Pressure Relief Valve; Connecting The Flue System To The Boiler; Electrical Connection; General Requirements - Vaillant ecoTEC plus 612 Instructions For Installation And Servicing

4 Boiler installation sequence
ecoTEC plus system boiler
Fig. 4.11 Heating-side flow and return connection for ecoTEC
plus system boiler
• Insert a seal (1) and fit the service valves (2) to the
flow and return connection of the appliance.
• Fit a union nut (4) and a compression olive (3) to the
22 mm pre-bended copper tail (5) .
• Fully insert pipe (5) into the service valve. Tighten the
union nuts in this position.

4.12.2 Pressure Relief Valve

min.
180
Fig. 4.12 Installing the drain pipe on the pressure release valve
of the heating system (picture shows ecoTEC plus
combination boiler)
24
Supplied By www.heating spares.co Tel. 0161 620 6677
1
2 The pressure release valve for the heating system is
integrated in the appliance.
3
4 • Position the seal (1) and screw the drain pipe (2) on to
5
the pressure release valve.
The discharge pipework should be as short as possible
and installed with a continuous fall away from the boiler.
The pipe should terminate in a position which ensures
that any discharge of water or steam from the valve can-
not create a hazard to persons in or around the premis-
es, or cause damage to any electrical components or
external wiring, and the point of discharge should be
clearly visible.

4.13 Connecting the flue system to the boiler

• Refer to separate air/flue duct installation instructions
included with the boiler.

4.14 Electrical connection

4.14.1 General requirements

All electrical work shall be carried out by a competent
person and shall comply with BS 7671 (IEE Regulations).
In the Republic of Ireland, 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
1
to the mains supply shall be made via a fused 3 pin plug
2
to an unswitched shuttered socket, both complying with
the requirements of BS 1363.
(Alternatively, connection may be made via a 3 A fused
3
double pole isolator having a contact separation of at
least 3 mm in all poles and supplying the boiler and con-
trols only). The point of connection to the mains supply
must allow complete electrical isolation of the boiler and
its ancillary controls. 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.
Caution!
To ensure fumes do not escape through the
syphon of the boiler the trap must be filled with
water before the boiler is turned on. Therefore
the discharge pipework should be installed so as
not to interfere with the removal and refitting
of the condensate trap, we recommend the out-
let pressure release valve pipe supplied is not
shortened.
You must leave a bottom clearance of at least
180 mm below the condensate trap for removal
and refitting.
Danger!
Electrocution caused by touching live parts can
be fatal.
Before working on the appliance, turn off the
power supply and secure against restart.
Instructions for installation and servicing ecoTEC
2
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