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Heat exchanger Type EL

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Electric air heater with plain stainless steel heating coil

Electric air heater with plain stainless steel heating coil

 

 

EL_img_01psd.png
EL_img_03psd.png

EL  

For the electric reheating of airflows in circular ducting


Circular electric air heater for reheating airflows, suitable for VAV terminal units TVR and mechanical self-powered CAV controllers RN and VFC

  • Outlet airflow temperature 50 °C max.
  • Plain heating coil, stainless steel 1.4301
  • Integral overheating protection with temperature monitor (auto reset) and thermal cut-out (manual reset)
  • For horizontal or vertical ducts
  • Suitable for circular ducts to EN 1506 or EN 13180
  • With lip seal
  • Protection level: IP 43
  • Casing leakage according to EN 15727, class C

General information

Application

  • Electric air heater for reheating airflows up to 50 °C in circular ducts
  • For VAV terminal units Type TVR and for CAV controllers Type RN or VFC



Nominal sizes

  • 100, 125, 160, 200, 250, 315, 400



Parts and characteristics

  • Ready-to-install air heater
  • Twofold overheating protection:
    • Temperature monitor with automatic reset
    • Thermal cut-out with manual reset
  • Connection terminals inside
  • Casing is ready for cable feedthrough; strain relief and cable gland (M20 or M25) to be provided by others



Construction features

  • Circular casing with rectangular switch cabinet
  • Spigot with lip seal, for circular connecting ducts to EN 1506 or EN 13180
  • The heating coil is an encased plain pipe
  • IP 43



Materials and surfaces

  • Casing and switch cabinet made of galvanised sheet steel
  • Heating coil made of stainless steel 1.4301



Standards and guidelines

  • Casing air leakage to EN 15727, class C



Maintenance

  • Regular functional tests, especially of the thermal cut-out



Useful additions

  • Capacity control is required (to be provided by others)
  • Airflow monitoring is required (to be provided by others)


Technical information

Technical data, Quik sizing, Specification text, Order code

  • Technical data
  • QUICK SIZING
  • SPECIFICATION TEXT
  • ORDER CODE

Nominal sizes100 – 400 mm
Volume flow rate range12 – 750 l/s or 43 – 2700 m³/h
Electrical power consumption0.4 – 9 kW
Minimum airflow velocity1.5 m/s (airflow monitoring required, by others)
Maximum outlet airflow temperature50 °C (capacity control required, by others)
Maximum operating temperatureWithout integral control = 40 °C max.
Release temperature – temperature monitor TWApprox. 60 °C (automatic reset if the value falls below this temperature; hysteresis approx. 15 K)
Release temperature for thermal cut-outApprox. 90 °C (manual reset on the air heater required)
Air-side static differential pressure5 – 75 Pa
Supply voltage NS 100230 V AC, 400 W
Supply voltage NS 125230 V AC, 900 W
Supply voltage NS 160230 V AC, 1200 W
Supply voltage NS 200230 V AC, 2100 W
Supply voltage NS 250400 V AC 2-phase, 3000 W
Supply voltage NS 315400 V AC 3-phase, 6000 W
Supply voltage NS 400400 V AC 3-phase, 9000 W
Protection levelIP 43
EC conformityEMC to 2014/30/EU, low voltage to 2014/35/EU
LicenceCE, UKCA, S, EAC

 

Technical data – electric air heater

Basic units: TVR, RN and VFC


NS

qv

∆pst [Pa]

te = 16 °C

l/s

m³/h

P [kW]

ta [°C]

