Nortec NHTC User Manual
Page 14
10-00
Page 6
2008-10-01
B. NH CAPACITY ADJUSTMENT
(1)
Each NORTEC NH Series humidifier is rated at its maximum output capacity. By
means of the alphanumeric display and keypad on the NHTC/NHPC, the
humidifiers can be adjusted to obtain an output between 20% and 100% of its rated
capacity.
C. DRAIN CYCLE AND CYLINDER LIFE
(1)
Water Type Used (Potable or Softened)
(a)
The electrode steam product line is one of the most efficient humidifier
systems since it uses the minerals in the water to conduct electricity. If no
minerals are present no current can pass from one electrode to another, thus
no steam production can occur.
(b)
Although the electrode steam humidifier is ideal for potable water, it should
not be used with pure reverse osmosis or deionized water since the
conductivity is too low.
(2)
Water Conditions vs Cylinder Life
(a)
The NH Series is designed to adapt to most potable or softened water
supplies. Since the output of all NH Series humidifiers is pure, clean steam,
minerals originally in the incoming water are left behind in the steam cylinder.
Many of these minerals will be removed during short flush cycles within the
cylinder. Therefore, the water chemistry, the unit running time, and output
capacity setting ultimately determines the cylinder life. (See Figure .)
(3)
Output vs Cylinder Life
(a)
As minerals build-up on the electrodes in the cylinder of the NORTEC NH
Series humidifier, the patented P+I Auto-Adaptive control system
automatically raises the water level slightly in the cylinder. This exposes fresh
electrode surface to the water and maintains peak output and efficiency from
the humidifier. Once the
(b)
electrode surface is completely encrusted by the minerals, the user is alerted
to change the cylinder. Other humidifiers’ performance degrades gradually as
the minerals build-up. The NH Series maintains maximum efficiency then the
cylinder is replaced. (See Figure .)
(4)
Water Conditions vs Drain Rate
(a)
The P+I Auto-Adaptive control system automatically adjusts the drain rate to
maintain the design water conductivity required for proper operation. This
ensures regular flushing of minerals which become concentrated in the water,
and minimizing wastage of hot water. The humidifier automatically adjusts it’s
drain rate with changes in incoming water conductivity through the Auto-
adaptive water management system.