11
Adjustment motor open/closed
The adjustment motor is mounted directly on the flat
axis. It is equipped with a universal terminal block and
is fastened into place with a locking piston supplied with
the unit.
The drive has a mechanism protecting it from overload-
ing and requires no final switch. For manual operation,
the transmission can be automatically disengaged using
the automatic reset knob.
Wiring diagram
KSH
Frost protection mechanism
The frost protection thermostat is a precise water tem-
perature regulator that can also be retrofitted to the sur-
face of the pipe connections.
The supplied tension strap with clamps makes it possi-
ble to assemble it at a later time without having the
drain the heating system.
The thermostat is equipped with a precision snap-action
switch.
Installation
Prior to assembly, the pipe insulation in the area where
the sensor is to be installed must be removed. The
parts necessary for assembly such as tension strap,
clamps, etc., are supplied with the unit.
Wiring diagram
Technical data:
Adjustment range 25 to 95 °C, switching differential
adjustable.
Maximum ambient temperature 70° C.
Contact 1
Opens when the temperature
rises.
Contact 2
Closes when the temperature
rises.
2
1
C
ϑ
Technical data:
Adjustment motor Type KSH protected against
overloading.
Capacity 10 W, 230 volt, 50 Hz.
Protection type IP 54, running time approx. 180
seconds
Maximum ambient temperature 55° C.
Motor control units, 5-speed
5-speed control unit for alternating and rotary current
with operating light. The motor is protected by connect-
ing thermal contacts.
Should a problem occur (when the thermal contacts are
activated), the internal main contactor lapses and inter-
rupts the power supply to the motor. After the cause of
the problem has been removed, the speed selector can
be reset.
It is possible to connect the control units to a room ther-
mostat that switches the unit on and off.
Terminal panel wiring diagram switching unit RTRD
Incoming voltage: 400V / 3~ N / 50 Hz
RTRD
3~ motor with integrated
thermal contacts
Room
thermostat
High speed
∆
- switching
Low speed
Y
- switching
Connecting the fan motor
Motor with 2 speeds,
∆
/ Y switch
and thermal contacts
Switching
unit
Voltage
V
Power
A
Protection
type
IP
Weight
kg
RTRD 2.5
400
2.5
54
10.5
RTRD 4.5
400
4.5
54
15.1
