Nortec NH-EL Series - Manual (Page 40)

37 | Installation
Fill Cup Extension
For installations where duct static pressure exceeds 6 inches a fill cup extension kit is required.
This provides a bracket and hoses for mounting the fill cup above the humidifier. The fill cup
extension kit may be required if water runs to drain while the humidifier is filling. See chapter
on troubleshooting for more information on diagnosing fill problems.
Extreme Drain Water Cooling
For installations where drain water must be cooler than 120ºF (49ºC) a kit is available which
consists of a double fill valve. The second fill valve adds additional water to the drain cup while
the humidifier is draining to cool the water more than the single fill valve.
Note that initiating a drain using the black manual drain switch on the front of the unit will not
induce drain water cooling as it is controlled using software. See Drain Cool on page 55 for
details.
Condensate Cooling (External)
Pneumatic and electric drain water coolers are available from Nortec for installation outside the
humidifier or on condensate drains from steam traps, distributors, and SAMe headers. If
condensate cannot be routed back to the humidifier tank via the humidifier’s fill cup then an
external condensate cooler may be required to meet regulations restricting the temperature of
hot water that can be fed to drain. The external drain water cooler is only available for field
installation.
Foam Protection
NORTEC’s NH-EL includes software detection of foaming which in most cases should be
sufficient to address waters which can cause foaming. For more severe cases, an optional
foam prevention kit is available. The kit consists of an external float chamber, steam outlet,
hose and fittings required for installation. The kit can be factory or field installed.
Internal Fusing
An optional internal fusing kit is available for all models of NH-EL. The kit provides extra internal
protection to the humidifier and must always be used in conjunction with an external fused
disconnect. The Internal fusing option is only available as a factory installed option.
Remote Fault Indication
An optional remote fault kit is available that can provide remote indication of humidifier status.
The kit can be factory or field installed. See Remote Fault Option Wiring on page 33 for more
information about the remote fault indication kit.