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Wiring
Wiring Procedure
Vlastní schéma propojení (vč. kabeláže) a pokyny pro montáž,
uvádění do provozu a obsluhu zařízení jsou součástí průvodní
dokumentace řídicí jednotky zařízení a je nutno využít rovněž
pokyny pro uvádění do provozu a obsluhu v tomto návodu.
General instructions for connecting
the compact air-handling unit to the control unit
Connect the external M&C sensors
Complete the conductive connection (grounding) of the
insulated elements.
Connect the main power supply (to the location described
in the chapter "Electrical Equipment Wiring").
Check the completed wiring.
Check the tightening of the cable grommets, and blind tho-
se unused.
Perform an initial inspection of the electrical equipment.
General instructions for connecting the compact
air-handling unit to the external control unit:
Connect the external M&C sensors
Connect internal M&C elements and integrated drives by
running wires from the control unit to the corresponding termi-
nals in the terminal box.
Complete the conductive connection (grounding) of the
insulated elements.
Run the main power supply to the main terminal box of the
control unit.
Check the completed wiring.
Check the tightening of the cable grommets, and blind tho-
se unused.
Perform an initial inspection of the electrical equipmen.
Note:
To prevent damage to the cable insulation, use only dedicated
grommets in the external casing to route the cables and cable
harnesses into the interior of the air-handling unit.
Control Unit and Control Unit Communication
A separate manual is provided for the control unit.
EC motors
The fans used in the unit are equipped with EC motors.
If the control unit (internal or external) is delivered along
with the unit, the motors have already been connected in the
factory.
If access to the motor terminal box is needed, it is necessa-
ry to pull out the entire fan from its position.
Rated voltage 1x230 V AC 50 Hz for outputs up to 1.3 kW.
Rated voltage 3x400 V AC 50 Hz for outputs above 1.3
kW and up to 6 kW. As standard, they are designed for frequen-
cy 50 Hz. A motor can optionally be delivered for a frequency of
60 Hz.
Installed EC motors are equipped with automatic heat,
electronics and overload protections.
CAKE Air-handling units
Note: If you are considering connecting the air-handling unit
to a 60 Hz power supply system, it is necessary to check
whether the parameters of the air-handling unit have been
designed for this frequency.
To pull out the fan:
Loosen the side screws on the front clamping bar of the
base.
Remove the released clamping bar.
Pulling the base plate towards you pull the fan out of its
seat.
When inserting the fan back, follow the steps above in re-
verse order.
Figure 18 – Pulling out the fan
If the protective interconnections have been disconnected,
reconnect them.
Air Flow Control
If the delivery includes an air flow control sensor, it is fitted inside
the unit. As an option, preparation for non Remak sensor installa-
tion inside the unit is offered. Holes in the doors are prepared
for its connection. Depending on the type of operating pressure
Size
Cpro-ECblue
225
–
250
60
280
75
315
95
355
121
400
154
450
197
500
252
560
308
630
381
or volume, an air-flow rate
sensor can be used.
The sensor's inputs are
connected to two hose lines
Line (+) is terminated at the
sensing terminal in the inlet
while the sensing line (-) is,
terminated in the fan
diffuser under the impeller
The sensor must be properly
set to ensure the correct
conversion of the measured
pressure to the air flow.
This is performed using a spe-
cific factor (constant) which is
dependent on the impeller
size (see the table).
11
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