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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 these instructions will result in voiding of the product warranty and may result in personal injury
and/or property damage.
These instructions apply to zero clearance installation of electric duct heaters within 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.
Greenheck duct heaters are pre-wired, factory tested, and furnished with integral controls.
Receiving and Handling
Upon receiving heater, check for both obvious and
hidden damage. Check all insulators for breakage and
inspect heater element wire(s) for any deformation
or damage that could cause a sort circuit to
ground. Make sure all fasteners are tight. Electrical
connections such as pressure terminals should be
checked for tightness. 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.
Heaters 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).
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.
This manual is the property of the owner and is required for future maintenance. Please leave it with the owner when
the job is complete.
Table of Contents
General Information . . . . . . . . . . . . . . . . . 1
Electrical Requirements. . . . . . . . . . . . . . . 2
Minimum Air Velocities . . . . . . . . . . . . . . 2-3
Installation. . . . . . . . . . . . . . . . . . . . . 4-5
Insulated Duct Installation . . . . . . . . . . . . . 6
Installation Details with SSR Controllers . . . . . . 7
Troubleshooting Guide . . . . . . . . . . . . . . 8-9
General Information
IDHB and IDHE series are intended for installation
in accordance with electric heaters requirements
established by:
National Fire Protection Association
NFPA Standards 90A and 90B
NFPA Standard 70
"UL Listed (see complete marking on product)
ANSI/UL Standard 1996 (File E366239)
Refer to:
"Installation Supplement for Outdoor Heater
Applications (Document #484166) for additional
details.
Document 478052
IDHB and IDHE
Duct Heaters
Electric Duct Heaters
1
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Summarization of Contents
General Information
Receiving and Handling
Instructions for inspecting and storing the duct heater upon receipt to ensure proper condition and prevent damage.
Safety Warning
Critical warnings regarding improper installation, alteration, or maintenance that could lead to property damage, injury, or death.
Installation
Duct Orientation
Guidelines on the proper vertical and horizontal placement of heaters within ductwork for optimal airflow and performance.
Control Cabinet Orientation
Instructions for positioning the control cabinet for accessibility and proper ventilation, specific to IDHB and IDHE models.
Insulated Duct Installations
Duct with External Insulation
Procedures for installing heaters in ducts with external insulation, including required modifications to the insulation.
Duct with Internal Insulation
Guidelines for installing heaters in ducts with internal insulation, detailing recess requirements and heater sizing adjustments.
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