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6.1 Important general instructions
The appliance must be isolated from the power supply while installation or
connection works are carried out!
The "Off" position (O) of the main control
switch I/O doesn’t indicate a complete zero potential of the controller!
We recommend that
the
installation
is
to be carried out in accordance with the national
local and
any local Bye-laws and the UL wiring regulation.
The power supply connection terminals identified as "L
24V
"
and "COM". The "COM" connection
point is the common ground in the circuit: it is directly connected to the marked "C" points of the
relay
outputs
and
it
is
also
the
common
point
of
the
signal
input
terminals
and
the
communication terminal. The "L
24V
" power supply is connected through a Fuse (6.3A) to the
connection terminal "L1".,
It is very important to make connections correctly in accordance
with the wiring schemes of the selected application program!
6.2 Sensor connections
The sensor has to be connected with two wires. There is no need to provide the sensor with
shielded cables, because the controller includes an effective protector. The length of the wires
(up to 200 m) has no influence on the accuracy of the measurement. Please avoid running the
sensor wires
next to high voltage wires. The sensor connection has to match the selected
operating program. Unused inputs have to be kept free of usage!
6.3 Connection of the heaters
Only 24VAC Class 2 equipments can be connected to the controller !
The relays inside the
controller are switching 24VAVC
powered contacts
on the connection terminals. Use 24VAC Class 2 rated power
relays to connect heaters that operate with higher than extra low voltage. Connect the heaters
only at the provided terminals. Please note that the total load of the controller is limited to the
value of 6.3 A.
6.3.1 Modulation outputs (2-10V)
There are four modulation (2-10V) outputs (terminals 80-85). These will work simultaneously
with the two-stage zones. Wiring should be carried out in accordance with the actual heater
types (two-stage or modulation).
Example given: With program P5 selected, the first stages should be connected to terminals 20,
24 28, 32 (chapter. 6.4).
In case of two-stage heaters, second stage should be connected to 22, 26, 30, 34.
In case of modulating heaters, the 2-10V inputs should be connected to terminals 80, 82, 83,
85. It is not important to have the same type of heaters in every zone.
If a zone is set to be one-staged, its modulation output will give 0V. (e.g. P4 – zone 4, zone 5)
Outputs are protected from short-circuits, each can be loaded with 8mA (load
≥
1,2kOhm).
Pay special attention for the common ground while
connecting external devices, to avoid making a short-
circuit. When several ThermoContorol units are
connected to one 24VAC power supply, be careful to
connect the same terminals of the power supply to the
"L
24V
" and "COM" terminals of the units.
Summary of Contents for ThermoControl Plus 4M
Page 22: ... 22 6 4 Wiring connections ...
Page 23: ... 23 ...
Page 28: ... 28 8 Appendix Wiring diagram ThermoControl Plus 4M 1 8 Zones single stage luminous heater ...
Page 29: ... 29 Wiring diagram ThermoControl Plus 4M 1 4 Zones two stage luminous heater ...
Page 30: ... 30 Wiring diagram ThermoControl Plus 4M 1 8 Zones single stage radiant tube heater ...
Page 31: ... 31 Wiring diagram ThermoControl Plus 4M 1 4 Zones two stage radiant tube heater ...
Page 32: ... 32 Wiring diagram ThermoControl Plus 4M 1 4 Zones modulation radiant tube heater ...
