Nortec Industries NHRS Series User Manual
Page 20
10-20
Page 3
2008-02-18
(4) Extra
Material
(a)
Furnish extra materials described below that match products installed and
that are packaged with protective covering for storage and identified with
labels describing contents.
(5) References
(a)
ANSI/NFPA 70 - National Electrical Code.
(6) Coordination
(a)
Coordinate location and installation of humidifiers in ducts and air-handling
units. Revise locations and elevations to suit field conditions and to ensure
proper humidifier operation.
XXXXX OR XXXXX
(a)
Coordinate location and installation of humidifier in the space it serves with
the electrical, mechanical, and plumbing contractors.
B. PRODUCTS
(1) RESISTIVE
STEAM
HUMIDIFICATION SYSTEM NORTEC MODEL NHRS
(a)
Packaged unit, wall mounted, electric steam generating system, suitable for
use with potable, De-Ionized (DI), and Reverse Osmosis (RO) water. UL
Listed
(b)
Methods of distribution require a steam distributor[s] or Short Absorption
Manifold [s] [SAM-e] for mounting into AHU/duct[s] or Remote Mounted
Blower Pack[s] [RMBP] for direct space applications [refer to options
schedule].
(c)
Includes stainless steel tank and fill through plastic base to control water
stratification by filling at the bottom. Top filling is not acceptable.
(i)
Incoloy based resistive heating elements are used to produce steam.
Steam production is fully variable from 0 to 100%.
(ii)
Control accuracy of up to ±1% using DI/RO water, optional SSR control,
and precise humidistat on all models.
(iii) Keypad programming to configure monitor and control humidifier with
information messages on alphanumeric LCD display.
(iv) Unit water level is to be continuously monitored with a dual magnetic
electronic float system, located outside of the boiling water to ensure
accurate water level control and reduced maintenance. Cool fill water is
to be supplied into the sensing chamber to keep the device cool.
Systems using conductivity probes or floats located within hot reservoir
water are not acceptable.
(v)
Self-diagnostics during start-up of system to prevent unsafe operation
on the unit(s).
(vi) Fill valve check.