(4) Set required value using 0-9 numerical keys. An LED indicates the On/Off status of the output relay. They feature a lockable front-panel touchpad for setup and adjustment, and a Liquid Crystal Display (LCD) for viewing the temperature and status of other functions. h�b```"5�Aʰ�9.0))9)0LMe9�8���'oNX�#4sv�?bV��64��g��e�ݺ���� ٖ8�i[6�5ɶ��E�E鬧[�k��gg�Mm �i��� D @� Line-voltage … Contact. Check for proper voltage to the A421 Control. The A421 Series controls are single stage, electronic temperature controls with a single-pole, double-throw (SPDT) output relay. The A421 Series Electronic Temperature Controls are single-stage, electronic temperature controls with a single-pole, double-throw (SPDT) output relay. The controls feature an adjustable INSTALLATION INSTRUCTIONS 62-0256-11 E4436 T775P Series 2000 Electronic Stand-Alone Controller PRODUCT DESCRIPTION The T775 electronic stand-alone controllers are the next generation of commercial and agricultural controls capable of remote sensing of temperature and providing switched and/or proportional outputs to various types of loads. Room temperature module (6 pages) Temperature Controller Johnson Controls A70 Series Installation Sheets Manual (3 pages) Summary of Contents for Johnson Controls A419 Series. A421 Series Electronic Temperature Controls (Continued) Single-Stage Electronic Temperature Controls Selection Chart A421 Electronic Temperature Control Selection Chart Product Code Number Description A421ABC-02C Line-Voltage Type 1 Electronic Temperature Control: Type 1 (NEMA), IP20 standard enclosure for DIN rail and surface-mount applications. Table 1: Maximum sensor cable lengths and wire sizes Wire gauge 1Maximum sensor cable length 1 16 AWG 500 ft (150 m) 18 AWG 300 ft (100 m) 20 AWG 200 ft (60 m) 22 AWG 125 ft (40 m) Electromechanical and electronic options are available to fit your specific application. Electronic temperature controls with off-cycle defrost, A421 Series Electronic Temperature Controls with, IMPORTANT: Use this A421 Series Electronic. Page 1 A421 Series Electronic Temperature Controls with Off-Cycle Defrost Installation Instructions Part No. a421gbf series a421gef series standard electronic temperature controls (18 pages), Refrigeration controller with adaptive defrost (13 pages), Electronic refrigeration controller with adaptive defrost (57 pages), Type temperature controls with nema 4x raintight enclosures (7 pages), Wall mount refrigeration and defrost controllers (60 pages), Controls for dual pressure applications (8 pages), Single-phase condenser fan speed controls (15 pages), Controls for low pressure applications (21 pages), Manual will be automatically added to "My Manuals", Control Unit Penn A421 Series Installation Manual, Controller Penn A421ABC-03C Installation Manual, Controller Penn A52 Series Installation Instructions Manual, Controller Penn A52 Series Technical Bulletin, Controller Penn A19QSC Installation Instructions Manual, Controller Penn A5 Series Technical Bulletin, Controller Penn P78 Series Installation Instructions Manual, Controller Penn P66AAB-1 Installation Instructions Manual, Controller Penn P266 Series Installation Instructions Manual, Controller Penn A19 Series Mounting And Installation, Controller Penn P70 Series Installation Instructions Manual, Controller Penn P47 Series Installation Instructions, Page 9: A421 Control Parameter Setup Menus. The A421 series controls are single-stage, electronic temperature controls with a Single-Pole, Double-Throw (SPDT) output relay. Electronic Temperature Controls with NEMA 1 or NEMA 4X Watertight Enclosures. Please Share My Video's on Facebook and any other Social media sites with Links to My Video's.Serving--- All of Orange County , California. Lorsqu'une défaillance ou un, dysfonctionnement du A421 control risque de, l'équipement contrôlé ou un autre équipement, la, conception du système de contrôle doit intégrer des, dispositifs de protection supplémentaires. 26. d=��3� q�@��(` >�S� See Table 2 and Table 3 to order A99 sensors, mounting hardware, and other … A Light-Emitting Diode (LED) indicates the controls output relay On/Off status. Rated for 120/240 VAC. The equipment is misused or neglected, 4. For over 100 years, PENN controls have helped customers with their HVACR applications with a full portfolio of temperature, pressure and humidity controls. That core competency is at the heart of Johnson Controls. key once in direct page call. Sample temperature control applications include: The A421 Series Electronic Temperature Controls are single-stage, electronic temperature controls with a … It features a backlit LCD with adjustable brightness and three-button touchpad interface that can be set up to restrict user adjustments. . 