8
PREHEAT-X Technical Guide
Outputs
The PREHEAT-X works as a stand-alone module or
communicating with the VCCX2 or other AAON unit controllers.
For connection to the PREHEAT-X, use an E-BUS Cable
connecting to the appropriate E-BUS ports. See
Figure 3
,
this
page
for the Outputs Wiring.
1 amp maximum load.
Note:
All relay outputs are normally open
and rated for 24 VAC power only.
PREHEAT-X = 11VA
Size transformer for correct total load.
EBC E-BUS cable connects to
VCCX2 or other AAON unit
controller’s expansion port.
HSSC E-BUS cable
connects to the VCM-X
Controller’s expansion
port
ALARM
HEAT 1 RELAY
HEAT 2 RELAY
HEAT 3 RELAY
HEAT 4 RELAY
HEAT 5 RELAY
HEAT 6 RELAY
Relay
Contact
Modulating SCR
(0-10 VDC)
PWM SSR
GND
VAC
18-30
Line
Voltage
Figure 3: PREHEAT-X Outputs Wiring Diagram
WIRING
Outputs Wiring
