CW Cooling Coil/ HW Heating Coil

CW HW half section

CW cooling coil / HW heating coil - here shown as half section. Heating and cooling coils used in the VEX4000 series have the same construction and are therefore mentioned together here.

Function and application

Heating coils are usually used for heating the supply air where the temperature is too low after the heat exchanger.

The water heating and cooling coils work by the supply air passing over the heating elements in the coil, which are heated or cooled down with water. The supply air absorbs heat/cold from the elements which

in this way achieve a higher or lower temperature. The water in the two coils is led away through pipe penetrations on the user side of the unit.


Construction and connection

Construction

The coils are made from copper piping with aluminium fins integrated in steel panel frames. The number of pipes and circuits depends on the applicable heating or cooling requirement.

In the units, the coils are mounted on guide rails for pulling out, inspection and maintenance. Pipe connections and panels must be dismounted prior to pulling out.

The cooling function is constructed with a corrosion-resistant base tray under the cooling coil, and contains space for the droplet separator, which should be installed in the case of water cooling and air speeds greater than 2.5 m/s. 

The base tray is designed with a fall to the drain, in order to avoid accumulating stagnant water. The drains have smooth piping and exit the panel on the operating side, where a water trap must be fitted.


Connections - generally for all coils

It is important to ensure correct flow through the coils. For this reason, the coils should/must be dimensioned for the actual circumstances, such as airflow, temperature settings for the water in the coil and the desired delivery temperature of the coil.


Technical data, duct-mounted cooling/heating coils (HW/CW)

Duct-mounted cooling/heating coils

Cooling/heating coils for VEX4010   HW1  HW2  CW2
 Test pressure 3000 kPa 3000 kPa 3000 kPa
 Max. operating pressure 1600 kPa 1600 kPa 1600 kPa
 Connection dimension 2 x Ø22 mm 2 x Ø22 mm
2 x Ø35 mm
 Outlet from drip tray none none DN20 (¾")
 Fin spacing 1.8 mm 1.8 mm 2.5 mm
 Weight (without fluid) 3 kg 6 kg 11 kg
 Internal volume 1.3 l 1.3 l 4.9 l
Cooling/heating coils for VEX4020   HW1  HW2  CW2
 Test pressure 3000 kPa 3000 kPa 3000 kPa
 Max. operating pressure 1600 kPa 1600 kPa 1600 kPa
 Connection dimension 2 x Ø22 mm
2 x Ø22 mm
2 x Ø35 mm
 Outlet from drip tray none none DN20 (¾")
 Fin spacing 1.8 mm 1.8 mm 2.5 mm
 Weight (without fluid) 4 kg 7 kg 14 kg
 Internal volume 1.6 l 2.9 l 6.0 l
Cooling/heating coils for VEX4030   HW1  HW2  CW2
 Test pressure 3000 kPa 3000 kPa 3000 kPa
 Max. operating pressure 1600 kPa 1600 kPa 1600 kPa
 Connection dimension 2 x Ø22 mm
2 x Ø28 mm
2 x Ø42 mm
 Outlet from drip tray none none DN20 (¾")
 Fin spacing 1.8 mm 1.8 mm 2.5 mm
 Weight (without fluid) 10 kg 20 kg 38 kg
 Internal volume 2.5 l 5.0 l 8.9 l
Cooling/heating coils for VEX4040   HW1  HW2  CW2
 Test pressure 3000 kPa 3000 kPa 3000 kPa
 Max. operating pressure 1600 kPa 1600 kPa 1600 kPa
 Connection dimension 2 x Ø28 mm
2 x Ø35 mm
2 x Ø42 mm
 Outlet from drip tray none none DN20 (¾")
 Fin spacing 1.8 mm 1.8 mm 2.5 mm
 Weight (without fluid) 42.4 kg 42.4 kg  51.2 kg
 Internal volume 3.2 l 5.4 l 10.2 l
Cooling/heating coils for VEX4050   HW1  HW2  CW2
 Test pressure 3000 kPa 3000 kPa 3000 kPa
 Max. operating pressure 1600 kPa 1600 kPa 1600 kPa
 Connection dimension 2 x Ø35 mm
2 x Ø35 mm
2 x Ø54 mm
 Outlet from drip tray none none DN20 (¾")
 Fin spacing 1.8 mm 1.8 mm 2.5 mm
 Weight (without fluid) 44.9 kg 44.9 kg  58.6 kg
 Internal volume 4.0 l 6.7 l 11.2 l
Cooling/heating coils for VEX4060   HW1  HW2  CW2
 Test pressure 3000 kPa 3000 kPa 3000 kPa
 Max. operating pressure 1600 kPa 1600 kPa 1600 kPa
 Connection dimension 2 x Ø35 mm
2 x Ø35 mm
2 x Ø70 mm
 Outlet from drip tray none none DN20 (¾")
 Fin spacing 1.8 mm 1.8 mm 2.5 mm
 Weight (without fluid) 10 kg 20 kg 38 kg
 Internal volume 4.9 l 8.5 l 19.7 l
Cooling/heating coils for VEX4070   HW1  HW2  CW2
 Test pressure 3000 kPa 3000 kPa 3000 kPa
 Max. operating pressure 1600 kPa 1600 kPa 1600 kPa
 Connection dimension 2 x Ø35 mm 2 x Ø42 mm 2 x Ø70 mm
 Outlet from drip tray none none DN20 (¾")
 Fin spacing 1.8 mm 1.8 mm 2.5 mm
 Weight (without fluid) 11 kg 23 kg 39 kg
 Internal volume 5.4 l 10.0 l 21.5 l
Cooling/heating coils for VEX4080   HW1  HW2  CW2
 Test pressure 3000 kPa 3000 kPa 3000 kPa
 Max. operating pressure 1600 kPa 1600 kPa 1600 kPa
 Connection dimension 2 x Ø42 mm 2 x Ø42 mm 2 x Ø80 mm
 Outlet from drip tray none none DN20 (¾")
 Fin spacing 1.8 mm 1.8 mm 2.5 mm
 Weight (without fluid) 14 kg 28 kg 54 kg
 Internal volume 7.1 l 12.1 l 27.7 l
Cooling/heating coils for VEX4090   HW1  HW2  CW2
 Test pressure 3000 kPa 3000 kPa 3000 kPa
 Max. operating pressure 1600 kPa 1600 kPa 1600 kPa
 Connection dimension 2 x Ø54 mm 2 x Ø54 mm 2 x Ø102 mm
 Outlet from drip tray none none DN20 (¾")
 Fin spacing 1.8 mm 1.8 mm 2.5 mm
 Weight (without fluid) 17 kg 35 kg 66 kg
 Internal volume 10.2 l 16.3 l 39.2 l
Cooling/heating coils for VEX4100  HW1  HW2  CW2
 Test pressure 3000 kPa 3000 kPa 3000 kPa
 Max. operating pressure 1600 kPa 1600 kPa 1600 kPa
 Connection dimension 2 x Ø54 mm 2 x Ø54 mm 2 x Ø102 mm
 Outlet from drip tray none none DN20 (¾")
 Fin spacing 3.0 mm 1.8 mm 2.5 mm
 Weight (without fluid) 18 kg 45 kg 86 kg
 Internal volume 12.9 l 21.0 l 49.6 l

