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6.6 Condensate Trap
Grant VORTEX Eco boilers are supplied
with a factory-fitted condensate trap to
provide the required 75 mm water seal
in the condensate discharge pipe from
the boiler.
This trap incorporates a float (which will
create a seal when the trap is empty)
and an overflow warning outlet (fitted
with a plastic sealing cap), see Figure
6-2.
The trap is factory-fitted inside the boiler
casing, mounted in the rear of the boiler
(opposite end to the burner) on the
inside of the side panel, see Figure 6-2.
A flexible hose connects the outlet of
the condensing heat exchanger to the
trap inlet. Ensure the straight connector
on the hose is fully pushed onto the ‘top
hat’ inlet connector of the trap.
With the trap fitted inside the boiler
casing, the sealing cap must be fitted.
If connecting the condensate discharge
(either internally or externally) into a
waste system or soil stack - the sealing
cap must be fitted in the trap outlet.
On external discharge systems to a
hopper, gully or soakaway, the sealing
cap should be removed from the trap
outlet.
If there is any discharge of condensate
from the overflow outlet, this could
indicate a blockage (possibly due
to freezing). Turn off the boiler and
investigate the cause. If necessary
contact your service engineer for
assistance.
The condensate trap outlet is at an
angle of 48° below the horizontal. This
is to automatically give a 3° fall on any
‘horizontal’ runs of condensate disposal
pipe. Refer to Figure 6-2.
!
NOTE
Access must be available to allow
for routine maintenance.
Figure 6-2: Condensate trap (rear panel removed)
6.7 Condensate Disposal
Pipework
The outlet of the trap will accept 21.5
mm to 23 mm OD Polypropylene
overflow pipe for the condensate
discharge pipe.
Possible routes for disposal
pipework
The boiler enclosure has several 50 mm
diameter openings in both the sides
and base. These are designed to allow
pipework to pass through, to suit the
installation. These openings can be
used to allow the condensate disposal
pipe to exit the casing in one of the
following ways:
Side outlet – The lower opening on
either side of the enclosure can allow
the condensate disposal pipe to be
installed as follows:
• Connection to an internal stack –
passing back through the wall of
the house.
• Connection to an external soil
stack adjacent to the boiler.
• Discharge into an adjacent
(external) drain or gulley.
• Discharge into a soakaway – with
pipe either above or below ground
level.
Bottom outlet – There are three
openings in the base that can allow
the condensate disposal pipe to be
installed as follows:
• Discharge into a drain or gulley
beneath the boiler (e.g. drain built
in to the concrete base for the
boiler).
• Discharge into a soakaway – with
pipe below ground level.
When connecting plastic discharge
pipe, ensure that the pipe is fully
pushed into the outlet end on
the flexible pipe to prevent the
possibility of leakage.
6.8 Inspection and Cleaning of
Trap
The trap must be checked at regular
intervals (e.g. on every annual service)
and cleaned as necessary to ensure
that it is clear and able to operate.
The bottom bowl is sealed to the
trap body and cannot be removed.
To inspect and clean the trap:
1. Disconnect flexible condensate
hose from inlet connector.
2. Unscrew the inlet connection nut.
3. Remove the inlet connector and
nut from trap.
4. Remove trap from bracket.
5. Remove float from trap – clean if
necessary.
6. Inspect inside of trap and clean as
necessary.
7. Re-assemble trap, re-fit to boiler
and re-connect flexible hose.
Ensure that hose is fully pushed
onto the trap inlet connector.
!
CAUTION
Failure to regularly check and clean
the condensate trap may result in
damage to the boiler and will not be
covered by the guarantee.
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