Specifications

Boiler installation sequence
Instructions for installation and servicing ecoTEC 839592_13 29
4
trap. If the connection is only possible upstream, then
an air break is needed between the two traps. This is
normally provided by the sink waste.
c) terminating 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 condensate absorption point (soakaway) (7). The
external pipe length should not be more than 3 m.
Refer to ‘BS 6798 Specification for installation of
gasfired boilers of rated input not exceeding 70 kW net’
for further information. Before operating the boiler the
condensate trap (1) must be filled with water as
described in relevant section.
4.12 Heating connection
b
Caution!
Risk of damage to flow and return valves
caused by heat transfer!
If the final connections are soldered, the heat
transferred during the process may damage
the flow and return valves.
> Do not solder fittings to the pipes whilst
connected to the flow and return valves.
> Cool and clean the pipes before fitting
them into the valves.
> Ensure all subsequent soldering operations
are carried out at least 450mm away from
the valves.
4.12.1 Heating flow and return connection
i
Before connecting the heating circuit to the
boiler, all pipework and radiators must be
thoroughly flushed to remove any installation
debris.
ecoTEC plus combination boiler
10
11
12
13
9
8
7
6
1
2
3
4
5
Fig. 4.9 Installing the heating flow and return connection for
ecoTEC plus combination boiler
> Insert the seal (1) and fit the service valve (2) to the
return connection of the appliance.
> Insert the seal (10) and fit the service valve (9) to the
flow connection of the appliance.
> Install the O-ring seal (12) on the return valve (11).
i
Lay the filling loop hose (13) above the pipe-
work elbows.