Installation instructions
19
To allow the correct functioning of the salinity control unit (TDS)
and of the automatic drain unit (Blow Down), it is necessary to
feed them with filtered and dried compressed at a 4-6 bar pres
-
sure.
In the absence of these requirements, the units may not operate
correctly.
The compressor and the tank must be positioned at a safe dis-
tance from the thermal unit, away from sources of heat.
3.7 - HYDRAULIC CONNECTIONS
ATTENTION!
Before connecting the boiler to the system,
thoroughly wash the pipes with a strong jet of
steam, in order to eliminate metallic residue
from processing and welding, oil and grease
which could be present and which, reaching
the boiler, could alter its functioning.
The steam generators, once positioned in the boiler room, must
be connected to the following points:
- Steam outlet (
T1
)
- Safety valve drain (
T2
)
- Water supply (
T3
)
- Boiler drain (
T4
)
The sizes of the pipes for each boiler model are given in para
-
graph 2.3 - DIMENSIONS.
3.8 - PNEUMATIC CONNECTION
(
only for versions equipped with TDS,
automatic drain and water flow rate
modulation valve)
Ensure that the hydraulic piping is not used
as earth sockets of the electric system or
telephone lines. They are absolutely not
suitable for this use as serious damage to
the water pipes may be caused.
To ensure a good tightness of the water con-
nectins:
- Thoroughly clean contact surfaces.
- Lubricate threaded clamping elements (do
not contaminate the seal and / or flange)
Before installing the seal ensure that the flanges are well
positioned and that the faces in contact are parallel
Ensure that the gasket is centered correctly.
Do not use adhesive tapes/double sided tapes/glues to in-
stall the seal; these compromise the efficiency of the same
seal.
To attain the right torque (5-10 Nm), with a correct com-
pression of the seal, it is very important to tighten the
nuts in a cross-diagram using appropriate torque wren-
ches.
The torque must be carried out in 5 steps:
- 1. Tighten the nuts by hand
- 2. Tighten up to 30% of the recommended end torque
and check that the flange adheres evenly to the seal.
- 3. Tighten up to 60%
- 4. Tighten to the recommended torque
- 5. Tighten to the end torque for adjacent nuts to verify
the correct torque.
If necessary repeat these steps more than once until you
attain the final torque.
Repeat these steps after 50 hours of plant operation.
Carry out the connection of the steam line
of use to the valve, making sure that the
thermal expansions do not cause stresses
on the same.
The drain of the safety valves must be con-
veyed to outside the boiler room made in
such a way so as not to cause damage to
people or property in case of steam dis-
charge.
The piping diameter must not be smaller than the diameter of
the safety valve drain.
To avoid stagnation of condensation, the drain pipe must be po-
sitioned with adequate slope so as to allow its complete drain-
age.
The pipes arriving to the appliance must be
supported and arranged so as not to cre-
ate dangerous efforts for the stability of the
connections themselves.
