Nortec GS Series - Manual (Page 30)

27 | GS Series Installation
Figure 17: Steam Line Connection
Table 5: Steam Line Sizing
Humidifier
Steam
output
[ lb ]
MED-L copper tube
nominal steam
line size
Stainless steel tube
diameter (wall
thickness 0.065”)
Steam loss per foot
in condensation
[ lb/ft ]
Steam line
maximum
equivalent length
GS 100 100 1-1/2” 1-3/4” 0.11 90 ft
GS 200 200 3” 3” 0.16 90 ft
GS 300 300 3” 3” 0.16 180 ft
GS 400 400 4” 4” 0.22 180 ft
GS 500 500 4” 4” 0.22 220 ft
GS 600 600 4” 4” 0.22 260 ft
• Based on 3” duct static pressure, Maximum duct static pressure for GS is 12” w.c.
Table 6: Effective Lengths of Typical Steam-Line Fittings
Nominal tube
size
Standard
90°-elbow
Standard
45°-elbow
Side-outlet
tee
Gate valve* Globe valve*
1-1/2” 3.5 ft 1.75 ft 7 ft 0.8 ft 34 ft
1- 3/4” 3.5 ft 1.75 ft 7 ft 0.8 ft 34 ft
3” 5 ft 2.5 ft 11 ft 1.1 ft 54 ft
4” 8 ft 4 ft 15 ft 1.6 ft 80 ft
*Valve in full open position.