TEL AFA4000/E, Installation And Operating Manual

Page: 166 / 210

AFA4000/E VAV Airflow Controller / p.166
9. Auxiliary features and connections
9.1 Dual set point (occupancy) operation
The Dual Set Point function operates with a PIR occupancy sensor, enabling the controller to
operate to a lower Econ control velocity set point and reduced alarm points when the fume
cupboard is unoccupied.
When the dual set point function is active, the controller displays High Set Point , Low Set Point
or Manual above the output status bar graph, indicating the current occupancy condition.
Figure 73: Typical connection diagram
Press the
↑
and
↓
arrows to scroll through the menu list and press Mute to select the required
option.
Figure 8 Lead for mains
socket.
240V 50Hz -- UK 3-pin
120V 60HZ -- US 2-pin
0 2 4 1 0 0 2 4 1 0 SW +V SW +V SW +V BN BL BK Y BK R
+V 0 V SW W Z S
RELAY INTERFACE UNIT
Volt Free Relays
(10A 240VAC AC1)
R1 R2 R3 R AUX
ECON ECON SASH SASH
O/P 1 O/P 2 I/P 1 I/P 2 I/P 3 HIGH SENSOR
ON 1 2 3
AUXILLIARY RELAY SELECT
SWITCH
R
E
D
B
L
A
C
K
WH
IT
E
Sash Hig h
Micro or Proximity switch
(Optional)
Fume Cupboard
Da mper Actuator
3M 3 CORE
FLYING LEAD
ELV
FOR PLUG IN
CONNECTION
TO
AFA1000
RED
BLACK
WHITE
3M 3 CORE
FLYING LEAD
ELV
FOR HARD WIRED
CONNECTION
*WITH JUNCTION BOX
FOR DISTANCES MORE
THAN 3M AWAY FROM
RELAY INTERFACE BOX
ACTUATOR
SOCKET (3 WAY)
PERSONNEL SENSOR
B
L
A
C
K
G
R
E
E
N
R
E
D
&
WH
IT
E
2M
FLYING LEAD