Honeywell R7426A, R7426B, R7426C dimensions General, Before Installation Note, Mounting

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HONEYWELL

MicroniK 200

R7426A,B,C

TEMPERATURE CONTROLLER

WITH AND WITHOUT REAL-TIME CLOCK

 

INSTALLATION & START-UP INSTRUCTIONS

Fig. 1. Temperature Controller

 

Contents

 

General

1

Before Installation Note

1

Mounting

1

Wiring

2

Power Supply and Grounding

2

Configuration and Control Parameters

3

Configuration Settings

6

Parameter Settings and Adjustment

8

Operating Overview

11

Notes (with RTC, only)

19

GENERAL

This document provides instructions and procedures for installing and starting up the Micronik 200 R7426A,B,C controllers. No special tools are required for mounting and installation. The user interface and liquid-crystal display allow accurate and easy parameter setting and output adjustment.

BEFORE INSTALLATION NOTE

•Visually inspect equipment for shipping damage. Report any damage to the appropriate Honeywell representative.

•Refer to job drawings for specific installation information and mounting location.

•Verify the controllers will be adequately separated from the main power supply, relays, or other equip- ment which can possibly generate electromagnetic interference.

•Verify that the ambient temperature and the humidity at the controllers will not exceed 0...50°C (32...122°F) and 5 to 95% rh.

•Use shielded wiring in areas with high EMI.

•All wiring should be separated from power lines by at least 150 mm (6’’).

•Do not install controllers near frequency converters or other high-frequency sources.

MOUNTING

The controllers can be mounted in an electric cabinet or other suitable enclosure. They are suitable for back panel, DIN rail, wall, or front panel mounting. The corresponding mounting sequence, as well as dimensions and panel cut-out, are illustrated in the mounting instruction sheet EN1B-0202GE51 supplied with the controllers.

If the compensation sensor signal (T3) is received from another controller (parallel connection of compensation sensor inputs), the jumper W303 has to be cut before mounting the controller (see Fig. 2). This disconnects the sensor from the internal power supply.

Copyright © 2007 Honeywell GmbH  All Rights Reserved

 

 

 

 

 

EN1B-0203GE51 R0507C

 

 

 

 

 

 

 

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Contents General Before Installation NoteMounting Power Supply and Grounding WiringTerminal Connection Controller to CPA/SPA potentiometer TerminalConfiguration and Control Parameters Y1CTRF Soffs MinposNoffs Control Point / Setpoint Adjustment Cpatyp C.05 Configuration SettingsOperating Range Selection Ctrltyp C.04 Output Control Range Selection YRange C.06Supply of Temperature Signal T2 T2ext C.12 Output Signal Mode YMode C.11Limit Type LimTyp C.13 Sensor Type Senstyp C.14Parameter Settings Adjustment Throttling range and reset time reference Application Sens Reset Time tr1 / tr2 P.12 / P13Throttling Range Xpc / Xph P.10 / P11 Tr1 Tr2Start Point Ystart P.15 Night Mode Offset Noffs P.26 Controller with RTC onlyCompensation Changeover Point Wcomp P.03 Summer / Winter Compensation Authority Su / Wi P.04 / P.05Return Air Offset RetOffs P.20 Operating OverviewMinimum Position Minpos P.14 Runtimex, x = Y1, Y2, or Y3 P.21...P.23Operating overview Changing Operating ModesTime Out Standard display modeResetting Param. Values to Default Values Adjusting Configuration / Parameter ValuesDisplaying Actual Values Selecting ParametersOutput Selection Mode Example of annual schedule no default Using the Schedules with RTC, onlyDay1 Point Selecting Clock and Schedules with RTC, only Adjusting Date and Time with RTC, onlyProgramming Standard Schedule with RTC, only Programming Holiday Schedule with RTC, only Interpreting Error MessagesAnnual schedule Weekly schedule and holiday types Automation and Control Solutions

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.
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