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INSTALLATION
2.8 Draining the condensate
RTC condensing boilers produce a ow of condensate that varies
according to operating conditions.
The maximum hourly production of condensate for each model is
given in the table in the paragraph Neutralising the condensate.
The condensate drain system must be suitably dimensioned to
cope with the ow produced. Also, pipe and hose diameter must
not be less than 1 1/4" at any point. This diameter corresponds to
that of the boiler’s condensate drain tting (7).
Collection and connection to the drain system must conform to
applicable national and local legislation.
To prevent combustion fumes from leaking into the air of the boil-
er room, the condensate drain pipe must incorporate a siphon
creating a minimum head equivalent to the furnace pressure plus
1" W.C..
The connecting pipes between the boiler, siphon and waste water
drain pit must be laid at a minimum down slope of 3° and must
be installed in such a way as to prevent any build-up of conden-
sate.
≥3°
≥3°
7
2.9 Neutralising the condensate
Installation of a condensate neutralisation kit is always recom-
mended. The following table states the rate of condensate ow
produced by the boiler.
Model
Condensate
Production
Condensate
Production
RTC 3000 21 GPH 78 l/h
RTC 4000 30 GPH 112.8 l/h
RTC 5000 37 GPH 139.2 l/h
RTC 6000 46 GPH 175 l/h
RTC 8000 54 GPH 203.2 l/h
RTC 10000 68 GPH 256 l/h
At full load with Tin=86°F and Tout=122°F
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All connecting hoses must be kept as straight and as short as
possible. Any curves or sharp bends can lead to the hoses be-
coming clogged and can therefore prevent proper condensate
discharge.
9
Refer to the manual supplied with the kit for installation and
connection instructions.
9
NOTICE: The boiler room’s condensate drain pit must be locat-
ed at a lower level than the tting on the neutralization unit.
If it ever proves necessary to neutralize the condensate that forms
in the ue gas stack, connect the condensate drain ttings of the
boiler and ue gas stack together using a ‘T’ union and connect
the leg of the ‘T’ to the inlet of the neutralization unit.
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