Schwank STW-JZ1 - Manual (Page 21)

21
STW-JZ / IW I&O Manual
IM101229
RL: 12A- BA
RD: DEC 2010
9.
BURNER AND TUBE INSTALLATION
PRIOR TO PROCEEDING with the tube installation: Read and understand Section 8 -
“Suspending the System ”
1. STW-JZ/IW 175 & 200: Special Tube Coupling - Refer to Section 9.1, Fig 13
These firing rates have an unpainted alumatherm first tube with a flange (painted
“white”), and an unpainted aluminized steel tube as the second tube; all subsequent
tubes are painted steel
3. IF a 90° or 180° elbow is to be installed in the system, refer NOW to Section 7
and the Elbow Kit installation instructions supplied with the elbow kit
4. If a turbulator is required it is always located at the vent end of the system. Turbula-
tors are factory installed inside tube(s) that are clearly labeled with instruction as to
where the tube(s) must be installed - See Section 27
ALL MODELS: INSTALL THE FIRST AND SECOND TUBES (FROM BURNER END) WITH THE
WELDED SEAM (ALONG THE TUBE LENGTH) FACING DOWNWARD
1) All hangers must be:
a) Suspended at the same height = horizontal alignment of tubes
b) In a straight line = vertical alignment of tubes
c) Spaced 116" (295 cm) apart = correct spacing for reflector attachment
d) Orient hangers with the “cavity side” facing the burner end of the system (except the last
plate hanger at the vent end = the cavity side faces the vent)
2) Insert the swaged end of the first tube (tube with flange) through the 4" (10 cm) hole in the first
plate hanger (WELDED SEAM FACING DOWNWARD) – FIGURE 3
a) Ensure the ‘cavity’ side of the hanger faces the burner end of the system
b) Slide a Torctite tube coupler past the swage onto the tube
 The final position of the coupler will be on the ‘burner-end’ side of the hanger
c) Guide the tube into the second hanger (webbed) – ensure the cavity side of the hanger
faces the burner end of the system
d) Position the first plate hanger 2.5 inches (6.4 cm) from the tube flange – this will provide
access to bolt the burner to the flange, and ensure correct spacing of consecutive system
hangers
e) Check that the first tube is level
3) Install a focus shield reflector over the first tube - secure with sheet metal screws to the
hanger at each end
4) Install three reflector stabilizers on the bottom of the reflector
a) Equally space stabilizers with one at the reflector center point
b) Firmly bend the end tabs on each stabilizer up over the ‘trough’ at each side of the reflector
5) Slide a Torctite tube coupler past the swage onto the next tube to be installed
6) Insert the swaged end of the tube into the next hanger to support its weight
continued ...
SPECIAL NOTES: