Vents OKW User manual

OKW
OKW1
OKF
OKF1
Duct coolers
USER'S MANUAL

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OKW(1)/OKF(1)
www.ventilation-system.com
CONTENTS
Safety requirements..................................................................................................................................................................... 3
Purpose................................................................................................................................................................................................ 4
Delivery set........................................................................................................................................................................................ 4
Designation key.............................................................................................................................................................................. 4
Technical data.................................................................................................................................................................................. 4
Design and operating principle ........................................................................................................................................... 9
Mounting and set-up.................................................................................................................................................................. 10
Technical maintenance.............................................................................................................................................................. 11
Troubleshooting............................................................................................................................................................................. 12
Storage and transportation regulations.......................................................................................................................... 12
Manufacturer’s warranty........................................................................................................................................................... 13
Certificate of acceptance.......................................................................................................................................................... 15
Seller information.......................................................................................................................................................................... 15
Installation certificate.................................................................................................................................................................. 15
Warranty card................................................................................................................................................................................... 15
This user’s manual is a main operating document intended for technical, maintenance, and operating staff.
The manual contains information about purpose, technical details, operating principle, design, and installation of the OKW(1)/OKF(1) unit
and all its modifications.
Technical and maintenance staff must have theoretical and practical training in the field of ventilation systems and should be able to
work in accordance with workplace safety rules as well as construction norms and standards applicable in the territory of the country.

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THE PRODUCT MUST BE DISPOSED SEPARATELY AT THE END OF ITS SERVICE LIFE.
DO NOT DISPOSE THE UNIT AS UNSORTED DOMESTIC WASTE.
SAFETY REQUIREMENTS
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.
Check the unit for any visible damages of the casing before starting installation. The casing
internals must be free of any foreign objects.
While mounting the unit, avoid compression of the casing!
Misuse of the unit and any unauthorized modifications are not allowed.
Do not expose the unit to adverse atmospheric agents (rain, sun, etc.).
Transported air must not contain any dust or other solid impurities, sticky substances, or fibrous
materials.
Do not use the unit in a hazardous or explosive environment containing spirits, gasoline,
insecticides, etc.
Do not sit on the unit and do not put objects on it.
The information in this user’s manual was correct at the time of the document’s preparation. The
Company reserves the right to modify the technical characteristics, design, or configuration of its
products at any time in order to incorporate the latest technological developments.

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OKW(1)/OKF(1)
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DELIVERY SET
DESIGNATION KEY
PURPOSE
Name Number
Duct cooler 1 item
User’s manual 1 item
Packing box 1 item
    3
Number of cooling coil rows
Flange dimensions [width x height], mm
Modication
_ - standard;
1 - simplied
Cooler type
W - water cooler
F - direct expansion cooler
Designation key of the cooler
OK - duct cooler
TECHNICAL DATA
Each cooler is subjected to a pressure and a tightness test.
The cooler design is constantly being improved, so some models can slightly differ from those ones described in this manual.
The duct coolers are designed for supply air cooling in supply or air handling units integrated into rectangular ventilation systems.
The cooler is a component part and is not designed for independent 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).
Duct water cooler OKW (OKW1):
Maximum operating pressure: 1.5 MPa (15 bar).
Direct expansion cooler OKF (OKF1):
Maximum operating pressure: 2.8 MPa (28 bar).

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W
B3
H
H1
H2
H3
B
B1
B2
ø9
80 113
L
129
425
385
H4
K
K
8 holes
Model Dimensions, mm
B B1 В2 B3 H H1 H2 H3 H4 L K Weight [kg]
OKW 400х200-3 400 420 440 470 200 220 240 295 124 56 G 3/4’’ 10,4
OKW 500х250-3 500 520 540 570 250 270 290 345 188 45 G 3/4’’ 12,8
OKW 500х300-3 500 520 540 570 300 320 340 395 252 56 G 3/4’’ 14,3
OKW 600х300-3 600 620 640 670 300 320 340 395 252 56 G 3/4’’ 16
OKW 600х350-3 600 620 640 670 350 370 390 445 268 56 G 3/4’’ 17,7
OKW 700х400-3 700 720 740 770 400 420 440 495 314 56 G 3/4’’ 21,9
OKW 800х500-3 800 820 840 870 500 520 540 595 442 56 G 3/4’’ 26,9
OKW 900х500-3 900 920 940 970 500 520 540 595 442 56 G 3/4’’ 31,5
OKW 1000х500-3 1000 1020 1040 1070 500 520 540 595 442 56 G 1’’ 32

