Watlow LDH Series & D Series Duct Heaters
Overview
Duct heaters 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 air duct heaters offer advantages over gas or oil fired and open coil electric units with:
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 air duct heaters offer advantages over gas or oil fired and open coil electric units with:
- Installation flexibility - no flues or fuel lines.
- 100 % energy efficient - no energy loss up the flue.
- Universal availability of electricity.
- Resistance coil in sheath is protected from corrosive environments.
- Duct heaters with general purpose enclosures meet UL® and CSA component recognition to 480 and 600VAC maximum respectively—UL® and CSA file numbers are E52951 and 31388.
Features & Benefits
- Long life alloy 800 sheath resists corrosion/oxidation while protecting resistance coils against contamination.
- MgO insulation filled elements compacted to rock hard density maximizes dielectric strength, heat transfer and life.
- Field replaceable heating elements permits easy service and reduces downtime.
- General purpose terminal enclosure offers easy access to wiring.
- WATROD hairpins are recompacted after bending to eliminate hot spots and electrical insulation voids.
Specifications
Material
Alloy
Maximum Operating Temperatures
2050 F°
1120 C°
Maximum Watt Densities
W/in2 = 30
W/cm2 = 4.6
Alloy
Maximum Operating Temperatures
2050 F°
1120 C°
Maximum Watt Densities
W/in2 = 30
W/cm2 = 4.6
Documentation
Quality Certificates
ISO 9001-2008 Hannibal
User Manuals
FIREBAR Circulation Heater Installation & Maintenance Manual
Catalogs
Thermal Component Reference Guide
Heater Catalog (Section) - Agency Certifications
Heater Catalog (Section) - Air Heaters
Heater Catalog (Section) - Heater Reference Data
Heaters Catalog
Specification Sheets
Duct Heaters
Modular Duct Heater
ISO 9001-2008 Hannibal
User Manuals
FIREBAR Circulation Heater Installation & Maintenance Manual
Catalogs
Thermal Component Reference Guide
Heater Catalog (Section) - Agency Certifications
Heater Catalog (Section) - Air Heaters
Heater Catalog (Section) - Heater Reference Data
Heaters Catalog
Specification Sheets
Duct Heaters
Modular Duct Heater
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