ecoTEC exclusive installation and maintenance instructions / 0020017768_02
16
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 inter-
nal diameter of 19 mm (22 mm outside diameter for all
external pipes) and which is made from an acid-resist-
ant material (e.g. plastic overflow pipe).
h
Note!
The drain pipe connected to the condensate
drain of the boiler must have a constant gradi-
ent (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 suita-
ble 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 connec-
tion head of at least 75 mm of water. A ventilation
valve (4) must be fitted in the drain pipe in front o
f
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 ter-
mination. The condensate drain pipe should have a
minimum diameter of 22 mm, without length restric-
tion, and also be fitted with a siphon (
3
) having a con-
nection head of 75 mm (fitted within the boiler al-
ready). 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
section before the boiler is commissioned.
5.10 Electrical
connection
d
Danger!
The electrical installation may only be under-
taken by an authorised engineer.
Risk of fatal electric shock from touching live
connections. Always disconnect the power sup-
ply 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 fit-
ted 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.
5.10.2 Connection of controllers, accessories and
external installation components
The following controllers, accessories and installation
components can be connected to the ecoTEC exclusive
(see Table 5.2).
The installation should be carried out in accordance with the
individual instruction manual. The required connections to
the electronic system of the boiler (e.g. for external control-
lers, external sensors etc.) should be undertaken as follows:
• Remove the front cover of the device, and lower the
electronic box forward.
• Unclip the rear cover of the electronic box and hinge
the cover upwards.
• Insert the connection lines of the components to be
connected through the cable openings (
1
) on the left
hand side of the underside of the appliance.
5 Installation
