Caloritech CX Series Screw Plug Immersion Heater, 1"NPT, 500W, 120V, 15"L

Caloritech CX Series Screwplug Immersion Heaters are used primarily for water heating in tanks or vessels and have brass screwplugs with NPT-style threads and copper sheath elements. Heaters are available with factory-installed thermostats to control the liquid temperatures. These heaters are designed to be fully immersed in liquid at all times. It is used primarily to heat water in tanks through natural convection currents. Typical heaters have standard - 2-1/2" NPT tapered plugs. Other sizes or plugs are available on special order. All thermostat equipped screwplug heaters with moisture or explosion-proof housings feature a convenient terminal block mounted to a slide out trolley. Although electricity costs are generally higher than gas or oil, it can be demonstrated that a Caloritech immersion heater is often your best choice. The electric heater provides close to 100 efficiency, is safer and easier to control, and is usually cheaper to install. Installation - Listed heaters have standard 1in. to 2-1/2 in. NPT tapered plugs. Any other size or type of plug is available on special order. The heater is installed through a threaded half coupling located in the vessel wall well below the minimum liquid level but spaced sufficiently above the bottom to allow for sludge build-up which should never be allowed to cover any part of the elements. Horizontal installation is preferred even though heater replacement will require draining of the tank. Vertical installation is sometimes possible but it is best that you contact the factory for advice prior to purchase. Operation - For an immersion heater to transfer heat it must establish a balance between convection currents and the temperature difference between itself and the liquid. Viscous liquids which retard convection currents are the most difficult to heat. Care must be exercised to ensure that the required rate of heat transfer from the heating elements is achieved without overheating the element and the liquid resulting in coking. This is generally achieved through the selection of heater watt density. Features: Heat Type: Electric Screwplug Immersion HeatersTerminal Box Type: General Purpose Terminal BoxModel: Caloritech CX Series Screwplug Immersion Heater, 2"NPTImmersion Length: 21.7 Inches / 551 mmNumber of Heating Elements: Two Heating ElementsSafety Certifications: CSA, C/US Safety CertifiedVoltage: Custom built heaters are available in any special voltage rating up to 600VWattage: Heaters listed are standard wattage. Any reasonable wattage is available to replace your present heater with a similar Caloritech unitImmersion Length: Heaters are available with immersed lengths up to 135" (3430 mm). Internal vessel support must be used when the immersed length exceeds 49" (1245 mm)Plug Sizes and Ratings: Thermon Heating Systems can install elements in virtually any size or rating of plug, special or standardFor Models With a Built-in Thermostat: Standard built-in thermostat is a one-pole device limited to 240V 25 amp. Whenever the heater voltage exceeds 240V or the heater current exceeds 25 amps or for three phase supply, the thermostat is intended for pilot duty only and is not factory wired to the elements. See Section F of the Caloritech catalog for the selection of the contactor and control transformer you may require in these instances.