13
1. Make sure that all of the cable joints and the two transparent pressure measuring tubes to the extract air fan are cor-
rect assembled between the unit parts.
2. Wire the prepared control cable to the Topvex TR electrical cabinet (in the supply air part), use the prepared grom-
mets. Connect the wires to the terminal blocks in the electrical cabinet according to labelling on the wires and the
electrical wiring diagram. See also the chapter Internal electrical connections.
3. Connect the unit electrically to the mains (400V 3N~, 50Hz) through the all pole circuit breaker, safety switch (acces-
sory). The wiring is led through the top of the unit casing directly to the Topvex SoftCooler electrical connection box.
Dimension the wires and fuses according to chapter 4.2.2.
4. Do the electrical connections for the Topvex TR air handling unit according to the installation instructions that follows
that unit.
6.8.1
External/Internal connections
See also the enclosed wiring diagram.
Mains power supply (and in some cases By-pass damper) is the only external connection that should be connected to
the Topvex SoftCooler.
Table 1 External connections
Terminal
block
Description
Remark
PE
Ground
400V 3N~, 50Hz,
supplied via safety
switch
N
N
Earthed neutral (supply voltage)
L1
L1
Phase (supply voltage)
L2
L2
Phase (supply voltage)
L3
L3
Phase (supply voltage)
28
G
By-pass damper”DBEH” exhaust air (option)
24V AC
29
GO
By-pass damper ”DBEH” exhaust air (option)
Neutral (24 VAC)
The already prepared operating cable in Topvex SoftCooler is to be drawn to the electrical cabinet in the supply part of
the Topvex air handling unit and connected to the terminal blocks with the same numbers as the cable markings.
Table 2 Internal connections
Terminal
block
Description
Remark
G
G
24V AC
4
DI ref
Referens
10
DO ref
Referens
12
DO
Exhaust air damper. A signal from control unit is lead via the
relay R2 to terminal 28 for controlling of the by-pass
damper (accessory).
24V AC, 0.5A
14
DO
A signal from control unit for starting
Step controller 1
step 1
indicates a cooling demand. The signal controls relay
R2 that is then closing the by-pass damper (accessory).
24V AC, 0.5A
15
DO
A signal from control unit for starting
Step controller 1
step 2
indicates a cooling demand. The signal controls relay
R1 that is then starting the compressor.
24V AC, 0.5A
74
DI
Alarm indication cooling
Malfunction cooling (SEQ-
C)
.
NO
90
AO ref
Reference
94
AO
Control signal from control unit for cooling. Controls the
frequency converter "FC".
0-10V DC
208767 | A006
Summary of Contents for Topvex TR 09 Series
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