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Chromalox
Chromalox Electric Airduct Heaters
W
H
DHII
Integral Controls
Insert Type
Figure 1
W
H
DHRI
Remote Controls
Insert Type
Figure 2
These heaters are designed to be installed in either a horizontal
or vertical duct in one of the six positions shown in figure 16. The
heater is constructed with individual metal sheath fintube elements
mounted to a heavy gauge metal terminal box.
Due to the various options and materials available, check the
nameplate attached to the heater terminal box with the catalog
number designation system on page 7 before installing to insure
the heater you received conforms to your specification.
© 2010 Chromalox, Inc.
with Fintube Heating Elements
®
DIVISION
SALES
REFERENCE
DATE
Conduit
Entrance Plate
H
DHIF
Integral Controls
Flanged Type
Figure 3
H
Remote Controls
Flanged Type
GENERAL
Please read these directions carefully to insure all limitations
are properly observed and all wiring and controls are properly
installed and connected.
IMPORTANT — Observe at least one complete heating cycle
operation before leaving the installation.
4
DH
SECTION
(Supersedes PF455-2)
161-562766-001
FEBRUARY, 2001
W
W
DHRF
Figure 4
PF455-3
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Summary of Contents for Chromalox PF455-3
- Page 1 Chromalox Chromalox Electric Airduct Heaters with Fintube Heating Elements DHII Integral Controls Insert Type Figure 1 DHRI Remote Controls Insert Type Figure 2 These heaters are designed to be installed in either a horizontal or vertical duct in one of the six positions shown in figure 16. The heater is constructed with individual metal sheath fintube elements mounted to a heavy gauge metal terminal box.
- Page 2 Air Conditioning and Ventilating Systems of other than Resident Type (Pamphlet 90A) or Residential Type Warm Air Heating and Air Conditioning Systems (Pamphlet 90B). Location: Chromalox Duct Heaters may be located anywhere in the duct system. NOTE: The minimum distances shown are limitations. Wherever possible, locate as far away from these limits as practical.
- Page 3 7. Installation in duct larger than heater. For installation where the duct dimensions exceed the insert type heater dimensions, the area beyond the heater dimensions must be filled with wire mesh, expanded or perforated sheet metal of 50% open area as shown in Figure 11.
- Page 4 Multiple Duct Heaters: Up to six duct heaters may be combined into a heating bank as shown in Figure 15. When called for on order, brackets will be furnished for fastening flange type duct heaters together to form a bank. Heater will be coded for proper assembly in the field.
- Page 5 Mounting Procedure — DHIF (Flanged heaters with control box) 1. At heater location, cut out a section of duct, or a new con- struction lay out duct work to accommodate dimensions of heater. 2. Form mounting flanges on cut edges of duct as shown in Figure 17.
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Page 6: Wiring Diagram
Air Flow Switch Automatic and Manual Reset (not shown) Contact your local Chromalox Sales Office with Complete heater catalog number or part number. WIRING Hazard of electrical shock. Any installation involv- ing electric heaters must be grounded to earth to eliminate shock hazard. - Page 7 CATALOG NUMBER DESIGNATION SYSTEM O O O O - O O O - 0 0 H 00H = Height of duct in inches (06 thru 40) Terminal box construction and terminal box and frame material: GPA = General purpose terminal box and all aluminized steel construction GPP = General purpose terminal box and all painted steel construction GPZ = General purpose terminal box and all plated steel construction GPS = General purpose terminal box and all stainless steel construction...
- Page 8 Limited Warranty: Please refer to the Chromalox limited warranty applicable to this product at http://www.chromalox.com/customer-service/policies/termsofsale.aspx. 2150 N. RULON WHITE BLVD., OGDEN, UT 84404 Phone: 1-800-368-2493 www.chromalox.com...