29
Outside temperature sensor
!
For fitting the wireless outside temperature sensor
(wireless accessory):
Wireless base station installation and service
instructions
Fitting location for outside temperature sensor
■
North or north-western wall, 2 to 2.5 m above ground
level; in multi storey buildings, in the upper half of the
second floor
■
Not above windows, doors or vents
■
Not immediately below balconies or gutters
■
Never render over
Outside temperature sensor connection
2-core lead, length max. 35 m with a cross-section of
1.5 mm
2
External demand via switching contact
Connection options:
■
EA1 extension (accessories, see separate installa-
tion instructions).
■
Plug
lH
.
When the contact is closed, the secondary circuit flow
temperature is heated to the set flow temperature
(coding address "9b" in the
"General"
group). The
secondary circuit flow temperature is limited by this set
flow temperature and the electronic maximum limit
(coding address "06" in the
"Boiler"
group).
!
Please note
Live contacts lead to short circuits or phase fail-
ure.
The external connection
must be potential-free
and meet the requirements of protection class II.
Plug
lH
EA1 extension
Connection
A
lH
N
?
1 L
A
Floating contact (when connecting, remove jumper
between L and 1)
B
[{S
DE
[{D
DE
[{A
DE
A
A
Floating contact
B
EA1 extension
Codes
■
"4b:1" in the
"General"
group
■
Effect of the function on the relevant heating circuit
group:
Coding address "d7" in the
"Heating circuit"
group
■
Effect of the function on the circulation pump for cylin-
der heating:
Coding address "5F" in the
"DHW"
group
■
Set "3A" (DE1), "3b" (DE2) or "3C" (DE3) to 2 in the
"General"
group.
■
Effect of the function on the relevant heating circuit
group:
Coding address "d7" in the
"Heating circuit"
group
■
Effect of the function on the circulation pump for cylin-
der heating:
Coding address "5F" in the
"DHW"
group
External demand via 0
–
10 V input
Connection at 0
–
10 V input at
EA1 extension
.
Installation sequence
Electrical connections
(cont.)
5678 044 GB
Installation
Summary of Contents for D2RA
Page 113: ...113 Maintenance Checking the Vitotronic 200 H accessories cont 5678 044 GB Maintenance ...
Page 133: ...133 Parts lists Sorption module hydraulics cont 5678 044 GB Components ...
Page 136: ...136 0001 0002 0003 0004 0005 Fig 83 Parts lists Miscellaneous 5678 044 GB Components ...
Page 163: ...163 5678 044 GB ...
