Circulation Pump At Plug Sa; External Demand Via Switching Contact - Viessmann VITODENS 200-W Installation And Service Instructions Manual

Installation sequence
Electrical connections
Circulation pump at plug
M
A
1~
L N
?
sA
Fig.14
Circulation pump
A

External demand via switching contact

Connection options:
Extension EA1 (accessory, see separate installation
■
instructions).
■ Plug lH .
Plug
lH
A
1 L N
?
lH
A Floating contact
When making this connection, remove jumper
between 1 and L.
Burner operation is load-dependent if the contact is closed. The boiler water is heated to the value set in coding
address "9b" in group "General"/"1". The boiler water temperature is limited by this set value and the electronic
maximum limit (coding address "06" in group "Boiler"/"2").
Codes
Plug
lH
"4b:1" in group "General"/"1"
Select effect of the function on the relevant heating circuit pump in coding address "d7" in group "Heating cir-
■
cuit"/"5".
Select effect of the function on the circulation pump for cylinder heating in coding address "5F" in group
■
"DHW"/"3".
20
(cont.)
sA
EA1 extension
A
A
B
EA1 extension
Set "3A" (DE1), "3b" (DE2) or "3C" (DE3) in group "General"/"1" to 2.
Rated current
Rated voltage
Set function of connected component in coding
address "39"
Function
DHW circulation pump
Heating circuit pump for heating circuit
without mixer A1
Circulation pump for cylinder heating
(delivered condition)
Connection
!
Please note
'Live' contacts lead to short circuits or phase fail-
ure.
The external connection must be potential-
free.
B
[{A [{S [{D
DE DE DE
Floating contact
EA1 extension
2(1) A~
230 V~
Code
39:0
39:1
39:2