1 Installation instructions Issue Date March 2016. a419 Series Electronic Temperature Controls with NEMA 1 or NEMA 4X Watertight Enclosures Application The a419 Electronic Temperature control is a IMPORTANT: Use this a419 Series Electronic single-stage, Electronic Temperature control with a Temperature control only to control equipment Single-Pole, Double-Throw (SPDT) output relay. The under normal operating conditions. Where failure or control features a lockable, three-button touchpad for malfunction of the a419 control could lead to setup and adjustment and an LCD which displays the personal injury or property damage to the controlled sensed Temperature and other control functions. A. equipment or other property, additional precautions front panel LED indicates the output relay status. The must be designed into the control system. control has a setpoint range of -30 to 212 F. Incorporate and maintain other devices, such as (-34 to 100 C) and is available in 24 VAC or supervisory or alarm systems or safety or limit 120/240 VAC models.
2 See the Technical Controls , intended to warn of or protect against Specifications section. failure or malfunction of the a419 control system. The a419 control has heating and cooling modes with IMPORTANT: Utiliser ce a419 Series adjustable setpoint and differential, an adjustable Electronic Temperature control uniquement pour anti-short cycle delay, and a Temperature offset commander des quipements dans des conditions (setback) function. The control provides remote normales de fonctionnement. Lorsqu'une d faillance sensing capability, and Electronic accuracy in a ou un dysfonctionnement du a419 control risque de Type NEMA 1 high-impact plastic enclosure suitable provoquer des blessures ou d'endommager for surface or DIN rail mounting or a surface mount l' quipement contr l ou un autre quipement, la Type NEMA 4X watertight and corrosion resistant conception du syst me de contr le doit int grer des enclosure. The Temperature sensor supplied with the dispositifs de protection suppl mentaires.
3 Veiller control is interchangable with compatible dans ce cas int grer de fa on permanente d'autres Johnson Controls /PENN A99 Temperature sensors. dispositifs, tels que des syst mes de supervision ou d'alarme, ou des dispositifs de s curit ou de Canadian Compliance Statement limitation, ayant une fonction d'avertissement ou de This digital apparatus does not exceed the Class A. protection en cas de d faillance ou de limits for radio noise emissions from digital apparatus dysfonctionnement du a419 control . set out in the Radio Interference Regulations of the Canadian Department of Communications. FCC Compliance This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference that may cause undesired operation. 2016 Johnson Controls , Inc. 1. Part No. 24-7664-1539, Rev. F. 2-1/4 1-1/16. This equipment has been tested and found to comply 56 27.
4 with the limits for a Class A digital device pursuant to 1-3/4. Part 15 of FCC rules. These limits are designed to 44. provide reasonable protection against harmful a419 . interference when this equipment is operated in a 6-5/8. 168. commercial environment. This equipment generates, M ENU. uses, and can radiate radio frequency energy and, if 6-1/8. 155. not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful 2-13/16. interference, in which case the user will be required to 71 Position the A99 sensor correct the interference at his or her own expense. in bracket at bottom of a419 NEMA 4X enclosure. 2-13/16. Installation 71. Refer to the following guidelines, procedures and illustrations when installing an a419 control . Figure 2: Dimensions for a419 Temperature Parts Included Controls with NEMA 4X Enclosures, (mm).
5 Each a419 control includes a Johnson Controls /PENN. A99 Temperature sensor. The sensor may be removed Mounting and replaced with any compatible Johnson Controls An a419 control has either a standard high-impact A99 Temperature sensor, or the wire leads on the plastic NEMA 1 or a NEMA 4X watertight enclosure. sensor may be extended. See the Mounting and The a419 control is not position sensitive but should Wiring sections for additional guidelines and be mounted for convenient wiring and adjustment. The restrictions when mounting and wiring the control . NEMA 4X models may be mounted to flat vertical Dimensions surfaces using the four screw holes at the enclosure 9/64 2-3/8. corners. See Figure 2. ( ) (61). Note: When mounting the control to rigid conduit, attach the hub to the conduit before securing the hub 1/2 to the control enclosure. For a NEMA 4X model, use a (13) 5 watertight fitting rated for the ambient environment. DIN MENU. (127).
6 2-15/16 Rail (75) On NEMA 4X models select the knockout to be 4 removed. Place a screwdriver blade on the knockout (102). near the edge. Apply a sharp blow to the screwdriver handle to loosen the knockout. Be careful not to 2-3/8. damage the control 's interior components. 1-9/16 7/16. (61). (40) (11) An additional low-voltage, two-wire cable is required to Sensor operate the a419 control 's Temperature offset function. 2-3/8 On NEMA 4X enclosures you must install a suitable 2 (61). 1/4 (50) 7/8. water-tight fitting in an available knockout to pass the (6) (22) two-wire cable through the enclosure wall. 7/8 (1/2 in. Trade Size). (22) Conduit Hole IMPORTANT: The short-lead A99 sensor, included with a419 NEMA 4X Controls , must be Figure 1: Dimensions for a419 Temperature mounted on the bottom of the control in the bracket Controls with NEMA 1 Enclosures, (mm) on the NEMA 4X housing. Mounting the sensor on top of the control may reduce the accuracy of the displayed Temperature .
