R7426A,B,C TEMPERATURE CONTROLLER WITH AND WITHOUT REAL-TIME CLOCK

Time Out

After approximately 10 min of inactivity (no button has been pressed: time out), each mode returns automatically to standard display mode. Inputs that have not been confirmed

by the SET button are ignored by the controller and old parameter values will be retained.

A

ON CONTROLLERS

We

 

WITH REAL-TIME

 

CLOCK, ONLY

Date

 

 

We

 

°C

°C

°C

B

*) THE OUTPUT DATAS (Y1, Y2, AND Y3) ARE DISPLAYED BETWEEN THE FOLLOWING RANGES:

OUTPUT TYPE

CONTROL RANGE

FLOATING

0...

100%

...0

10VDC

...0

100%

...2

10VDC

...0

100%

 

 

B

 

 

 

 

A

TIME &

°C

 

SUBMASTER / LIMIT SETPOINT

 

 

WEEKDAY

 

 

CTRP2

DATE

°C

 

COMPENSATION

 

 

 

 

TEMPERATURE T3

 

 

 

MAIN

 

% rh

HUMIDITY

 

 

TEMPERATURE T1

 

 

DEVIATION XWrh R7426B,C, ONLY

MAIN SETPOINT

 

%

OUTPUT Y1 *)

 

 

CTRP1

 

 

 

 

 

LIMITATION / CASCADE

 

%

OUTPUT Y2 *)

 

 

TEMPERATURE T2

 

 

 

 

 

 

 

 

R7426B,C, ONLY

 

 

%

OUTPUT Y3 *)

 

 

 

OUTPUT RANGE

 

A

 

0...100%

 

 

0...120% --> 0...12V (DIR)

*) DURING THE AUTOMATIC SYNCHRONIZATION FOR A CORRECT

-20...100% --> 12...0V (REV)

-25...125% --> 0...12V

POSITIONING OF THE ACTUATORS, Syn IS DISPLAYED TOGETHER

WITH THE CORRESPONDING OUTPUT NUMBER.

Fig. 8. Standard display mode

13

EN1B-0203GE51 R0507C

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Image 13
Honeywell R7426A, R7426B, R7426C dimensions Time Out, Standard display mode

R7426C, R7426A, R7426B specifications

Honeywell's R7426 series comprises three advanced models: R7426B, R7426A, and R7426C. These devices are designed to optimize control for HVAC applications, emphasizing energy efficiency, ease of use, and superior control capabilities. Each model incorporates unique features and technologies catering to specific system requirements while maintaining common foundational characteristics.

The R7426B is engineered with a microprocessor-based control system, allowing for precise temperature management across varied environments. It supports a range of heating and cooling applications, making it versatile in both residential and commercial settings. The unit boasts dual-stage heating and cooling capabilities, ensuring optimal comfort by allowing for gradual temperature changes. It also includes an easy-to-read LCD display for user-friendly navigation and parameter adjustments.

R7426A enhances functionality with additional communication technologies. This model incorporates Honeywell's proprietary communication protocols, enabling seamless connection with smart thermostats and home automation systems. This ensures users can monitor and control their HVAC systems remotely, leading to enhanced energy management and convenience. R7426A also includes advanced diagnostic capabilities that simplify troubleshooting and maintenance processes.

R7426C further extends the capabilities of the series by integrating state-of-the-art sensors for real-time environmental monitoring. These sensors continuously track indoor air quality parameters such as humidity and particulate matter levels, allowing for immediate adjustments to maintain optimal indoor conditions. The model is also equipped with smart algorithms that learn user preferences over time, automatically adjusting settings to enhance comfort and efficiency.

Common features across the R7426 series include robust construction for long-lasting performance and compatibility with a wide range of HVAC systems, including heat pumps and conventional heating systems. Each model supports programmable settings, enabling users to create schedules that align with their unique lifestyle or business needs. Safety features, including freeze protection and delay timers, are integrated to safeguard against potential system failures.

Overall, the Honeywell R7426B, R7426A, and R7426C models represent a significant advancement in HVAC control technology. With their focus on efficiency, automation, and user-centric design, these devices help users achieve optimal climate management in their spaces while minimizing energy consumption. Whether for residential comfort or commercial efficiency, these models stand out as reliable solutions in the HVAC market.