Detroit Radiant Products Company DES3 Series - Manual (Page 20)

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Reflector Assembly
3.0 Installation • Reflector Assembly
To install the reflectors (see figure 3.16):
Attach the reflector center supports onto radiant tubes. NOTE: On models equipped with a single
reflector center support, place at mid-point of primary combustion chamber.
Slide each reflector section through the hangers and adjust the reflector tension spring (if applicable)
into the V-groove on the top of the reflector. The reflectors should overlap approximately 4 inches.
To prevent the reflectors from shifting, secure the reflector sections together using sheet metal screws,
except at the expansion joint (see Chart 3.6).
NOTE: Installer to supply sheet metal screws.
Attach reflector end caps (if applicable), with polished finish inward, to each end of the reflector run.
Secure with clips.
Reflectors, and reflector accessories, direct infrared energy to the floor level. The reflector assembly
depends on the heater configuration, proximity to combustibles and space surrounding the heater.
Before you begin assembly, determine if the use of reflector accessories are necessary (see Chart 3.5).
SERVICE ACCESS PANE L CONTROLS & GAS VA LVE COMP ARTMENT 1. Disconnect gas & electricity . 2. Remove four (4) thumbscrews . 3. Remove top cove r. 4. Swing hinged panel downward. KEEP COVER IN PLACE. REMOVE FOR SER VICE ONLY.
SERVICE ACCESS PANEL FAN COMPARTMENT
1. Disconnect gas & electricity. 2. Remove top cover (2 thumbscrews). 3. Remove tsix (6) 1/4” screws. 4. Lift and remove panel. KEEP COVER IN PLACE. REMOVE FOR SERVICE ONLY.
Figure 3.16 • Reflector Assembly
Reflector
4” Overlap
Reflector Center
Support
Radiant
Tube
Hanger
and Chain
Reflector End Cap
Reflector Tension
Spring
Clips
13.75”
Figure 3.17 • Width of Installed Reflector - Top View
2
1
3
4