WIRING

ELECTRIC SHOCK HAZARD. Disconnect all power before installing or servicing heater. Failure to do so could result in personal injury or property dam- age. Heater must be installed by a qualified person in accordance with the National Electrical Code, NFPA 70.

ELECTRIC SHOCK HAZARD. Any installation involv- ing electric heaters must be performed by a quali- fied person and must be effectively grounded in accordance with the National Electrical Code to eliminate shock hazard.

Note: Electrical wiring is to be in accordance with National Electrical Code.

1.Electrical wiring enters heater case through 7/8” opening in back of heater.

2.Grounding conductor, with green insulation, should be secured under green colored ground screw located in wiring compartment. (See Figures 1 and 2).

3.HVT Model only — The white insulated lead of the incoming power line should be attached to the L1 terminal of the terminal block. (See Figure 2)

4.Replace cover and end screws (removed in step 4, MOUNTING section).

Heaters

Ground

Ground

Heaters

L1 L2

Thermostat

Figure 1

Figure 2

OPERATION

FIRE HAZARD. Keep combustible materials and such fabrics at least 4” away from front of cover or above cover. Failure to comply could result in per- sonal injury or property damage.

FIRE/EXPLOSION HAZARD. This heater is not intended for use in hazardous atmospheres where flammable vapors, gases, liquids or other com- bustible atmospheres are present as defined in the National Electrical Code. Failure to comply can result in personal injury or property damage.

MAINTENANCE

ELECTRIC SHOCK HAZARD. Disconnect all power before installing or servicing heater. Failure to do so could result in personal injury or property dam- age. Heater must be installed by a qualified person in accordance with the National Electrical Code, NFPA 70.

1.Following long periods of idleness, heater should be vacuumed before start-up to remove accumulated combustible particles which will incinerate causing smoking and consequent wall dis- coloration.

2.If heater is located in areas of heavy traffic, furnish suitable heater guard (wall mounted pipe rail in front of case, for example) to pre- vent damage to heater.

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Chromalox PF421-6 specifications Wiring, Operation, Maintenance
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PF421-6 specifications

The Chromalox PF421-6 is an innovative electric heater designed for industrial and commercial applications, renowned for its efficiency, durability, and versatility. This heater is engineered to provide consistent and reliable performance in various settings, including process heating, space heating, and equipment protection. Its robust construction and advanced features make it a preferred choice for professionals seeking a reliable heating solution.

One of the standout features of the PF421-6 is its advanced control system, which allows for precise temperature management. This control system can be easily integrated into existing processes, ensuring optimal heating performance tailored to specific requirements. The heater supports a variety of control options, including on/off, proportional control, and multi-zone temperature management. This versatility ensures that users can adapt the heating performance to suit their operational needs.

The Chromalox PF421-6 also incorporates advanced heating technologies, including high-efficiency heating elements that provide rapid heat-up times while minimizing energy consumption. The heater's design promotes uniform heat distribution, preventing hot spots and ensuring even heating across surfaces. This characteristic is particularly beneficial in applications where temperature consistency is crucial.

Constructed from high-quality materials, the PF421-6 is built to withstand harsh operating environments. Its robust housing and high-grade insulation contribute to its longevity and reliability, even under heavy use. Additionally, the heater's compact design makes it easy to install and integrate into existing systems without requiring extensive modifications.

Safety is a paramount consideration in the design of the PF421-6. The heater is equipped with multiple safety features, including over-temperature protection and fault detection systems. These mechanisms help prevent accidents and ensure safe operation, making it suitable for a range of industries, from food processing to chemical manufacturing.

Finally, the Chromalox PF421-6 is also notable for its low maintenance requirements. With minimal moving parts and its durable construction, users can expect reduced downtime and lower operational costs. This reliability, combined with its advanced features and technologies, makes the PF421-6 a trusted heating solution for professionals seeking long-term performance and efficiency in their operations.
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