100

12

43

5

0.4

44

100

20

72

10

0.4

33

100

30

108

15

0.4

27

100

40

144

25

0.4

24

100

45

162

30

0.4

23

125

24

85

5

0.9

48

125

35

126

20

0.9

37

125

50

180

40

0.9

31

125

65

234

60

0.9

27

125

75

270

80

0.9

26

160

30

108

5

1.2

49

160

50

180

10

1.2

36

160

70

252

15

1.2

30

160

95

342

25

1.2

26

160

115

414

35

1.2

25

200

59

210

5

2.1

46

200

80

288

20

2.1

38

200

115

414

35

2.1

31

200

150

540

55

2.1

28

200

180

648

80

2.1

26

250772755349
25012545015336
25018064825330
25023584640327
250290104460325
3151535505649
31520072015641
315285102625633
315375135040629
315460165660627
4002288205949
400325117015939
400465167430932
400605217850928
400750270075926

P: Electrical power consumption
te: Inlet airflow temperature
ta: Outlet airflow temperature
qv: Volume flow rate
Δpst: Static differential pressure


Specification text



Electric air heater for reheating airflows in ventilation and air conditioning systems. Dimensions fit VAV terminal units TVR as well as CAV controllers RN and VFC. Integral twofold overheating protection with temperature monitor and thermal cut-out. Spigot with lip seal for ducts according to EN 1506 or EN 13180. Casing leakage according to EN 15727, class C.


Materials and surfaces



  • Casing and switch cabinet made of galvanised sheet steel
  • Heating coil made of stainless steel 1.4301



Technical data



  • Volume flow rate range: 12 to 750 l/s or 43 to 2700 m³/h
  • Electrical power consumption: 0.4 to 9 kW
  • Maximum outlet airflow temperature: 50 °C
  • Static differential pressure: 5 to 80 Pa
  • Supply voltage: 1 × 230 V AC to 3 × 400 V AC
  • Protection level: IP 43



Sizing data



  • qv [m³/h]
  • P [kW]

 



EL/160
||
12

1 Type
EL Electric air heater for VAV terminal units TVR and for CAV controllers RN and VFC 


2 Nominal size [mm]
100, 125, 160, 200, 250, 315, 400


Order Example: EL/160
Nominal size160 mm

Dimensions and weight, Installation details

  • Dimensions and weight
  • INSTALLATION DETAILS
Electric air heater – dimensions Electric air heater – dimensions
1 Arrow indicating the airflow direction (on the side of the control equipment box)
2 Cable penetrations
Dimensions and weights of the electric air heater


NS

ØD

H3

m [kg]

100991162
1251241412.5
1601591762.9
2001992163.7
2502492664.5
3153143316.7
4003994168.1
Access to control equipment box and reset device for the thermal cut-out Access to control equipment box and reset device for the
thermal cut-out

④ Reset button

General information on commissioning



  • Installation in horizontal or vertical ducts
  • Installation only in ducts made of non-cumbustible and temperature resistant material
  • An arrow at the side of the casing indicates the only acceptable airflow direction
  • A straight duct section of at least 2D is required upstream and downstream of:
    • components such as volume flow controllers, flow adjustment dampers, valves and filters
    • bends, junctions or a narrowing or widening of the duct
  • We recommend installing the air heater downstream of a VAV terminal unit, otherwise the terminal unit's flow rate measuring system may be affected by the higher air temperature
  • The control equipment box may be fitted on the top or at the side (90° max.). The control equipment box must not be fitted at the bottom of the duct
  • At least 30 mm distance between the sheet metal casing and wood or other combustible materials
  • Capacity control and supply connections to be provided by others
  • Airflow monitoring is required and to be provided by others



Correct assignment of types for installation, wiring and commissioning; see also the manufacturer's documentation


Order code

Type according to manufacturer (see installation manual)

EL/100

CV10 - 04 - 1M

EL/125

CV12 - 09 - 1M

EL/160

CV16 - 12 - 1M

EL/200

CV20 - 21 - 1M

EL/250

CV25 - 30 - 2M

EL/315

CV31 - 60 - 3M

EL/400

CV40 - 90 - 3M


Space required


NS

100320125300
125320150300
160320185300
200320225300
250320275300
315320340300
400320425300

Downloads

product information

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Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +61 (02) 8923 2551