7 See Figure 2. 2 a419 Electronic Temperature control with NEMA 1 and NEMA 4X Watertight Enclosures Installation instructions Wiring Use wire no larger than 16 AWG when connecting to the upper sensor terminal block (TB3). ! WARNING: Risk of Electrical Shock. Wire insulation rating must be 90 C, minimum. Disconnect or isolate all power supplies before A99 Temperature sensors are not polarity making electrical connections. More than one sensitive. Wire the leads to (+) SEN and (-) COM. disconnection or isolation may be required to on the sensor terminal block (TB3). See Figure 3. completely de-energize equipment. Contact with Keep the leads between the control and sensor as components carrying hazardous voltage can cause short as possible/practical in your application. The electric shock and may result in severe personal additional resistance in long sensor leads creates injury or death. error between the actual Temperature and the AVERTISSMENT: Risque de d charge lectrique.
8 Displayed Temperature . Refer to Table 1 when D brancher ou isoler toute alimentation avant de extending sensor leads. r aliser un branchement lectrique. Plusieurs Temperature sensor signals may be affected by isolations et d branchements sont peut- tre electrical interference. When extending sensor n cessaires pour -couper enti rement l'alimentation cable beyond 50 ft ( m) use a twisted-pair, de l' quipement. Tout contact avec des composants shielded cable to reduce electrical interference. conducteurs de tensions dangereuses risque d'entra ner une d charge lectrique et de provoquer Table 1: Maximum Recommended Sensor Cable des blessures graves, voire mortelles. Lengths and Wire Sizes Wire Maximum Sensor Cable Length*. Gauge feet (meters). IMPORTANT: All wiring must conform to local, 16 AWG 500 (150). national, and regional regulations. Use copper 18 AWG 300 (100). conductors only for all wire connections. Do not 20 AWG 200 (60). exceed the electrical ratings for the a419 control or 22 AWG 125 (40).
9 The equipment it is wired to. * At the listed maximum cable lengths there is less than Observe the following guidelines and see Figure 3 and 1F ( ) error in the actual Temperature vs. Table 1 when wiring the a419 control to your displayed Temperature . equipment. Use wire no larger than 12 AWG when connecting to the two lower terminal blocks (TB1 and TB2). (Optional) 24 VAC Application (Optional) 120 VAC Application (Optional) 240 VAC Application Binary Binary Binary Input a419 GBF-1 Input a419 ABC-1 Input a419 ABC-1. Switch a419 GEF-1 Switch a419 AEC-1 Switch a419 AEC-1. (+) BIN (+) BIN (+) BIN. ( ) COM ( ) COM ( ) COM. (+) SEN (+) SEN (+) SEN. TB3 TB3 TB3. Cable Cable Cable Shield Shield Shield (if used) (if used) (if used). A99 TB1 A99 TB1 A99 TB1. Sensor TB2 TB2 TB2. Sensor Sensor AC COM. AC COM. NO. NO. NC. C. NC. C. NO. T1. T2. 240. 120. 120. NC. C. 240. 24 VAC 120 VAC 240 L1. Class 2 24 VAC 120 VAC VAC L2 240 VAC. Neutral Transformer Load Load Load Figure 3: Typical Wiring for the a419 Series Temperature Controls : 24, 120, and 240 VAC Applications a419 Electronic Temperature control with NEMA 1 and NEMA 4X Watertight Enclosures Installation instructions 3.
10 Setup and Adjustments To position a jumper in the Installed position, place ! WARNING: Risk of Electrical Shock. the jumper on both pins, which closes the circuit between the pins. To position a jumper in the Disconnect all electric power sources from the a419 Removed position, place the jumper on one pin only. control before opening the cover. Contact with See Figure 4. internal components carrying hazardous voltage can cause electric shock and may result in severe personal injury or death. =. Jumper Installed (Jumper Positioned on Both Pins). AVERTISSMENT: Risque de d charge lectrique. D connecter toutes les sources d'alimentation lectrique de l' a419 control avant de ouvrir le coffret de l' a419 control . Tout contact avec des composants Pins =. internes conducteurs de tensions dangereuses Removed risque d'entra ner une d charge lectrique et de (Jumper Positioned on One Pin). provoquer des blessures graves, voire mortelles. Figure 4: Positioning the Jumpers IMPORTANT: To ensure that the output relay operates as intended, verify that all three of the jumpers are positioned properly for the application Touchpad Touchpad Heating Mode before powering the a419 control .