24
VÄRMEBARONEN EP 31 300
Electrical installation
The installation must be carried out according
to existing rules and standards under the super-
vision of a qualified electrician.
Cables must be dimensioned according to the Electrical
Installation Rules.
Cables must be laid so that it is possible to open the
front and remove the roof plate for service. For minimum
ceiling height, see Technical data.
Light-current cables must not be laid in direct connection
with power cables as this may give rise to disruption.
Do not drill into the boiler's cover plates.
Cuttings can damage the boiler's electrical
equipment. M6 bolts are available for fixing
cable trays.
Power limiting
See 'Max. POWER (7)' or 'Max. POWER (15)' in the instal-
lation menu!
External control voltage
The boiler control circuit can be fed by an external 230V~
control with a 6 A fuse. The boiler must be preceded by an
all-pole switch with at least 3 mm breaking distance.
The connection between terminals 9-10 must be
removed.
1 2 3 4 5 6 7 8 9 10
X01
N
N
N
N
EXTERNAL CONTROL
230V~
N
1
4
If the boiler is supplied with an external control,
the boiler must be labelled to show this.
Power supply
Connection for PEN 4-core or 5-core cables; connection to
switch and earth block.
earth block: 40 Nm.
Tightening torque phase conductor; EP 31-70:
13.5 Nm
EP 84-300:
31 Nm
Aluminium cable must be greased with neutral contact
grease.
If 5-core cables are connected, the disconnector must be
removed from the earth block.
42
disconnector
earth block
Power supply to external unit
3
L
N
1 2 3 4 5 6 7 8 9 10
X01
N
N
N
N
≤
2 A
1
Circulation pump
See 'CP function' in the installation menu!
Potential-free closing contact for control to circulation pump,
max. load 230 V~, 2 A.
1
2
C
NO
≤
2 A
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The circulation pump must be labelled to show
that it is controlled by the boiler if the function
is used.
External alarm indication
Buzzer alarm for external alarm indication of low water level,
overheating protection triggered, PEC or safety equipment
triggered.
Potential-free alternating contact, max. 230 V~, 2 A.
1
2
3
C
NC
NO
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Terminals 1-2, C - NC, closed during operation.
Terminals 1-3, C - NO, closed during alarm.
