Sorel TDC 4 - Electrical Connection

24
Terminal connection diagram,
program 15
Fig. 3.2.16 “Universal 2x ∆T controller”
Caution
Relay R1: Only for speed con-
trol of standard pumps, mini-
mum load 20VA
Mains voltages 230VAC 50-60Hz
Connection in the right-hand terminal
compartment!
Terminal: Connection for:
L Mains phase conductor L
N Mains neutral conductor N
R1 Pump L (speed)
N Pump N
R2 e.g. pump L
N e.g. pump N
The PE protective conductor must
be connected to the PE metal terminal
block!
Sensor side
max. 12V
Danger
Caution
Mains side
230VAC
Brief description of switching function:
The ∆T function sensor 1 > sensor 2
switches the pump to relay R1.
The ∆T function 2 > sensor 3 switches
the pump to relay R2.
Installation
3 3
3.2 Electrical connection (continued)
Low voltage max. 12VAC/DC connec-
tion in the left-hand terminal compart-
ment!
Terminal: Connection for:
S1 Sensor 1 (control)
S2 Sensor 2 (ref.+control)
S3 Sensor 3 (thermostat)
S4 Sensor 4 ow heat meter
S5 VFS return heat meter
(yellow)
S6 VFS ow l/min
(white)
+ VFS +5V DC
(brown)
- jumper terminal block-
Connection of sensor earths (S1-S4)
and VFS (green) earth via terminal
block sensor-
The polarity of the sensors S1 to S4 is
freely selectable.
Caution
Vortex ow sensor installation
advice
To prevent damage to the Vortex ow
sensor it is strongly recommended to
install the sensor in the return! (see also
12.7 heat metering)
The VFS has to be installed in the cor-
rect ow direction!
For additional advice regarding the sen-
sors and the VFS see 3.3 „Installating
the temperature sensors“ on page 25.