Wiring, Operation | Chromalox NWH-185015 specification

INSTALLATION

2.Horizontal Mounting (Optional)

When mounting heater horizontally, inlet and outlet pipes must be up. In any other position, heater cannot be purged of air, and elements may be seriously damaged. (See Figure B)

Correct

Incorrect

Figure B — Horizontal Mounting

3.Whether vertically or horizontally, the heater should be rigidly mounted so that vibration is at a minimum since excessive vibration will result in erratic thermostat operation. The NWH-18 is provided with mounting lugs to support the heat- ing chamber. (See photo on previous page)

4.By using a slotted mounting assembly on either of the mount- ing lugs, the heater chamber will be permitted to expand with increasing temperature.

5.DANGER: Hazard of Fire. Provide minimum of 6” spac- ing from chamber and related piping to nearest combustible material. Avoid operation of heater near combustible fluids or in combustible vapor or gas laden atmospheres.

6.Provide adequate space at terminal to end permit withdrawal of the heater from chamber for servicing.

WIRING

WARNING: Hazard of Shock. Any installation involving electric heaters must be effectively grounded in accordance with the National Electrical Code to eliminate shock hazard.

1.Be sure line voltage matches heater voltage (on nameplate).

2.Electric wiring to heater must be installed in accordance with local and National Electrical Codesby a qualified person as defined in the NEC.

3.Power controllers must be used when heaters are rated for 480 volt service or if the amperage rating of the heaters exceeds the contact rating of the thermostat.

4.Refer to Wiring Diagram Table B for the proper wiring dia- gram for connecting heater.

Table B — Wiring Diagrams

Heater Model	240V 3 Phase Fig.	480V 3 Phase Fig.
NWH-185015	1	2
NWH-187515	1	2
NWH-1810015	1	2
NWH-1812515	1	2
NWH-1815015	1	2
NWH-1817515	1	2
NWH-1820015	1	2

Contactor L1

Contactor

120V or

240V Thermostat

Figure 1 – 240V 3-3 ø

Contactor

120V or

240V Thermostat

Figure 2 – 480V 3-3 ø

Note: Dotted lines indicate “customer furnished.” However, Thermostat can be furnished by Chromalox if so specified on the order.

OPERATION

1.Do not heat solutions that are corrosive to the heating element sheath or the heating chamber.

WARNING: Type NWH Circulation Heaters are equipped with copper heating elements and galvanized-steel heating chambers. It is the responsibility of the user to know the chemical composition of the corrosive solution and the character of the materials entering the solution as well as the corrosive effect of the solution upon the heating elements and chamber. Chromalox cannot warrant any electric circula-

tion heater against failure by sheath corrosion if such failure is the result of operating condi- tions beyond our control.

2.Terminal ends of heater must be protected from drippings, condensation, spray or direct spill-over of material. Their presence at the terminals may damage heater electrical insula- tion. Liquid-tight terminal enclosures are available to protect heater. Check Factory.

3.If foreign material is carried by the liquid flow, install suitable filters in the inlet pipe line to the heater.

4.Do not allow heater to operate when liquid flow is interrupted.

NWH-185015 specifications

The Chromalox NWH-185015 is a versatile and efficient electric heating solution designed to meet a variety of industrial and commercial heating applications. This product stands out due to its robust construction, extensive features, and the innovative technologies that enhance its performance.

One of the key features of the NWH-185015 is its powerful heating capacity. With a wattage rating of 15,000 watts, it is capable of delivering substantial thermal energy, making it suitable for tasks that require rapid heating or maintaining precise temperature levels. The unit is designed for use in applications such as water heating, process heating, and even for providing comfort heating in specific environments.

The NWH-185015 utilizes advanced heating technologies to ensure efficient energy usage while minimizing operational costs. It incorporates a thermostat control system that allows for precise temperature regulation. The built-in safety features include over-temperature protection and a high limit cutoff switch, ensuring reliable operation without compromising safety.

Another major characteristic of this unit is its durable design. Constructed with high-quality materials, the NWH-185015 is built to withstand harsh environments and demanding operating conditions. This durability not only extends the unit's lifespan but also reduces maintenance costs over time.

Installation and integration of the NWH-185015 into existing systems are streamlined, thanks to its user-friendly design. It offers multiple configurations and voltage options, making it adaptable to a range of applications. Moreover, its compact size allows for easy placement in various settings, whether in tight spaces or established infrastructures.

The NWH-185015 also emphasizes energy efficiency, which is increasingly important in today's energy-conscious market. By utilizing intelligent heating elements and smart controls, the unit helps minimize energy consumption without sacrificing performance.

In summary, the Chromalox NWH-185015 is a top-tier solution for anyone seeking reliable electric heating. Its powerful output, innovative technologies, and robust construction combine to deliver outstanding performance across a multitude of applications. Whether for industrial processes or commercial needs, this heating unit offers the reliability and efficiency essential for modern heating demands.