Nortec NH Series User Manual

Page 21

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10-10

Page 14

2008-08-28

Table 1. Maximum Recommended Length of Steam Line

Unit Size

Steam Output

Distance

Possible Loss

Steam Line Size

NH-005

5 lbs/hr

8 feet 1.0

lbs/hr

3/4

NH-010

10 lbs/hr

15 feet 1.5

lbs/hr

3/4

NH-020

20 lbs/hr

20 feet *

2.0 lbs/hr

3/4

NH-030

30 lbs/hr

25 feet *

2.5 lbs/hr

3/4

NH-050

50 lbs/hr

40 feet **

4.0 lbs/hr

1 ½”

NH-075

75 lbs/hr

50 feet **

5.0 to 10.0 lbs/hr

1 ½”

NH-100

100 lbs/hr

50 feet **

5.0 to 10.0 lbs/hr

1 ½”

NH-150

150 lbs/hr

50ft/cylinder **

5.0 to 10.0 lbs/hr

1 ½” cyl

NH-200

200 lbs/hr

50ft/cylinder **

5.0 to 10.0 lbs/hr

1 ½” cyl

* Use one inch copper steam line for longer runs.
** Use two inch copper steam line for longer runs.

Notes:

1. This table gives the maximum recommended steam run by unit size.

2. The use of steam line other then copper, stainless steel tube or Nortec supplied steam line will void the

warranty and may adversely effect the operation of the humidifier

3. The NH-150 and NH-200 are dual units.

Table 2. Steam Line Materials

NORTEC Steam Line

Copper Tube (Potable)

Stainless Steel Tube

(RO or DI)

Short Run < 10 feet (3m)

yes

yes

yes

Long Run > 10 feet (3m)

no

yes

yes

NOTE

Do not use plastic, steel, or black iron. Long runs affect accuracy of humidifier and its ability to quickly
respond to changes in demand when tight control is required.

Table 3. Recommended Materials and Sizes for Steam Runs

Unit Size

Steam Run

Steam Line Material

Steam Line Description

lbs/hr kg/hr ft m

0-30

0-13 0-10

0-3

Copper Tube

0.750 in MED-L Tubing (0.875 inch OD)

0-30

0-13

30+

3+

Copper Tube

1.0 inch MED-L Tubing (1.125 inch OD)

0-30 0-13

0-10

0-3 Stainless

Steel

Tube

0.875 inch Tube x 0.049 inch thick

0-30

0-13

30+

3+

Stainless Steel Tube

1.125 inch Tube x 0.049 inch thick

50-100

22-45 0-20

0-6

Copper Tube

1.500 in MED-L Tubing (1.625 inch OD)

50-100

22-45 20+

6+

Copper Tube

2.0 inch MED-L Tubing (2.125 inch OD)

50-100

22-45 0-20

0-6

Stainless Steel Tube

1.750 inch Tube x 0.065 inch thick

50-100

22-45 20+

6+

Stainless Steel Tube

2 inch Tube x 0.065 inch thick

NOTE

Options show in bold-italic font require that reducers be used at both ends. These extra large sizes are
to allow for better condensation removal in long steam runs. These sizes do not permit the use of hose
couplings to connect either humidifier or distributors.
Insulate steam lines with 1” pipe insulation.

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