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D SERIES Duct Heaters - Application: Medium Temperature Air 750ºF (399ºC)

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Constructed of sturdy 0.430 in. (11 mm) diameter WATROD™ heating elements mounted to a 1/4 in. (6 mm) thick steel flange, duct heaters are easily adapted to many non-pressurized air-heating systems.
They are easily installed in applications requiring a wide range of temperature versus air flow combinations.
The modular duct heater offers increased reliability. The individual modules are removable through the housing of the assembly, which eliminates the need to pull the complete heater from the ductwork. This reduces downtime costs because the heating elements can be replaced individually. Performance improvements include quicker response time and reduced infiltration from the air stream being heated into the electrical enclosure.
Watlow® duct heaters offer advantages over gas or oil fired and open coil electric units with:
  • Installation flexibility-no flues or fuel lines
  • 100 percent energy efficient-no energy loss up the flue
  • Universal availability of electricity
  • Resistance coil in Incoloy® sheath is protected from corrosive environments
Choosing a Duct Heater
The English and metric graphs, will help you to select the correct duct heater. These graphs include: Watt Density vs. Air Temperature/Velocity, Watt Density vs. Sheath Temperature and Pressure Drop vs. Air Velocity.
These graphs, with the quick formulas on this page, along with information specific to your application, will determine the correct duct heater specifications. However, if engineering assistance is needed, contact your Watlow representative.


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LDH Series and D Series Duct Heaters

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D SERIES Duct Heaters - Application: High/Medium Temperature Air 800ºF/750ºF (427ºC/399ºC)-2 (D6SX10S)

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  Results 1 - 25 of 39 Unit of Measure: Imperial | Metric | Both  1 2 

Code No.

# of Elements

Voltage

Watts

Phase

# Circ.

Dimension A

Dimension B

Dimension C

D6SX10S 6 240 VAC 9 kW 1 1 27.88 in
708.0 mm
20 in
508 mm
2.75 in
70 mm
D6SX3S 6 240 VAC 9 kW 3 1 27.88 in
708.0 mm
20 in
508 mm
2.75 in
70 mm
D6SX11S 6 480 VAC 9 kW 1 1 27.88 in
708.0 mm
20 in
508 mm
2.75 in
70 mm
D6SX5S 6 480 VAC 9 kW 3 1 27.88 in
708.0 mm
20 in
508 mm
2.75 in
70 mm
D12SX10S 12 240 VAC 18 kW 1 2 27.88 in
708.0 mm
20 in
508 mm
4.75 in
121 mm
D12SX3S 12 240 VAC 18 kW 3 1 27.88 in
708.0 mm
20 in
508 mm
4.75 in
121 mm
D12SX11S 12 480 VAC 18 kW 1 1 27.88 in
708.0 mm
20 in
508 mm
4.75 in
121 mm
D12SX5S 12 480 VAC 18 kW 3 1 27.88 in
708.0 mm
20 in
508 mm
4.75 in
121 mm
D18SX10S 18 240 VAC 27 kW 1 3 27.88 in
708.0 mm
20 in
508 mm
6.75 in
171 mm
D18SX3S 18 240 VAC 27 kW 3 2 27.88 in
708.0 mm
20 in
508 mm
6.75 in
171 mm
D18SX11S 18 480 VAC 27 kW 1 2 27.88 in
708.0 mm
20 in
508 mm
6.75 in
171 mm
D18SX5S 18 480 VAC 27 kW 3 1 27.88 in
708.0 mm
20 in
508 mm
6.75 in
171 mm
D24SX10S 24 240 VAC 36 kW 1 4 27.88 in
708.0 mm
20 in
508 mm
8.75 in
222 mm
D24SX3S 24 240 VAC 36 kW 3 2 27.88 in
708.0 mm
20 in
508 mm
8.75 in
222 mm
D24SX11S 24 480 VAC 36 kW 1 2 27.88 in
708.0 mm
20 in
508 mm
8.75 in
222 mm
D24SX5S 24 480 VAC 36 kW 3 1 27.88 in
708.0 mm
20 in
508 mm
8.75 in
222 mm
D30SX3S 30 240 VAC 45 kW 3 5 27.88 in
708.0 mm
20 in
508 mm
10.75 in
273 mm
D30SX11S 30 480 VAC 45 kW 1 2 27.88 in
708.0 mm
20 in
508 mm
10.75 in
273 mm
D30SX5S 30 480 VAC 45 kW 3 2 27.88 in
708.0 mm
20 in
508 mm
10.75 in
273 mm
D36SX3S 36 240 VAC 54 kW 3 3 27.88 in
708.0 mm
20 in
508 mm
12.75 in
324 mm
D36SX11S 36 480 VAC 54 kW 1 3 27.88 in
708.0 mm
20 in
508 mm
12.75 in
324 mm
D36SX5S 36 480 VAC 54 kW 3 2 27.88 in
708.0 mm
20 in
508 mm
12.75 in
324 mm
D42SX3S 42 240 VAC 63 kW 3 7 27.88 in
708.0 mm
20 in
508 mm
14.75 in
375 mm
D42SX11S 42 480 VAC 63 kW 1 3 27.88 in
708.0 mm
20 in
508 mm
14.75 in
375 mm
D42SX5S 42 480 VAC 63 kW 3 2 27.88 in
708.0 mm
20 in
508 mm
14.75 in
375 mm
  Results 1 - 25 of 39 1 2