BA Systems—Petershvilevej 1—DK-3200 Helsinge—http://www.basystems.dk
43
BAS 918S/929S
Manual
Scheme 4, wireing diagram
24VAC or 24VDC installation
Note:
L label indicates PHASE connection, i.e. all wires with ”L” must be connected
N label indicates NUL connection, i.e. all wires with ”N” must be connected
Motor valves will often have a common terminal for NUL and Analog reference (-). If so AO÷
and NUL must be connected.
Water metering scaling to be defined when selecting controlling scheme.
24VAC as well as 24VDC may be used as supply. Above wiring assumes that Circulation pump
and Motor valve is selected to support the same supply as the controller.
DO8B
DO8A
DO4B
DO4A
DO5B
DO5A
DO6B
DO6A
DO7B
DO7A
DO3B
DO3A
240VAC/N
240VAC/L
24VAC/L
24VAC/N
DO1B
DO1A
DO2B
DO2A
DI4
DI3
DO9B
DO9A
DO10B
DO10A
DO11B
DO11A
DI2
DI1
AI5+
AI5
–
AI1+
AI1
–
AI2+
AI2
–
AI3+
AI3
–
AI4+
AI4
–
AI10+
AI10
–
AI6+
AI6
–
AI7+
AI7
–
AI8+
AI8
–
AI9+
AI9
–
OP1
OP2
AO1+
AO1
–
AO2+
AO2
–
AO3+
AO3
–
AO4+
AO4
–
DI
C
O
M
AO
3
_
I
OP
3
AO
4
_
I
24VAC/L
24VDC+
24VDC-
240VAC/L
240VAC/N
24VAC/N
24VAC
Outdoor
temperature
Forward
temperature
CH
+t°
+t°
PT1000
PT1000
L
N
Motor valve
CH
EL
L
N
Te
rm
in
a
ls
fo
r
P
H
A
SE
c
o
n
n
e
ct
io
n
Te
rm
in
a
ls
f
o
r
N
U
L
co
n
n
e
ct
io
n
N
L
Power
supply
N
Circulation
pump CH
L
N
Circulation
pump HWT
L
Motor valve
HWT
EL
L
N
+t°
Primary return
temperature
CH
PT1000
+t°
Tank
temperature
HWT
PT1000
+t°
Return
temperature
HWT
PT1000
+t°
Circulation
temperature
HWT
PT1000
+t°
Secondary return
temperature
CH
PT1000
Water
meter
