TAGLIAVINI ROTOR RT 68, User Manual

Page: 20 / 124

Pag. 20
Maintenance and use manual
COMBUSTION ROTOR 2018 Ver. 1.1 from 24/06/18
Make sure that discharge course wideness (curves, variations in cross section and slope etc. ) are reduced to
a minimum. Take care to ensure furnace connection to the chimney base has an upward trend with a minimum
5 % slope, and proper insulation in order to avoid damaging condensate, noise and excessive temperature.
The pipes must be made out of stainless steel and suitably insulated to avoid harmful condensate, noise and
excessive temperature.
For whatever else not specified, follow the laws regulation. The pipe's diameter will have to remain constant
throughout its length, its dimensions being larger or equal to the aspirator's exit diameter, a minimum vacuum
of 15Pa ( 0.17 mbar, 1.7 mm H
2
O) must be ensured at the base of the pipe.
For horizontal tube sections smaller than 2 meters insert a cup with condensate drain at the base of the vertical
pipe. For horizontal tube sections larger than 2 meters insert after about 1 meter from the aspirator a cup for
the condensate drain (see drawing).
The chimney must rise over the roof top at least two meters and be provided with an adequate chimney upwind.
Mixing oven exhaust pipe vapours with fumes from other furnace or combustion equipment is not recommended;
it could create highly noxious gas apart from and also compromise the chimney draft.
3.5 Steam discharge
3.3 Overflow drain
Serves as a discharge for non vaporized water. The pipework must be made out of seamless galvanised
iron, 60 mm diameter, placed flush with the floor as indicated in the connection plans. Keep in mind that the
water discharged from vaporisers has a high temperature (80-90 °C) and in the case of steam generators, the
discharged water/steam can even reach 120 °C.
The condensate drain pipe should not: have bottlenecks or reductions in diameter, have slopes less than 4 °,
have an excessive length (greater than 2m). A siphon drain should be mounted at the tube's point of insertion
into the sewer, to prevent the ascent of malodorous vapours.
N.B. : for a vaporiser and water system longer operating life, the use of water with a total hardness below twelve
French degrees 12° F - 6.5° dH (German degrees ) or 8.4° Ck (Clark degrees) is recommended. Using water
softeners with ion-exchange resins temporary removes water hardness, but at the same time lowers PH. PH
values lower than 7 indicate the acidic water therefore a corrosive water. Water acidity can be neutralised by
polyphosphates that can be added using a suitable dispensing unit. We recommend in any case always to
analyse the water using specialized personnel in order to avoid serious damage to oven parts and water system.
ATTENTION : in order to rule out any possible contact with the vapour aspirator moving parts, the
aspirator feeding must be provided with a rigidly fixed and impact resistant pipe with minimum
length of 800 mm
3.4 Fume exhaust
You will have to intall a square box outside or inside the premises approximately 400 mm wide on the side,
equipped with a hatch for inspection and cleaning and with a pipe (G
1
/
2
for condensation drainage, positioned
as shown in the drawing, into which the pipe coming from the oven fume exhaust will flow in). A flue will branch
out from here (see § 4.3) which will have to be positioned 2 meters above the roof of the premises or, if a flat
covering is provided overhead, it will have to project at least by as much as the root of its side and be equipped
with suitable coverage (canopy), better if wind-shielded.
A minimum depressurization of 20Pa (0.22 mbar, 2.2 mm H
2
O) will have to be guaranteed at the base of the
flue when it is cold. The design and installation of the exhaust system of the combustion products must be
done by specialized personnel who issue an EC certificate of conformity according to the relevant standards
(UNI 7129-3, EN13384-1 etc ...)