Orca PICO 50 Plus User manual

USER'S MANUAL
Heat regeneration single-room reversible ventilator
V1_2021

II
These instructions are intended for technical, maintenance and operational personnel.
The operating instructions contain information on the purpose, technical details, principle of operation, design and installation
of the PICO 50+ and all its variants.
Technical and maintenance staff must undergo theoretical and practical training in the field of ventilation systems and must
be able to operate in accordance with workplace safety regulations and construction norms and standards in force in the
country. The information in this user guide is current at the time of writing.
The company reserves the right to change the technical characteristics, shape or configuration of its products at any time in
order to take into account the latest technological developments.
No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means in any
retrieval system or translated into any language in any form without the prior written permission of the Company.

III
Content
1 SAFETY REQUIREMENTS ..................................................................................................................................1
1.1 Unit installation and operation safety precautions.................................................................................2
2 PURPOSE..........................................................................................................................................................4
3 TEHNICAL DATA ...............................................................................................................................................5
4 DIMENSIONS....................................................................................................................................................6
5 FUNCTIONING..................................................................................................................................................7
5.1 Ventilator design .....................................................................................................................................7
6 VENTILATOR OPERATION MODES ...................................................................................................................8
7 MOUNTING AND SET-UP .................................................................................................................................9
7.1 Installation of the control panel with LCD display...................................................................................9
7.2 Ventilator mounting ..............................................................................................................................10
7.3 Installing the front panel .......................................................................................................................14
7.4 Connection to power mains ..................................................................................................................16
7.5 Wiring diagram for the ventilator with control panel with LCD display................................................17
8 UNIT CONTROL USING BUTTONS ON THE LCD ..............................................................................................18
9 REMOTE VENTILATOR CONTROL ...................................................................................................................22
10 MAINTENANCE ..............................................................................................................................................24
11 TROUBLESHOOTING ......................................................................................................................................26
12 STORAGE AND TRANSPORTATION REQUIREMENTS......................................................................................27

Users manual PICO 50+
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1SAFETY REQUIREMENTS
•Please read the user’s manual carefully prior to installing and operating the unit.
•All user’s manual requirements as well as the provisions of all the applicable local and national
construction, electrical, and technical norms and standards must be observed when installing and
operating the unit.
•The warnings contained in the user’s manual must be considered most seriously since they contain
vital personal safety information.
•Failure to follow the rules and safety precautions noted in this user’s manual may result in an
injury or unit damage.
•After a careful reading of the manual, keep it for the entire service life of the unit.
•While transferring the unit control, the user’s manual must be turned over to the receiving
operator.

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1.1 Unit installation and operation safety precautions
Unpack the unit with care.
Disconnect the unit from
power mains prior
to any installation
operations.
The unit must not be
grounded!
While installing the unit,
follow the safety
regulations specific to the
use of electric
tools..
Do not change the power
cable length at your own
discretion. Do not bend the
power cable. Avoid
damaging the power
cable. Do not put any foreign
objects on the
power cable.
Do not lay the power cable
of the unit in
close proximity to heating
equipment.
Do not use damaged
equipment or cables
when connecting the unit to
power mains.
Do not operate the unit
outside the temperature
range stated in the user’s
manual. Do not operate the
unit in aggressive or
explosive environments.
Do not touch the unit
controls with wet hands. Do
not carry out the installation
and maintenance operations
with wet hands..
Do not wash the unit with
water. Protect the electric
parts of the unit against
ingress of water.
Do not store any explosive or
highly
flammable substances in
close proximity to
the unit.
When the unit generates
unusual sounds, odour, or
emits smoke, disconnect it
from power supply and
contact the Seller.
Do not open the unit during
operation.
Do not direct the air flow
produced by the unit
towards open flame or
ignition sources.
Do not block the air duct
when the unit is switched
on.
In case of continuous
operation of the unit,
periodically check the
security of mounting.

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Do not sit on the unit and
avoid placing foreign objects
on it.
Use the unit only for its
intended purpose.
Do not allow children to
operate the unit..
Disconnect the unit from
power mains prior to any
technical maintenance.
The product must be disposed separately at the end of its service life.
do not dispose the unit as unsorted domestic waste.

