43
Installation
Nortec EL
2582302_C_EN_1611
5.8.2.2
Nortec EL Steam Humidifier, Steam Cylinder B (Large Units Only)
Figure 25
shows the wiring diagram for large humidifiers with a second steam cylinder (usually referred
to as Cylinder B).
Figure 25:
PE
PE
SC
2
SC
1
N
L1
INLET
SPARE/DRAIN CONTACT.
CONT
. SIGN.
GND
IN
V+
24V
10V
CONT.
DRAIN
INLET
L1FU
L1SW
N
LEVEL
SENS.
MAIN SUPPL
Y
MODULE
B
PE
P1
N
P
LIM. SIGN.
GND
IN
F3 4A
T
SPARE
SWITCH
L1SC NSW
L1SC
NSW
L1SW NSW
L1SW
F1 1AT
COMM
HB OK
JP3
JP1
LEVEL
LOW
24V
GND
CURRENT SENSOR
SC OK
HWS
BLOWER
IN
24V
ON/OFF
IN
24V
SPARE1 SPARE2 T1
Drain
Fill
D+
GND
D-
GND
24V
D+
GND
D-
RS4852
RS4851
PWR IC
1
2
3
4
5
6
7
9
8
SW1
ss
s
ss
s
ss
s
Primary
Fuse
Option
Main Contactors
K1
Main
Contactor
K1
Steam Cylinder
Steam Cylinder
Broken lines 3-phase
6-wire unit
L1
T1
T2
T3
L2
L3
Cylinder with Three Phase Dual Contactor
Cylinder with Three Phase Single Contactor
R
R
R
R
Y
Y
Y
Y
B
B
B
B
B
B
B
B
Y
Y
Y
Y
R
R
R
R
To Level Sensor
QC2
To Level Sensor
QC1
To Current Sensor
1
1
1
1
1
1
1
1
1
1
1
1
1
R
R
Y
B
BL
R
R
QC1
QC2
X13
X14
X15
X8
X9
X1
2
X1
1
X7
X1
X2
X4
X5
X6
To Connector
X4
DRIVER
BOARD B
CYLINDER-B
B
L1
T1
T2
T3
L2
L3
L1
T1
T2
T3
L2
L3
R
R
R
R
R
B
B
Y
R
Y
Y
B
B
R
Y
G
GY
A
Connects to
Terminal X1
in Driver Board A
B
C
Connects to Terminal X15 in Driver Board A
Wire Colors:
R Red
Y
Yellow
B Black
BL Blue
BR Brown
GY Grey
G Green
O Orange
A
Connects to Module A (Terminal Block X0)
Connects to Module A (Terminal Block X0)
BL
GND
GND
24Vac
N.O. Blower Pack
Air Proving switch
R
R
Blower Pack Power Supply
(for
Space and RMBP units)
208-600 V
110-120 VAC
2A
slow blow
R
R
G
O
s
s
O
O
O
N
L
N
L
R R
R
24 VAC
Sec. Loop
GND
CH 1
CH 2
10 VDC
GND
+
BP Loop
Wiring Diagram - Nortec EL Humidifier, Steam Cylinder B (Module B)
F1 Internal fuse, driver board (1A, slow-acting)
F3 Internal fuse, driver board (4A, slow-acting)
K1 Main contactor, supply voltage
LV Low voltage terminal strip B
SW1 Rotary switch, module identification (Module B: 1)