CyberAiR DX Floor Mounted IOM Manual
separate equipment ground lug is provided within
the electrical box for termination of the earth ground
wire.
CAUTION
Prior to unit operation, an adequate unit-to-
earth ground must be connected to the unit.
2.8.1.1 Optional Dual Power
Route the primary and alternate power source wires
to the disconnect switches in the electric box.
Terminate the primary power source to switch A and
the alternate power source to switch B as shown in
the electrical drawing. Leave both switches in the ON
position during normal operation. The system will
operate with power source A unless a switchover
(auto or manual) occurs. See Section 1.5.6.
The size of the electric box and location of components vary according to the STULZ CyberAir model and options
selected. Figure 16 shows a sample electric box layout (with dual power option) and identifies the major
components. The numbered call-outs in Figure 16 coincide with the numbered items listed below:
1. Microprocessor Controller I/O Module
2. Control Interface Terminals
3. Preferred Power Selector Switch
(Optional)
4. Contactors for Dual Power (Optional)
5. Main Power Disconnect Switch
6. Alternate Power Disconnect Switch (Optional)
7. Ground Lug
8. Velocity Sensor (Optional)
9. Motor Starter Protectors (Quantity Varies)
10. Expansion Module (Optional)
Figure 16- Electric Box
2-14
1
10
9
8
2
3
5
6
4
7