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OKW(1)/OKF(1)
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F
B3
H
H1
H2
H3
B
B1
B2
ø9
80 115
L
135
425
385
H4
øD1
øD2
8 holes
Model Dimensions, mm
B B1 В2 B3 H H1 H2 H3 H4 L D1 D2 Weight [kg]
OKF 400х200-3 400 420 440 470 200 220 240 295 103 44 12 22 10,4
OKF 500х250-3 500 520 540 570 250 270 290 345 155 44 12 22 12,8
OKF 500х300-3 500 520 540 570 300 320 340 395 210 33 12 22 14,3
OKF 600х300-3 600 620 640 670 300 320 340 395 199 44 18 28 16
OKF 600х350-3 600 620 640 670 350 370 390 445 199 44 18 28 17,7
OKF 700х400-3 700 720 740 770 400 420 440 495 224 44 22 28 21,9
OKF 800х500-3 800 820 840 870 500 520 540 595 340 44 22 28 26,9
OKF 900х500-3 900 920 940 970 500 520 540 595 340 44 22 28 31,5
OKF 1000х500-3 1000 1020 1040 1070 500 520 540 595 325 44 22 28 32

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W1
H
H1
H2
B
B1
B2 100
350
H4
L
H3
73
K
K
Bolt М8
8 item.
Model Dimensions, mm
B B1 B2 H H1 H2 H3 H4 L K Weight [kg]
OKW1 400х200-3 400 420 580 200 220 270 124 70 56 G 3/4” 13,5
OKW1 500х250-3 500 520 680 250 270 320 188 102 45 G 3/4” 14
OKW1 500х300-3 500 520 680 300 320 370 252 70 56 G 3/4” 15
OKW1 600х300-3 600 620 780 300 320 370 252 134 56 G 3/4” 16
OKW1 600х350-3 600 620 780 350 370 420 268 229 56 G 3/4” 17
OKW1 700х400-3 700 720 880 400 420 470 314 196 56 G 3/4” 19
OKW1 800х500-3 800 820 980 500 520 570 442 324 56 G 3/4” 22
OKW1 900х500-3 900 920 1080 500 520 570 442 324 56 G 3/4” 23
OKW1 1000х500-3 1000 1020 1180 500 520 570 442 324 56 G 1” 24

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OKW(1)/OKF(1)
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F1
H
H1
H2
B
B1
B2 102
350
L
H3
79
Bolt М8
8 item
Model Dimensions, mm
B B1 B2 H H1 H2 H3 L D1 D2 Weight [kg]
OKF1 400х200-3 400 420 580 200 220 270 103 44 12 22 13,5
OKF1 500х250-3 500 520 680 250 270 320 155 44 12 22 14
OKF1 500х300-3 500 520 680 300 320 370 210 33 12 22 15
OKF1 600х300-3 600 620 780 300 320 370 199 44 18 28 16
OKF1 600х350-3 600 620 780 350 370 420 199 44 18 28 17
OKF1 700х400-3 700 720 880 400 420 470 224 44 22 28 19
OKF1 800х500-3 800 820 980 500 520 570 340 44 22 28 22
OKF1 900х500-3 900 920 1080 500 520 570 340 44 22 28 23
OKF1 1000х500-3 1000 1020 1180 500 520 570 325 44 22 28 24

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DESIGN AND OPERATING PRINCIPLE
The cooler casing is made of polymer coated steel, the tube collectors are 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 cooling coils are available in 3 rows modification.
The internal operating medium of the OKF (OKF1) duct cooler is an evaporating refrigerant, i.e. R123, R134a, R152a, R404a, R407c, R410a,
R507, R12, R22.
The internal operating medium of the OKW (OKW1) duct cooler is water or antifreeze.
If necessary change the service side by turning the cooling coil through 180°. The OKF1 and OKW1 do not have this option. By default
the service side is on the right in the direction of the air flow.
Service side change
To attain the maximum cooling capacity the cooler must be connected on counter-flow basis
Inlet Outlet
Counterow connection Direct ow connection
Inlet
Outlet

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MOUNTING AND SETUP
The cooler is connected to the air duct with a flange connection
Connection of the cooler to the air duct
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, the drain pan and the drain pipe.
• The cooler can be installed only horizontally 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 flow stabilization.
Prior to starting mounting check the tube, plates and the tube collector condition. Flanges of the system components are mounted with
galvanized bolts and M8 nuts.
For OKW1 and OKF1 the flanges of the system components are mounted with galvanized bolts and M8 nuts, pre-installed in the cooler.
Prior to mounting remove the bolts and after the mounting screw them back.
Prior to starting operation and after a long downtime fill the U-trap with water. Negative pressure coolers can be equipped with a U-trap
and a ball valve. Such U-trap must not be filled with water.