Technical data

54
CTC EcoZenith i250
Installation
Circulation pump, radiator system (G1) (G2)
The circulation pump is fitted on the boiler’s primary flow and must be
connected electrically from the boiler, see chapter on Electrical installation.
Mixing valve DHW (65)
Install a mixing valve for the hot tap water in order to avoid the risk of
scalding.
Safety valve DHW (93)
Fit the enclosed valve to the incoming cold water connection. Connect the
waste pipe to the waste system directly to the floor gully or, if the distance is
more than two metres, to a funnel. The waste pipe must slope towards the
waste system, be installed frost-free and left open to the atmosphere/without
pressure.
Non-return valve (48)
Fit the non-return valve to the incoming cold water connection.
Shut-off valve (94)
It is important to fit a shut-off valve (94) to both the primary and return flows.
Boiler safety valve (92)
The boiler’s safety valve (2.5 bar) is fitted in the factory on the left side of the
top. Connect the waste pipe to the waste system directly to the floor gully
or, if the distance is more than two metres, to a funnel. The waste pipe must
slope towards the waste system, be installed frost-free and left open to the
atmosphere/without pressure.
Filling valve for radiator system (90)
Fit a filling valve between the cold water connection and the radiator return
pipe, or between the cold water pipe and the expansion pipe. Observe the
building regulations of the Swedish National Board of Housing, Building and
Planning (Boverket) and the standard SS-EN 1717.
Manometer system pressure (95)
Fit the manometer on the expansion pipe or radiator return pipe.
!
NB: The waste pipe
must be fitted to the
waste system.
!
NB: It is important to
fit a shut-off valve (94)
to both the primary
and return flows.