BSK SCHOLAR 500 Manuale utente
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BSK SCHOLAR 500/700 HEAT RECOVERY UNIT
MONTAGE, SERVICE AND USAGE MANUAL
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PREFACE
Thank you for choosing the BSK Heat Recovery Units. The purpose of this document is
to inform the users of the BSK Heat Recovery Unit about the parts and features of the
device, to give information about operation and maintenance.
BSK heat recovery unit ensures high indoor air quality and energy savings at the same
time. Heat transfer between the fresh air and the exhaust air is achieved by means of a
plastic plate, counter-flow heat exchanger. It ensures high performance and high thermal
conductivity, and efficient heat transfer between warm and cold air. The devices are
designed to be easy to assemble, use and maintain. They work quietly thanks to the low
noise self-motorized fans and noise isolation inside the device. Extensive controls, and
accessory options give users the ability to custom fit their needs perfectly.
WARRANTY DETAILS
BSK guarantees that the heat recovery units it produced are of good quality. It
ensures repair and exchange during the warranty period for faults which could manifest
from structural weld flaws, material defects, or manufacturing problems as well as fans,
damper system or electronics. BSK does not accept any liability for damage caused by
improper and irresponsible use conditions.
Failings related to all mechanical and electrical components such as fans, motors, and
circuitry, caused by defective modules or incorrect assembly are covered by warranty for 2
years, starting from the date of invoice to the customer.
If repairs or modifications to parts have been made without the written permission of
BSK or the authorized service, the device will not be covered by the warranty. Repaired
device malfunctions, and changed defective parts handled by means of the technical staff
appointed by BSK or an authorized service will not void the warranty. Also the replacement
of the G4 / F7 cassette filters contained in the device, made by BSK, will be excluded from
this scope.
BSK warranty includes the replacement spare parts for fans, damper motor and
system, and electronic components. It does not include the wages of service personnel,
operation and / or maintenance costs. If the defect is within the coverage of the warranty,
all transportation and exchange costs of the device and the technical staff appointment shall
be borne by the authorized service, otherwise these costs must be met by the customer.
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INDEX
DIMENSIONS, POSITIONING AND CLEARANCES
HEAT RECOVERY UNIT’S PARTS
1. BODY
2. AIR CONNECTIONS
3. ELECTRICAL CONNECTIONS
A. Power Input
B. Boost Input
C. Modbus Port
4. DIGITAL CONTROL PANEL
5. DRAINAGE PIPE
6. SERVICE DOOR
7. FILTERS (A-B-C)
8. HEAT EXCHANGER
9. FANS
10.AUTOMATIC DAMPERS
A. Air Damper
B. By-pass Damper
•Free-cooling Mode
11.ELECTRIC CONTROL BOX
12.CO2SENSOR
13.SILENCERS
GENERAL WARNINGS
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BSK SCHOLAR 500/700 DIMENSIONS
(mm)
A
B
C
D
E
F
G
H
I
J
SCHOLAR 500
1650
575
780
160
130
SCHOLAR 700
625
780
180
130
POSITIONING AND CLEARANCES
•For easy access and maintenance leave at least 50mm from the sides and 100mm from
the back when installing near walls.
•Leave at least 500mm gap from the ceiling to the top of the device. Do not obstruct the
air intake grid on the top by any means.
•Leave at least 1m of free space in front of the device. Do not obstruct the air outlet grid
on the bottom by any means.
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HEAT RECOVERY UNIT’S PARTS
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1. Body
The body of the SCHOLAR series heat recovery units is made of double walled galvanized
sheet metal filled with rock wool insulation.
Both inside and outside of the body is painted with electrostatic powder paint.
2. Air Connections
Air connection pipes have a round cross-section. The duct connectors are sealed with double
lipped rubber joints. All connections should be made with according diameter of the device
model (Ø160 or Ø180 mm).
