Installation, Operation

and

RENEWAL PARTS IDENTIFICATION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

NWH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Supersedes PE424)

PE424-1

161-058005-001

APRIL, 1999

151/8”

2 1/2” Pipe

Outlet

3/4-10 Tap

BMounting

Lugs

2 1/2” Pipe

Inlet

Type NWH-18 Circulation

Heater for Water Heating

(150 Pound Construction)

 

 

 

 

 

 

 

 

 

 

Specifications — Table A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Dimensions (In.)

 

 

 

 

 

 

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Model

Volts

Phase

kW

W/In2

 

 

 

 

 

 

 

 

 

 

 

 

 

A

B

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NWH-185015

240 or 480

3

50

42

457/8

2411/16

213/16

 

 

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NWH-187515

240 or 480

3

75

45

537/8

3211/16

293/16

 

 

 

 

 

 

 

 

 

 

NWH-1810015

240 or 480

3

100

49

607/8

3911/16

363/16

 

 

 

 

 

 

 

 

 

 

NWH-1812515

240 or 480

3

125

50

681/2

475/16

4313/16

 

 

 

 

 

 

 

 

 

 

NWH-1815015

240 or 480

3

150

50

78

5613/16

535/16

 

 

 

 

 

 

 

 

 

 

NWH-1817515

240 or 480

3

175

50

87

6513/16

625/16

 

 

 

 

 

 

 

 

 

 

NWH-1820015

240 or 480

3

200

50

97

7513/16

725/16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GENERAL

WARNING: This heater is not intended for use in hazardous atmospheres where flammable vapors, gases, liquids or other combustible atmospheres are present as defined in the National Electrical Code. Failure to comply can result in explosion or fire.

The NWH-18 series is a general-purpose water or water-based solution circulation heater intended for use indoors. It is designed for 150 psig at 550°F per ANSI standards.

The 18 copper-sheathed tubular elements are centered in a 8” diameter galvanized steel heating chamber and welded to a removable galvanized steel flange. The assembly is surrounded by 3” insulation and sheet metal jacket.

Depending upon the order specifications, the NWH-18 may or may not be factory equipped with an AR or other Chromalox thermostat. Such thermostats function to control outlet tempera- tures and to limit internal temperatures under abnormal flow con- ditions. These controls do not fail-safe.

WARNING: Users should install adequate back-up controls and safety devices with their electric heating equipment. Where the consequences of failure may be severe, back-up controls are essen- tial. Although the safety of the installation is the responsibility of the user, Chromalox will be glad to make equipment recommendations.

INSTALLATION

WARNING: Hazard of Shock. Disconnect all power before installing heater.

1.Vertical Mounting (Preferred) —

When the heater is vertically mounted, the terminal housing will be at the top of the heater. The water inlet pipe will be located on the side near the bottom of the heater and the outlet pipe at the top.

The axis of the chamber will be in a vertical position as in the photo above and as in Figure A.

Note: A drain pipe located at the bottom of the heater should be provided and enough room left, when mounting heater, to allow draining the heater.

Incorrect

Correct

Figure A — Vertical Mounting

© 2010 Chromalox, Inc.

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Chromalox NWH-185015 specifications General, Installation, Vertical Mounting Preferred

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.