CW/HW cooling and heating coils - for cooling and heating of the supply air

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.

VEX4000-HW-CW
VEX4000 CW/HW

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.

Tel	+45 6566 1234
E-mail:	export@exhausto.dk

CW Cooling Coil/ HW Heating Coil

Construction

Connections - generally for all coils

Duct-mounted cooling/heating coils

Built-in cooling/heating coils

Section with a built-in coil

Dimensions table

Section with two built-in coils

Dimensions table

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Calculation programs

VEX Summary