Herrtronic
®
RDU-D Supplement
I n s t a l l a t i o n , O p e r a t i o n , & M a i n t e n a n c e M a n u a l
7
www.herrmidifier-hvac.com
Figure 11 - MDD Remote Mount
VI. RDU OPERATION
Upon starting the Herrtronic unit, the RDU fan will be
energized. If airflow is not sensed within ten seconds, the
Herrtronic unit will shutdown and a fault will be registered.
Depress ‘”Fault” button to confirm fault condition and clear
fault by pressing “Enter” and then “Back” button to return
to Menu 1.
Once operating, the fan speed can be adjusted continuously
from 1—5 (slow—fast) by turning the fan speed control
knob. Refer to the chart below for the optimum fan speed
setting for your application.
When the Herrtronic unit is turned “off”, either by switch
or controller, the RDU fan will continue to operate for 15
minutes to prevent the formation of condensate inside the
cabinet. The steam plume direction can be controlled both
horizontally and vertically by adjusting the louvers on the
air discharge grille.Louvers adjusted as shown in Figure
12 produce the most consistent and shortest evaporation
distance.
Figure 12 - Louver Details
Figure 11 - MDD Remote Mount
HERRTRONIC MD
STEAM INLET UNION
(REMOTE MOUNT)
STEAM HOSE
DRAIN
LINE
BLOWER
OPTIMUM LOUVER
DIRECTION, DOWN 30°
Figure 14 - Optimum Louver Placement
Figure 13 - Steam Plume Characteristics
! WARNING!
To avoid potential contact with steam, be certain to shut off the Herrtronic unit BEFORE
adjusting the louvers.
STEAM PLUME (@75° F, 55% R.H.)
Output
lbs./Hr
Throw (in.)
Blower Speed (CFM)
Breadth (in.)
Blower Speed (CFM)
Rise (in.)
Blower Speed (CFM)
1
(210)
2
(240)
3
(280)
4
(320)
5
(365)
1
(210)
2
(240)
3
(280)
4
(320)
5
(365)
1
(210)
2
(240)
3
(280)
4
(320)
5
(365)
10
20
15
15
15
20
50
35
30
35
35
20
20
18
18
18
30
90
80
75
70
60
28
26
24
24
24
10
40
98
92
90
94
100
36
36
36
32
26
18
12
6
50
112
112
116
120
120
40
36
36
36
30
36
22
12
6
60
120
126
130
134
36
34
28
28
58
30
14
6
70
126
132
138
42
40
36
36
20
12
80
130
138
156
48
42
40
52
24
16
90
136
144
156
58
52
46
72
36
20
100
126
138
156
60
60
48
120
50
25