Typical Wiring Connections
Supply
Voltage
Cabling
Requirements
Wiring Considerations
The Controller requires either a 12-24Volt AC or DC Supply.
This diagram assumes a 24 Volt AC connection
. Note terminals "M" &
"-"
are
internally
connected so as to allow a common ground reference.
Its is recommended to connect remote input devices using twisted pair
screened cable. Screened cable shield should be grounded to a good Earth
at the controller end only.
SRT-D
2 WIRE
SRT-DSW
2 WIRE
SRT-DSP
3 WIRE
SRT-DSPSW
SDT-D
2 WIRE
AVAILABLE SENSORS
3 WIRE
SOT-D
2 WIRE
OSAO
HCRW5
ROOM TEMPERATURE SENSOR
" + ON/OFF SWITCH
" C/W SETPOINT POT.
" C/W S/P + ON/OFF SW.
DUCT TEMPERATURE SENSOR
OUTSIDE AIR SENSOR (PASSIVE)
OUTSIDE AIR SENSOR (ACTIVE)
ROOM CO2 SENSOR
3 WIRE
3 WIRE
HCRW5
ROOM TEMP. & CO2 SENSOR
4 WIRE
OPERATIONAL NOTES:
If a
remote setpoint
device is connected (X2)
then local setpoint control (via Controllers UP
& DOWN buttons) is disabled.
System Off & AHR
switch functions can be
triggered by ground connections to either X1
or D1.
Manual Off
(X1 or D1) takes priority
over manual On (D2).
CONNECTIONS
OPTIONAL
SYSTEM OVERRIDE
ON
OFF
AUTO
AHR
D3
EX
T.
A/C
FAULT
N/O I/P
D4 EXT. STATUS N/O I/P
(for
Monitoring only
)
ALL "M" TERMINALS INTERNALLY
CONNECTED TO "
-
" POWER
SUPPLY TERMINAL
MODBUS
TERMINALS
24/2
8
23/10/19
HEVAC CONTROL AGENCIES PTY LTD. 7/54 HOWLEYS RD.
NOTTINGHILL, VIC. 95627888
www.hevac.com.au
