WIRING DIAGRAMS

Figure 4 – Humidity and Sensors

HM

DHM

 

 

Humidification Terminal,

De-energizes on call for

Energizes on call for

Dehumidification to

heat if Humidity setpoint

lower the fan speed.

is above room humidity.

The DHM terminal is

Can also be used to

only used on systems

provide humidification

with a compatible

independent of a call for

dehumidification feature

heat and/or in cooling

that have the required

mode if Automatic

terminal connection on

Humidification is

the contol module or

selected in Configura-

have a relay installed to

tion Menu item #34

lower the fan speed

 

 

+

S

-

 

 

 

Supply voltage

Remote

Supply voltage

to remote

temperature

to remote

temperature

sensor signal

temperature

sensor

 

sensor

 

 

 

Dehumidification wiring without an electronically controlled variable speed blower system for single stage compressor system only.

If you have a single stage compressor system see the dia- gram below. A relay (customer provided) should be installed as shown in Fig 7 to switch the fan speed to the next lower speed on a call for dehumidification from the thermostat. The reduction in air flow allows the coil to remove more humidity from the air. The relay should be rated for blower motor load. Since this configuration reduces the air flow in cooling, the

anti-freeze-up control (White-Rodgers CAFC) or equivalent is recommended. The CAFC prevents the air conditioning coil from freezing due to low air flow, dirty filters, low refrigerant pressure, etc. The CAFC snaps onto the suction line close to the evaporator coil as possible and breaks the compressor circuit when the suction line drops below 38°F­ and re-make the circuit at 46°F.

Figure 5 – Typical Wiring for Dehumidifier System

 

 

 

Normal High

DHM

 

 

 

 

 

No

Med

 

Relay

 

 

 

1

 

90-293Q

2

Low

 

or equivalent

NC

Dehum

 

 

 

 

 

Speed Fan

N

“Cool Fan Output”

“Heat Fan Output”

 

 

1Normal Cool speed position (DHM energized)

2 Dehum speed mode (DHM de-energized)

N

HM

Humidifier

System

 

Figure 6 – Typical Wiring for 120V Humidifier System

 

HM

 

 

R

 

Relay

 

 

HOT

 

90-290Q

 

 

 

or equivalent

24 VAC

 

120 VAC

 

 

NEUTRAL

Humidifier

HOT

 

TRANSFORMER

 

NEUTRAL

120 VAC

 

System

 

 

 

 

Figure 7 – Typical Wiring for 24V Humidifier System

R

24 VAC

 

 

 

 

 

 

 

HOT

120 VAC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NEUTRAL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TRANSFORMER

4

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Emerson Process Management 1F95-1291 specifications VAC 120 VAC, 24 VAC
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1F95-1291 specifications

Emerson Process Management has established itself as a leader in providing innovative automation solutions to various industries. One of its notable offerings is the 1F95-1291, a highly advanced and reliable component specially designed for process control systems. This device is essential for optimizing operational efficiency and enhancing the performance of various industrial applications.

One of the main features of the 1F95-1291 is its robust design, which ensures reliability even in harsh industrial environments. The device is carefully constructed to withstand high levels of vibration, temperature fluctuations, and other challenging conditions. This durability reduces downtime and maintenance costs, allowing operators to focus on productivity.

Technologically, the 1F95-1291 integrates seamlessly with Emerson's extensive suite of control systems, providing compatibility and ease of integration. Its advanced communication capabilities allow it to interface with various field devices, enhancing the overall functionality of the automation system. The device supports various industrial communication protocols, ensuring versatile connectivity options that meet the diverse needs of modern industries.

The 1F95-1291 also features sophisticated algorithms that enable real-time data processing and analysis. This capability empowers operators to make informed decisions based on accurate and timely information. The built-in diagnostics function continuously monitors the system's health, providing alerts and insights that help in preemptive maintenance planning.

A standout characteristic of the 1F95-1291 is its user-friendly interface, designed to simplify operation and reduce training time. The intuitive display allows users to access critical information quickly, facilitating efficient management of operations. Additionally, firmware updates are easily manageable, ensuring that users can take advantage of the latest advancements without significant downtime.

In summary, Emerson Process Management's 1F95-1291 is a cutting-edge solution that exemplifies the company's commitment to innovation, reliability, and user-centric design. With its robust construction, advanced technologies, and user-friendly features, the 1F95-1291 is an essential asset for any organization seeking to enhance its process control capabilities and drive operational excellence. The device's adaptability to various industrial environments further underscores its value, making it a preferred choice among professionals in the field.
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