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Single Stage Digital Temperature Control (120/240v SPDT)
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MANUALS (1)
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Product Highlights
Description
Features
- Easy to Read Front Panel LCD:Displays the sensed temperature and control function status clearly, custom icons on the display indicate the control and system status at a glance
- Wide Temperature Differential Adjustment Range (1 to 30F or C): allows the user to set a precise (1F or 1C) Temp differential from 1 to 30 (F or C) providing a much tighter differential than electromechanical controls
- Adjustable anti-short cycle delay (0 to 12 minutes in 1 minute increments): Ensures that the output relay remains off for a user set time delay, which helps avoid hard starts, nuisance overload outages, and unnecessary equipment wear
- Switch Activated Temperature Offset Function: Allows the user to shift the cut in and cutout setpoints by and adjustable offset based on the status of a user installed, external switch, such as a time clock.
- High impact, Thermoplastic NEMA 1 or NEMA 4X Watertight, Corrosion-resistant enclosures: Increase application options, allowing surface and snap fit DIN rail mount, or Watertight surface mount
- Lockable Front Panel Touchpad: Allows easy set up and adjustment of the A419 control setpoint, differential, and other functions, a concealed jumper locks the touchpad, and deters unauthorized adjustment of the control settings
- Low and Line Voltage Models: Provide options for most refrigeration and HVAC control voltage applications
Specs
| Product Type: | Temperature Control |
|---|---|
| Voltage: | 120v |
| Enclosure Type: | NEMA-1 |
| Max Temp (F): | 212°F |
| Min Temp (F): | -30°F |
| Options: | Comes with Sensor |
| Lead Wire Length: | 6-1/2 Feet |
| Application: | Temperature Control |
Questions?
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Product Reviews
Most Liked Positive Review
Solid Product, Great Value
Most Liked Negative Review
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Manufacture testing need upgrading
Great part!!
Excellent product
Fast Shipment!
Simple reliable Temerature Conrol
Johnson Controls A419 Temperature Control
This is the temperature controller
very good product
Johnson control
Excellent value and easy to use.
I would buy this product again
Product Q&A
14 QuestionsQ: what is the measured height and width of the temperature control enclosure? I want to mount it on a True display case refrigerator and would like to know beforehand if it will fit into the in-set where the current electromechanical thermostat is after I remove it.
Asked by Reid 11 years ago
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Verified Reply- SupplyHouse StaffPage 2 of the user guide shows the height and width of the control enclosure. It is 2-3/8" wide by 5" in height.
Q: It appears to wireable for both 120V and 240V. If wired for 240V will it work in a 220V environment?
Asked by chris 11 years ago
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Yes it will work with 220VAC. BTW, you have made a GREAT choice in Temp Controllers!
Q: Im looking for an adjustable temperature controller the will open and close a damper or turn on and off an exhaust fan.
Asked by Edward 11 years ago
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Verified Reply- Supplyhouse StaffThere is not enough information provided to be able to confirm what product would work, as we would need to know the voltages and the control sequence of the system in order to assist further.
Q: I need to control an oven that can get to 600 degrees F. Do you have a sensor that can go that high?
Asked by JaneH 11 years ago
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the setpoint maximum is 212F or 100C, the sensor type can be replaced but this is the controller limit.
Q: is there a temperature over ride to check the equipment it is being used to control or will it only operate at programmed temp
Asked by james 12 years ago
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There is no temperature override on the A419. You will just have to alter the setpoint. It's pretty easy to do.
Q: How many temperature sensors can be connected to this unit? Can two sensors be connected for temperature differential control?
Asked by Brogan 12 years ago
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do not think so, here is link to install http://cgproducts.johnsoncontrols.com/MET_PDF/125188.PDF
I believe you can only use 1 sensor however there is an input that you can connect to introduce a programmable offset in temperature. The controller has a programmable "set point" temp, Differential temp range setting, and a heat/cool mode
No you can't hook up two probes. And if you want to switch from a heating cycle to a cooling cycle i believe you need to move some jumpers on the circuit board.
Q: Was hoping to learn if the remote sensor is water compatible and up to what temperature can it handle? The application I'm looking to use it for is to control a hot water bath that I'd like to maintain at 40C or 104F. Can the sensor go directly into the water at this temperature? Thanks
Asked by Matt 12 years ago
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I don't believe it can be directly immersed. The sensor is a stainless steel probe approximately 2" (50mm) long that is crimped onto the carrier cable leaving some gaps that would allow liquid to enter. There may be other sensors in the Johnson Controls A99 ( www.johnsoncontrols.com<http://www.johnsoncontrols.com> )line that are directly waterproof, or there is an option for an immersed well for mounting the sensor in liquid applications (P/N WEL11A-601C). Ken
the probe itself can work up to 212 F and is ~2" long before attachment to the cable. it appears sealed by crimp and possibly silicone? i have briefly submerged the cable in water but not sure about doing this long term. if 2" is too short you can attach another style A99 sensor based on this quote in the manual: "Each A419 control includes a Johnson Controls/PENN A99 temperature sensor. The sensor may be removed and replaced with any compatible Johnson ControlsR A99 temperature sensor, or the wire leads on the sensor may be extended." these sensors are listed in this document: http://www.johnsoncontrols.com/content/dam/WWW/jci/be/eu_library/catalogues/ netherlands/Opnemers.pdf
I used it to keep a chemical bath at 165F, so 104F water will be fine.
The A419 is rated for up to 212 deg F but the probe is not designed for direct liquid contact. You would need to use a thermowell of some sort that would work for your application.
A liquid application will require a dry well. I use mine in glycol solution freezer. Made a dry well with a piece of copper pipe. Works great. I'm sure the temp stats are in the item descrip.
Q: Will this unit control a 5500W water heating element
Asked by dan 12 years ago
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I am going to say “YES”....as the controller is supposed to function with 120v or 240v units. I would question Johnson Controls if you have any particular reservations. Hope that helps! 5500w should make for a pretty quick HLT. Cheers!
I don't think so. I don't have the specifications handy so... I switched my small solar pumps on and off with these units but even then used a relay rated for them to do it. Buy a relay big enough to handle the high load and I would say yes.
I don't believe it is intended for that type of load. Mine actuates relay that handles the direct load (5hp freezer compressor). A similar scheme should work for you. Jimi Agee
you will need an additional contactor that will handle the amp load that is controlled by the temp controller
Q: The sensor will need to measure the temp of water in a PVC pipe, outside dia. 2". The sensor wells shown seem to be too long. How do I mount the sensor?
Asked by Jack 13 years ago
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Simply cut a tee into the pipe and add a nipple long enough to house the probe. The turbulence around the probe will provide an accurate temperature indication.
I don't have the exact measurement handy, but he sensor on the Johnson controller is only about 1-1.25" long. In my case, I have it in a much smaller pipe (1/2" NPT Stainless). What I did is found a thermowell that was 1.5" deep and had 1/2" NPT threads. I insatlled a tee in the line I wanted to monitor and screwed the themowell into the tee perpendicular to the flow of the liquid. Hope this helps.
Don't know if the helps, but the senro that came with my controller is only about 2 inches long. I have well that would surely fit into 2" PVC. Would you be able to place a tee and cap in the PVC and place the tempurature probe in the cap?? That's what I see as an option. Hope it helps.
Q: Does Johnson make this exact box that comes with two boxes into one? Meaning all the same specs as the A419 but two of them side to side or top to bottom all in one housing? Also with two seperate thermo sensors independently.
Asked by 15 years ago
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Verified Reply- PexSupply StaffWe do not believe the manufacturer produces such a product.