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10-10
Page 8
2008-10-01
1.
HUMIDIFIER INSTALLATION
A.
LOCATION AND MOUNTING
(1) NH Outdoor Series humidifiers are UL listed for outdoor installation and come
complete with internal cooling for the electronics. An internal heater is standard
and ensures the enclosure remains at proper operating temperatures.
Additionally, a freeze protection system is available for use in cold climates.
(2) The NH Outdoor Series humidifiers can be mounted on an air handler, on an
appropriately sized curb, or on a wall or vertical surface. The clearance
dimensions shown in this guide are for reference only and are the minimum
required for maintenance of the humidifier. Local and National Codes should be
consulted prior to final location and installation of the humidifier. NORTEC cannot
accept responsibility for installation code violations. The minimum required
maintenance clearances are shown in Figure 1.
(3) Humidifiers typically operate in the cold winter months. As a result they should be
located where it is safe and convenient for maintenance personnel to service the
unit. This is essential as it may be less desirable to service the unit during
inclement weather. The warranty does NOT cover damage resulting to humidifier
as a result of neglect or freezing. NH Outdoor series should NOT be installed on a
rooftop in severe climates or where temperatures reach below 14°F (-10°C).
Please refer to Table 1: Weather Design Data in this document.
(4)
It is also important to consider the length and location of the humidifier steam line
that will result from the installation. Consult section 10-10 in the NH Series Indoor
Installation guide for further information on steam lines.
B. AIR HANDLER MOUNTING
(1) The NH outdoor series features provisions for hanging on brackets (supplied).
This allows the unit to be mounted directly to a vertical wall on an air handler unit.
This installation is advantageous since the steam piping is shorter, and hence the
condensate losses and backpressure are minimized. Typical air handler
installations are shown in Figure 2. Additionally, observe the following precautions
when installing the humidifier:
(a) Ensure that the surface selected to mount the humidifier is structurally sound
and capable of supporting the entire weight of the humidifier when in
operation.
(b) For minimum required maintenance clearances see Figure 1.
(c) Wall mounting bracket provided should be securely attached horizontally with
open edge upwards, using field-supplied fasteners.
(d) Using proper lifting techniques, lift the humidifier onto the brackets to mount
it. Several people may be required to lift the unit.
(e) Ensure that both the bracket and humidifier are mounted level.
(f) Do not store or use gasoline or other flammable vapors and liquids in the
vicinity of the humidifier.