15 | Installation
Table 5: Maximum Recommended Length of Steam Line
Unit Size
Steam Output
(Lb/hr)
Distance
(ft)
Possible Loss
(lb/hr)
Steam Line Size
(in)
NH-005 5 8
1.0
3/4
NH-010 10 15
1.5
3/4
NH-020 20 20 *
2.0
3/4
NH-030 30 25 *
2.5
3/4
NH-050 50 40 **
4.0
1 1/2
NH-075 75 50 **
5.0 to 10.0
1 1/2
NH-100 100 50 **
5.0 to 10.0
1 1/2
NH-150 150 50 /cylinder **
5.0 to 10.0
1 1/2
NH-200 200 50 /cylinder **
5.0 to 10.0
1 1/2
NOTE: * Use one inch copper steam line for longer runs.
** Use two inch copper
steam line for longer runs.
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.
Figure 9: Condensate Traps
Route condensate back to humidifier fill cup if possible. Condensate will be
returned to cylinder from fill cup.
Condensate should not be routed to a sink used frequently by personnel. Route to
a floor drain or equivalent. Condensate normally cools in traps but is still hot. A
SAMe or larger steam line generates more condensate and water may not cool in
the trap. A drain water cooler option may be installed if required by code.
12 in. (30 cm)
min drop to
top of ‘P’ Trap
P Trap min
6 in. (15 cm)
or
duct static
pressure + 2 in
whichever is
greater
Tee is same size
as steam line
Use a full size tee, not a 90
degree elbow for vertical
to horizontal transitions.
‘P’ Traps Use:
- NORTEC 0.375 in condensate hose
- 1/4 in Med-L copper tubing, or
- 0.375 in stainless steel tubing
Condensate drains must be sloped down.
Route to humidifier fill cup if possible.
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