50
Installation
2582302_C_EN_1611
Nortec EL
5.8.3.8 Dual Steam Cylinders Control Wiring
The dual steam cylinders in the large model Nortec EL steam humidifier can be configured to operate
in series, in parallel, or independently – by setting Dual Cylinder Mode in the controls software.
Refer
to the Operation and Maintenance Manual.
In series or parallel mode, all the control signals are wired to low voltage terminal strip A. Connections
are made to terminal strip A in the same way as for a single cylinder unit. In addition, a jumper wire must
be installed between the terminal points "2" in the low voltage terminal strips A and B. Refer to
Figure 32
.
The independent mode is used to control humidity in two separate zones, each with its own separate
set of control signals. Connections are made as shown for single cylinder units but with independent
connections to each terminal strip. All the control signals from Zone A are connected to low voltage ter
-
minal strip A, and signals from Zone B are connected to low voltage terminal strip B. Refer to
Figure 33
.
Figure 32:
External
1
2
1
2
3
Inputs
LV
LV
8
7
6
5
4
3
2
9
1
8
7
6
5
4
3
2
9
1
Dual Steam Cylinders Control Wiring, Series/Parallel Mode
1 Low voltage terminal strip A
2 Low voltage terminal strip B
3 Jumper wire (for parallel or series mode only)
Figure 33:
External
1
2
1
2
Inputs - Zone A
Inputs - Zone B
LV
LV
8
7
6
5
4
3
2
9
1
8
7
6
5
4
3
2
9
1
Dual Steam Cylinders Control Wiring, Independent Mode
1 Low voltage terminal strip A, Zone A
2 Low voltage terminal strip B, Zone B