System Layout 5 - Viessmann AirflowPLUS AH2A-213 Installation, Service And Operating Instruction

Viessmann AirflowPLUS AH2A Installation, Operating and Service

System Layout 5

Legend
A Vitodens 100 WB1B boiler
B System fill with expansion tank
C Viessmann AirflowPLUS air handler
D Thermostat (field supplied)
E Switching relay heating and DHW control (field supplied)
F Indirect fired DHW storage tank
G Closely spaced tees (optional LLH accessory)
Refer to page 22 for the Viessmann AirflowPLUS
connected in parallel with heating circuit demand to
'RT' connection.
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.
If the heating system does not include a DHW storage
tank connected to the boiler the DHW demand contacts
of the boiler may be connected to the Viessmann
AirflowPLUS heat demand, use the DHW temperature
set point to set the desired supply temperature to the air
handler.
Additional Information
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