Steam Distribution
Install Requirements
1. Steam lines must not have any restrictions which
could result in back pressure.
2. Follow recommended materials, size and length, see
table.
3. Slope the steam lines a minimum of 2” for every 12”
horizontal run against the flow of steam and 0.5” for
every 12” horizontal run with the flow of steam.
4. Insulate copper or SS tube with 1.0 in. (2.5 cm) pipe
insulation.
5. Trap low points in steam line with full size ‘T’ fittings,
and off of the distributor condensate connection.
Condensate traps must be a minimum of 3 in. in
height or duct static pr 2 in. (whichever is
greater) and drop a minimum of 12 inches prior to the
top of the trap.
6. Do not over tighten hose clamp at cylinder steam
outlet. The maximum torque is 12 in-lbs.
7. Support the steam line so the weight does not rest on
the cylinder.
Voltage
Steam Output
lbs/hr (kg/hr)
Material
∗
Maximum
Steam Line
Length
ft (m)
Possible
Losses
lbs/hr (kg/hr)
Nortec Steam
Hose
No
MED-L Copper
Tube
Stainless Steel
Tube
110-120V
5 (2.3)
Part Number
1328810 (7/8”)
3/4”
0.875 X
0.049W
7 (2)
0.5 (0.2)
208V
8.7 (3.3)
10 (3)
1 (0.5)
220-240V
10 (4.6)
12 (3.5)
1.5 (0.7)
Oversized Steam Line (used for longer steam runs)
∗∗
110-120V
Not
recommended
Not
Recommended
1”
1.125 X
0.049W
Not Recommended
208V
8.7 (3.3)
12 (3.5)
2 (0.9)
220-240V
10 (4.6)
24 (7)
3 (1.4)
∗
The use of steam line other than copper, stainless steel tube or Nortec supplied steam line will void the warranty
and may adversely affect the operation of the humidifier.
∗∗
T
hese diameters require a reducer at humidifier and steam distributor connection. Use Nortec part number
1115444 at humidifier to prevent backpressure caused by condensation collecting at the reduction.
Steam
Direction
Steam
Direction
Steam
Directio
n
2 in.
(5 cm)
1 ft (30 cm)
1ft (30 cm)
0.5 in.
(12 mm)
10 Degrees
2 Degrees
Use Appropriate Slope
Insulate Pipe
1 in. (2.5 cm) pipe
insulation
