Table 1. Troubleshooting Symptoms

System

What to Check

Why

 

 

 

Nothing is happening when the

Main power is on and matches the

No, or improper voltage can cause the

on/off switch is turned on

specified voltage on the specification label.

electronics or components not to respond.

 

 

 

 

24 VAC output from the step-down

24 VAC is required to power nearly all the

 

transformer. Check high and low voltage.

components of the humidifier, including the

 

 

electronics.

 

 

 

 

Ensure that fuses in the humidifier and on

The fuses are in place to prevent damage

 

the electronic boards are good. Ensure

to the electronics. If there was a surge the

 

that 24 VAC is getting to the main board.

fuse may have blown to prevent damage

 

 

to the unit.

 

 

 

 

Door interlock open.

The door interlock has malfunctioned.

 

 

 

The unit will not fill or fills very

Water supply is on and water pressure is

The proper water volume and pressure

slowly (less then 1” per minute)

between 30 to 80 psig

must be available as the valves in the NH

 

 

unit rely on its pressure to control volume

 

 

and operation. NORTEC recommends 55

 

 

to 60 PSIG.

 

 

 

 

Unit is getting a demand signal or the unit

The unit will not activate the fill valve

 

is producing the required steam capacity.

without a demand for humidity. It will also

 

See ensuring demand Table 2.

only fill as necessary once there is a

 

 

demand. Once it reaches the requested

 

 

demand, it will stop filling.

 

 

 

 

No leak at drain valve or around cylinder.

The cylinder is held in by gravity and

 

Check for water coming out of the drain.

sealed by an O-ring. If not properly seated,

 

Check the fill valve inlet.

it could leak and prevent the unit from

 

Check fill valve strainer.

filling.

 

Check optional inline filter.

Drain stuck open

 

 

 

 

Pressure in the steam line could also

 

 

prevent filling causing the water in the fill

 

 

cup to overflow to drain.

 

 

Strainer is clogged.

 

 

Fill valve may also be restricted after

 

 

capturing debris in its filter.

 

 

 

Unit will not humidify or is not

Unit is getting a demand signal. Refer to

Unit will not send power to the cylinder

reaching requested capacity.

Table 2.

without a demand and safeties met.

 

 

 

 

Capacity is manually limited.

The unit will not surpass the capacity

 

 

dictated by the user in the software.

 

 

 

 

Cylinder is full.

The unit will not fill further than a full

 

 

cylinder. Operation requires it to try to

 

 

concentrate the conductivity, which may

 

 

take several hours, before it reaches full

 

 

capacity.

 

 

 

Unit has faulted or has a

Check Table 3, Faults and Warning Codes

Each code is identified and each has

warning

 

individual causes and solutions.

 

 

 

10-40

Page 57 2008-08-28

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Nortec NH Series installation manual Troubleshooting Symptoms, System What to Check Why
Page 63 Page 65

NH Series specifications

The Nortec NH Series stands as a remarkable line of heating and cooling equipment designed specifically for commercial and industrial applications. Renowned for its efficiency, reliability, and innovation, the NH Series is engineered to meet the demanding needs of various environments, including hospitals, educational institutions, and office buildings.

One of the standout features of the Nortec NH Series is its modular design. This flexibility allows for easy integration into existing systems, making it an ideal choice for both new installations and upgrades. The modular setup not only enhances space efficiency but also allows users to scale the system according to their specific requirements. This adaptability is essential for facilities looking to optimize their HVAC systems without extensive renovations.

The NH Series incorporates advanced technologies that set it apart in the market. It employs high-efficiency heat exchangers made from durable materials that provide exceptional thermal performance. These heat exchangers facilitate rapid heat transfer while maintaining energy efficiency, lowering operational costs. Additionally, the unit features variable-speed fans that adjust airflow according to real-time demands, contributing to quieter operation and further energy savings.

Another noteworthy characteristic of the NH Series is its intelligent control system. The integrated controls offer user-friendly interfaces and compatibility with building management systems. This enables operators to monitor and adjust settings remotely, enhancing operational efficiency and ensuring optimal indoor climate conditions.

Furthermore, the Nortec NH Series is designed with sustainability in mind. It complies with stringent environmental regulations and utilizes eco-friendly refrigerants, reducing the overall carbon footprint of the facility. This commitment to sustainability resonates with businesses looking to enhance their green credentials while maintaining a comfortable environment.

In summary, the Nortec NH Series exemplifies innovation in HVAC technology, combining modular design, high-efficiency heat exchangers, variable-speed fans, intelligent controls, and sustainable practices. These features make it a top choice for professionals seeking reliable and efficient heating and cooling solutions for a variety of commercial applications. With the Nortec NH Series, users can achieve significant energy savings, enhanced comfort, and a positive impact on the environment.
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