Vents OKF User manual
OKF, OKW
DUCT COOLERS
USER MANUAL
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CONTENT
Introduction
Use
Delivery set
Main technical data
Designation key structure
Design and operating logic
Main parameters and dimensions
Mounting
Condensate drainage
Maintenance
Safety precautions
Storage and transportation rules
Manufacturer’s warranty
Acceptance certicate
Warranty card
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OKW, OKF
The present user manual contains technical description, operation and mounting instructions, technical
data for the duct coolers, hereinafter referred as the coolers.
INTRODUCTION
USE
DELIVERY SET
The coolers are available in two types: direct expansion cooler (OKF) or water cooler (OKW).
Duct water cooler OKW:
Maximum operating pressure: 1.5 Map (15 bar).
Direct evaporation cooler OKF:
Maximum operating pressure: 2.8 Map (28 bar).
All the coolers are proved for pressure and leakages. The coolers are designed for operation in the cold and
moderate climatic zones.
The duct coolers are designed for supply air cooling in supply or air handling units integrated into
rectangular ventilation systems.
Flange dimensions [width x height], mm
Number of cooling coil rows
Cooler type:
W - water, F - direct evaporation
OK - 3
DESIGNATION KEY STRUCTURE
duct cooler - 1 item;
user manual - 1 item;
packing box - 1 item.
MAIN TECHNICAL DATA
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The cooler casing is made of polymer coated steel, the tubular manifold is made of copper and the heat
exchanger surface is made of aluminium plates. The cooler casing has a dismountable design that provides
easy access to the heat exchanger and the droplet separator. The coolers are equipped with 3-raw coils.
The internal operating medium of the OKF cooler is a direct evaporation refrigerant, i.e. R123, R134a,
R152a, R404a, R407c, R410a, R507, R12, R22.
The internal operating medium of the OKW cooler is water or antifreeze.
In case of need to change the service side turn the cooling coils by 180°, g. 1.The economy modication
of the product does not have this option.
DESIGN AND OPERATING LOGIC
Fig. 1
Fig. 2
Changing of service side
To attain the most ecient cooling capacity connect the cooler on counter-ow basis, g. 2.
Counter-ow connection Direct-ow connection
Inlet Outlet Outlet Inlet
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OKW, OKF
Тип
Dimensions, mm
B B1 В2 B3 H H1 H2 H3 H4 L L1 L2 K
OKW 400х200-3 400 420 438 528 200 220 238 70 273 395 176 43 G 3/4’’
OKW 500х250-3 500 520 538 628 250 270 288 120 323 395 176 43 G 3/4’’
OKW 500х300-3 500 520 538 628 300 320 338 175 373 395 176 43 G 3/4’’
OKW 600х300-3 600 620 638 728 300 320 338 170 373 395 176 43 G 3/4’’
OKW 600х350-3 600 620 638 728 350 370 388 220 423 395 176 43 G 3/4’’
OKW 700х400-3 700 720 738 828 400 420 438 250 423 395 170 55 G 1’’
OKW 800х500-3 800 820 838 928 500 520 538 340 573 395 170 55 G 1’’
OKW 900х500-3 900 920 938 1028 500 520 538 350 573 395 170 55 G 1’’
OKW 1000х500-3 1000 1020 1038 1128 500 520 538 350 573 395 170 55 G 1’’
Main dimensions of the OKW cooler with rectangular connection to air duct are shown in g. 3 and
in table 1.
Table. 1
Fig. 3
MAIN PARAMETERS AND DIMENSIONS
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Тип
Dimensions, mm
D1 D2 B B1 В2 B3 H H1 H2 H3 H4 L L1 L2
OKF 400х200-3 12 22 400 420 438 528 200 220 238 70 273 395 165 60
OKF 500х250-3 12 22 500 520 538 628 250 270 288 120 323 395 165 60
OKF 500х300-3 12 22 500 520 538 628 300 320 338 175 373 395 165 60
OKF 600х300-3 18 28 600 620 638 728 300 320 338 170 373 395 165 60
OKF 600х350-3 18 28 600 620 638 728 350 370 388 220 423 395 165 60
OKF 700х400-3 22 28 700 720 738 858 400 420 438 250 423 395 160 75
OKF 800х500-3 22 28 800 820 838 958 500 520 538 340 573 395 160 75
OKF 900х500-3 22 28 900 920 938 1058 500 520 538 350 573 395 160 75
OKF 1000х500-3 22 28 1000 1020 1038 1158 500 520 538 350 573 395 160 75
Table. 2
Fig. 4
Main dimensions of the OKF cooler with rectangular connection to air duct are shown in g. 4 and
in table 2.
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OKW, OKF
The cooler is connected to the air duct with a ange connection, g. 5.
Outdoor installation of the cooler is allowed only if the refrigerant is an antifreeze (ethylene glycol
solution). During mounting consider the operating characteristics of the mixing unit actuator.
