Vailant ecoTEC plus 937, Инструкция по установке и обслуживанию

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Installation and maintenance instructions ecoTEC plus 937 0020031552_06
5.19 Electrical connection
5.19.1 General requirements
e
Danger!
Risk of fatal electric shock from live con-
nections.
Voltage is continuously present in the L and
N terminals of the turquoise coloured plug,
even when the main switch is turned off.
Before working on the switch box, always
switch off the power supply to the appli-
ance by removing the mains plug from the
socket or by disconnecting the optional cir-
cuit breaker.
e
Danger!
Risk of electrocution as a result of an
improper electrical connection.
An improper electrical connection may nega-
tively affect the operational safety of the
appliance and result in material damage or
personal injury.
The electrical installation must be fitted by
a competent person who is responsible for
complying with the existing standards and
guidelines.
Connect the appliance in accordance with
BS 7671 (IEE Regulations).
For IE: Observe the current ETCI regula-
tions (Electro Technical Council for Ire-
land).
Observe the corresponding installation
instructions for the electrical connection of
ecoTEC combi-heaters.
Earth the appliance.
b
Caution!
Risk of damage to the appliance.
The electronics may be damaged via a mains
supply at terminals 7, 8, 9 and "BUS".
Only connect the mains supply cable to the
terminals marked for the purpose.
The appliance is designed for connection to 230 V,
~ 50 Hz supply with a 3 A rating. Connection to the
mains supply shall be made via a fused 3 pin plug to an
unswitched shuttered, and should comply with BS 1363.
(Alternatively the connection can also be carried out
with a 3 A fused two-pole isolator, whose contact sepa-
ration at all poles is at least 3 mm and which supplies
only the appliance and controls). The connection must
permit complete isolation of the appliance and its con-
nected controller from the mains supply. It should be
easily accessible and be located in the proximity of the
combi boiler. Use a three core flexible cable in accord-
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ance with BS 6500, Tables 6, 8 or 16 (3 x 0.75 to 3 x 1.5
mm 2 ).
i
Ensure that all wiring passes through the
cable clamps in the rear of the control box
and are securely fixed.
Check that when connecting the mains wiring that
the current carrying conductors become taut before
the earth conductor should the supply cable slip from
the cable clamp.
5.19.2 Establishing the electrical connection for the
stratified storage tank
b
Caution!
Risk of cable damage.
Cables may become damaged if they come
into contact with hot parts of the appliance.
Observe the routing of the cable.
X12
X31
1
2
Fig. 4.15 Opening the electronics box
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5 Sequence of operations during installation