ELECTRIC HEATERS OPERATION AND MAINTENANCE MANUAL Stock ID: IOM-EH March, 2007 ©2007 Environmental Technologies Part No.
ELECTRIC HEATERS • O. & M. TABLE OF CONTENTS DESCRIPTION PAGE Important Safety Precautions.......................................................................................................3 Replacement Parts ..............................................................................................................................3 Pre Start-Up ........................................................................................................................................
O. & M. • ELECTRIC HEATERS SAFETY CONSIDERATIONS The equipment covered by this manual is designed for safe and reliable operation when installed and operated within its design specification limits. To avoid personal injury or damage to equipment or property while installing or operating this equipment, it is essential that qualified, experienced personnel perform these functions using good judgement and safe practices. See the following cautionary statements. DANGER ELECTRICAL SHOCK HAZARDS.
ELECTRIC HEATERS • O. & M. PRE START-UP WARNING: Improper installation, adjustments, alterations, service or maintenance can cause injury and property damage, as well as possible voiding of factory warranty. For assistance or additional information, consult a qualified contractor and your local ENVIRO-TEC® representative. RECEIVING AND INSPECTING • Thoroughly examine the exterior and interior of all units for transportation damage. If damage is found, immediately file a claim with the carrier.
O. & M. • ELECTRIC HEATERS ELECTRIC HEAT WARNING LABELS The labels shown below are located on the door of all electric heat units in compliance with our ETL listings to UL 1995 and CAN/CSA C22.2 No. 236. Adherence to these warning labels prevents possible injury or damage to equipment and/or property. Disconnect Hazard Labels Ensure that all power has been disconnected prior to servicing equipment. CAUTION HAZARD OF ELECTRIC SHOCK.
ELECTRIC HEATERS • O. & M. POWER WIRING L1 L2 L3 N Ground CONTROL WIRING Stages Step 1 Red Step 2 Purple Step 3 Orange Step 4 Brown Fan Output Black Black Red Blue White Green TRANSFORMER WIRING Primary Voltage (same as Power Wiring) SECONDARY 24 Volt Negative Yellow Positive Blue NOTE: Units with wire gauges 8 AWG and greater will be color coded with electrical tape.
O. & M. • ELECTRIC HEATERS TROUBLESHOOTING GUIDE (ENVIRO-TEC and Tutco) • Check installation instructions and wiring diagrams to ensure heater is wired and installed properly. COMMON SYMPTOMS Heater Does Not Operate Low or High Temperature Rise Short Cycling Heater w/SSR Does Not Operate POSSIBLE CAUSE REMEDY No Power No Control Voltage • Check disconnect • Check control signal (i.e.
ELECTRIC HEATERS • O. & M. PROPORTIONAL HEAT CONTROL (SSR) TROUBLESHOOTING GUIDE | ENVIRO-TEC HEATERS | CAUTION: Lethal voltages are present in the heater control enclosure. Use extreme caution when taking measurements in these units. Always disconnect power before removing or re-applying any connections. 1. Before applying power, verify wiring matches diagram in cover of heater control enclosure, and that correct line voltage has been wired to heater line block. 2.
O. & M. • ELECTRIC HEATERS PROPORTIONAL HEAT CONTROL (SSR) TROUBLESHOOTING GUIDE | TUTCO HEATERS, ALL POWER MODULES | NO DEMAND, ex. 277 Vac L1 Optional C24 Module N Fuse 0 Vac or Element -0 Vdc 0 Vac 277 Vac + • Install the ammeter on the line voltage input wire of heater. • This is your primary source of information to know if the heater is operative or not. • A multimeter set in Ohms cannot be used to confirm that the high voltage contact of a power module is closed.
ELECTRIC HEATERS • O. & M. PROPORTIONAL HEAT CONTROL (SSR) TROUBLESHOOTING GUIDE | TUTCO HEATERS, R820 SCR’S | NO DEMAND, ex.
O. & M. • ELECTRIC HEATERS ENVIRO-TEC HEATERS, Typical Wiring Diagram Not to be used for submittal or actual field wiring purposes.
ELECTRIC HEATERS • O. & M. ENVIRO-TEC HEATERS, Typical Wiring Diagram Not to be used for submittal or actual field wiring purposes.