While mounting the cooler provide quick and easy dismantling of the heat exchanger, drain pan and
the drain pipe.
The cooler is designed for horizontal installation only to enable condensate drainage.
While mounting the cooler provide enough access for servicing and repair operations.
The duct cooler may be installed upstream and downstream of the ventilation unit. If the cooler
is installed downstream of the fan, provide at least 1-1.5 m air duct between the cooler and the fan for air
ow stabilization.
Prior to starting mounting check the tube, plates and tubular manifold condition. Flanges of the system
components are mounted with galvanized bolts and M8 nuts.
Prior to starting operation and after a long downtime ll the U-trap with water. The supply / air handling
unit may be equipped with a U-trap and a ball valve, especially for the units with negative pressure. This
U-trap must not be lled with water.
Fig. 5
Connection of the cooler to air duct.
MOUNTING AND SETUP
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A drain pan with a drain pipe connected to a sewage system is designed for condensate drainage (g.6).
While selecting the U-trap dimension type consider the total fan pressure. The U-trap must ensure correct
operation of the ventilation system.
Maintenance means regular preventive measures during operations.
The aluminium ribs and the droplet separator must be cleaned at least once per year by vacuum cleaner
or pressure water ushing. The cleaning periodicity depends on air pollution degree and maintenance
quality of the lters and equipment.
If the internal environment is clean enough, the cleaning may be performed more seldom, as required.
The U-trap maintenance includes regular control of water level and sucient U-trap clearance.
Warning! While cleaning the ribbed battery be careful not to damage the ribbed surface.
CONDENSATE DRAINAGE
H - U-trap height
K - drainage tube height
P - total fan pressure
H, мм К, мм Р, Па
100 55 600
200 105 1100
260 140 1400
Fig. 6
MAINTENANCE
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OKW, OKF
While installing and operating the cooler consider the requirements of the present user manual, acting
construction norms and standards. Prior to turning the cooler on make sure that the air duct is not damaged
and does not contain any foreign objects inside. Make sure of no leakages in the connection points. «
The cooler must be connected to power mains by a qualied electrical engineer, duly authorized for
such operations. The cooled air must not contain solid, brous, sticky, aggressive substances that may
provoke aluminium, cooper and zinc corrosion.
Store the product in the original packing in a ventilated room at the temperatures between -10°C and
+40°C and the relative humidity not more than 80% at the temperature +25°C.
The storage environment must not contain vapours or substances that may provoke metal corrosion
and damage insulation and the connection point tightness.
Transportation with any vehicles is allowed provided that the products are protected against mechanical
and weather damage. Avoid any mechanical shocks and strokes during handling operations.
The coolers are manufactured at «Ventilation Systems» JSC.
While buying the present product the Customer agrees to accept the following warranty conditions:
The manufacturer guarantees normal performance of the product for 24 months from the date of
resale, subject to the compliance with transport, storage, mounting and operation rules. In case of no
conrmation of the sales date the guarantee period is calculated from the manufacturing date.
All the units and components belonging to the faulty product and replaced within the warranty period
shall be covered by the previous warranty period and general warranty conditions. Thus the warranty
period is neither extended nor renewed for the replaced components or the product.
In case of failure due to faulty equipment during the warranty period the consumer has the right for the
product replacements. Replacements are oered by the Seller.
The accessories operated together with the product, both included and not included into the delivery
list as well as other equipment operating jointly with the product are not covered by the warranty.
The company is not responsible for compatibility of their goods with other producers’goods.
The warranty covers the manufacturing defects only. All the defects and faults resulting from gross
mechanical eect during operation process or natural wear-and-tear are not covered by the warranty
conditions.
The faults caused by violence of operation, servicing and maintenance guidelines either by Customer or
third parties or caused by unauthorized design modications shall not be covered by warranty.
NO LIABILITY FOR THE RELATED DAMAGES:
The manufacturer is not responsible for any mechanical or physical damages resulting from the manual
requirements violence, the product misuse or gross mechanical eect.
Indirect damages such as re-installation or re-connection of the product, direct or indirect losses related
to the product replacement shall not be indemnied.
Mounting/dismantling, connection/disconnection and adjustment of the product shall not be covered
by the warranty.
The contractor for mounting, electric mounting and adjustment works shall be responsible for quality
and warranty of these works. In any case the indemnity amount shall not exceed the actually paid value for
the defective unit price.
SAFETY PRECAUTIONS
STORAGE AND TRANSPORTATION RULES
MANUFACTURER’S WARRANTY
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ACCEPTANCE CERTIFICATE
is recognized as serviceable.
Approval mark Manufacturing date ___________________________
Sold by
name of retail company, stamp of the shop _______________________________________________
___________________________________________________________________________________
Date of sale _____________________________
OKV (OKF) duct cooler
WARRANTY CARD
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OKW, OKF
2012 V63ENG-02
This manual suits for next models
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