Specifications

7
All wiring must be in accordance with all governing
codes, and with the HUMIDI-TECH
®
or HUMIDI-
TECH DI wiring diagram. The diagram is located
inside the removable subpanel cover on the right-
hand side of the humidifier cabinet. Power supply
wiring must be rated for 105 °C.
WIRING
Figure 7-1: Field wiring requirements
Note: Control wiring and power wiring must be run in dedicated
or separate earthed metal conduit, cable trays or trunking.
Grounding requirements:
The earth must be made by solid metal to metal connections.
The ground must be a good radio frequency earth. Ground wire
should be same size as power wiring.
OM-1007
Fused
disconnect, sized
per tables below.
Power
supply
cable, sized
per tables
below.
0.6 m to 1.9 m
1.7 m
preferred
(Provided by
installer)
Figure 7-2: Shielded/screened cable drain wire
connection to lug
Note: For maximum E.M.C. effectiveness, all humidity,
temperature, and airflow controls should be wired using multi-
colored shielded/screened plenum-rated cable with a drain
wire for the shield/screen. The drain wire should be
connected to the shield/screen ground terminal with its length
kept to less than 50 mm.
Shield/screen ground lug
Microprocessor
board
Right side view
of electrical
panel
lug-o&m
Table 7-3: Fuse/
breaker requirements
Note: The use
of semiconductor
fusing is
recommended
with the use of
the SSR option.
I max. A
Breaker
size amps
0 - 8 10
8.1 - 10.4 13
10.5 - 12.8 16
12.9 - 16 20
16.1 - 20 25
20.1 - 25.6 32
25.7 - 32 40
32.1 - 40 50
40.1 - 50.4 63
50.5 - 64 80
64.1 - 80 100
80.1 - 100 125
100.1 - 128 160
128.1 - 160 200
Table 7-1: 230 Volt
single phase
A
Wire
size
mm2
Ground
wire size
mm2
0 - 18 2.5 2.5
18.1 - 24 4 4
24.1 - 30.7 6 6
30.8 - 42.7 10 10
42.8 - 57 16 16
57.1 - 75.7 25 16
75.8 - 93.7 35 16
93.8 - 113.2 50 25
113.3 - 144 70 35
144.1 - 174 95 50
174.1 - 201.7 120 70
Table 7-2: 400 Volt
three phase
A
Wire
size
mm2
Ground
wire size
mm2
0 - 15.7 2.5 2.5
15.8 - 21 4 4
21.1 - 27 6 6
27.1 - 37.5 10 10
37.6 - 51 16 16
51.1 - 66.7 25 16
66.8 - 82.5 35 16
82.6 - 100.5 50 25
100.6 - 128.2 70 35
128.3 - 155.2 95 50
155.3 - 179.2 120 70
Refer to the amp draw on the rating plate, and use
the following tables to determine the appropriate
wire, conduit and fused disconnect requirements.
When selecting a space to install the HUMIDI-TECH,
avoid areas close to sources of electromagnetic
emissions such as power distribution transformers.
VM99-C-0400-M-0801.pdf 7 11/19/2009 9:51:54 AM