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2PURPOSE
The unit is designed to ensure continuous mechanical air exchange in houses, offices, hotels, cafes, conference halls, and other
utility and public spaces as well as to recover the heat energy contained in the air extracted from the premises to warm up the
filtered stream of intake air. The unit is not intended for organizing ventilation in swimming pools, saunas, greenhouses,
summer gardens, and other spaces with high humidity.
Due to the ability to save heating energy by means of energy recovery, the unit is an important element of energy-efficient
premises. The unit is a component part and is not designed for stand-alone operation.
It is rated for continuous operation.
Transported air must not contain any flammable or explosive mixtures, evaporation of chemicals, sticky substances, fibrous
materials, coarse dust, soot and oil particles or environments favourable for the formation of hazardous substances (toxic
substances, dust, pathogenic germs).
The temperature in the room where the indoor unit of the ventilator is installed must be in the range from +1 ˚C to +40 ˚C
with relative humidity up to 65 % (no condensation build-up). If the conditions for using the ventilator are beyond the specified
limits, turn off the ventilator and provide fresh air supply through windows. The inlet air temperature must be in the range
from -15 ˚C to +40 ˚C.
The unit is rated as a class II electric appliance and must not be grounded. Valuated ingress Protection (IP) rating from solid
objects and liquids is IP24.
The unit design is constantly being improved; thus, some models may be slightly different from those described in this manual.
The unit should not be operated by children or persons with reduced physical, mental, or sensory
capacities, or those without the appropriate training.
The unit must be installed and connected only by properly qualified personnel after the appropriate
briefing.
The choice of unit installation location must prevent unauthorized access by unattended children.

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3TEHNICAL DATA
SPEED
PICO 50+
I
II
III
Supply voltage (V)
230
Power consumption [W]
1.00
2.1
4.3
Total current consumption [A]
0.024
0.026
0.039
RPM [min-1]
519
1555
2330
Air capacity in ventilation mode [m3/h]
15
30
50
Air capacity in regeneration mode [m3/h]
8
15
25
Filters
G3 (option F8)
Transported air temperature [°C]
-15 do +40
Sound pressure level @ 1 m [dB(A)]
28
33
39
Sound pressure level @ 3 m [dB(A)]
19
22
29
Heat exchanger material
ceramics
Heat recovery efficiency [%]
≥ 92
Pipe diameter [mm]
160
Ingress protection rating
IP 24

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4DIMENSIONS
Overall dimensions of the indoor unit [mm]

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5FUNCTIONING
The ventilator consists of an indoor assembly unit with a decorative front panel, a cartridge, an air duct with a sound absorbing
mat and an outer ventilation hood.
Cartridge is the basic functioning part of the unit. It consists of a fan, a generator and two filters that ensure primary air filtration
and prevent ingress of dust and foreign objects into the regenerator and the fan.
The indoor unit is equipped with a manually operated rotary air damper.
Attention! During closing of air damper, the ventilator continues to run, but the air flow is closed.
The protecting grille or ventilation hood must be installed on the outer wall to prevent ingress of water and foreign objects
into the ventilator.
5.1 Ventilator design

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6VENTILATOR OPERATION MODES
The ventilator has two operation modes:
Ventilation mode
The ventilation system operates in the air supply or exhaust mode at the set speed.
In this mode in case of the installation of two ventilators, one ventilator supplies air into the room and the other one extracts
used air.
Regeneration mode.
The ventilator operates cyclically in two cycles, each of 70 seconds, with heat and humidity recovery.
•Cycle I. Warm air is removed from the room. As it flows through the heat exchanger, it heats and
humidifies the heat exchanger and transfers heat and moisture to the air. 70 seconds after the
ceramic regenerator starts to get warmed, the ventilator is switched to the air supply mode.
•Cycle II. Fresh inlet air from the outside flows through the ceramic transmitter and absorbs the
accumulated heat, moisture and warms to room temperature. Within 70 seconds, after cooling the
ceramic gearbox, the fan switches back to air extraction mode and the cycle resumes. In this mode,
in the case of the installation of two fans, each runs in its own direction. One supplies air to the
room while the other discharges the used air.
Air outlet
Air supply
CYCLE I
CYCLE II

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7MOUNTING AND SET-UP
7.1 Installation of the control panel with LCD display
1. Prerpare wall openning, lay required wires and
cables to the installation place of the control panel
and install the mounting box for wall flush mounting.
The mounting box is included in the delivery set
2. Unfasten gently the latches on the lower part of
the control panel using a screwdriver and disconnect
the front part from the back side. Do not disconnect
the connectors on the circuit board in the casing.
Attention!
The appliance should not be installed in a space where
curtains and the like objects obstate air flow!
Do not use a damaged control panel!
Do not install the control panel on an unequal surface!
Do not use excessive forces when screwing, don't damage the device!
Read the users manual before installing the unit

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3. Connect the wires to the terminal blocks on the
back side of the control panel in compliance with
external wiring diagrams. Fix the back side of the
control panel on the mounting box through the
fastening holes with supplied screws.
4. Press the control panel to the frame to click to fix
it with latches.
7.2 Ventilator mounting
Read the users manual before installing the unit
Do not block the air duct of the installed unit with dust accumulating materials, such as
curtains, cloth shutters, etc. As it prevents air circulation in the room.

