Nortec GS - 5.3 Site Requirements

18 Installation
2583703_EN_1608 Nortec GS
5.3 Site Requirements
In preparation for installation of the Nortec GS humidier ensure that the following site requirements are
satised. Report any discrepancies to the site engineer.
Steam and Condensate Lines
 The location of the Nortec GS humidier is largely dependent on the location of the steam distributor,
the exhaust vent pipe and the air intake pipe. To minimize heat loss through the steam line, choose
the location of the humidier so that it is as close as possible to the steam distributor.
 Keep the length of the steam line as short as possible. When possible, install the humidier below
the steam distributor. Make sure that the selected location permits proper routing of steam and
condensate lines. Refer to "Best Practices for Installing Steam and Condensate Lines" on page 30 for details.
Mounting
 The space in which the humidier is to be installed must allow adequate clearances for ease of
maintenance, and must be easily accessible for servicing. Refer to "Clearances" on page 20 for the
required and suggested clearances. Adhere to all local and national installation codes. Nortec is not
responsible for any installation code violations.
 The Nortec GS humidier is designed to be oor-mounted, with the exception of the GS 50/100 unit
which comes with a oor stand that also converts to mounting bracket for wall-mounting. The GS 150-
600 units can also be mounted on an optional oor stand. The oor must be level if mounting the
unit on the oor. If wall-mounting the compact unit, choose a wall or other suitable vertical surface
that offers a sufciently high load-bearing capacity – refer to maximum operating weight in Table 11
on page 21 for weights. 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 humidier. Care must also
be taken to ensure that the unit is not mounted above sensitive equipment or walkways.
 Do not mount the humidier on wooden oors, carpeting or near combustible materials. Adhere to
all local and national installation codes.
 Do not mount the humidier on vibrating surfaces, or near hot surfaces or surfaces that can freeze.
 The Nortec GS humidier must be installed in a drip-proof location within buildings, where the ambi-
ent temperature is 41-104 °F (5-40 °C) and the relative humidity is 5-80% (non-condensing). The
selected location must also protect all electrical components in the humidier from water damage.
Water Supply
 The water supply to the humidier must be cold potable drinking water or demineralized water, with
a ow rate of 2.6 gpm (10 L/min) for Nortec GS 50-300 unit or 5.3 gpm (20 L/min) for Nortec GS
450/600 unit. The water quality requirements are listed in Table 6.
Table 6: Water Quality Requirements
Water Type Hardness
gpg (PPM)
Alkalinity (pH) Chloride (PPM)
Potable 0-15 (0-256) 5-8 0-50
Treated 0-0.99 (0-17) 5-8 0-50
 The water supply line to the humidier must have a minimum diameter of 1/2 in (13 mm) with a 1/2 in
NPT female end. The line must also have a shutoff valve and a union tting for ease of maintenance.
 The water supply should be ltered to 5 μm (optional, but recommended) and pressure regulated to
30-80 psig (207-550 kPa). If necessary, a surge arrestor should be installed if pressure surges occur.
 For best performance, water temperature should be 34-59 °F (1-15°C), and maximum temperature
must not exceed 77 °F (25 °C).
 The piping material must be pressure-proof and certied for use with drinking water systems. If using
demineralized water, the piping must be made of either plastic or stainless steel (minimum DIN 1.4301).
 The water supply should be free of additives such as corrosion inhibitors, disinfectants, etc., which
may affect the performance of the humidier.