E
LECTRIC
D
UCT
H
EATERS
I
NSTALLATION
, O
PERATION
AND
M
AINTENANCE
ANUAL
Stock ID: IOM-EDH
Reprinted June, 2001
©2001 Environmental Technologies, Inc.
Largo, FL • Part No. PX-00-0141
Page 1: ...ELECTRIC DUCT HEATERS INSTALLATION OPERATION AND MAINTENANCE MANUAL Stock ID IOM EDH Reprinted June 2001 2001 Environmental Technologies Inc Largo FL Part No PX 00 0141...
Page 2: ...tion 5 Finned Tubular Construction 5 Heater Installation Instructions Side Slip In 6 Insulated 6 Flanged 7 Round Duct 7 Remote Control Panel 7 Minimum Wire Gauge 8 Field Wiring 8 Preventative Maintena...
Page 3: ...the thermal safety devices Open coil duct heaters are certified for horizontal airflow in either direction or for vertical up airflow Some heaters may contain position sensitive devices mercury contac...
Page 4: ...TIONS SHOULD THEN BE PERIODICALLY CHECKED FOR TIGHTNESS ALTERNATION OF INTERNAL COMPONENTS OR WIRING WILL FURTHER RESULT IN REMOVAL OF THE PRODUCT LISTING AND VOIDING OF ALL WARRANTIES ELECTRIC HEAT W...
Page 5: ...6 18 20 22 24 KW SQ FT VELOCITY FPM ENTERING AIR Deg F 80 60 40 25 10 0 OPEN COIL CONSTRUCTION 100 200 300 400 500 600 700 800 900 1000 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 KW SQ FT 15 5 Maximum Kw S...
Page 6: ...g an opening in the duct approximately 1 4 larger than the height and width of the heater element section Insert heater and fasten to the duct using sheet metal screws through the control enclosure Us...
Page 7: ...herproof seal must be made when mounting these units Installation of the round duct heater consists of attaching round duct to the inlet and outlet collars and bolting in place Seal connection and duc...
Page 8: ...of nominal heater amperes based on 75 C wire Mount and wire any field installed items as indicated on the factory supplied wiring diagram When mounting field installed components do not jumper out or...
Page 9: ...in a too hot or too cold location Check contactors for open coil Check for damaged elements Incorrect CFM Check for blocked duct or location of heater Short Cycling Improper Airflow Check for even air...
Page 10: ...ELECTRIC DUCT HEATER I O M 10 Electric Duct Heater IOM June 2001 Environmental Technologies Inc...
Page 11: ...I O M ELECTRIC DUCT HEATER 11 Environmental Technologies Inc June 2001 Electric Duct Heater IOM...
Page 12: ...o step 5 INTERFACE PULSE FULL OFF FULL ON MODEL INPUT INPUT INPUT ETPHCI 12 0 mA 4 0 mA 20 0 mA ETPHCT 9 1 VDC 8 4 VDC 9 9 VDC ETPHCR 68 0 135 ETPHCV1 7 5 VDC 6 0 VDC 9 0 VDC ETPHCV2 6 0 VDC 2 0 VDC 1...
Page 13: ...onnection shorting to another component or the chassis Briefly reapply power If the section of heat under test now energizes the SSR is defective If heater still will not energize one of the heater sa...
Page 14: ...fication tag as this will be used to program the correct configuration 6 The controller is set for direct acting i e low signal is off high signal is on Apply low signal to J8 terminals 3 and 4 and ve...
Page 15: ...on or shock injuries HOT PARTS HAZARD Electric Resistance heating elements must be disconnected prior to servicing Electric Heaters may start automatically disconnect all power and control circuits pr...
