WIRING

1.Connect heater only to the voltage, frequency and phase spec- ified on the nameplate.

2.All wiring should be done according to local and National Electric Codes.

3.Make supply connections to marked heater terminals using wire suitable for 75°C. (Type RH-RW or equivalent).

4.Conduit attachment to heater:

a.Run conduit(s) to conduit entrance plate. (See Figure 1).

b.Mark plate where conduit(s) will enter plate.

c.Remove screws and plate.

d.Punch conduit entrance plate with a hole(s) to accommo- date the required conduit(s).

e.Reinstall plate and install conduit(s) to plate.

Fan Interlock. The fan circuit must be interlocked with the control circuit of the heater. Refer to the wiring diagram in the heater terminal box.

Hazard of electrical shock. Any installation involv- ing electric heaters must be grounded to earth to eliminate shock hazard.

Control Ratings

 

Manual Limit Control

 

Automatic Limit Control

 

Pilot

Non-Inductive

 

Pilot

Non-Inductive

Volts

Duty

Rating

 

Duty

Rating

120

125 VA

3000 Watts

 

125 VA

3000 Watts

208

125 VA

5200 Watts

 

125 VA

5200 Watts

240

125 VA

6000 Watts

 

125 VA

6000 Watts

277

125 VA

6925 Watts

 

125 VA

6925 Watts

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Hazard of severe shock. Disconnect all power to heater before servicing.

WIRING DIAGRAM

The appropriate wiring diagram will be supplied with each heater.

RENEWAL PARTS IDENTIFICATION

Typical DHIF Duct Heater

Conduit Entrance Plate

Main Disconnect

Transformer Fusing

Air Flow Switch

Transformer

Fintube Heating

Element

Static equalizers (not shown) maintain uniform air flow across the heater face when individual fintubes are omitted.

Contactor

Air Flow Switch Automatic and Manual Reset

Fusing

(not shown)

 

Contact your local Chromalox Sales Office with Complete heater catalog number or part number.

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Chromalox PF455-3 manual Wiring Diagram, Renewal Parts Identification, Typical Dhif Duct Heater

PF455-3 specifications

The Chromalox PF455-3 is a cutting-edge process feedback controller designed to optimize industrial heating applications. As part of Chromalox’s commitment to providing advanced heating solutions, the PF455-3 model stands out due to its robust features, precision control, and user-friendly design.

One of the main features of the PF455-3 is its versatile temperature control capabilities. It operates through a wide temperature range, accommodating various industrial processes that require precise thermal management. The controller employs advanced PID (Proportional, Integral, Derivative) control technology, allowing users to achieve optimal temperature settings with minimal fluctuations. This results in enhanced efficiency and productivity across heating applications.

The PF455-3 is equipped with a large, easy-to-read digital display that allows operators to monitor and adjust temperature settings effortlessly. The intuitive user interface simplifies navigation through various settings and configurations, ensuring that even less experienced personnel can operate the system with confidence. This feature significantly reduces the learning curve associated with similar devices, making it an ideal choice for diverse industries.

Additionally, the PF455-3 places a strong emphasis on safety and reliability. The device includes built-in alarm systems that notify users of any deviations from preset parameters, ensuring immediate action can be taken to prevent potential issues. The unit also features robust construction designed to withstand harsh industrial environments, providing longevity and minimizing downtime.

Moreover, the PF455-3 supports advanced communication technologies. It can be easily integrated into existing control systems via various communication protocols, including Modbus, which facilitates real-time data exchange and remote monitoring capabilities. This connectivity not only enhances operational oversight but also allows for proactive maintenance interventions.

In terms of energy efficiency, the PF455-3 excels by utilizing a unique energy-saving mode. This mode intelligently adjusts heating output based on process requirements, resulting in reduced energy consumption and lower operational costs. Users can expect significant savings on energy bills while maintaining process quality.

In summary, the Chromalox PF455-3 controller represents the forefront of industrial heating technology. With its advanced PID control, user-friendly interface, extensive safety features, and energy efficiency capabilities, it is a reliable choice for businesses looking to enhance their thermal processes. Whether in food processing, oil and gas, or chemical manufacturing, the PF455-3 stands out as a vital tool for achieving precise and efficient temperature control.