Viessmann EA1 Installation And Service Instructions

11
Operating the heating circuit pump at low speed (night contact)
L
N
L
N
fÖ
S
P
aBJ
Ö
f-]
A
L
N
N PE
L
D
C
A
B
A
Circulation pump
B
Night contact input
C
Contactor
D
Separate power supply
In reduced mode, the connected heat-
ing circuit pump is operated at low
speed. The circulation pump must have
a switching input.
Select the function:
■ Group B: Coding address 5C:3/4/5
■ Group D: Parameter 41:3/4/5 (Gen-
eral group)
Connecting a circulation pump or a fault…
(cont.)
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Viessmann EA1 Specifications

General

Brand	Viessmann
Model	EA1
Category	Control Unit
Language	English