Orion System SA Controller - Manual (Page 17)

SA Controller Technical Guide
Installation & Wiring
17
Water Side Economizer Wiring
Water Side Economizer (WSE) Valve(s)
The Water Side Economizer Valve(s) must be wired as shown in Figure
12 below for proper operation of the SA Controller. The Water Side
Economizer Valve(s) connects to AO1 on the SA Controller.
NOTE: For Dual Cabinet Units, wire the Second Cabinet’s WSE
Valve Actuator in parallel with the First Cabinet’s WSE Valve
Actuator.
Figure 12: Water Side Economizer Valve Wiring
Figure 13: Water Side Economizer Bypass Valve Wiring
Water Side Economizer (WSE) Bypass
Valve
The Water Side Economizer Bypass Valve(s) must be wired as shown in
Figure 13 below for proper operation of the SA Controller. The Water
Side Economizer Bypass Valve(s) are wired to AO4 and AO5 on the
SA Expansion Module.
NOTE: For Dual Cabinet Units, wire the Second Cabinet’s WSE
Bypass Valve Actuator to AO5 on the SA Expansion Module.