16
Installation
2582302_C_EN_1611
Nortec EL
Water temperature should be 34-104°F (1-40°C).
The diameter of the water supply piping should be minimum 1/2 in (13 mm), and must have a 1/2 in
NPT female end.
The water supply line should be made of copper, stainless steel or plastic certified for drinking water
systems.
A shutoff valve and a union fitting must be supplied in the water supply line for ease of maintenance.
The water supply should be free of additives such as corrosion inhibitors, disinfectants, etc., which
may affect the performance of the humidifier. If using softened or partially softened water, contact
your Nortec representative for assistance.
Drainage
The humidifier should be connected to a dedicated building drain (recommended) with a minimum
drainage rate of 2.3 gal/min (8.7 L/min) per steam cylinder. For safety reasons, drain water from the
humidifier should not empty into a sink used by personnel. The drain line must allow free and easy
draining. A restricted drain can cause water in the humidifier to over-concentrate and result in poor
operation, or cause water to back up at the air gap funnel.
The building drain pipe should be made of either copper or stainless steel (minimum DIN 1.4301)
so it can handle drain water temperatures up to 212 °F (100 °C).
The space in which the humidifier is to be installed should have a floor drain. However, if a floor drain
is not available, a leakage monitoring device must be installed (by others) to permit interruption of
the water supply in case of a leakage.
Power Supply
The power supply to the humidifier should be adequate to match the full voltage and current draw
shown on the specification label of the humidifier.
The power supply must have an external dedicated fused disconnect switch. The fusing must not
exceed the maximum circuit protection indicated on the specification label. Refer to
Figure 3 on page 9
.
5.4
Mounting the Humidifier
Refer to
"Site Requirements" on page 15
for the location and mounting requirements for the
Nortec EL steam humidifier.
5.4.1 Location and Clearances
The location of the humidifier depends largely on the steam distribution system. For the required minimum
clearances for a Nortec EL steam humidifier with a built-on blower pack refer to
"Placement of Humidifier" on
page 24
; or refer to the blower pack manual for a remote-mounted blower pack.
For all other steam distribution systems refer to
Figure 6
. The clearance dimensions shown are for refer
-
ence only, and are suggested clearances for ease of maintenance. Consult local and national installation
codes. Nortec does not accept responsibility for violations of the installation codes.