Pumps 400 V; External Demand Via Switching Contact - Viessmann Vitocrossal 100 Installation Instructions For Contractors
Gas condensing boiler with matrix cylinder burner open flue and room sealed operation fully pre-assembled and wired
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Also See for Vitocrossal 100:
- Installation instructions for contractors (44 pages) ,
- Operating instructions manual (28 pages)
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Boiler electrical connection
Pumps 400 V~
L1 L2 L3 N PE
N
L
C
B
M
A
3~
Fig. 29
Pump
A
To the control unit
B
Contactor
C
External demand via switching contact
Connection options:
EA1 extension (accessory, see separate installation
■
instructions)
■
Plug
lH
When the contact is closed, burner operation is load-
dependent. The boiler water is heated to the set value
selected in coding address "9b" in group "General"/1.
The boiler water temperature is limited by this set
value and by the electronic maximum limit (coding
address "06" in group "Boiler"/2).
26
(cont.)
For switching the contactor
Rated current
Recommended connecting
cable
!
Please note
Live contacts lead to short circuits or phase fail-
ure.
The external connection must be floating and
meet the requirements of protection class II.
4(2) A~
2
H05VV-F3G 0.75 mm
or
2
H05RN-F3G 0.75 mm
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