System Layout - Viessmann VITODENS 222-F Technical Data Manual

Installation Examples

System Layout 1

Vitodens 222-F, B2TA with a direct-connected heating circuit with integrated DHW production
Legend
A Vitodens 222-F B2TA boiler with
Vitotronic 200, HO1B outdoor reset control
B Outdoor temperature sensor !
C Vitotrol remote (optional)
D Heating circuit
E Boiler pump
20
F DHW circulating pump sA
G DHW storage tank
H Integral expansion tank
I DCW inlet
J DHW outlet
K Temperature and pressure relief valve outlet
L Pressure relief valve outlet
24
Vitodens 222-F, B2TA 19 and 35 Technical Data
Installation of ...
radiator heating circuit (high-temp. circuit)
■
DHW production
■
... with the following flow conditions:
The flow rate of the heating circuit is less than the
maximum possible water flow rate of the Vitodens
222-F B2TA boiler (see page 28 for maximum water
flow rate of boiler).
The use of a low-loss header is strongly recommended
if the maximum water flow rate in the application
concerned exceeds the values shown in the applicable
table on page 28, or if the system flow rates are
unknown.
The low-loss header is available as accessory part.
See following pages for installation examples with a
low-loss header.