Schwank S100 Installation & Owner's Manual page 19

SPECIAL COUPLING: 100,000 Btuh x 20 ft and 175,000 & 200,000 Btuh
9.3
For all other firing rates refer to Sections 9.1 (Straight Tubes) or 9.2 ('U'-Tubes)
NOTE: The joint between tubes of the 100,000, 175,000 & 200,000 heaters experience
strong forces of expansion. Follow instructions below for Special Coupling of the tubes.
TOOLS REQUIRED
 ¼" Drill Bit (supplied)
COUPLER INSTALLATION - Perform prior to reflector installation - See Figure 14 below
1. Slide the loosened tube coupler on to the first tube, past the swage
2. The second tube is supplied with a ¼" hole in the side of the tube at the female end.
3. Slide second tube over swaged end of first tube so that ¼" hole is located in the
'side' of the tube, at 90° from the bottom surface of tube
4. Through the existing ¼" hole in the second tube, drill a ¼" hole through the wall of
the first tube
5. Insert ¼" rivet into the hole
6. Slide coupler into position – half onto each tube – covering the rivet head
7. Tighten coupler bolts to 40 ft-lb
8. Install reflectors
FIGURE 14 - SPECIAL COUPLING
Steps 1 to 4
NOTE: The turbulator for the 175,000 LP heater must always be in the 5th tube.
Turbulators for all other inputs are ALWAYS installed at the vent end of the heater.
NOTE:
100,000 Btuh x 20 ft Heater
During installation ensure
that the turbulator located in
the second tube is oriented
in a vertical position, and lo-
cated fully to the vent end of
the tube.
This will result in the best
performance and
output from the system.
Electric Drill

Step 5
radiant
19
1/4" Rivet
Step 6
S100/ITB I&O Manual
IM101230
RD: JAN 2012
RL: 6B- BA