Installation

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

1.Before installing the PTH heater, inspect it thoroughly for possible damage which may have occured during shipment. Also check to insure that the line voltage is the same as that stamped on the heater nameplate.

2.Where work will pass over or near equipment, additional pro- tection such as a metal guard may be needed.

3.To resist buoyancy and to keep the heater in close profile with tank wall, a metal bracket with two mounting holes has been pro- vided.

4.IMPORTANT: Heated section (See Figure 1, “B” Dimension) must be totally immersed at all times. If the heater is not properly submerged, it will overheat and damage the heating elements and create a possible fire hazard due to excessive sheath temperatures.

5.Heater must not be operated in sludge.

FIRE HAZARD. Since heaters are capable of develop- ing high temperatures, extreme care should be taken to:

A.Avoid installing heaters in an atmosphere containing com- bustible gases and vapors.

B.Avoid contact between heater and combustible materials.

C.Keep combustible materials far enough away to be free of the effects of high temperatures.

WIRING

ELECTRIC SHOCK HAZARD. Any installation involving electric heaters must be performed by a qualified per- son and must be effectively grounded in accordance with the National Electrical Code to eliminate shock hazard.

1.Electrical wiring to heater must be installed in accordance with the National Electrical Code or local codes by a qualified per- son.

2.When element wattages are not equal, heaters must not be connected in series.

3.For single phase, apply power across two (2) black leads. Green wire (ground) must be properly grounded.

4.For balanced 3 phase loads, three (3) heaters of the same volt- age and wattage ratings are required. A six-step guide to wiring connections for 3 phase delta:

#1		A	#1	A	#1	B
		A		A		B
#2	#3	#2	#3		#2	#3

Step 1: Designate one black leadwire as “A” and one black leadwire as “B”.

Step 2: Assign designations	Step 3: Connect leadwire “A”	Step 4: Connect leadwire “B”
1, 2, 3 to heaters.	of Heater #1 to leadwire “A”	of Heater #1 to leadwire “B”
	of Heater #2.	of Heater #3.

A	#1	B	A	#1		B
A		B	A			B
				#2	#3	Three Phase
#2	#3			#2	#3	Power

B	A	B	A

Step 5: Connect leadwire “B”

of Heater #2 to leadwire “A”		Step 6: Connect one 3 phase
of Heater #3.		power line to each of the
		three connections.

Note: Green wire (ground) of each heater must be properly grounded.

PD422-4 specifications

The Chromalox PD422-4 is a state-of-the-art temperature control and monitoring device widely recognized for its reliability and advanced features in a variety of industrial and commercial applications. Designed for precision and efficiency, the PD422-4 stands out in the realm of temperature control systems, making it a preferred choice for many professionals.

One of the main features of the PD422-4 is its advanced digital display. This easy-to-read screen provides real-time temperature readings, facilitating quick assessments and adjustments. The user-friendly interface gives users the ability to set and maintain desired temperature levels with ease, thanks to its intuitive navigation and programming options.

The PD422-4 is equipped with multiple output capabilities, including options for both direct control of heaters and integration with various external control systems. This flexibility allows it to seamlessly interface with existing equipment, enhancing overall system efficiency and performance. Its robust design ensures longevity and dependability in demanding environments, such as manufacturing plants, laboratories, and heating processes.

In terms of technology, the Chromalox PD422-4 utilizes innovative digital control algorithms that optimize performance and energy consumption. With the capacity for PID control, users can achieve precise temperature regulation even in fluctuating conditions. The device also features integrated safety mechanisms to prevent overheating and protect sensitive equipment, ensuring that operational reliability is never compromised.

Another standout characteristic of the PD422-4 is its adaptability to a wide range of applications. Whether used in food processing, pharmaceuticals, or chemical manufacturing, the PD422-4 can be customized to meet specific needs. Its versatility is further enhanced by its ability to support various sensor types, allowing users to select the best fit for their specific requirements.

Additionally, the PD422-4 features advanced diagnostic tools and alarms, providing proactive alerts for any deviations or issues that may arise. This capability not only enhances operator safety but also streamlines maintenance processes, minimizing downtime and maximizing productivity.

In conclusion, the Chromalox PD422-4 is an advanced temperature control solution that combines reliability, adaptability, and cutting-edge technology. With its user-friendly interface, multiple output capabilities, and robust design, it serves as an essential tool for professionals seeking precision and efficiency in temperature management. Its wide-ranging applications make it a valuable asset across various industries, ensuring optimal performance and safety in all operational environments.