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1. Prepare core holes in the outer wall
Make one or two holes in the exterior wall according to the configuration of the ventilation system. For
efficient ventilation, the locations of ventilation systems must be as far apart as possible. When preparing
the holes, it is recommended to also prepare places for laying the electrical cable and other necessary
cables in the wall. The size of the hole and the minimum distance to the surface (eg wall, ceiling or window)
and the minimum distance between the devices are shown below.
2. Measure the air ducts of the required length
Measure the wall thickness B
The required air tube length is calculated as L = B + A.
A means the part of the air tube from the outside that is required for
installation of an external ventilation cover.
Distance A is given in the instructions for installing the external ventilation cover.
Cut the air tube to length L.
3. Insert the sound absorbing roll in the air duct
Before inserting the cover, adjust its length according to the dimensions of the cartridge, indoor unit, and
vent. Insert the cartridge into the air hose during adjustment and close it
With outer cover. Roll up the sound-absorbing liner to fit the diameter of the air tube so that the layer of
protective paper is on the outside. Insert the sound-absorbing liner into the air tube
towards the end of the cartridge. Do not remove the paper layers!

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Mark the point 1 on the sound absorbing mat on the level of the air duct edge. Starting from the point 1
draw a line for 50 mm (2”) and mark the line 2. Cut out the excessive part of the sound absorbing mat.
Insert the adjusted sound absorbing roll in the air duct. Do not use any adhesives for fixtation. Below on the
left is shown ventilator with outer grille and on the right ventilator with outer hood (optionally)
4. Install the air duct in the wall
Install the air hose with a minimum slope of 3 mm down to
exterior walls with polystyrene wedges. Fill in the blanks with honey
opening and air tube with mounting foam.
5. Cable mounting
Route the cable through the cable opening and secure the rear of the indoor unit. Insert the cartridge into
the air tube. Disconnect the connector on the cartridge wire and connect the wires from the control panel
to the steam section according to the wiring diagram on page 12. Connect the terminal parts.

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6. Mount the front panel of the indoor unit and fix the outer ventilation hood
Optional version with corner element for exhaust to the edge of the window (surcharge NP).

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7.3 Installing the front panel
Front panel dimensions
MODEL
DIMENSIONS [mm]
PICO 50+
ØD
ØD1
A
A1
B
H
H1
106
164
212
160
60
260
160
Installing the front panel
1. Insert the pipe from the inside so that it
extends outward on the outside surface of the
wall. Cut off the excess pipe with a saw or other
suitable tool.
2. Mark the mounting holes for the cover and drill 4
holes, 50 mm deep, to fit the plastic inserts (6x40). Use
the back wall of the cover for easier marking.

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3. Insert the supplied 6x40 plastic inserts into
the holes. Remove the outer cover to allow
access to the mounting holes. Pull the front
cover down towards you.
4. To install an external bracket with a diameter of 160
mm, remove the cover on the rear wall.
5. Attach the rear of the bracket to the wall with
the supplied 4x40 screws.
6. Install the cover on the bracket.

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7.4 Connection to power mains
The fan is designed for connection to a single-phase mains voltage of 230V / 50 (60) Hz.
For electrical installations, use insulated permanent heat-resistant conductors (cables, wires) with a minimum wire cross-
section of 0.5 - 0.75 mm2 via an external circuit breaker mounted on the input power. The tripping current of the circuit-
breaker must be selected according to the current consumption of the fan (see table on page 5). The cross-sectional value of
the conductor must be selected according to the type of wire, the maximum permissible heating temperature, insulation,
length and method of installation.
The choice of signal cable must be based on the following criteria:
•• Always use shielded cables.
•• The cross section of the wire depends on the length and is selected according to the table below
Cable length [m]
Minimum wire cross section in the cable [mm2]
< 5
0.25
< 10
0.5
< 15
0.75
< 30
1.5
•Select the signal cable in accordance with the relevant electrical norms and standards.
•Connect the shield of the signal cable to the "-" terminals of the control panel and the fan. Use
only copper wires for all electrical wiring!
•The electrical connections of the ventilation system must be made in accordance with the wiring
diagrams.
Switch off before any work with the appliance.
The appliance must be connected to the electrical network by a qualified electrician. The
electrical parameters of the device can be found at manufacturer's labels.
Any modification of the internal circuit is prohibited it will revoke the warranty.

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7.5 Wiring diagram for the ventilator with control panel with LCD display
Ventilation system management
The ventilation system is controlled by a control panel.
You can use the control panel to change the following parameters:
•ventilator speed level: low, medium, high
Mode of operation - regeneration or ventilation
•operation of the ventilation system on the basis of a timer, which enables the following operation:
4 hours at high speed or 8 hours at low speed.
The display shows the following parameters:
•current speed
•current mode of operation
•timer-based operation status (ON / OFF)
•filter replacement / service required according to filter timer (factory setting 90 days)
•Switch off the ventilation system in the event of a motor failure
If the ventilation system is switched off, the set parameters are stored in the permanent memory of the
control panel.