Riello Array AR 1500 - Page 11

11
INSTALLATION
2.10 Condensate drain and piping
The Array Boiler is designed to condense water vapor from the ue
products. Each module of the boiler is equipped with a conden-
sate trap (see Fig. 11), while a syphon collects the condensate of
the vertical ue manifold.
Fill the syphon with
water from the top
of the vertical flue
manifold BEFORE
to connect
the vent piping
Vertical Flue
Manifold
Syphon
Condensate
Trap
Condensate
Trap
Condensate
Trap
Fig. 11 Condensate Drain System
9
WARNING: At the Start-up and after prolonged shutdown of
the boiler, the condensate traps and the syphon must be lled
with water prior to restart it, otherwise combustion gases will
enter the room with a risk of an excessive level of carbon
monoxide.
The procedure for lling the traps and syphon with water is shown
on the Fig. 12:
Vertical Flue
Manifold
Syphon
Disconnect the
condensate pipe
Fill the trap
with water
Fill the syphon
with water from
the top of the
vertical flue
manifold
BEFORE to
connect the
vent piping
Fig. 12 Water Filling of Condensate System
− The installation must have provisions for suitable drainage
or collection of the condensate out of the boiler traps.
− The condensate water shall be discharged at atmospher-
ic pressure, by dripping into a suitable drain, and shall be
neutralized prior to draining per local codes.
− The condensate drain tube must pitch away from the boiler
(1/4” slope per foot) and must never reduce its diameter
downstream.
− Never use copper pipes or of other material not intended
for the specic purpose, because the action of condensate
will cause a rapid deterioration.
− Check that the condensate drain pipe is adequately sloping
towards the discharge point avoiding high points, which can
inhibit the ow of condensate. The condensate pipe must be
installed in such a way so as to avoid the freezing of the liquid.
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WARNING: Verify condensate disposal / neutralization is in ac-
cordance with local, state and federal regulations.
If a oor drain is not available, a condensate pump can be used to
remove the condensate to drain. The maximum condensate ow
rate is 7.9 GPH for Array AR 1000, 13.9 GPH for Array AR 1500 and
15.9 GPH for Array AR 2000. The drain line must be removable for
routine maintenance.
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CAUTION: Use PVC, CPVC, stainless steel, aluminum or polypro-
pylene for condensate drain piping (Fig. 12). DO NOT use carbon
or copper components.
Condensate
Drain
Relief Valves
Manifold
Fig. 13 Condensate Drain and Relief Valves Manifold Locations