Johnson-controls A419 Series Manual de usuario descargar pdf (Pagina 1)

Product/Technical Bulletin A419

Issue Date August 13, 2014

Code No. LIT-125188 www.johnsoncontrols.com

A419 Series Electronic Temperature Controls with Display

and NEMA 1 or NEMA 4X Watertight Enclosures

The A419 series controls are single-stage, electronic

temperature controls with a Single-Pole, Double-Throw

(SPDT) output relay. They feature a lockable

front-panel touchpad for setup and adjustment, and an

LCD for viewing the temperature and status of other

functions. An LED indicates the controls’ output relay

On/Off status. The A419 controls are available in 24

VAC or 120/240 VAC powered models.

The A419 controls have heating and cooling modes,

adjustable setpoint and differential, an adjustable

anti-short cycle delay, and a temperature offset

function. The setpoint range is -30 to 212°F

(-34 to 100°C). The controls feature remote sensing

capability and interchangeable sensors. The

A419 controls are available in either NEMA 1,

high-impact plastic enclosure suitable for surface or

DIN rail mounting or NEMA 4X watertight,

corrosion-resistant surface-mount enclosures.

Figure 1: A419 Temperature Control with NEMA 1

Enclosure and A99 Temperature Sensor

Features and Benefits

 Easy-to-Read Front-Panel

Liquid Crystal Display

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 C°) temperature

differential from 1 to 30F° 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 an 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

1 2 3 4 5 6 ... 11 12

Indice de contenidos

Pagina 1 - Function

Pagina 2 - Dimensions

10 A419 Series Electronic Temperature Controls with Display and NEMA 1 or NEMA 4X Watertight Enclosures Product/Technical Bulletin 2. Check for

Pagina 3 - Operation Overview

A419 Series Electronic Temperature Controls with Display and NEMA 1 or NEMA 4X Watertight Enclosures Product/Technical Bulletin 11 Fault Codes

Pagina 4

12 A419 Series Electronic Temperature Controls with Display and NEMA 1 or NEMA 4X Watertight Enclosures Product/Technical Bulletin Technical Specific

Pagina 5 - Mounting

2 A419 Series Electronic Temperature Controls with Display and NEMA 1 or NEMA 4X Watertight Enclosures Product/Technical Bulletin Application IM

Pagina 6

A419 Series Electronic Temperature Controls with Display and NEMA 1 or NEMA 4X Watertight Enclosures Product/Technical Bulletin 3 Figure 4: A

Pagina 7 - Adjustments

4 A419 Series Electronic Temperature Controls with Display and NEMA 1 or NEMA 4X Watertight Enclosures Product/Technical Bulletin For example, i

Pagina 8 - SF:Sensor Failure

A419 Series Electronic Temperature Controls with Display and NEMA 1 or NEMA 4X Watertight Enclosures Product/Technical Bulletin 5 In Cooling/C

Pagina 9 - Troubleshooting

6 A419 Series Electronic Temperature Controls with Display and NEMA 1 or NEMA 4X Watertight Enclosures Product/Technical Bulletin Wiring ! WARNI

Pagina 10 - Temperature (°C)

A419 Series Electronic Temperature Controls with Display and NEMA 1 or NEMA 4X Watertight Enclosures Product/Technical Bulletin 7 Adjustments

Pagina 11 - Ordering Information

8 A419 Series Electronic Temperature Controls with Display and NEMA 1 or NEMA 4X Watertight Enclosures Product/Technical Bulletin Changing Tempe

Pagina 12 - Technical Specifications

A419 Series Electronic Temperature Controls with Display and NEMA 1 or NEMA 4X Watertight Enclosures Product/Technical Bulletin 9 Setting Othe

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