WIRING
WARNING: Hazard of electrical shock. Any installation involving electric heaters must be grounded to earth to elim- inate shock hazard.
1.Electrical wiring to heater must be installed in accordance with the National Electric Code and/or local electrical codes.
2.When element wattages are not equal, heaters must not be connected in series.
3.Electrical wiring to heater should be connected in rigid con-
duit or in flexible hose to keep corrosive vapors and liquids out of the terminal 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 applica- tions 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 Parrallel
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 steam heating service, condensate drain may be provided from bottom of chamber. Check factory.
2.Terminal ends of heater must be protected from drippings con- densation spray or direct
tight terminal enclosures are available to protect heater. Check with local sales representative.
3.If foreign material is carried by the gaseous flow, install suit- able filters in the inlet pipe to the heater.
4.Do not allow heater to operate when steam, air or gas flow is interrupted.
MAINTENANCE
WARNING: Hazard of electric shock. Disconnect all power before servicing heater.
1.Remove heating element assembly periodically to check heater sheath for corrosion or excessive oxidation. Correct operat- ing conditions to minimize sheath deterioration.
2.Periodically check temperature control and limit control oper- ation to insure accurate and safe process operation.
3.Check all electrical connections periodically and retighten connections which may have loosened in service. Replace wire terminals which show signs of oxidation which would interfere with establishment 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
Phone: | www.chromalox.com |
TA - U0 - EF
Printed in U.S.A.
