Gas fired wall mounted boiler Balanced flue opera-
tion
Open fl ue operation
Required draught Pa — 1.5
coaxial parallel
Flue o utlet Ø mm 60 / 80 80 140/150
Ventilation air inlet Ø mm 100 / 125 80
Note
If the gas supply pressure is higher than the maximum permitted value, install a separate gas governor upstream of the system.
Balanced flue operation
A Area for electrical supply cables
EDrain
GA Gas connecti on
HR Heating return
HV Heating flow
KW Cold water
WW DHW
Note
For dimensi ons of on-site pipe connections, see from page 10
5822 335-1 GB
VITOPEND 222 VIESMANN 5
Specification - Vitopend 222 (cont.)
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