Honeywell ComfortPoint Open CPO-VAV2A Installation Instructions Manual page 17

+ -
AIRFLOW
PICKUP
Shied should
be continuous
MSTP Channel
Figure 27 Controller wiring diagram for typical VAV application - with modulating valves, CPO-TR40 and TR42 Wall Modules
+ -
L
H
AIRFLOW
PICKUP
MSTP Channel
L
CPO-VAV2A
H
5
Sylk Bus
Address Dial
CPO-TR40/42
CPO-VAV2A
Temperature
Sensor
- + Y
~ G G0
4 wires external 3 wires external
powered 0...10V device powered 0...10V device
Figure 28 24 Vac power and IO wiring diagram
Y Y
G G0
G G0
Modulating valve :
3 wires external
powered 0...10V device
DO for Integrated
actuator
TRIAC EQUIVALENT
CIRCUIT
L
L L L
Y
G G0
17
DO for Integrated
actuator
TRIAC EQUIVALENT
CIRCUIT
24V AC
24V AC COM
240/24 Vac
Minimum 40VA
Always use same
phase to power
controls
24V AC
24V AC COM
Transformer secondary
remains floating
No earth
EN1B-0022 IE10 R0717
CABLING
C/B A
N
E