Systems With 90° & 180° Elbows - Schwank STW-JZ Owner's Manual

8. SYSTEMS INCORPORATING 90° ELBOWS AND 180° ELBOWS
A radiant tube heater can be installed in configurations as illustrated in FIGURE 4. (below) with
a maximum of two 90° elbows per heater. The use of elbows reduces the total maximum vent
allowable. (See Section 11 : Flue venting)
90° elbows (JS-0528-JZ) are shipped as a kit with one coupler, one reflector and one plate
hanger. For a 180° elbow, order 2 x 90° kits that connect to create a 180°. An optional kit
(JS-0504-JZ) to angle mount a reflector adjacent to an elbow is also available and must be or-
dered separately. The reflectors must be secured to each of the elbow plate hangers, See
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IMPORTANT: Models with input 100 Mbh x 20 ft (30 kW x 6 m) must only be in-
stalled as a straight system with no elbows allowed at the 10 ft (3 m) location.
Elbow Location / Input: A minimum run of straight radiant tube must be con-
nected to the burner before any elbow as follows: Inputs 200,000 and 175,000
= 25 ft (7.6 m); 150,000 = 20 ft (6 m); 130,000 and 110,000 = 15 ft (4.6 m); and
inputs 80,000 and 60,000 a minimum of 10 ft (3 m) straight tube before elbow.
FIGURE 3 SYSTEM ELBOW KIT - see page 53 for 180° elbow dimensions
Angle mounting of the reflector system either side of an el-
bow requires adapter JS-0504-JZ. The elbow always remains
in a horizontal orientation.
FIGURE 4 SYSTEM CONFIGURATIONS
System Configuration
1 Straight line
2 "U" tube with 2 x 90° elbow kits
3 "L" tube with one 90° elbow kit
4 Twinned tubes into common TEE flue vent
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JS-0504-JZ
STW-JZ / IW I&O Manual
IM101229
RL: 12B- BA
RD: AUG 2013