12
Remeha
Gas 3002 ECO
5.3 Hydraulic circuits with Low Loss Header
5.3.1 Single boiler installation
The boiler is directly weather compensated and the cir-
cuits are also weather compensated. The heating curve
of the boiler is then set approx. 5°C higher than the
highest demanding circuit. Each circuit has its own pump.
The water flow is handled by a boiler pump.
Fig. 05 L.L.H. with boiler pump with a single boiler
installation
5.4 Installation instructions
The following instructions must be adhered to when the
Remeha Gas 3002 ECO is installed:
Gas Safety (Installation and Use) Regulations 1984 (as
amended).
All gas appliances must, by law, be installed by compe-
tent persons (e.g. Corgi) in accordance with the above
regulations. Failure to install appliances correctly could
lead to prosecution.
It is in your own interest and that of safety to ensure that
the law is complied with.
In addition to the above regulations, this appliance must
be installed in compliance with the current I.E.E. Regula-
tions for electrical installation, local building regulations,
the Building Standards (Scotland), Consolidation Regula-
tions, by laws of the local water undertaking and Health
and Safety Document No. 635 'The Electricity at Work
Regulations 1989'. It should also be in accordance with
the relevant recommendations in the current editions of
the following British Standards and Codes of Practice, viz.
BS 5440 Pt 1 and 2, BS 5449, BS 5546, BS 6798, BS
6891 and BG.DM2.
Important:
The Remeha Gas 3002 ECO is a certified appliance and
must not be modified or installed in any way contrary to
these "Installation and Servicing Instructions". Manufac-
turers Instructions must NOT be taken in any
way as overriding statutory obligations.
5.5 Condensate discharge
The condensate produced by the condensing boiler,
which is formed at a return water temperature below
approx. 55˚C, should be discharged to the drain.
Considering the acidity of this condensate (ph 3 to 5),
only hard pvc materials must be used for connecting
piping.
The condensate collector of the secondary heat exchan-
ger has a plastic discharge connection with a pvc pipe
coupling, inside diameter 32 mm, at the end.
The syphon (despatched as a loose item) should be
glued to the pipe coupling with standard pvc glue and to
the supplied 90˚C bend made of pvc. The connection can
be made either to the right or left. The joint between the
syphon and the condensate discharge piping should be
made with a pvc coupling, to facilitate repair jobs.
When using a stainless steel or plastic flue gas discharge
pipe, between this pipe and the flue gas connection of
the boiler, a condensate collector with separate dis-
charge has to be installed
The condensate discharge piping must slope at least
5 mm/m. This piping should freely discharge to the drain
by means of a trap. If possible, this trap should be instal-
5.3.2 Modular boiler installation
Example: 1 x condensing 1 x standard boiler
in modular arrangement with water-side shutdown of the
boiler which is out of operation, by means of a butterfly
valve. The boilers are directly weather compensated.
The heating curve of the boiler is then set approx. 5°C
higher than the highest demanding circuit.
Fig. 06 L.L.H. with boiler pump in a modular boiler
installation
For more information concerning hydraulic diagrams con-
tact our technical sales department.
Please note:
1) If the water resistance of boilers 1 and 2 is not the
same, the boiler with the less resistance should have
a regulating valve.
2) The condensing boiler is always the lead boiler.
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