Viessmann B2UA, Инструкция по установке и обслуживанию, Страница: 35 / 200

35
Plug lH Extension EA1
A
lH
N
?
1 L
A Floating contact (when connecting,
remove jumper across L and 1)
B
[{S
DE
[{D
DE
[{A
DE
A
A Floating contact
B Extension EA1
Codes
■ "4b:2" in group "General" / 1
■ Effect of the function on the heating cir-
cuit pump:
Coding address "d6" in group
"Heating
circuit" (only with weather-compensa-
ted control units).
■ Effect of the function on the circulation
pump for cylinder heating (if installed):
Coding address "5E" in group
"DHW"/
3 .
Codes
■ Set "3A" (DE1), "3b" (DE2) or "3C"
(DE3) in group "General" / 1 to 3 or 4.
■ Effect of the function on the heating cir-
cuit pump:
Coding address "d6" in group
"Heating
circuit" (only with weather-compensa-
ted control units).
■ Effect of the function on the circulation
pump for cylinder heating (if installed):
Coding address "5E" in group
"DHW"/
3 .
Power supply for accessories at plug
lH
(230 V~)
Where the boiler is installed in a wet
area, the power supply connection for
accessories must not be made at the
control unit. If the boiler is installed out-
side wet areas, then the power supply
connection for accessories can be made
directly at the control unit. This connec-
tion is switched directly with the ON/OFF
switch of the control unit. If the total system current exceeds 6 A,
connect one or more extensions via an
ON/OFF switch directly to the mains sup-
ply (see next chapter).
Installation sequence
Electrical connections
(cont.)
5773 238 GB
Installation