Technical data, built-in coils (HWC/CWC)

Built-in cooling/heating coils

Cooling/heating coils for VEX4010  HWC1  HWC2  CWC
 Test pressure 3000 kPa 3000 kPa 3000 kPa
 Max. operating pressure 1600 kPa 1600 kPa 1600 kPa
 Connection dimension 2 x Ø22 mm 2 x Ø22 mm 2 x Ø35 mm
 Outlet from drip tray  Ø32 mm Ø32 mm Ø32 mm
 Fin spacing 1.8 mm 1.8 mm 2.5 mm
 Internal volume 1.4 l 2.7 l 5.0 l
Cooling/heating coils for VEX4020  HWC1  HWC2  CWC
 Test pressure 3000 kPa 3000 kPa 3000 kPa
 Max. operating pressure 1600 kPa 1600 kPa 1600 kPa
 Connection dimension 2 x Ø22 mm 2 x Ø22 mm 2 x Ø35 mm
 Outlet from drip tray  Ø32 mm Ø32 mm Ø32 mm
 Fin spacing 1.8 mm 1.8 mm 2.5 mm
 Internal volume 1.7 l 3.3 l 6.2 l
Cooling/heating coils for VEX4030  HWC1  HWC2  CWC
 Test pressure 3000 kPa 3000 kPa 3000 kPa
 Max. operating pressure 1600 kPa 1600 kPa 1600 kPa
 Connection dimension 2 x Ø22 mm 2 x Ø28 mm 2 x Ø42 mm
 Outlet from drip tray  Ø32 mm Ø32 mm Ø32 mm
 Fin spacing 1.8 mm 1.8 mm 2.5 mm
 Internal volume 2.5 l 4.9 l 8.9 l
Cooling/heating coils for VEX4040  HWC1 HWC2  CWC
 Test pressure 3000 kPa 3000 kPa 3000 kPa
 Max. operating pressure 1600 kPa 1600 kPa 1600 kPa
 Connection dimension 2 x Ø28 mm 2 x Ø28 mm 2 x Ø54 mm
 Outlet from drip tray Ø32 mm Ø32 mm Ø32 mm
 Fin spacing 1.8 mm 1.8 mm 2.5 mm
 Internal volume 3.0 l 5.7 l 12.0 l
Cooling/heating coils for VEX4050  HWC1  HWC2  CWC
 Test pressure 3000 kPa 3000 kPa 3000 kPa
 Max. operating pressure 1600 kPa 1600 kPa 1600 kPa
 Connection dimension 2 x Ø28 mm 2 x Ø35 mm
2 x Ø54 mm
 Outlet from drip tray Ø32 mm Ø32 mm Ø32 mm
 Fin spacing 1.8 mm 1.8 mm 2.5 mm
 Internal volume 3.7 l 7.0 l 14.0 l
Cooling/heating coils for VEX4060  HWC1  HWC2  CWC
 Test pressure 3000 kPa 3000 kPa 3000 kPa
 Max. operating pressure 1600 kPa 1600 kPa 1600 kPa
 Connection dimension 2 x Ø35 mm 2 x Ø35 mm 2 x Ø70 mm
 Outlet from drip tray  Ø32 mm Ø32 mm Ø32 mm
 Fin spacing 1.8 mm 1.8 mm 2.5 mm
 Internal volume 5.3 l 9.3 l 20.2 l
Cooling/heating coils for VEX4070  HWC1  HWC2  CWC
 Test pressure 3000 kPa 3000 kPa 3000 kPa
 Max. operating pressure 1600 kPa 1600 kPa 1600 kPa
 Connection dimension 2 x Ø35 mm 2 x Ø42 mm 2 x Ø70 mm
 Outlet from drip tray  Ø32 mm Ø32 mm Ø32 mm
 Fin spacing 1.8 mm 1.8 mm 2.5 mm
 Internal volume 5.8 l 10.7 l 21.8 l
Cooling/heating coils for VEX4080  HWC1  HWC2  CWC
 Test pressure 3000 kPa 3000 kPa 3000 kPa
 Max. operating pressure 1600 kPa 1600 kPa 1600 kPa
 Connection dimension 2 x Ø42 mm 2 x Ø42 mm 2 x Ø80 mm
 Outlet from drip tray  Ø32 mm Ø32 mm Ø32 mm
 Fin spacing 1.8 mm 1.8 mm 2.5 mm
