Technical data

17Installation and maintenance instructions ecoTEC exclusive 0020017768_05
5.9 Condensate discharge
7
d
Soakaway
c
6
5
Gulley
a
Internal
stackpipe
3
4
3
b
Internal
discharge system
1
2
Fig. 5.11 Condensate discharge
The ecoTEC exclusive units are equipped with a normal
water condensate collector where the condensate is
continuously diverted into the drain pipe.
• Connect the condensate drain (1) of the boiler to a
condensate drain pipe (2) which has a minimum
internal diameter of 19 mm (22 mm outside diameter
for all external pipes) and which is made from an
acid-resistant material (e.g. plastic overflow pipe).
h
Note!
The drain pipe connected to the condensate
drain of the boiler must have a constant
gradient (45 mm per metre) and should be
installed and terminate within the building to
prevent the possibility of freezing up.
The condensate drain pipe should terminate in a
suitable location, e.g.:
a) The drain pipe should preferably terminate in the
floor of the house in the ventilation duct (at least
450 mm above the duct base). There must be a siphon
(3) fitted in the line (mounted in the boiler) producing
a connection head of at least 75 mm of water.
A ventilation valve (4) must be fitted in the drain pipe
in front of the siphon. The connection to the ducting
should not allow overflow into another drain pipe or
allow overflow from another drain pipe into the
condensate drain pipe. This can be achieved by
keeping a gap between the pipe branches of at least
110 mm, with a duct diameter of 100 mm, and 250 mm
with a duct diameter of 150 mm.
b) Connection into the domestic waste water drain pipe
(e.g. a sink or washing machine) with an external
termination.
The condensate drain pipe should have a minimum
diameter of 22 mm, without length restriction, and
also be fitted with a siphon (3) having a connection
head of 75 mm (fitted within the boiler already). The
connection should be made after the drain siphon if
possible. If the installation is only possible in front of
the siphon, there must be a ventilation valve between
the two siphons. This is normally provided in a drain.
c) Draining into a gully (5) under the grid (6) and above
the water level. The external piping should be kept as
short as possible to minimise the frost risk, and
should be no longer than 3 m.
d) To the condensate absorption point (drainage ditch) (7).
The external pipe should have a maximum length of
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". The condense trap (1)
must be filled with water as described in the relevant
chapter before the boiler is commissioned.
5.10 Electrical connection
d
Danger!
The electrical installation may only be
undertaken by an authorised engineer.
Risk of fatal electric shock from touching live
connections. Always disconnect the power
supply first by pulling the plug out of the wall
socket. Only after this can the installation be
undertaken. Continuous voltage is present on
the mains connection terminals L and N, even if
the main switch is turned off!
5.10.1 Mains connection
The appliance is fitted with a 1.0 m long connection
cable with mains plug. The three-pole mains plug is
fitted with a 3.0 A fuse. The connection cable is wired
into the appliance in the factory.
Connection to the mains supply shall be made via the
fused 3 pin plug to an unswitched shuttered socket,
complying to the requirements of BS 1363.
Installation 5