Rehau Ba - Connecting Thermal Actuators (TH 1 - TH 8); External Switch;Timer

35
THERMAL ACTUATORS 24V
L N L L L L LN N N N N
OUT PUT 1
L N L L L L LN N N N N
THERMAL ACTUATORS 24V
L LN N
L LN N
Out put 2 Out put 3 Out put 4 Out put 5 Out put 6 Out put 7 Out put 8
OUT PUT 1 Out put 2 Out put 3 Out put 4 Out put 5 Out put 6 Out put 7 Out put 8
ZONE 1 ZONE 4
BA Master Controller
THERMAL ACTUATORS
1 2 3 4 5 6
L N L L L L LN N N N N
1 2 3 4 5 6
L N L L L L LN N N N N
THERMAL ACTUATORS
7 8
L LN N
7 8
L LN N
SWITCH
EXT.
I O
+ +
TT
LINK
DISPLAY
L YN X
SUPPLY
SENSOR
THERMOSTAT BUS
+
T
+
T
APP
SENSOR
THERMOSTAT BUS
MIXING VALVE
0 - 10V
MIXING VALVE 24V AC
+
T
ON
OFF
1 2 3
4 5
6
7
8
C
B
A
9
8
7
6
5
4
3
2
1
0
F
E
D
7
6
5
4
3
2
1
0
9
8
STRING
NUMBER (1-F)
UNIT
NUMBER (1-9)
DIP SWITCH
SUPPLY
230VAC
BOILER
B1 B2
X-RELAY SEC. PUMP
230VAC
LL NN
C1 C2
28. Actuator connection to Master Controller
29. Connection of external switch/ timer located on the Master Collection
TIMER. EXTERNAL SWITCH
VOLT FREE
CONTACTS
5.2.5 Connecting Thermal Actuators (TH 1 – TH 8)
Maximum 14 x 24 Volt actuators per controller.
Ensure that the actuators are connected to the correct zone.
Actuators controlled by zone 1 must be connected to output
terminal 1 (TH 1) etc.
Connect one wire from the actuator to right hand terminal on the
respective zone output terminal block (TH 1-TH 6) then connect the
other wire from the actuator to the left hand terminal block. These
terminal blocks are not polarity sensitive.
A maximum of 4 actuator heads can be installed into each
output, 2 terminal blocks, 14 actuator max. per controller
within the controller as long as they are to be controlled by
the same sensor.
5.2.6 External Switch/Timer
The controllers can accept a volt free signal from an external switch /
timer which will facilitate the switching between day mode and night
set back mode only. For setback the switch will be in OPEN circuit and
CLOSED for day- time operation. Each controller type comes fitted
with a link across the Ext switch. This link has to be removed and
replaced with the switch/timer connection all other system parameters
will have to be programmed into either a REHAU CT2 Programmable
Room Sensor. No system programming is available with the REHAU BA
controller. (See section 8.1 System Start Up & Operating Instructions).
Connection of the external switch/timer will override the
settings of any CT2 Programmable Room Sensors installed onto
the system.