Table 2. Ensuring A Demand Signal

 

 

Check

Why and How

 

 

Safety Loop (terminal 1

The safety loop is checked to ensure that it is safe to operate. Checking to see 24 VAC from

and 2) is closed

terminal 1 to ground, and terminal 2 to ground should indicate whether is closed.

 

If found to be open, isolate which component in the safety loop is open to solve the issue. If

 

suspect, confirm that it is connected and operating properly.

 

 

Channel 1 has a signal.

Whether for on/off or modulating, a voltage potential signal must be present between

 

terminal 3 and 4 for the humidifier temperature.

 

If on/off there should be 5 VDC.

 

If VDC modulating, at least 25% of total possible signal must be present.

 

If mA controlled, at least 25% of total possible signal must be present.

 

If Transducer signals, the unit setpoint must be higher then the sensed room RH signal.

 

 

Channel 2 has a signal

Only applicable if configured to accept dual channel input.

 

If VDC modulating, at least 25% of total possible signal must be present.

 

If mA controlled, at least 25% of total possible signal must be present.

 

If Transducer signals, the high limit setpoint must be higher than the sensed RH signal.

 

 

2. TROUBLESHOOTING DISTRIBUTORS

CAUTION

KEEP IN MIND WHEN TROUBLESHOOTING DISTRIBUTORS THAT

THEY ARE BEING USED WITH STEAM AND THEREFORE, ARE AND

CAN REMAIN VERY HOT DURING THE TROUBLESHOOTING

PROCESS.

A.TROUBLESHOOTING ATMOSPHERIC DISTRIBUTORS

(1)If the distributor is spitting out water, ensure that the distributor is installed level and check the condensate return for proper slope, check head above the trap, and check the trap that it is clear of obstructions.

(2)If the distributor is condensing inside the duct, make sure the installation clearances are as indicated in Chapter 10-10 Installation, and make sure that the design conditions have not changed. If over humidification of the duct results, check controls and safeties (ensure safeties are properly installed and functioning).

3.SAM-e TROUBLESHOOTING

A.PROCEDURE

(1)If the SAM-e is spitting out water, ensure that the distributor is installed per instructions in Chapter 10-10 Installation and check the condensate return for proper slope and trap and that it is clear of obstructions. The condensate return must be the lowest point of the SAM-e header.

10-40

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Nortec NH Series installation manual Troubleshooting Distributors, Ensuring a Demand Signal, Procedure, Check Why and How
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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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