Power Supply For Accessories At Plug Lh (230 V~) - Viessmann Vitodens 242-F Installation And Service Instructions Manual

Electrical connections
!
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.
Plug
lH
A
1 L
N
?
lH
Floating contact (when connected, remove jumper
A
between L and 1)
Codes
"4b:2" in group "General"/1
■
Effect of the function on the heating circuit pump:
■
Coding address "d6" in group "Heating circuit" (only
for weather-compensated control units)
Effect of the function on the circulation pump for cylin-
■
der heating:
Coding address "5E" in group "DHW"/3
Power supply for accessories at plug
Where the boiler is sited in a wet area, accessories
outside the wet area must not be connected to the
mains at the control unit. If the boiler is sited outside
wet rooms, the power supply for accessories can be
connected at the control unit. This connection is
switched directly with the ON/OFF switch of the control
unit.
(cont.)
(230 V~)
lH
EA1 extension
B
[{A [{S [{D
DE DE DE
A
Floating contact
A
EA1 extension
B
Codes
Set "3A" (DE1), "3b" (DE2) or "3C" (DE3) to 3 or 4 in
■
group "General"/1.
Effect of the function on the heating circuit pump:
■
Coding address "d6" in group "Heating circuit" (only
for weather-compensated control units)
Effect of the function on the circulation pump for cylin-
■
der heating:
Coding address "5E" in group "DHW"/3
If the total system current exceeds 6 A, connect one or
more extensions via an ON/OFF switch directly to the
mains supply (see next chapter).
Installation sequence
31