14
ENG
“gaSteam HARDWARE” +030220940 -rel. 1.6 - 06.12.2013
4. STEAM DISTRIBUTION
To achieve optimal humidifi er effi
ciency, the steam produced must be
introduced into the room uniformly, in order to prevent the spraying
of drops and notable condensation. This is best achieved using steam
blowers or linear distributors. The right steam distributor must be chosen
according to the place where the steam is to be introduced.
4.1 Steam distribution in ducts - linear
distributors
For steam distribution into air ducts, the steam distributor must be sized
according to the output of the humidifi er and the cross-section of the
ducting. Figure 4.a provides the dimensions of the CAREL linear steel
distributors. Table 4.a specifi es the minimum number and the model of
the distributors recommended for the type of humidifi er used.
Humidifi er fi tting dia. mm
2x40
2x40
4x40
Humidifi er capacity kg/h (lbs/h)
45 (100)
90 (200)
180 (400)
Distr
ibut
or f
itting
M
ax. distr
ibut
or
capacit
y k
g/h
Length
mm
C
ode
UG045
UG090
UG180
40
25
834
DP085D40R0
2
40
35
1015
DP105D40R0
2
(4)**
40
45
1222
DP125D40R0
2
2
4
40
45
1636
DP165D40R0
2
2
4
40
45
2025
DP205D40R0
2
2
4
Tab. 4.a
**: 40x40x40 “Y” kit for branching the steam hose available from 01/01/2005.
N
.
B
.:
if the duct is not wide enough for the distributor, two shorter
distributors can be used (numbers in brackets), by branching off the
steam hose.
A
ssembly of the linear distributors (see
F
ig. 4.a):
• make a series of holes in the wall of the duct according to the drilling
template indicated in Fig. 4.a;
• insert the distributor with the steam holes facing upwards;
• fasten the fl ange of the distributor using 4 screws. i.
dimensions mm:
Ø
A
Ø
B
Ø
Y
Ø
X
40
10
89
60
99
To allow the return of condensate using the drain connection (see
Installation of the condensate drain pipe), mount the distributor (Fig.
4.a) with the inlet connection closer than the closed end, which, for this
reason, must be adequately supported (the support surface already has
the right slope).
1
steam inlet
2
condensate drain
3
fl ange gasket
4
fasten the support where required
5
max. screw diameter “M5”
6
L (see Table 4.a)
7
hole on the wall
8
use the fastening support supplied so as to ensure the slope determined
by the shape of the fl ange
Tab. 4.b
70 mm
min. 200 mm
1
1/3 H
H > 250 mm
2
1/3 H
200 mm
H > 250 mm
3
1/5 H
2/5 H
200 mm
H > 350 mm
4
1/5 H
2/5 H
H > 400 mm
5
1/7 H
2/7 H
2/7 H
H > 600 mm
7
1/7 H
2/7 H
2/7 H
H > 500 mm
6
8
min 200 mm
=
=
9
H > 200 mm
=
=
1/2 H
10
H > 300 mm
=
=
=
=
11
H > 500 mm
=
1/3 H
1/3 H
=
F
ig. 4.a - assembly distributor
As allowed by the dimensions of the air duct, the distributor must be
as long as possible and located away from curves, branches, changes in
cross-section, grills, fi lters and fans.
The minimum recommended distance between the steam distributor
and the nearest obstacle is around 1-1.5 metres, yet this greatly depends
on the operating conditions; this distance it in fact increases with:
• an increase in the air speed in the duct;
• an increase in the relative humidity of the air before and, above all, after
humidifi cation;
• a decrease in turbulence.
Follow the indications and the distances between the distributor and the
walls of the ducting and/or between two distributors, as indicated in the
fi gures below (distances in mm).
F
ig. 4.b
4.2 Positioning the linear distributors in the air ducts