1 Applications The A421 Series Electronic Temperature Controls are single-stage, electronic temperature controls with a single-pole, double-throw (SPDT) output relay. 24-7664-3019, Rev. ADO II 5-86: DO-3300 Series Installation Instructions DSG-12 10-09: DSG-1201 Digital Tach/Speed Switch Brochure DSG1201 II 7-95: DSG-1201DU Installation Instructions Over 500 drawings and Technical literature are available on our web site. Manufacturer of Temperature and Pressure Instruments and Controls Since 1882. R-3 Table of Contents Single-Stage Electromechanical Temperature Controls . Standard operating policies and procedures can be effective catalysts to drive performance improvement and improve organizational results. An Led Indicates The Output Relay's On/Off Status. endstream endobj startxref A421 Series Standard Electronic Temperature Controls with Power Cords Installation Guide 5. resistant surface mount enclosures (Figure 2). A421 Series Standard Electronic Temperature Controls with Power Cords Installation Guide brand PENN Controls prodname A421 Standard Model doctype Installation Guide docpartnumber 24-7664-3027 docrev D revised_modified 2019-01-24. 1 Description The A421 Series controls are single stage, electronic temperature controls with a single-pole, double-throw (SPDT) output relay. The A421 Series controls are single stage, electronic temperature controls with a single-pole, double-throw (SPDT) output relay. 27. A Issued November 25, 2015 A421ABD-x, A421AED-x Refer to the QuickLIT website for the most up-to-date version of this document. Includes an A99BB- 200C temperature sensor with 6.6 ft (2.0 m) cable. Single-Stage Electronic Temperature Control from Johnson Controls The A421 Series single-stage temperature controls are available in low voltage (24VAC) and high voltage (120 or 240VAC) models. Johnson Controls A421GEF-02 - Single Stage Digital Temperature Control w/ 6 Ft. 7-1/5" Leads (24v, SPDT) - Low-Voltage Type 4X Electronic Temperature Control: Type 4X (NEMA), IP66 watertight enclosure for surface-mount applications. Figure 14: Adjusting temperature in the Restricted menu Troubleshooting A421 Series Controls display fault codes on the LCD as described in Table 4. #~�!=u?����p��9�����g�}!��>-0��*{ See Table 1 for information about a standard A421 Series Electronic Temperature Control. The A421 series controls are single-stage, electronic temperature controls with a Single-Pole, Double-Throw (SPDT) output relay. A421 Series electronic temperature controls are single-stage controls with a single-pole, double-throw (SPDT) output relay. Use with single-stage refrigeration or HVAC equipment. A421 Series. Use with single-stage refrigeration or HVAC equipment. We only ship within the United States. Points of Single Contact. A421 Standard Model doctype Installation Guide docpartnumber 24-7664-3019 docrev E revised_modified 2019-10-14. See Table 1 for information about a standard A421 Series Electronic Temperature Control. A421 Controls feature a backlit LCD with adjustable brightness and three-button touchpad interface that can be set up to restrict user adjustments. A421ABC-06C Line-Voltage Type 1 Electronic Temperature Control: Type 1 (NEMA), IP20 standard enclosure for DIN rail and surface-mount applications. They feature a lockable front-panel touchpad for setup and adjustment, and a Liquid Crystal Display (LCD) for viewing the temperature and status of other functions. Temperature is arguably the most important component in a building's environment. Advertisement. A421 Controls Feature A Bright Backlit Lcd With Adjustable Brightness And A Three-Button Touchpad Interface That Can Be Set Up To Restrict User Adjustments. The controls feature an adjustable backlit LCD for viewing the temperature and status of other functions, and a three-button touchpad for setup and adjustment. These limits are designed to … endstream endobj 922 0 obj <> endobj 923 0 obj <> endobj 924 0 obj <>stream A421 controls feature a backlit LCD with adjustable brightness and a three-button touchpad interface that can be set to restrict adjustments. We have 2 Penn A421 Series manuals available for free PDF download: Installation Manual, Installation Instructions Manual . Line-Voltage Type 4X Electronic Temperature Control: Type 4X (NEMA), IP67 weathertight enclosure for surface-mount applications. $81.14 Johnson Controls A421ABC-02C A421 Series Electronic Temperature Control, -40 to 212 Degree F Temperature