Detroit Radiant Products Company HLV Series - Manual (Page 24)

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HLV Series
Figure 3.7 • Attach Tube Clamps
Tube Clamp
IMPORTANT! 170,000 to 200,000 BTU/h models must be
installed with a stainless steel tube clamp (P/N: TP-220) located at
the seam between the primary combustion chamber and the
second tube section downstream of the burner control box.
NOTE: If the tube clamp comes
apart, the spacer
must be
re-assembled with the spacer’s
concave surface facing against
the radiant tube surface.
Concave surface
1 Place tube clamps directly over tube seams (Figure 3.8).
2 Slip-fit the radiant tube sections together until tightly connected (install the swaged end of each tube
towards vacuum pump).
NOTE: If it is difficult to mate the tubes, they may be misaligned.
3 Center tube clamps over the seam where two radiant tube sections connect. If necessary, rotate tube
clamps so they will not interfere with the reflector end caps during expansion and contraction of
the heater.
4 Tighten tube clamp bolts to secure. When proper compression is obtained (40-60 ft.-lbs. torque) the
tube seam will create a visible mark on the tube clamp. NOTE: Excessive torque may damage the
tube clamp.
Figure 3.8 • Tube Connections
Tubes fit snuggly together and the
tube clamp is centered over the seam.
Tubes are not fit snuggly
together and the tube clamp is
not centered over the seam.
The tube clamp is tight when the
torque is achieved (normally
when seam becomes visible).
Correct Tube Connection Incorrect Tube Connection
3.0 Installation • Tube Assembly and Mounting • Tube Clamps