Nortec El Steam Humidifier, Steam Cylinder B (Large Units Only) - Nortec EL005 Installation Manual

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).
Steam Cylinder
To Current Sensor
To Level Sensor
QC1
Steam Cylinder
Wire Colors:
R Red
Y Yellow
B Black
BL Blue
BR Brown
GY Grey
G Green
O Orange
Figure 25: 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)
Nortec EL
Main Contactors
CYLINDER-B
K1
R
Y
B
R
B
Y
Y Y
To Level Sensor
B
R QC2
R
To Connector
B
X4
Broken lines 3-phase
Main
6-wire unit
Contactor
K1
B B
B
R
R
Y
Y Y
B
B
R
R
Y
X6 X4
L1SW L1SW NSW L1SC NSW
SPARE/DRAIN CONTACT.
DRAIN SPARE
COMM
PWR IC
24V
SPARE1 SPARE2 T1
1
2582302_C_EN_1611
Primary
Fuse
Option
X2
X5
L1SC NSW L1FU N L1SW
INLET SWITCH
CONT. INLET
SC OK
F1 1AT
DRIVER
BOARD B
RS4851 RS4852
GND GND D+ D- GND D+ D-
X13 X14 X15
1 1
G Y GY
A Connects to Module A (Terminal Block X0)
Cylinder with Three Phase Dual Contactor
Cylinder with Three Phase Single Contactor
A Connects to Module A (Terminal Block X0)
2A
R
slow blow
O O
O O
110-120 VAC
Blower Pack Power Supply
(for 208-600 V Space and RMBP units)
B
GND
BL
R
B
GND
Y
24Vac
BL
R
R
R
R
B
R
Y
R
R
B
B
Y
R
Y
B
R
R
C
Connects to Terminal X15 in Driver Board A
L N L N
R R R G
R
Connects to
Terminal X1
in Driver Board A
N.O. Blower Pack
Air Proving switch
R R
9
BP Loop
+
8
GND
7
6 10 VDC
CH 2
5
4 CH 1
GND
3
2
Sec. Loop
1
24 VAC
Installation
43