Range, Single-Pole, Double-Throw. LIT-1900549 Description System 450™ is a family of modular, digital electronic controls that is easily assembled and set up to provide reliable temperature, pressure, and humidity control for a wide variety of HVAC/R applications, commercial process applications, and industrial process applications. Troubleshooting procedure - PENN Controls - A421GEF - Electronic Temperature Control - A421 Standard Model A421 Series Standard Electronic Temperature Controls Installation Guide brand PENN Controls prodname A421 Standard Model doctype Installation Guide docpartnumber 24-7664-3019 docrev E revised_modified 2019-10-14 28. Page 1 A421 Series Standard Electronic Temperature Controls Installation Instructions Part No. . The temperature control range is, The A421 controls are available either in Type 1, (NEMA), IP20 (CE), high-impact plastic enclosures, suitable for surface or DIN rail mounting (Figure 1), or in Type 4X (NEMA), IP66 (CE) watertight, corrosion. Figure 2: A421 Control with Type 4X (NEMA). Menu. Table 1. A421 Series Electronic Temperature Controls with Off-Cycle Defrost Product Bulletin Refer to the QuickLIT website for the most up-to-date version of this document. E ǭ3M�^[���j��;Y2$H���;J�-I�lO���x����xwt�8a$Q�$�_X&J�+M�0"d["-�c�b�XkF������11ΒX�ӊ�gMb/gH��,I�\L8� �%A�s5�p��F ��F.%X5 The new A421 Series Electronic Temperature Control by Johnson Controls has advanced control features for more application versatility. Our commercial thermostats provide unprecedented accuracy, efficiency and energy savings. It offers a wide range of options that allow for customized control functions. A99B Series Positive Temperature Coefficient Sensors. A421 Series Electronic Temperature Controls with Off-Cycle Defrost Installation Guide 3 • Do not mount the control on surfaces that are prone to vibration or in a location where high- voltage relays, motor starters, other sources of electromagnetic emissions, or strong radio 26. Direct Replacement To The A419Abc-1C The A421 Series Electronic Temperature Controls Are Single-Stage Controls With A Single-Pole, Double-Throw (Spdt) Output Relay. 1 Applications The A421 Series Electronic Temperature Controls are single-stage, electronic temperature controls with a single-pole, double-throw (SPDT) output relay. Troubleshooting procedure - PENN Controls - A421GEF - Electronic Temperature Control - A421 Standard Model A421 Series Standard Electronic Temperature Controls Installation Guide brand PENN Controls prodname A421 Standard Model doctype Installation Guide docpartnumber 24-7664-3019 docrev E revised_modified 2019-10-14 A421 Series Standard Electronic Temperature Controls (Continued) Single-Stage Electronic Temperature Controls A421 Series Standard Electronic Temperature Control (Part 2 of 2) Product Code Description A421AEC-02C Line-Voltage Type 4X Electronic Temperature Control: Type 4X (NEMA), IP66 watertight enclosure for surface-mount applications. A421 Electronic Temperature Control with Off-Cycle Defrost. 2 A421 Series Electronic Temperature Controls with Off-Cycle Defrost Installation Guide. Incorporate and maintain other devices, such, as supervisory or alarm systems or safety or limit, controls, intended to warn of or protect against failure, IMPORTANT: Utiliser ce A421 Series Electronic, Temperature Control uniquement en tant que, dispositif de régulation. 2 A421 Series Standard Electronic Temperature Controls Catalog Page for the most up-to-date version of this document. 24-7664-3019, Rev. An LED indicates the output relay's On/Off status. The comfort of its occupants depends on an indoor climate that adapts to their needs. Observe the electrical ratings listed in Technical Specifications on page 14. . Do not replace an A99 Series sensor with any other brand, series, or type of temperature sensor. Temperature Controls are specialists in temperature control and have Australia’s largest stock of Thermocouples, RTD Sensors, Thermowells, Temperature Controllers, Liquid Level Switches and Extension Cables in single, multi-pair and steel wire armour configuration. Johnson Controls A421AEC-01C - Single Stage Digital Temperature Control (120/240v SPDT) - The A421 Series controls are single stage, electronic temperature controls with a single-pole, double-throw (SPDT) output relay. 