) INPUT (see
FIG. 19).
Unhook and remove the terminal block cover
(230V). Pass the cable through the cable anchorage
point.
Connect the supply cable wires (LIVE, NEUTRAL,
& EARTH) to their corresponding terminals (L, N,
& E) on the appliance – high voltage – terminal
block. When connecting the EARTH wire, ensure
that it's left slightly longer that the others, this will
prevent strain on the EARTH wire should the cable
become taut.
Do not remove the link wire unless additional
external controls are to be fitted (see section 8).
The securing screw on the cable anchorage should
now be tightened. This must be done before the
terminal block cover is re-fitted in its position.
NOTE
It is the installer's responsibility to ensure that the
appliance is properly Earthed. Vokera Ltd. cannot
be held responsible for any damages or injuries
caused as a result of incorrect Earth wiring.
B
Mains (230V)
terminal block
15
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