Nortec NH Series installation manual 10-10, Maximum Recommended Length of Steam Line

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-italicfont 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.

10-10

Page 14 2008-08-28