Nortec GS - Page 37

31Installation
Nortec GS
2583703_EN_1608
CAUTION!
Risk of damage to the gear clamp.
Do not over-tighten the gear clamp. The maximum torque value for gear clamps is 16 in·lbs
(180 N·cm).
– Do not combine multiple steam lines, except at the steam distributor. Use a Nortec adaptor specically
designed for that purpose, and only if the humidiers connected to the adaptor operate in parallel.
– To minimize formation of condensation, the steam pipe must be insulated with a minimum of 1 in
(25 mm) of pipe insulation over its entire length.
– The weight of the steam pipe must be supported so there is no load on the humidier.
WARNING!
Risk of severe burns from contact with hot steam vapors!
Restrictions in the cross-section of the steam line will cause excessive backpressure in the
steam tank when the unit is operating, which may cause unexpected release of hot steam va-
pors. Bare skin exposed to the hot steam vapors can result in severe burns. In addition, excess
backpressure also affects performance of the unit.
Prevention: Observe the following:
• Upon completion of the installation, purge the steam line to remove any contaminants and
installation materials.
• The steam hose (if used) must not have any kinks or other restrictions.
• To prevent condensate pockets, the steam line must not sag. If necessary, support the steam
line with pipe clamps, trough, or wall brackets, and install a condensate drain at the lowest
point in the steam line.
• DO NOT install a shutoff valve (e.g. a manually operated shutoff valve, solenoid valve, etc.)
in the steam line.
Table 13: Equivalent Length of Typical Steam Line Fittings
Nominal Tube
Size
Standard 90°
Elbow
Standard 45°
Elbow
Side-Outlet Tee
1.75 in (45 mm) 3.5 ft (1.1 m) 1.75 ft (0.5 m) 7 ft (2.1 m)
3 in (75 mm) 5 ft (1.5 m) 2.5 ft (0.8 m) 11 ft (3.4 m)
4 in (100 mm) 8 ft (2.4 m) 4 ft (1.2 m) 15 ft (4.6 m)
Figure 13:
Minimum Upslope 10
o
Minimum Downslope 2
o
Min.
300 mm
300 mm
Min.
300 mm
300 mm
Minimum
Downslope
1.2
o
Steam Line Condensate Drain Line
12 in
(300 mm)
2 in
(50 mm)
12 in
(300 mm)
½ in
(12 mm)
1 in
(25 mm)
48 in
(1.2 m)
1 in
(25 mm)
48 in
(1.2 m)
Minimum
Downslope
1.2
o
Steam and Condensate Line