Carel MCmultizone, User Manual

Page: 39 / 52

39
ENG
“MCmultizone” +030221981 - rel. 2.3 - 09.12.2014
cabinet
distribution
maint
enanc
e
13. INSTRUCTIONS FOR INSTALLATION IN ROOMS
13.1 Tips for correct installation
Note : see Chapter 2 for the connection of the atomising heads.
The air line also acts as the support for all the heads. The water line must
always be lower than the atomising heads to ensure emptying and drying
when the installation is off .
Size the water and air lines as shown in the table in paragraph 4.3
13.2 Assembling the atomising head
For each atomising head, a kit for assembly in the room is available that
makes installation simpler and faster. The assembly kit can be used both
for normal water and for aggressive water. The drawing (paragraph 3.2)
illustrates how to fi t the kit.
•
All the atomising heads must be installed at the same height to avoid
variations in pressure that would make the sprays of atomised water
less uniform.
•
The assembly kit allows the head to be turned vertically so as to aim
the spray as desired.
•
A readily accessible ball valve should be installed at the end of each
line for cleaning (bleeding) the lines when fi rst starting and at the start
of each season.
•
The water lines must not have “pockets” along the path so that the
installation can be drained completely by gravity when stopped.
•
Make sure not to reverse the water/air inlets on the atomising heads;
the air inlet is always marked by a label showing “AIR”.
13.3 Positioning the humidity probes
The cabinet control system can be connected to:
•
signal from an external controller.
•
ambient humidity probe.
•
signal from external controller plus limit probe.
•
two humidity probes: ambient plus limit
•
one temperature probe and one limit probe.
If installing humidity and temperature probes:
•
The ambient humidity control probe must be located inside the
return air duct. This sensor can also be positioned in the room being
humidifi ed. Make sure, however, that the place where it is installed is
away from fl ows of air that are hotter or colder than the environment,
or is not in contact with perimeter walls.
•
The temperature probe must follow the same rules as described
above for the humidity probe.
•
The high humidity limit probe should be located downstream of the
atomisation manifold in a position where it cannot be wet by the jet of
atomised water (e.g. after the cooling coil, or after a droplet separator,
or near the fan).
13.4 Important rules to be followed
There are a number of important rules to be observed when installing an
MC humidifi cation system:
1. The jet of atomised water must not come into contact with any
object along its path so as to avoid condensation and thus dripping.
Any obstacles in the trajectory of the jet of water can be avoided by
suitably aiming the atomising heads. Table shows the length and the
maximum diameter of the jet in relation to the humidity in the room.
The heads must also be installed so as to avoid two separate sprays
from overlapping. It is recommended to install them, inside the area
being humidifi ed, as high as possible, without however wetting the
ceiling.
no
Luce/Light
sì/yes
no no
sì/yes sì/yes
head fl ow-rate minimum installation height max spray diameter visible spray distance <50% rH visible spray distance >50% rH
2.7 l/h 4 m 0.75 m 3.00 m 4.55 m
4.0 l/h 4 m 0.75 m 3.35 m 4.90 m
5.4 l/h 4.6 m 0.90 m 3.65 m 5.20 m
6.8 l/h 6.1 m 1.20 m 4.00 m 6.10 m
10.0 l/h 9.4 m 1.50 m 4.60 m 7.00 m