VCB-X Controller Field Technical Guide
INSTALLATION & WIRING
21
VCB-X Controller Output Wiring
Figure 7: VCB-X Controller Output Wiring
MADE IN USA
NOTE:
ALL RELAY OUTPUTS ARE NORMALLY
OPEN AND RATED FOR 24 VAC POWER
ONLY - 1 AMP MAXIMUM LOAD
CONFIGURABLE RELAY OUTPUT #5
CONFIGURABLE RELAY OUTPUT #4
CONFIGURABLE RELAY OUTPUT #3
CONFIGURABLE RELAY OUTPUT #2
24 VAC POWER
SUPPLY FAN
24 VAC ONLY
ECONOMIZER
ACTUATOR
SUPPLY FAN VFD
+
COM
2 +
Y1
3
COM
1
R1
G
R4
R5
R3
R2
H
V
A
C
U
N
IT
C
O
NNECTIO
NS
R
MODULATING HEATING
(SCR OR HOT WATER VALVE)
+
COM
DIGITAL COMPRESSOR
COMM
CONFIGURABLE RELAY OUTPUT #6
R6
+
GND
UNLOAD
24 VAC
AOUT1
AOUT2
AOUT3
GND
GND
24VAC
GND
VCB-X CONTROLLER
Line
Voltage
Size Transformer For
Correct Total Load.
VCB-X Controller = 8 VA
NOTE:
RELAY CONTACTS R1-R5 MAY BE CONFIGURED FOR:
1.) HEATING STAGES
2.) COOLING STAGES
4.) CONDENSER
5.) REVERSING VALVE
6.) HEAT PUMP COMPRESSOR
7.) PREHEAT
8.) AUX HEAT
10.) ALARM
11.) OVERRIDE
12.) OCCUPIED
13.) ECONOMIZER
14.) MOD HEAT ENABLE
15.) EMERGENCY HEAT
9.) LOW AMBIENT
3.) DIGITAL COMPRESSOR
16.) MOD COOL ENABLE
17.) MORNING WARM-UP /
18.) REHEAT
19.) EXHAUST FAN
20.) HEAT WHEEL
X
ENTER
UP
DOWN
ALARM
CANCEL
RELAY CONTACT
RATING IS 1 AMP
MAX @ 24 VAC
RS-485 COMM
LOOP. WIRE
“R” TO “R”,
“T” TO “T”
“SHLD” TO “SHLD”
24 VAC POWER
ONLY
WARNING!
POLARITY MUST
BE OBSERVED
OR THE
CONTROLLER
WILL BE
DAMAGED
www.aaon.com
www.orioncontrols.com
VCB-X CONTROLLER
Orion No.: OE335-26B-VCBX
AAON : V28940
AAON Coil: J00142
ANALOG INPUTS
AI1
= SPC (SPACE TEMP SENSOR)
AI2
AI3
AI4
AI5
BI1
BI2
BI3
BI4
AO1
AO2
AO3
TR1
= SAT (SUPPLY AIR TEMP SENSOR)
= OAT (OUTDOOR AIR TEMP SENSOR)
= DCT (DIGITAL COMP DISCH TEMP SENSOR)
= SPACE TEMPERATURE SLIDE OFFSET
= EMERGENCY SHUTDOWN
= PROOF OF FLOW
= DIRTY FILTER
= COIL TEMP SWITCH
= FAN VFD
= ECONOMIZER
= MOD HEATING
= DIGITAL COMP
UNLOADER
(24 VAC & UNLOAD
TERMINALS)
BINARY INPUTS
G OUTPUTS
TRIAC OUTPUT
ANALO
WattMaster Label
#SW000061
Rev.: 1A
E-BUS
EXPANSION
E-BUS
EXPANSION
+24
VAC
GN
D
FAN
RELAY 2
RELAY 3
RELAY 4
RELAY 5
RELAY 6
RELAY
COMMON
COOL-DOWN
VCB-X Controller Outputs
The VCB-X Controller must be connected to 24 VAC as shown
in the wiring diagram below. Please see
Table 1
for correct VA
requirements to use when sizing the transformer(s) used for powering
the Controller.
Also please note that when wiring the VCB-X Controller, its contacts
must be wired as wet contacts (connected to 24 VAC).
Revised 4/11/14
