5 | Introduction
NHTC/PC Models
The NHTC with its Total Controller and state-of-the-art features and options is the most
advanced electrode steam humidifier available. The base model NHPC provides steady and
reliable humidification using the same proven cylinder technology as the NHTC. The NHTC/PC is
available in capacities ranging from 5 lb/hr (2 kg/hr) to 200 lb/hr (90 kg/hr). NHTC/PC
humidifiers are packaged in three different cabinets depending on their capacity. Figure 2,
NHTC/PC Models shows the configuration and relative size of the three different cabinets. Both
the NHTC and NHPC models up to 100 lb/hr (45 kg/hr) are also available with a built on blower
pack. Table 2 provides specifications for the NHTC/PC product line.
Figure 3: NHTC/PC Models
Double Unit (NHTC/PC 150-200)
NHTC/PC double units have two cylinders to provide increased capacity. The construction and
installation of double units is identical to units with a single cylinder with the following
exceptions;
In addition to having two cylinders double units also have two driver boards (designated A
and B). One driver board controls each cylinder. (see Figure 3: NHTC/PC Models).
Double units can operate both cylinders in parallel from a single set of control signals or
independently based on two sets of control signals (see Multi Mode on page48 for
configuration instructions).
Independent Operation - If configured for independent operation then 2 sets of control
wiring must be provided. Control wiring for each cylinder must be connected to the
cylinder’s corresponding driver board/terminal strip and each cylinder performs
independent of the other.
Parallel Operation - If configured for parallel operation then only one set of control wiring is
required and the cylinders operate in parallel.
Double units have one primary power connection but have individual fill, drain, and steam
outlet connections for each cylinder.
A
A
B
B
Fill Connections Drain Connections
NHTC
PC 150-200 NHTC
PC 050-100 NHTC
PC 005-030
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