Technical Manual

Technical Data
Legend
IO Inspection and cleanout opening
D Drain
BWR Boiler water return (upper coil)
SCR Solar collector return (lower coil) or
boiler return
BWS Boiler water supply (upper coil)
SCS Solar collector supply (lower coil) or
boiler supply
DCW Domestic cold water
SW1
*1
Sensor well for tank temperature
sensor of boiler control at BWS
level
SW2 Sensor well for the lower
thermometer at SCS level
DHW Domestic hot water
RT Recirculation tapping
TPV Temperature and pressure relief
valve
MA Protective magnesium anode
*1
For solar heating systems Viessmann
recommends placement of the DHW tank
temperature sensor of the solar control in
the solar collector return (SCR). This
requires a brass elbow with sensor well
included in the accessory pack.
The DHW tank temperature sensor of the
boiler control is placed in the SW1 sensor
well (see installation example on page 8).
119 USG / 450 ltr Tank
SCR
SCS
DHW
RT
BWS
a
*1
BWR
d
Section A-B
SW1
SW2
MA
k
h
DCW/D
c
e
b
f
g
Total height
Total width
Total depth
TH
*1
C
6 VITOCELL 100-B
DHW tank temperature sensor
in solar heating applications
119 USG / 450 ltr
DHW tank temperature sensor for solar
application (included with solar control
unit)
Brass elbow with sensor well
(accessory pack)
Solar collector return connection
Storage
capacity
USG /
ltr
119 /
450
a
b
c
d
e
f
g
h
k
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
4 ¼
107
13¾
349
36
3
/
8
924
41
1044
48
3
/
8
1230
56
7
/
8
1444
70 ¼
1784
16
5
/
8
422
4
100
5
2
8
5
6
5
6
-
0
1