The device needs 2 air connections. These are indicated on the device near air connection
pipes with stickers. The other air ways (fresh air out and exhaust air in) is located directly on
the body of the device and no duct connection is needed.
The air connections can be changed from back to top, depending on the user’s preferences.
Simply remove the screws shown above and relocate the spigots in desired position.
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3. Electrical Connections
SCHOLAR units are designed to be plug and play, and all the electrical connections come
with pre-connected sockets for this purpose. You do not need to wire connections to the
control board, just plug the power cable to the back of the device.
A. Power Input
This is the main power source of the device. The socket is equipped with and on/off
switch. “I” is the ON and “O” is the OFF position.
The switch must be on OFF position before all the connections to the device is made.
The socket have a 250V 10A glass fuse.
B. Boost Input
An 220V signal or switch can be connected to the device via this port. When the
connected switch is turned on, the device will enter Boost Mode to help with the
ventilation.
Users can change the aspirator and ventilator fan levels for Boost Mode to best suit their
needs. To change the boost levels press ▲and ▼together while the device is turned
off from the control panel (BSK logo is on the screen). Select “Aspirator Boost” from the
menu and set the ASP and VNT levels according to your needs.
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C. Modbus Port
The device can be connected to a building management system (BMS) via the ModBus
protocol. The A and B pins of the ModBus port is shown below.
A
B
4. Digital Control Panel
Digital control panel of the device is used to control the various features of the device. For
more information on how to use the digital control panel please refer to the Digital Control
Panel User Guide.
5. Drainage Pipes
There is a collector tray made of galvanized sheet metal, to collect the condensing water
droplets which can be formed inside the device. The drainage pipe has been taken out to be
able to connect to the waste water system.
The drainage pipes must be connected to the waste water line before the device is started.
The connection is made with a Ø19 mm pipe.
The drain must never be led to the gutter directly, since it can cause water damage when it
freezes outside
The connection of the drain must always have a water lock to prevent smells from the waste
water line.
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6. Service Door
The units have service doors that can be opened and sealed with hexagonal screws for
maintenance and replacement.
To open the cover, unscrew all the bolts on the cover like shown below, with an M5 Allen
wrench, and take off the cover.
7. Cassette filters
There are 2 filters (G4 and F7) after the fresh air and 1 (M5) after the extract air inlet which
filters the air going into the device to protect the heat exchanger and other commodities
from dust and abrasive particles.
7A –M5 Filter
7B –G4 Filter
7C –F7 Filter
All 3 filters are equipped with a pressure switch, which will notify the user when the
respective filter is full. The warning message can be seen on the control panel.
To change the filters, open the service cover. Pull the filter from its slot, put the new filter
back in and then tightly screw the service door back.
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8. Heat exchanger
Plastic plated, high efficiency, hexagonal counter flow heat exchangers are used in all of the
units.
To clean the heat exchanger, open the service cover and simply pull the heat exchanger from
its slot. After removing the heat exchanger, wash it with water and dry it out before putting
it back in. Tightly screw the service door back. Clean the heat exchanger once every 6 –12
months depending on the usage.
9. Fans
All devices utilize self-motorized, silent, monophase (220 V) and variable speed-controlled EC
fans.
To change the speed of the fans from the digital control panel, press MODE/OK on the main
screen to select ASP or VNT. Then press ▲to increase or ▼to decrease the fan speed. For
more information refer to the digital control panel guide.
10. Automatic dampers
The device utilizes 3 automatic dampers.
A. Air dampers
These dampers automatically open when the device is started and close when it is
turned off from the control panel. They prevent air draft to the device from the outside
when the device is not running.
B. By-pass damper
At the back of the device, inside, there is a channel which by-passes the heat exchanger.
By-pass damper opens or closes this channel along with the heat exchanger. (When the
canal is closed heat exchanger is open and vice versa).
By-pass damper is used to control the flow of air to the by-pass channel. This is called the
Free-cooling mode, as it allows direct intake of the outside air, without conditioning it in
the heat exchanger.
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