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STEAM INJECTION INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Maxi-bank option piping notes
MAXI-BANK HUMIDIFIER
8. If steam pressure is less than or equal to 15 psi (103.4 kPa),
use float and thermostatic (F&T) traps for the humidifier.
If steam pressure is greater than 15 psi (103.4 kPa), use
inverted bucket traps for the humidifier.
If lifting condensate, use an inverted bucket trap and check
valve regardless of steam pressure (see Figure 12-1).
9. The header trap is required to collect condensate from the
header assembly. Due to the pressure drop across the valve,
the steam pressure at the header trap is minimal; therefore,
you cannot lift condensate by steam pressure, or return
condensate to a pressurized return, from this trap. On small
headers (2" or less in diameter), this trap may be omitted.
10. X = distance between tubes, center to center
Y = clearance at top and bottom = at least ½ X or 4½"
(114.3 mm), whichever is greater, but not greater than X
See the “Minimum tube spacing distance” table on Page 38.
11. See “Pressurized steam piping guidelines” on Pages
12. Drawings represent right-hand discharge.
13. See Table 28-1 for header sizing.
