Connections On The Heating Water Side - Viessmann EVBB-A Installation And Service Instructions Manual

Connections on the heating water side

Connect all pipework with detachable fittings.
■
■ Seal any connections that are not required with red
brass caps.
■ Adjust the temperature controller and high limit
safety cut-out so that the DHW temperature in the
DHW cylinder does not exceed 95 °C.
!
Please note
The internal indirect coil is installed with gas-
kets.
■ Temperatures > 150 °C at the connections will
damage the gaskets.
Maintain a safe distance when soldering and
welding.
■ Realigning the connector will damage the gas-
kets.
Permissible heating water flow temperature
Solar side
■
Heating water side
■
Permissible operating pressure
Solar side
■
Heating water side
■
DHW side
■
Test pressure
Solar side
■
Heating water side
■
DHW side
■
Permissible DHW temperature
Heating DHW with solar collectors
Via the lower indirect coil and heat supply for reheating
or heating the DHW with a boiler via the upper internal
indirect coil (parallel operation)
Installation sequence
160 °C
160 °C
10 bar
1 MPa
10 bar
1 MPa
10 bar
1 MPa
16 bar
1.6 MPa
16 bar
1.6 MPa
16 bar
1.6 MPa
95 °C
17