 Internal volume 7.6 l 13.1 l 28.5 l
Cooling/heating coils for VEX4090  HWC1  HWC2  CWC
 Test pressure 3000 kPa 3000 kPa 3000 kPa
 Max. operating pressure 1600 kPa 1600 kPa 1600 kPa
 Connection dimension 2 x Ø54 mm 2 x Ø54 mm 2 x Ø102 mm
 Outlet from drip tray  Ø32 mm Ø32 mm Ø32 mm
 Fin spacing 2.5 mm 1.8 mm 2.5 mm
 Internal volume  11.5 l 18.5 l 42.2 l
Cooling/heating coils for VEX4100  HWC1  HWC2  CWC
 Test pressure 3000 kPa 3000 kPa 3000 kPa
 Max. operating pressure 1600 kPa 1600 kPa 1600 kPa
 Connection dimension 2 x Ø70 mm 2 x Ø70 mm 2 x Ø120 mm
 Outlet from drip tray  Ø32 mm Ø32 mm Ø32 mm
 Fin spacing 3.0 mm 1.8 mm 2.5 mm
 Internal volume 17.4 l 26.3 l 51.8 l
Dimensions, dimensions table for section with a coil

Section with a built-in coil

Dimensions table

VEX4000 model ½ Height/Height  Length   Depth
VEX4010 [mm] 702/1309 480  1055
VEX4020 [mm]
702/1309 480 1275
VEX4030 [mm] 797/1499 480  1549
VEX4040 [mm]
847/1599 480  1630
VEX4050 [mm]
919/1744 480  1755
VEX4060 [mm]
1077/2069 480  1930
VEX4070 [mm]  1077/2069 480 2115
VEX4080 [mm]
1209/2494 480  2325
VEX4090 [mm]
1334/2744 480  2625
VEX4100 [mm]
1474/3024 480 2895

The indicated dimensions are the dimensions for the section - use EXselectPRO to get the correct dimensions for the whole air handling unit, including assembly fittings and seals.


Dimensions, dimensions table for section with two coils

Section with two built-in coils

Dimensions table

VEX4000 model ½ Height/Height  Length   Depth
VEX4010 [mm] 702/1309 1404  1055
VEX4020 [mm]
702/1309 1404 1275
VEX4030 [mm] 797/1499 1404  1549
VEX4040 [mm]
847/1599 1404  1630
VEX4050 [mm]
919/1744 1404  1755
VEX4060 [mm]
1077/2069 1404  1930
VEX4070 [mm]  1077/2069 1404 2115
VEX4080 [mm]
1209/2494 1404  2325
VEX4090 [mm]
1334/2744 1404 2625
VEX4100 [mm]
1474/3024 1404 2895

The indicated dimensions are the dimensions for the section - use EXselectPRO to get the correct dimensions for the whole air handling unit, including assembly fittings and seals.


Add all about the product series CW Cooling Coil/ HW Heating Coil

CONTACT US TODAY

Get free advice on ventilation products and system solutions


Export Requests:
EXHAUSTO Export
Odensevej 76
DK 5550 Langeskov

Tel +45 6566 1236
E-mail: export@exhausto.dk
Calculation_300W

Calculation programs

Use EXHAUSTO's free calculation programs for calculating ventilation plant and system solutions

Go to Calculation Programs
Vex overview

VEX Summary

Get a quick overview of our entire range of compact VEX air handling units with heat recovery.

View the VEX summary here