Electrical Connection; Mains Connection - Vaillant ecotec plus Installation And Maintenance Instructions Manual

The connection to the stack should not be made in a
way that could cause cross flow into any other branch
pipe, or from that branch pipe into the condensate
drainage pipework. This can be achieved by
maintaining an offset between branch pipes of at least
110 mm on a 100 mm diameter stack and 250 mm on a
150 mm diameter stack.
b)connecting into the internal drainage branch (e.g. sink
waste) with an external termination, the condensate
drainage pipework should have a minimum diameter of
22 mm with no length restriction and should
incorporate a siphon with a 75 mm (3) (built into the
boiler) seal. The connection should preferably be made
down stream of the sink waste siphon. If the
connection is only possible upstream, then an air
break is needed between the two siphons. This is
normally provided by the sink waste.
c)in a gully (5) below grid level (6) and above the water
level. The external pipe length should be kept as short
as possible to minimise the risk of freezing and should
not be more than 3 m.
d)at a soakaway (condensate absorption point) (7). The
external pipe length should not be more than 3 m.
Further information can be obtained from "BS 6798
Specification for installation of gas–fired boilers of rated
input not exceeding 70 kW net".
Danger!
d
Risk of poisoning due to escaping flue gas!
The condensate drainage pipework must be
linked to the waste water piping by an open
transition as otherwise the internal siphon
could be sucked dry. Before the boiler is
switched on the siphon must have been filled
with water to prevent flue gas from leaking via
the siphon (see Chapter 6.2.3).
Installation and maintenance instructions ecoTEC plus 0020214490_00
5.8

Electrical connection

Danger!
e
Risk of fatal electric shock through contact
with live connections!
The electrical installation may only be carried
out by a recognised skilled trade company.
Always switch off the power supply first and
ensure that it cannot be switched back on
unintentionally. Only after this can the
installation be undertaken. Mains connection
terminals L and N remain live even if the boiler
main switch is turned off!
5.8.1

Mains connection

All electrical work shall be carried out by a heating
engineer and shall comply with BS 7671 (IEE
Regulations).
In IE, reference should be made to the current edition of
the ETCI (Electro-Technical Council for Ireland) rules.
The boiler is supplied for connection to 230 V, ~ 50 Hz
supply fused at 3 A rating. Connection to the mains
supply shall be made via a fused 3 pin plug to an
unswitched shuttered socket, both complying with the
requirements of BS 1363. (Alternatively, connection may
be made via a 3 A fused double pole isolator having a
contact opening of at least 3 mm in all poles and
supplying the boiler and controllers only). The point of
connection to the mains supply must allow complete
electrical isolation of the boiler and its ancillary
controllers. It should be readily accessible and adjacent
to the boiler. A 3 core flexible cord according to
BS 6500 tables 6, 8 or 16 (3 x 0.75 to 3 x 1.5 mm
should be used.
The nominal voltage of the mains must be 230 V; at
mains voltages greater than 253 V and less than 190 V
the functions may be impaired.
Installation 5
2
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