4.8 out of 5 stars 6. ( Antes A419ABC-1C ) en Quecalor.com DTC1 Series Standard Electronic Temperature Controls Installation Instructions 3 Additional Guidelines for Mounting Type 4X Controls The Type 4X models may be mounted to flat vertical surfaces using the four holes at the enclosure corners. Temperature Controller Johnson Controls TM-11x1 series Installation Instructions Manual. B Issued November 6, 2015 A421ABC-x, A421AEC-x, A421GBF-x, A421GEF-x Refer to the QuickLIT website for the most up-to-date version of this document. A421 controls feature a backlit LCD with adjustable brightness and a three-button touchpad interface that can be set to restrict adjustments. Apply. System 450™ Series Modular Controls Code No. Any A99 Series sensor works with the A421 Series Controls. Rated for 24 VAC Class 2, Safety Extra Low Voltage. 940 0 obj <>/Filter/FlateDecode/ID[<96FA498F9FC262DECD2D4F28A755D2B3>]/Index[921 82]/Info 920 0 R/Length 103/Prev 529162/Root 922 0 R/Size 1003/Type/XRef/W[1 3 1]>>stream Applications Dimensions IMPORTANT: Use this A421 Series Electronic Temperature Control only as an operating control. 58 1002 0 obj <>stream 26. 26. An LED. The A421 with Defrost Control is typically used to provide temperature control and adjustable, timed, passive defrost cycles on medium temperature cooling applications such as reach-in boxes, display cases, and walk-in coolers. ELECTRONIC. Page 21: Troubleshooting To return to the Main screen, press Down and Up simultaneously. Learn about the new PENN A421 Electronic Temperature Controls with Off-Cycle Defrost, including usage applications and how to program the controls. A421 Series Standard Electronic Temperature Controls Installation Guide brand PENN Controls prodname A421 Standard Model doctype Installation Guide docpartnumber 24-7664-3019 docrev E revised_modified 2019-10-14. h�bbd```b``�"���W ��?X�D2U�����0� &7�� R��2 Dr��H�P�,�lY $���灦120k�ā� U���q����� �� Johnson Controls A421ABC-02C - Single Stage Digital Temperature Control (120/240VAC SPDT) - Electronic Single Stage Temperature Control, 120/240 VAC, UL TYPE 1, IP20, SPDT, 2M (6'-6") Temperature Sensor Free shipping on orders over $99 Your Zip: × Zip Code. 2 A421 Series Standard Electronic Temperature Controls Installation Guide An LED indicates the output relay's On/Off status. indicates the output relay's On/Off status. The equipment is not installed in accordance with federal, state and local codes and regulations, 3. We offer a wide range, with options to suit any HVAC need. Contact your nearest Johnson Controls or PENN distributor or sales representative to order these products. Walk-In Cooler Temperature Controls; Modular Electronic Controllers Applications Dimensions IMPORTANT: Use this A421 Series Electronic Temperature Control only as an operating control. A scrolling display provides walk-through instructions for each step of the setup process, using plain language. h��V_o�6�G�c��?) Johnson Controls A421ABC-04C Penn Series A421 Line-Voltage Type 1 Electronic Temperature Control, IP20 Standard Enclosure, 120/240 VAC, Includes an A99BB-400C Temperature Sensor with 13' 1-1/5" Cable . North American Emissions Compliance. The A421 Series Electronic Temperature Controls are single-stage controls with a single-pole, double-throw (SPDT) output relay. %PDF-1.5 %���� 905 Waverly Avenue, Holtsville, NY, 11742. Standard electronic temperature control (Some upright frost free models) 24 Deluxe electronic temperature control (Some upright frost free models) 24 Freezer optional features 24 Power on light 24 Electromechanical temperature alarm (Audible only or audible with warning light) 24 Electronic temperature alarm (Some electronic chest models) 25 A421 Series Electronic Temperature Controls Technical Specifications; Specification Description; Power consumption: 1.8 VA maximum : Supply power: Low-Voltage models: 24 VAC (20 to 30 VAC), 50/60 Hz, Class 2 or Safety extra-low voltage . 2 A419 Electronic Temperature Control with NEMA 1 and NEMA 4X Watertight Enclosures Installation Instructions This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of FCC rules. A421 Series Standard Electronic Temperature Controls with and without Power Cords Product Bulletin 2 Applications The A421 Electronic Temperature Control can be used to control a wide variety of single-stage refrigeration or HVAC equipment. A419 Series temperature controller pdf manual download. A421 Series Electronic Temperature Controls with Off-Cycle Defrost Installation Instructions. 28. 888 … Page 1 A421 Series Standard Electronic Temperature Controls Installation Instructions Part No. The A421 Series Electronic Temperature Controls are single-stage controls with a single-pole, double-throw (SPDT) … A421 controls have simple On and Off temperature, settings for heating or cooling, an adjustable anti-short, cycle delay, temperature setback, and sensor offset, capability. Page 1 A419 Issue Date February 10, 2003 ® A419 Series Electronic Temperature Controls with Display and NEMA 1 or NEMA … dysfonctionnement du A421 Control. 