15
Installation
Nortec EL
2582302_C_EN_1611
Note 2:
The drain line should have a minimum internal diameter of 7/8 in (22 mm), with a constant mini
-
mum downslope of 1 in/48 in (1.2°) to the funnel, and must not touch the side or bottom of the funnel.
Note 3:
The air gap and trap should be located to the left of the humidifier, as shown. A 2-1/2 in to 7/8 in
(63.5 mm to 22 mm) reducer is ideal (Nortec option P/N 2522172). The hose must not touch the bottom
of the funnel.
Note 4:
Water supply should be potable drinking water, with conductivity of 150-1200 micro-siemens/
cm (0-12 gpg). The water supply line should have a minimum diameter of 1/2 in (13 mm) with a shutoff
valve. An optional 5 μm filter is also recommended. Water temperature should be 34-104°F (1-40°C).
Pressure should be surge-free and regulated to 30-80 psig (207-550 kPa).
Note 5:
For remote-mounted blower pack, the condensate line can be routed to either an external drain
or to the fill cup of the humidifier. The condensate drain line from the blower pack should have a constant
minimum downslope of 1 in/48 in (1.2°), with no restrictions and a minimum trap height of 8 in (200 mm).
The trap should be located a minimum of 12 in (30 cm) below the condensate port on the blower pack.
5.3
Site Requirements
In preparation for installation of the Nortec EL steam humidifier, make sure that the following site require
-
ments are satisfied. Report any discrepancies to the site engineer.
Steam and Condensate Lines:
When choosing the location of the humidifier, install it as close as possible to the steam distributor
to minimize heat loss through the steam line.
When possible, install the humidifier below the steam distributor. Make sure that the selected loca
-
tion permits proper routing of steam and condensate lines as described in
"Best Practices for Installing
Steam and Condensate Lines" on page 26
.
Mounting
Allow adequate clearances around the humidifier for ease of maintenance. Although the
Nortec EL steam humidifier requires no side clearance, Nortec recommends minimum clearances
of 6 in (150 mm) on the side. A 24 in (610 mm) clearance between the humidifier and the ground is
required. Observe all local and national installation codes. Nortec is not responsible for any instal
-
lation code violations.
Do not mount the humidifier on hot surfaces, or surfaces that can freeze, or near vibrating compo
-
nents, or on the floor. In addition, the mounting surface must be able to withstand temperatures of
140-158°F (60-70°C) that can be generated during operation of the humidifier.
The humidifier should be mounted on a wall or other suitable surface that offers a sufficiently high
load-bearing capacity. Refer to
Table 15 on page 59
for operating weights.
The Nortec EL steam humidifier should be installed in a drip-proof location within buildings, where
the ambient temperature is 41-104°F (5-40°C) and the relative humidity is 5-95% (non-condensing).
Water Supply
The water supply to the humidifier must be cold potable drinking water, and not reverse osmosis
(RO) or deionized (DI) water. The water quality requirements are listed in
Table 4
below.
Table 4: Water Quality Requirements
Conductivity
(
μ
S/cm)
Hardness
(gpg)
Silica
(ppm)
Alkalinity
(pH)
150-1200*
0-12
0-4
7-7.5
0-3
4-14
* Default humidifier configuration supports approximately 330-670
μ
S/cm.
The water supply should have a minimum flow rate of 0.9 gpm (3.3 L/min), and should be pressure
regulated to 30-80 psig (207-550 kPa), with spike pressure limited to 120 psig (827 kPa).
The water supply should be filtered to 5 μm (optional, but recommended).
