Control circuit requires over-current protection. All electrical wiring to electric heaters must be installed in accordance with the National Electrical . Over temp cut-out and thermostat. Three Phase star connection (wire ). For industrial electric heaters.
Noddington Avenue, Whittington, .
The power factor is always unity.
Voltage between outside wires = 1. All work must be carried out by suitably qualified personnel. Wire in accordance with the wiring diagram detailed above. Check that the heater is compatible with the supply voltage.
Ensure that the supply cables are suitably rated for the heater load and that they will. Instructions for Industrial Immersion Heaters.
It Is the responsibility ol the electrical contractor to ensure the heater and wiring conform to the regulations relating to the site. Electricity from power plant to distribution substation. High voltages means lower amps, which mean less heat loss and more transmission distance. Illustrated on these pages are typical wiring diagrams for HEATREX open coil and finned tubular duct heaters.
ACCORDANCE WITH THE FOLLOWING DIAGRAMS AND.
The electrical supply to the heater should. See “Basic Electric Heat Wiring Diagrams to help identify Star. These models can be field changed from single phase to three phase or three phase to single phase.
Be sure electricity is turned off at main switch first before wiring.
Any installation involving electric heaters must be effec-. Typical - Phase Wiring Diagrams and Equations for Resistive Heaters. See Basic Electric Heat Wiring Diagrams to help identify Star (Wye) Elements.
Stiebel Eltron Electric Tankless water heaters can be connected to three phase , 2volt power using these wiring diagrams. If three phase , measure all three phases. Consult appropriate wiring diagrams and connect protector as required.
Combining heaters of different wattage, or non-uniform groupings (not divisible by three for single- phase elements) will cause unbalanced electrical loads on one or more of the phases. This Service Manual is designed to be an aid in servicing and troubleshooting the commercial electric water heater models listed on the cover.
The instructions, illustrations and procedures contained in this manual are used to verify proper operation and to diagnose and repair common service problems. Installation work, both mechanical and electrical , must be. The terminal box may also contain wiring instructions.
If you are only installing the heater in the air duct, leave these instructions for the electrician!
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