921 0 obj <> endobj Applications Dimensions IMPORTANT: Use this A421 Series Electronic Temperature Control only as an operating control. A421 Series Standard Electronic Temperature Controls Installation Instructions Refer to the QuickLIT website for the most up-to-date version of this document. Table 1. STREAMLINE CONTROLS PVT.LTD. See Table 2 and Table 3 to order A99 sensors, mounting hardware, and other accessories you use to install A421 Controls. View and Download Johnson Controls A419 Series installation instructions manual online. A421 Controls feature a bright backlit LCD with adjustable brightness and a three-button touchpad interface that can be set up to restrict user adjustments. A421 Series electronic temperature controls are single-stage controls with a single-pole, double-throw (SPDT) output relay. Control Electronico De Temperatura PENN A421ABC-02C , 1 Salida SPDT, 120 O 240 Volts , Incluye Sensor. A421 Series Standard Electronic Temperature Controls with Power Cords Installation Instructions 4 Wiring The A421 Electronic Temperature Controls with Integral Power Cords are prewired for 120 VAC plug-in applications only. A421 Series Standard Electronic Temperature Controls with Power Cords Installation Guide brand PENN Controls prodname A421 Standard Model doctype Installation Guide docpartnumber 24-7664-3027 docrev D revised_modified 2019-01-24. The … �J�-L�LL��63E3% �b�ť�����Wv6�΅@�g��3�f`4�d020��Ҿ�m�4��r Procedure. Troubleshooting procedure - PENN Controls - A421AEJ - Electronic Temperature Control - A421 Standard Model A421 Series Standard Electronic Temperature Controls with Power Cords Installation Guide brand PENN Controls prodname A421 Standard Model doctype Installation Guide docpartnumber 24-7664-3027 docrev D revised_modified 2019-01-24 Ensure equipment operates safely and cost-effectively with controls that maintain proper operating temperature and help prevent over-cooling or overheating. The controls feature an adjustable backlit LCD for viewing the temperature and status of other functions, and a three-button touchpad for setup and adjustment. Figure 1: A421 Control with Type 1 (NEMA). ������e,�O�5뀓llÚcM��I��`y��>X�����,��cl���eWw����^�5�X�۹�6D�e}�q�C�/8����:$�=�N^�W�O^�N^��W���N^��W��v�ʄ��sC��a���d�.2\Ԝ�N�r�ྛ7�{�����z�R��� ����A�Ŧ=��#t:U��7wU��dnF�ޏ�4{tt�MWٰ��s��ӷ��@�x�e��x Includes an A99BB-600C temperature sensor with 19.5 ft (6.0 m) cable. &�d��xQ6�'� - �"`�0 { Johnson Controls A421 Electronic Temperature Controller. Commercial refrigeration applications range from display cases and food service equipment to food storage rooms and processing equipment. Johnson a421 digital temperature controller manual >> DOWNLOAD Johnson a421 digital temperature controller manual >> READ ONLINE Johnson Controls A421GEF-02C Penn Series A421 Low-Voltage Type 4X Electronic Temperature Control, IP67 Weathertight Enclosure, 24 VAC, Includes an A99BB-200C Temperature Sensor with 6′ 7-1/5″ Cable $127.58 $ 127 . The controls feature an adjustable backlit LCD for viewing the temperature and status of other functions, and a three-button touchpad for setup and adjustment. (2) Now Pg11:Temperature(1/2) is displayed on screen in first line. A421tSeries Standard Electronic Temperature Controls Installation Guide Applications Important: Use this A421 Series Electronic Temperature Control only as an operating control. The easy-to-use push-button programming menu is highlighted, including the basic and advanced menus making it simple to use. An LED indicates the On/Off status of the output relay. Where failure or malfunction of the A421 control could, lead to personal injury or property damage to the, controlled equipment or other property, additional, precautions must be designed into the control, system. Johnson Controls - The A421 Series Electronic Temperature Controls are single-stage, electronic temperature controls with a single-pole, double-throw (SPDT) output relay. Manage cooling, defrost, alarms, communications and costs with the A421 refrigeration controller. . Rated for 120/240 VAC. �$B� �!�p�B!��E4[ �� ��r"L�� "N�a���{GG����cXM7.�������%��}V�y�������8����~�t��U��a���G�.�X���ʼ��.���C�=�fzUVˬ�1P���>[��d6���D�����~��)R��(�����=��k��y�ZH1�H�!f,��x�^)�^��D+Q���n�_�{�� The equipment is not installed by a qualified installer per the MANUFACTURER’S installation instructions shipped with the product, 2. Manufacturer of Pressure Switches, Valves, Temperature switches, Pressure Transducers, Electronic Pressure and Temperature Switches and Level Control Products Packed with an A99 series PTC temperature sensor with an ambient operating temperature range of -40 to 212⁰F*, they provide a Single Pole/Double Throw relay output. 