Burner & Tube Installation - Schwank STS-JZ Installation & Owner's Manual

9. BURNER AND TUBE INSTALLATION
PRIOR TO PROCEEDING with the tube installation:
"Suspending the System ", and this section of "IMPORTANT SPECIAL NOTES".
IMPORTANT SPECIAL NOTES: READ FIRST
1. STS-JZ/IQ 100 x 20 ft: Special Tube Coupling - Refer to Section 9.1, Fig 15
2. STS-JZ/IQ 175 & 200: Special Tube Coupling - Refer to Section 9.2, Fig 16
These firing rates have an unpainted titanium alloy stainless steel first tube with a flange
(painted "white"), and an unpainted aluminized steel tube as the second tube; all subsequent
tubes are painted steel. The first tube (titanium alloy stainless steel ) will "glow red" while
heater is in operation - THIS IS A NORMAL CONDITION
3. IF a 90° or 180° elbow is to be installed in the system, refer NOW to Section 8 and the Elbow
Kit installation instructions supplied with the elbow kit
4. TURBULATORS: Also refer to Table page 23
155 Models (150,000 Btuh): 2 ft turbulator supplied in the Burner Kit and field installed:

155 x 40 ft heater: Insert 2 ft turbulator in end of third tube, prior to the 10 ft turbulator
that is factory installed in the last tube (total 12 ft turbulator)

155 x 50 ft heater: Insert 2 ft turbulator in the vent end of the last tube

All other turbulators are factory installed inside tube(s) that are clearly labeled with in-
struction as to where the tube(s) must be installed
200,000 x 60 ft & 70 ft: Remove short piece of turbulator from the upstream end of
Turbulators typically install at the vent end of the heater except 175,000 & 200,000 x 70 ft -
the turbulator tube installs as the 6th tube in the system (50 to 60 ft).
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 (level)
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 (
a) Ensure the 'cavity' side of the hanger faces the burner end of the system
b) The distance between the tube flange and first hanger must be 4.5 inches (11.4 cm)
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 first plate hanger 2.5 inches (6.4 cm) from the tube flange – this provides access
to bolt the burner to the flange, and ensure correct spacing of consecutive system hangers
STS-JZ-F / IQ-F I&O Manual
IM101220
RD: MAY 2014
RL: 17A
turbulator tube prior to installation (see sheet in Primary tube kit)
LOCATE WELDED SEAM FACING DOWNWARD
Read and understand Section 8 -
20
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