Vaillant ecoMAX 635, Instructions For Installation And Servicing

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4 Boiler installation sequence
Instructions for installation and servicing ecoMAX
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4.12 Connection to a uniSTOR cylinder
• For connecting a Vaillant uniSTOR cylinder please
refer to the uniSTOR installation instructions provided
with the cylinder.
4.13 Connect the flue system to the boiler
• Refer to separate air/flue duct installation instructions
included with the boiler.
4.14 Electrical installation
4.14.1 General requirements
All electrical work shall be carried out by a competent
person and shall comply with BS7671 (IEE Regulations).
In IE, reference should be made to the current edition of
the ETCI 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 to the
requirements of BS1363.
(Alternatively, connection may be made via a 3 A fused
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
BS6500 tables 6, 8 or 16 (3 x 0.75 to 3 x 1.5 mm
2
) should
be used.
Attention!
This appliance must be earthed.
Note!
Do not use boiler terminal connections 7–8–9.
Attention!
Ensure that all cords pass through the cable
clamps in the rear of the control box and are
securely fixed. Ensure that the power supply is
connected such that the current carrying con-
ductors become taut before the earth conductor
should the supply cord slip from the cable clamp.
Danger!
Mains connection terminals L and N remain live
even when the boiler on/off control is switched off.
4.14.2 Connection to the main supply
• Remove the front case and lower the control panel.
• Unclip the bottom of the terminal box cover and hinge
back to reveal the connection plugs.
• Pull out the power L, N and earth plug.
• Feed the power supply flex into the appliance and the
control panel through the cable clamps provided and
tighten.
• Connect the flex to the L,N and earth plug, reconnect
plug to terminal block.
Green/yellow (earth) wire – boiler terminal Earth sign
Blue (neutral) wire – boiler terminal N
Brown (live) wire – boiler terminal L
Note!
Do not use boiler terminal connections 7–8–9.
• Refit the terminal box cover by pushing into place until
it clips back into position.
• Raise the control panel.
Fig. 4.10 Wiring system
Fig. 4.11 Exposed rear view of electronic box
L N
230V
80020014605_00GB_032006 22.02.2006 21:35 Uhr Seite 16