24-7664-3035, Rev. %%EOF ETC Commercial Temperature Controls Specifications Ranco ETC Single Stage Installation Instructions The Ranco ETC is a microprocessor based temperature controller suitable for switching 120Volts at up to 16Amps for heating or cooling applications making it suitable for a wide range of applications. A421 Series Electronic Temperature Controls. PENN controls also preserve dairy and agricultural products, as well as the pharmaceutical cold chain. Each A421 Control includes a Johnson Controls® or PENN® A99 Series temperature sensor. Penn A421 Series Installation Manual (29 pages) Temperature Controls with ... A421 Series Electronic Temperature Controls. A Light-Emitting Diode (LED) indicates the controls output relay On/Off status. UL Conformity Declaration Information . A421 Temperature Control Output Relay Contacts Electrical Ratings. e�*l�Y������Wi�-��O?V�������(���5��tG��y�qC8���䆰���{�c@�]��. 0 Temperature Controls. Veiller, dans ce cas à intégrer de façon permanente, d'autres dispositifs, tels que des systèmes de, supervision ou d'alarme, ou des dispositifs de, sécurité ou de limitation, ayant une fonction, d'avertissement ou de protection en cas de, The A421 Series Electronic Temperature Controls are, single-stage, electronic temperature controls with a. single-pole, double-throw (SPDT) output relay. B Issued November 6, 2015 A421ABC-x, A421AEC-x, A421GBF-x, A421GEF-x Refer to the QuickLIT website for the most up-to-date version of this document. INJkon 01/4.0/ Manual Page 13 of 93 (I) SETTING PROCEDURES Pg11:Temperature(1/2) TEMPERATURE (1) Press TEMP. For product availability in your area, please verify your zip code. The Johnson Controls A421 Series are single-stage controls with a single-pole, double-throw (SPDT) output relay. A421 Series Electronic Temperature Controls with power cords Technical Specifications; Specification Description; Power consumption: 1.8 VA … Standard Operating Procedure (SOP): A set of instructions having the force of a directive, covering those features of operations that lend themselves to a definite or standardized procedure without loss of effectiveness. A built-in time clock is standard. Page 3 The A421 Controls require an A99 sensor, and each A421 Control includes an A99 sensor. Temperature Control only as an operating control. A421 Temperature Control Output Relay Contacts Electrical Ratings. Temperature controls with off-cycle defrost (29 pages), A421 series a421abc series a421aec series A421 controls feature a backlit LCD with adjustable, brightness and three-button touchpad interface that, can be set up to restrict user adjustments. A421 Series Electronic Temperature Controls with Off-Cycle Defrost Installation Instructions Refer to the QuickLIT website for the most up-to-date version of this document. See Table 2 for application information by control type. 631.207.1200 (3) Select required parameter position using CURSOR keys. See A99 Series Temperature Sensors, Wiring, and Technical specifications for more information about A99 sensors. Use an AC voltmeter to check the voltage … To remove the cover, loosen the two captive cover screws. . Defrost Installation Guide applications IMPORTANT: Use this A421 Series Standard Electronic Temperature Controls with Off-Cycle,. 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Most up-to-date version of this document zip code Part No A99 sensor for..., 3 adjustable, brightness and a three-button touchpad interface that can be set up to restrict user.. Basic and advanced menus making it simple to Use shipped with the a421 series standard electronic temperature controls installation instructions,.... Defrost, alarms, communications and costs with the A421 Series Electronic Temperature Controls with Defrost. Fault codes on the LCD as described in Table 4 loosen the two captive cover screws page 1 A421 Electronic. With federal, state and local codes and regulations, 3 double-throw ( SPDT output! Controls output relay advanced Control features for more application versatility Type 1 ( NEMA ), IP67 weathertight enclosure surface-mount. Do not replace an A99 Series Temperature sensors, Wiring, and Technical literature are available our. 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Options that allow for customized Control functions programming menu is highlighted, including the and.