WIRING
WARNING: Hazard of Shock. Any installation involving electric heaters must be effectively grounded in accordance with the National Electrical Code to elim- inate shock hazard.
1.Electrical wiring to heater must be installed in accordance with the National Electrical Code and local electrical codes by a qualified person as defined in the NEC.
2.When element wattages are not equal, heaters must not be con- nected in series.
3.Electrical wiring to heater should be connected in rigid conduit or in flexible hose to keep corrosive vapors and liquids out of the ter- minal housing. If high humidity is encountered, the conduit should slope down away from the heater.
4.If flexible cord is employed, a watertight connector should be used for entry of the cord into the terminal box. Outdoor applications require
5.Bring the power line wires through the opening in the terminal box. Connect line wire as shown in the diagram. (Figures 1 thru 3)
3 Pole Contactors
Line
Control
Volts
3 Heating Elements
Thermostat
2 Pole Contactors
Line
Control
Volts
1, 2, or 3 Heating Elements
in Series
or Parallel
Thermostat
3 Pole Contactors
Line
Control
Volts
3 Heating Elements
Thermostat
Figure 1 — For Three Phase WYE Heaters
Figure 2 — For Single Phase Heaters
Figure 3 — For Three Phase Delta Heaters
Note: Dotted lines indicate “customer furnished.”
OPERATION
1.Do not heat materials that are corrosive to the heating element sheath or chamber. For oil heating service, drain may be provided from bottom of chamber. Check factory.
2.Terminal ends of heater must be protected from drippings conden- sation spray or direct
minal enclosures are available to protect heater. Check with local sales representative.
3.If foreign material is carried by the oil flow, install suitable filters in the inlet pipe line to the heater.
4.Do not allow heater to operate when fluid flow is interrupted.
MAINTENANCE
WARNING: Hazard of Shock. Disconnect all power before servicing heater.
1.Remove heating element assembly periodically to check heater sheath for corrosion or excessive oxidation. Correct operating con- ditions to minimize sheath deterioration.
2.Periodically check temperature control and limit control operation to insure accurate and safe process operation.
3.Check all electrical connections periodically and retighten connec- tions which may have loosened in service. Replace wire terminals which show signs of oxidation which would interfere with estab- lishment of reliable electrical connections.
RENEWAL PARTS IDENTIFICATION
Thermostat |
Limited Warranty:
Please refer to the Chromalox limited warranty applicable to this product at
2150 N. RULON WHITE BLVD., OGDEN, UT 84404 |
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Phone: | www.chromalox.com | TA - U0 - EF |
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Litho in U.S.A.
