10
Installation
3
3
3.2 Electrical connection
(continued)
Terminal connection diagram, program 2
Fig. 3.2.3 „Universal
Δ
T controller“
Fig. 3.2.2 “Solar with storage tank“
Terminal connection diagram, program 1
Low voltage
max. 12VAC/DC
connection in the left-hand terminal
compartment!
Terminal:
Connection for:
S1 (2x)
Sensor 1 collector
S2 (2x)
Sensor 2 storage tank
S3 (2x)
Sensor 3 (optional)
The polarity of the sensors is freely
selectable.
Sensor side
max. 12V
Danger
Caution
Mains side
230VAC
Caution
Options for sensor 3:
display, Tmax function,
heat metering (see 12.7)
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
The PE protective conductor must
be connected to the PE metal terminal
block!
Relay R1: For speed control of
standard pumps, minimum load 20VA
Low voltage
max. 12VAC/DC
connection in the left-hand terminal
compartment!
Terminal:
Connection for:
S1 (2x)
Sensor 1 (control)
S2 (2x)
Sensor 2 (reference)
S3 (2x)
Sensor 3 (thermostat)
The polarity of the sensors is freely
selectable.
Relay R1: Only for speed
control of standard pumps,
minimum 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
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
Δ
T function sensor 1 > sensor 2
switches the pump to relay R1.
Caution
Summary of Contents for TDC 2
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