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Installation, Operation and Maintenance Manual
Please read and save these instructions for future reference. Read carefully before attempting to assemble,
install, operate or maintain the product described. Protect yourself and others by observing all safety
information. Failure to comply with instructions could result in personal injury and/or property damage!
These instructions apply to installation of duct heaters for zero clearance installation in ducts. They are approved
for use with heat pumps, air conditioners, or other forced air systems and may be controlled by contactors, relays,
sequencers, or solid state devices.
The duct heaters are pre-wired, have voltage ratings of 600 volts, both single phase and three phase. The duct
heaters are furnished with integral controls.
Receiving and Handling
Upon receiving dampers, check for both obvious
and hidden damage. If damage is found, record all
necessary information on the bill of lading and file
a claim with the final carrier. Check to be sure that
all parts of the shipment, including accessories, are
accounted for.
Dampers must be kept dry and clean. Indoor storage
and protection from dirt, dust and the weather is
highly recommended. Do not store at temperatures in
excess of 100°F (38°C).
This manual is the property of the owner and is required for future maintenance. Please leave it with the owner when
the jobs is complete.
Document Number 478052
Table of Contents
General Information ...................................... 2
Installation .................................................... 2
Electrical Requirements ................................. 3
Minimum Air Velocities .................................. 3
Insulated Duct Installations .......................... 4
Step Controllers .......................................... 5
Troubleshooting Guide ...............................6-8
Safety Warning
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, injury
or death. Read the installation, operating, and
maintenance instructions thoroughly before installing
or servicing this equipment.
IDHB & IDHC
Duct Heaters
Electric Duct Heaters
1
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Summary of Contents for Greenheck IDHB
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Page 1: Table Of Contents
Document Number 478052 IDHB & IDHC ® Duct Heaters Installation, Operation and Maintenance Manual Please read and save these instructions for future reference. Read carefully before attempting to assemble, install, operate or maintain the product described. Protect yourself and others by observing all safety information. -
Page 2: General Information
The air duct should be installed in accordance with the Standards of the National Fire Protection Agency for the Installation of Air-Conditioning and Ventilating Systems IDHB and IDHC series are intended for installation (Pamphlet No. 90A) and Warm-Air Heating and Air- in accordance with electric heaters requirements Conditioning Systems (Pamphlet No. -
Page 3: Electrical Requirements
Electrical Requirements 22,000 Refer to attached wiring diagram and wiring diagram on inside of cover. Make sure line and control voltage of 20,000 system matches that noted on wiring diagram. Wire in accordance with N.E.C. and any existing local 18,000 codes. -
Page 4: Insulated Duct Installations
Insulated Duct Installations Duct with External Insulation The external insulation is to be removed from the area where the heater is mounted. Note: Size of heater is based on the duct size (no recess required). Duct with Internal Insulation S-type with internal insulation left in place or duct constructed from insulation board Note: Size of heater is based on the following: Heater ‘H’... -
Page 5: Installation Details With Ssr Or Electronic Step Controllers
Installation Details for Electric Duct Heaters Equipped with SSR’s or Electronic Step Controllers (including SSR Vernier Control) This heater is designed to accept an analog control signal. The heater will need to be supplied with either a 0 to 10 VDC, 2 to 10 VDC or a 4 to 20 mA signal. Note: This heater will not operate with a standard 24 VAC control signal. -
Page 6: Troubleshooting Guide
Troubleshooting Guide A duct heater must be installed according to the EXAMPLE: IF 780 fpm IS REQUIRED installations instructions, wiring diagram and labeling CORRECT 780 fpm supplied with the heater. 780 fpm MIN. AIRFLOW AND EVEN AIR Listed below are some important items when installing DISTRIBUTION ARE PRESENT 780 fpm an electric duct heater:... - Page 7 Troubleshooting Guide cont..10. Order the heater with the factory installed AIR HANDLER linear temperature limit control if the heater 48" MIN. width is greater than 72 inches. DUCT 11. Never use aluminum conductors. Use copper conductors only for all incoming wiring. 12.
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Page 8: Troubleshooting Guide
INCORRECT FIG. 12 Our Commitment As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications without notice. Specific Greenheck product warranties are located on greenheck.com within the product area tabs and in the Library under Warranties.