Steam lines, Ed in the – Nortec Blower Packs User Manual
Page 15
Blower Pack Installation Guide | 12
Steam Lines
Prior to connecting the steam hose ensure proper inlet size.
The following instructions must be followed for installation of steam lines for remote blower packs.
Failure to use material recommended in Table 3, exceeding maximum recommended length in
Table 3, or failure to follow any other steam line installation instructions will result in improper
operation and could void the warranty.
Table 3. Recommended Steam Line Material*, Maximum Length, Losses
NH-EL
Maximum Steam
MED-L
Stainless
Possible Steam Losses
Model
Line Length
Copper
Steel
(based on 1” insulated copper
pipe)
ft
(m)
Tube
Tube
lb/hr/ft
(kg/hr/m)
5**
7
(2)
3/4
0.875 X 0.049W
0.06
(0.09)
10**
12
(3.5)
20**
17
(5)
30**
22
(6.5)
50
43
(13)
1 1/2
1.75 X 0.065W
0.11
(0.16)
75/150***
47
(14)
100/200***
50
(15)
Oversized Steam Line (Use for longer steam runs)****
5**
14
(4)
1
1.125 X 0.049W
0.06
(0.09)
10**
24
(7)
20**
34
(10)
30**
44
(13)
50
86
(26)
2
2.0 X 0.065W
0.11
(0.16)
75/150***
94
(28)
100/200***
100
(30)
Nortec Steam Hose
5-30**
10
(3)
Pt No 1328810 (7/8”)
0.1
(0.15)
50-200***
10
(3)
Pt No. 1328820 (1 3/4”)
0.15
(0.22)
Note: * 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
** These specific models will require the steam line to be expanded at blower pack. See Options for steam line adapters.
*** Use steam line per cylinder for NH-EL 150-200 humidifiers. Do not combine lines except at distributor using a Nortec adapter designed
for that purpose and only if humidifiers operate in parallel.
**** These diameters require a reducer at humidifier and steam distribution connection
Danger:
Installing any humidifier in such a way that backpressure can develop during
operation could result in serious injury or damage to property.