General, Installation | Chromalox NWHO-6 instruction

Chromalox®

Installation Instructions

SERVICE REFERENCE

and

DIVISION 4

SECTION NWHO

SALES

(Supersedes PE408-3) PE408-4

RENEWAL PARTS IDENTIFICATION

REFERENCE

161-048341-001

1-3/8” Conduit

DATE JULY, 1990

Openings

16-1/16

Type NWHO-6

2” Pipe

Outlet

Circulation Heaters (for

Thermostat

Regular and Fuel Oil Heating)

Type AR

A B 25”

2” Pipe Inlet

8-5/8

Specifications — Table A

			Regular Oil Heaters

Mounting Lugs	Model	Volts	Phase	kW	W/In2		Dimensions (In.)
Mounting Lugs	Model	Volts	Phase	kW	W/In2	A		B	C
3/8” - 16						A		B	C
Threaded Holes -	NWHO-61215	240 or 480	3 Δ	12	23	41-3/4		30	11-3/8
1-1/2” Deep	NWHO-61515	240 or 480	3 Δ	15	23	48-3/4		37	14-1/8
1-1/4” Centers	NWHO-62015	240 or 480	3 Δ	20	23	60-1/4		48-1/2	20-5/8
	NWHO-62515	240 or 480	3 Δ	25	23	73-5/8		61-7/8	27-5/16
	NWHO-63015	240 or 480	3 Δ	30	23	86-5/8		74-7/8	33-7/8

			Fuel Oil Heaters

	NWHO-60825	240 or 480	1 or 3 Δ	8	15	41-3/4		30	11-3/8
	NWHO-61025	240 or 480	3 Δ	10	15	48-3/4		37	14-1/8
	NWHO-61225	240 or 480	3 Δ	12	15	60-1/4		48-1/2	20-5/8
	NWHO-61525	240 or 480	3 Δ	15	15	73-5/8		61-7/8	27-5/16
	NWHO-61825	240 or 480	3 Δ	18	15	86-5/8		74-7/8	33-7/8

GENERAL

The NWHO-6 series is a general-purpose regular and fuel oil solution circulation heater intended for use indoors. It is designed for 150 psig at 550˚F per ANSI standards.

The 6 steel-sheathed tubular elements are centered in a 5” diameter galvanized steel heating chamber and welded to a removable galvanized steel flange. The assembly is surrounded by 1-1/2” insulation and sheet metal jacket.

Depending upon the order specifications, the NWHO-6 may or may not be factory equipped with an AR or other Chromalox thermostat. (Note: UL listed models are factory pre-set with a

212˚F limit stop.) Such thermostats function to control outlet tem- peratures and to limit internal temperatures under abnormal flow conditions. These controls do not fail safe.

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

INSTALLATION

Caution: Hazard of Electric 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 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 pro- vided and enough room left, when mounting heater, to allow draining the heater.

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

Correct Incorrect

Figure A — Vertical Mounting

Figure B — Horizontal Mounting

NWHO-6 specifications

The Chromalox NWHO-6 is an innovative heating solution designed for various industrial and commercial applications. Built with advanced features and robust technologies, this heating element enhances efficiency and performance, making it a go-to choice for many organizations.

One of the primary features of the NWHO-6 is its exceptional durability. Constructed from high-quality materials, it is engineered to withstand harsh environments, including exposure to moisture, chemicals, and extreme temperatures. This resilience ensures a longer operational life, reducing the need for frequent replacements and maintenance.

The NWHO-6 utilizes advanced heating technologies, including flexible heating configurations. This allows users to customize the output based on specific requirements, making the unit highly versatile. Whether used for process heating, freeze protection, or temperature maintenance, the NWHO-6 adapts seamlessly to various applications.

Energy efficiency is another key characteristic of the Chromalox NWHO-6. The design incorporates innovative heat distribution mechanisms that optimize energy consumption while providing consistent heating output. This efficiency not only lowers operational costs but also contributes positively to environmental sustainability by reducing energy waste.

Safety is paramount in industrial heating solutions, and the NWHO-6 excels in this area as well. With built-in safety features such as thermal overload protection and a reliable control system, the unit minimizes risks associated with overheating or failure. This focus on safety helps to protect both personnel and equipment, ensuring a secure working environment.

The NWHO-6 also features user-friendly integration options. It can be easily implemented into existing systems, offering compatibility with various industrial controls and automation systems. This simplicity in integration makes it ideal for retrofitting or upgrading heating solutions without extensive modifications.

Another advantage is the compact design of the NWHO-6, which allows for easy installation in tight spaces. The streamlined profile ensures that even in crowded environments, the heating unit can be effectively utilized without compromising operational space.

In conclusion, the Chromalox NWHO-6 stands out as a superior heating solution, characterized by its durability, energy efficiency, safety features, and ease of integration. Whether in manufacturing, food processing, or any other industrial sector, the NWHO-6 provides reliable and effective heating, making it an essential component for a wide array of applications. Organizations seeking to enhance their heating solutions will find the NWHO-6 to be an invaluable asset, driving operational efficiency and reducing long-term costs.