Summary of Contents for Enviro IOM-EDH
- Page 1 LECTRIC EATERS NSTALLATION PERATION AINTENANCE ANUAL Stock ID: IOM-EDH Reprinted June, 2001 ©2001 Environmental Technologies, Inc. Largo, FL • Part No. PX-00-0141...
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Page 2: Table Of Contents
• I.O.M. LECTRIC EATER ABLE OF ONTENTS DESCRIPTION PAGE Pre Start-Up ............................3 Receiving and Inspection ........................3 Unit Placement ...........................3 Clearance ............................3 Electric Heater Warning Labels ......................4 Minimum Air Velocities Open Coil Construction.........................5 Finned Tubular Construction ......................5 Heater Installation Instructions Side Slip-In ............................6 Insulated ............................6 Flanged ............................7 Round Duct ...........................7... -
Page 3: 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 •... -
Page 4: Electric Heater Warning Labels
• I.O.M. LECTRIC EATER LECTRIC ARNING ABELS The labels shown below are located on the door of all electric heat units in compliance with our ETL listings to UL 1996 and CAN/CSA C22.2 No. 155. Adherence to these warning labels prevents possible injury or damage to equipment and/or property. CAUTION CAUTION DISCONNECT THE ELECTRIC... -
Page 5: Minimum Air Velocities
I.O.M. • E LECTRIC EATER INIMUM ELOCITIES 1600 1400 1200 1000 KW/SQ FT. ONSTRUCTION M/MIN. 304.8 1000 274.2 243.6 213.0 HORIZONTAL AIRFLOW 182.4 152.4 121.8 VERTICAL AIRFLOW 91.2 INLET AIR TEMPERATURE 77°F, 25°C 60.6 30.0 KW/SQ FT. 15.5 Maximum Kw/Sq. Ft. INNED UBULAR ONSTRUCTION... -
Page 6: Heater Installation Instructions
• I.O.M. LECTRIC EATER NSTALLATION NSTRUCTIONS Figure 2 Figure 1 Vertical Duct Heater Horizontal (Type VS) Duct Heater Vertical Up (Type SS) Airflow Only Model EDHSS (Side Slip-In, Vertical Slip-In) Installation of the slip-in heater consists of cutting an opening in the duct approximately 1/4" larger than the height and width of the heater element section. -
Page 7: Flanged
I.O.M. • E LECTRIC EATER NSTALLATION NSTRUCTIONS Figure 4 Flange Heater Model EDHSF (Flanged) Installation (Type SF) Flanged heaters are designed with the flanges turned out. Installation of the side flanged heater consists of inserting the flanged duct heater section into the duct and bolting in place. Raintight Heaters are sealed in a flanged section. -
Page 8: Minimum Wire Gauge
• I.O.M. LECTRIC EATER MINIMUM WIRE GAUGE (from Table 310-16 NEC 1996 wire rated 75°C) AMPERES MINIMUM WIRE GAUGE AMPERES MINIMUM WIRE GAUGE 14 AWG 2/0 AWG 12 AWG 3/0 AWG 10 AWG 4/0 AWG 8 AWG 250 kcmil 6 AWG 300 kcmil 4 AWG 350 kcmil... -
Page 9: Ampere Reading Per Kw
I.O.M. • E LECTRIC EATER Figure 6 Airflow Switch Probe Reversal AMPERE READING PER KW VOLTAGE/PHASE AMPERES/KW 120 / 1 8.33 208 / 1 4.80 240 / 1 4.16 277 / 1 3.61 480 / 1 2.08 208 / 3 2.77 240 / 3 2.40... -
Page 10: Sample Submittal Wiring Diagrams
• I.O.M. LECTRIC EATER Electric Duct Heater IOM • ©June, 2001 • Environmental Technologies, Inc. - Page 11 I.O.M. • E LECTRIC EATER Environmental Technologies, Inc. •©June, 2001 • Electric Duct Heater IOM...
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Page 12: Troubleshooting Guide, Proportional Heat Control (Ssr)
2. Verify 24 VAC +15% or -10% between P1 and P2 of interface circuit board (ETPHCI, ETPHCT, etc., depending on input). 3. If the heat control is used with an ENVIRO-TEC ® duct or wall stat, verify +18 VDC + or -0.5 VDC between the terminals labeled +18 and COM on the interface circuit board, and terminals 1 and 2 of the thermostat. - Page 13 I.O.M. • E LECTRIC EATER 8. If the heater always remains energized when power is applied, remove the wire from P4 of the interface circuit board. If the heat remains on, there is a wiring error or the SSR is defective. CAUTION: Remove Power From the Unit Before Proceeding With the Next Step.
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Page 14: Troubleshooting Guide, Vernier Heat Control
(7 through 14) and touch to terminal 15. If relay stays off, check heater wiring; otherwise, replace controller. REPLACEMENT PARTS • Replacement parts should be ordered from the local ENVIRO-TEC ® representative. Factory replacement parts must be used to maintain agency listings. Any substitutions and/or modifications not authorized by the factory will void the unit warranty, the agency listing, and could result in personal injury and/or property damage. -
Page 15: Important Safety Precautions
I.O.M. • E LECTRIC EATER 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 prop- erty while installing or operating this equipment, it is essential that qualified, experienced personnel per- form these functions using good judgement and safe practices.
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