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Additional Information
System Layout 6
Legend
A Vitodens 100 WB1B boiler with CombiPLUS
B System fill with expansion tank
C High temperature heating loop
D Viessmann AirflowPLUS air handler
E Thermostat (field supplied)
F Switching relay heating circuit control (field supplied)
G Low loss header (or closely spaced tees)
Refer to page 22 for the Viessmann AirflowPLUS
connected in parallel with heating circuit demand to
'RT' connection.
54
Viessmann AirflowPLUS AH2A Installation, Operating and Service
IMPORTANT
The use of a low-loss header (or closely spaced tees
with a maximum spacing of 4X pipe diameter) is strongly
recommended if the maximum water flow rate in the
application concerned exceeds the maximum or minimum
flow rates of the boiler, or if the system flow rates are
unknown.
The low-loss header is available as accessory part.
Please note location of expansion tank.
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