27th Edition RHFS Product Guide - Ryan Herco Flow Solutions

ELECTRIC HEATER GUIDEBASIC INFORMATION ABOUT ELECTRIC HEATERSHEATER SIZING INFORMATIONAMP CALCULATION FOR CONTROL SELECTIONGallonsTemperature (°F)100 110 120 130 140 150 160 170 180 190 200 21050 1 1 1 2 2 2 2 3 3 4 4 5100 2 2 3 3 3 4 4 5 6 6 8 8200 4 4 5 6 6 7 8 9 10 11 12 14300 6 6 7 8 9 10 12 14 15 16 18 20400 8 8 9 10 12 14 16 19 20 21 24 26500 9 10 12 13 15 18 20 24 24 27 30 32600 11 12 15 16 18 21 24 28 30 32 36 38700 13 14 17 18 21 24 28 32 36 38 42 44800 15 16 19 21 24 28 32 36 40 44 48 52900 17 18 21 24 27 32 36 40 44 48 54 581000 18 21 24 27 30 36 40 44 48 54 58 64This chart provides an easy reference to estimate the kW requiredto heat a tank. Heat loss from the surface of the solutionand from the sides of the tank have been taken into account.Find the gallons at the left, move to the right to the column withthe temperature at which you will be heating the solution. Thenumber indicated here is the kW required to do the heatingjob. This kW figure assumes a heat-up period of six hours; fora twelve hour heat-up time, simply divide the kW figure in half.NOTE: This chart is for quick estimates only.Amps for Heating LoadHeater Single Phase Three Phase (Balanced)Watts 120V 208V 230V 240V 460V 480V 208V 230V 240V 460V 480V1,000 8.4 4.8 4.4 4.2 2.2 2.1 2.8 2.6 2.5 1.3 1.22,000 16.7 9.7 8.7 8.4 4.4 4.2 5.6 5.1 4.9 2.6 2.53,000 25.0 14.5 13.1 12.5 6.6 6.3 8.4 7.6 7.3 3.8 3.74,000 33.4 19.3 17.4 16.7 8.7 8.4 11.2 10.1 9.7 5.9 4.96,000 50.0 28.9 26.1 25.0 13.1 12.5 16.7 15.1 14.5 7.6 7.38,000 66.7 38.5 34.8 33.4 17.4 16.7 22.3 20.2 19.3 10.1 9.79,000 75.0 43.3 39.2 37.5 19.6 18.8 25.1 22.7 21.7 11.4 10.912,000 100.0 57.7 52.2 50.0 26.1 25.0 33.4 30.2 29.0 15.1 14.518,000 150.0 86.6 78.3 75.0 39.2 37.5 50.1 45.3 43.4 22.7 21.727,000 225.0 129.9 117.4 112.5 58.7 56.3 75.1 67.9 65.1 34.0 32.636,000 300.0 173.1 156.6 150.0 78.3 75.0 100.1 90.5 86.8 45.3 43.4For single phase or two wire power supplies to heatersAMP RATING = Total capacity (watts)PER POLE*line voltageSAFETY INFORMATION AND CAUTIONS WHEN USING IMMERSION HEATERS• A liquid level device must be installed in all tanks to preventprolonged exposure of the heater’s hot zone to the tank wall,as a preventative measure for heater burnout, electrical andfire hazards. Warning devices are mandatory if a heated tankis to be left unattended for any period of time.• Heater may not be used interchangeably with all chemicalsolutions. Obtain the recommendation of the chemical supplierfor the heater best suited to the chemistry. Some chemicalsare identified by trade names to protect proprietary formulas.Some chemicals in the formula may affect the heater sheathmaterial resulting in chemical attack with possible electricalhazards or immediate failure. Some chemicals may requirederated (lower watt density) heaters.• New heater installations and startups should be performedonly by a licensed electrician.• High humidity is common in metal finishing/platingenvironments. Precautions must be taken to protect personnelfrom stray electrical currents. Use rubber gloves, boots, andinsulated work platforms.• Use ground fault circuits, overheat protection, low level controlsand stray current warning devices.• An older heater may become hazardous due to chemicalcorrosion that may eventually cause pinholes. Chemicalbuildup on heaters will tend to keep heat from dissipatingproperly into the solution which will result in heater burnoutor a reduced life span. A regular maintenance program ofcleaning and inspection will prevent chemical buildup orchemical corrosion of the heater.NOTE: All heaters must be operated in conjunctionwith appropriate temperature and level controls.Example:4000 watts/240 volts = 16.67 AmpsFor three phase balanced power supplies (Delta or Wye connections)to heaters using a three-pole contactor.AMP RATING = Total capacity (watts)PER POLE* line voltage x 1.73Example: 4000/240 x 1.73 = 9.63 AmpsContactor sizing: *Amp rating per pole X 1.25= contactor ratingPlease insure applicability of heater before installationsince we cannot guarantee heaters against prematurefailure due to corrosion or chemical destruction caused byunusual conditions over which we have no control such as:• Excessively high solution • The presence of dissolvedtemperatures.gases.• The concentration of the • Excessive sludge build-up.solution.• The presence of inhibitors.• Stagnant or turbulent flow ofthe solution.• The presence of other • Aeration.acids causing a secondary • Presence of oxygen orreaction.an oxidizing agent in the• Flux floating on the solution.surface.• Erosion.1-800-848-1141www.rhfs.com569