Viessmann vitodens Technical Manual page 84

3.2 Installation examples
System design 12
300
Installation example Vitodens 300 (from 49 kW)
System design 12
Vitodens 300 (from 49 kW) with/without DHW heating with one heating circuit without mixer
K
H
G
F
3
A Vitodens 300 (from 49 kW)
B Outside temperature sensor (only for
weather-compensated control units)
C Vitotrol 100 for constant temperature
mode
or
Vitotrol 200 or 300 for
weather-compensated mode
Required equipment
Item Description
A Vitodens 300 (from 49 kW)
C for constant temperature mode:
Vitotrol 100, type UTA
or
Vitotrol 100, type UTD
for weather-compensated mode:
Vitotrol 200
or
Vitotrol 300
E Heating circuit pump (observe the pump diagram on page 68), variable speed
F Cylinder loading pump
G Cylinder temperature sensor
H DHW cylinder
K Internal extension H 1 (system without DHW circulation; optional connection of an external
safety valve for LPG)
or
internal extension H 2 (system without DHW circulation; optional connection of an interlock for
extraction equipment)
or
external extension H 1 (system with DHW circulation)
84
D
B C
A
E
D Heating circuit
E Heating circuit pump (accessory)
F Cylinder loading pump (accessory)
G Cylinder temperature sensor
(accessory)
H DHW cylinder
K Internal extension H 1 or H 2
or
external extension H 1
Note
3
For a volume flow of < 0.3 m /h or
3
> 3.5 m /h, install a low loss header
(see specification).
Number Part no.
1 as per price list
1 7170 149
1 7179 059
1 7450 017
1 7179 060
1 7178 820
1 7339 468
1 7173 114
1 as per price list
1 7159 057
1 7179 144
1 7179 058
VITODENS