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®
Chromalox
DIVISION 4 SECTION DH
SALES
REFERENCE (Supersedes PF455-2) PF455-3
161-562766-001
DATE
FEBRUARY, 2001
Chromalox Electric Airduct Heaters
with Fintube Heating Elements
W
W
Conduit
Entrance Plate
H
H
DHII
DHIF
Integral Controls
Integral Controls
Insert Type
Flanged Type
Figure 1
Figure 3
W
W
H
H
DHRI DHRF
Remote Controls Remote Controls
Insert Type Flanged Type
Figure 2 Figure 4
GENERAL
These heaters are designed to be installed in either a horizontal Please read these directions caref
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Air Flow GENERAL Limitations: Ductwork must be in accordance with one of the fol- 4. Installation near turns. (Refer to Figure 8). If heater must be lowing: Standards of the National Fire Protection Association for installed closer than 4 feet from the downstream side of a turn, the installation of Air Conditioning and Ventilating Systems of turning vanes must be installed in the turn. The turning vanes other than Resident Type (Pamphlet 90A) or Residential Type will straighten out the air flow
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GENERAL 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 Flexible Duct (Must be suitable mesh, expanded or perforated sheet metal of 50% open area as for 195°F) shown in Figure 11. This will maintain a uniform air velocity across the face of the duct. Inner Baffle Insert Type Perforated Metal Duct Heater (50% Open Area) Duct Heater 4 Ft. Min. Figure 12 10
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MOUNTING 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. Two to six duct heaters (with flange) may be installed in a hor- izontal or vertical duct. Heaters must be mounted in the position designated by arrows on the heater frame. (Refer to Figure 16). The heater terminal
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MOUNTING Mounting Procedure — DHIF Double (Flanged heaters with control box) Lip Self-Adhesive Gasket 1. At heater location, cut out a section of duct, or a new con- Supplied with Heater and 3/4" struction lay out duct work to accommodate dimensions of Installed by Customer heater. 3/4" Duct 2. Form mounting flanges on cut edges of duct as shown in Figure 17. Omit flange in side when terminal box overhangs. D 3. Position heater in duct and attach duct lip to heater flanges with sheet metal screw
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WIRING 1. Connect heater only to the voltage, frequency and phase spec- ified on the nameplate. 2. All wiring should be done according to local and National Hazard of electrical shock. Any installation involv- Electric Codes. ing electric heaters must be grounded to earth to 3. Make supply connections to marked heater terminals using eliminate shock hazard. wire suitable for 75°C. (Type RH-RW or equivalent). 4. Conduit attachment to heater: Control Ratings a. Run conduit(s) to conduit entrance p
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CATALOG NUMBER DESIGNATION SYSTEM O O O O - O O O - 0 0 H X 0 0 0 W - X 0 0 . 0 0 D - 0 0 0 V 0 0 P - 0 0 0 . 0 kW 2 000.0kW, (16kW/Ft. MAX.) Phase: 1P = Single Phase’ 3P = Three Phase 0 = Number of circuits 000V = Heater voltage (up thru 600V) 00.00 = Depth of heater frame in inches (06.50 min. – 36.00 max.) 000W = Width of duct in inches (08 thru 120) 00H = Height of duct in inches (06 thru 40) Terminal box construction and terminal box and frame material: GPA = General purpos
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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
