Central Heating Boiler Connections - Wolf ComfortLine Series Installation And Maintenance Instructions Manual

Central heating boiler connections

Connect the heating flow and return to the
respective boiler fittings. For connections, see
below.
Install a check valve downstream of the boiler
circuit pump(s) to prevent incorrect circulation.
Install a safety assembly comprising
a safety valve with a response pressure
of 3 bar and an automatic air-vent
valve.The pipework between the
boiler and the safety valve must
not be able to be shut off. Severely
excessive boiler pressure due to
excessive boiler temperature, can
burst the boiler body or the boiler
pipework, which would lead to a
sudden excape of hot water (risk of
scalding).
Connect any underfloor heating
system via a three or four-way
mixer.
Sensor well
Boiler flow
Boiler return
Filling / Draining
Central heating boiler connections
2 0
Provide system separation by means
of a heat exchanger, when using
pipes which are not impermeable
to oxygen.
This boiler is only suitable for
Note
heating systems with pumped
heating circuits. If no heating circuit
pump has been installed, sufficient
circulation through the radiators
cannot be ensured, putting the
room heating in question.
Recommendation: Convert open
systems into sealed systems.
Return temperature raising facility
Heating systems with large water
Note
volume (above 20 litres per kW
output) require a return temperature
of 30 °C, as otherwise the longer
heat-up time of such systems would
create condensate and run an
increased risk of boiler body
corrosion.
Connection for venting
and safety flow
Boiler flow
Boiler return