| Вид документа | Бюлетень виробу |
|---|---|
| Виробник | JCI |
| Код документа | a319-electronic-temperature-control |
| Група обладнання | A319 Electronic Temperature Control |
| Сторінок | 10 |
| Мова документа | англійська |
| Розмір файлу | 0.2 МБ |
Текст документа
FANs 216, 125, 195
Product/Technical Bulletin A319
Issue Date 0414
A319 Electronic Temperature Control
The A319 Series is a line voltage, single-stage
electronic temperature control with Single-Pole,
Double-Throw (SPDT) relay output and LED indication.
The A319 features heating or cooling modes of
operation, adjustable cut-in, adjustable differential, and
an interchangeable temperature sensor. The A319
couples electronic accuracy with remote sensing
capability in a NEMA 1 high-impact plastic enclosure
suitable for surface or DIN rail mounting.
Figure 1: A319 Electronic Temperature Control
Features and Benefits
Operates on 120 or 208/240 volts Eliminates need for 24 VAC power, saving installation time and cost
Electronic Circuitry Improved accuracy and higher reliability than equivalent
electromechanical controls
Solid-state Sensor Handles remote sensing applications up to 800 feet without the need
for ambient compensation or other limitations of electromechanical
temperature controls; eliminates potential capillary breakage problems
Interchangeable Temperature Allows flexibility in application; increases versatility and serviceability
Sensors and Mounting Accessories
Three Models Cover Temperature Reduces inventory by encompassing the temperature ranges required
Ranges from -25 to 220°F to support the majority of refrigeration and HVAC applications
(-32 to 105°C)
Model Designed Specifically for Provides easy and accurate adjustments to satisfy refrigeration
Refrigeration Applications applications (model number A319ABC-07-01)
Wide Adjustable Differential of Enables the user to match equipment cycle rate for a given
1 to 30°F (0.6 to 17°C) application; maintains a tighter differential than typical
electromechanical controls
Field-selectable Mode Jumpers Works to control either heating or cooling equipment with LED
indication of relay energization status
© 2014 Johnson Controls, Inc. 1
Part No. 24-7664-257, Rev. H
Code No. LIT-216010
A pplication Overview The A319 Temperature Control operates on 120 or
208/240 VAC; 50/60 Hz and supplies a SPDT relay
The A319 can be used to control a wide variety of
output. A front panel LED indicates “ON” when the
single-stage refrigeration or HVAC equipment.
relay is energized (which closes the N.O. contacts).
Typical applications include:
Adjustable features include:
frozen/refrigerated food cases
cut-in
compressor lockout (disables compressor when
differential
temperature exceeds limits)
heating/cooling mode
beverage/milk coolers
condenser fan cycling Definitions
boiler control Cut-in: The point at which the N.O. (Normally
pump control (cooling towers) Open) contact closes. Equal to the dial
setting of the A319.
space and return air temperature control
Cut-out: The point at which the N.O. contact
immersion sensing for actuation of hot water and opens.
steam valves in heating applications (well
required)
Cut-in Adjustment
Refer to Figures 5 and 6 for typical wiring diagrams.
With the jumper block in either the heating or cooling
position, the relay is energized and the N.O. contacts
will close when the sensed temperature reaches the
O peration cut-in temperature.
IMPORTANT: Use this A319 Electronic Back Side of Cut-in
Temperature Control only as an operating control. Adjustment Knob
Where failure or malfunction of the temperature
control could lead to personal injury or property
damage to the controlled equipment or other Differential
property, additional precautions must be designed Potentiometer
into the control system. Incorporate and maintain
other devices, such as supervisory or alarm Jumper Block
systems or safety or limit controls, intended to warn Position
of or protect against failure or malfunction of the Heating
temperature control. Cooling
240 NC Relay Energized
COM C
IMPORTANT : Utiliser ce A319 Electronic 120 NO LED Indicator
Temperature Control uniquement en tant que
dispositif de contrôle de fonctionnement.
Lorsqu'une défaillance ou un dysfonctionnement
du temperature control risque de provoquer des
blessures ou d'endommager l'équipement contrôlé
ou un autre équipement, la conception du système Figure 2: A319 Electronic Temperature Control
de contrôle doit intégrer des dispositifs de Board Layout and Terminal Locations
protection supplémentaires. 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 défaillance ou de
dysfonctionnement du temperature control.
2 A319 Electronic Temperature Control Product/Technical Bulletin
Heating Mode
Differential Adjustment Jumper Block
(+) Position:
Differential is defined as the change in sensor Cut-out
D Heating
temperature between relay energize (cut-in) and I
Temperature
F
relay de-energize (cut-out). The differential can be F
adjusted between 1 and 30°F (0.6 to 17°C) for the Cut-in
A319ABC-12 and -24 models, and between (Dial Setting)
1 and 15°F (0.5 to 8°C) for the A319ABC-07 model.
Adjust the potentiometer (marked DIFF.) to set the
differential. Refer to Figure 2 for potentiometer (-)
location.
Heating/Cooling Mode (+) Cooling Mode Jumper Block
When the heating mode is selected, the differential Position:
is above the cut-in temperature. The relay will
Temperature
Cooling
energize and the LED indicator will illuminate when
the temperature drops to the cut-in temperature. Cut-in
D (Dial Setting)
When the temperature rises to the cut-in plus the I
differential setting, the relay and LED indicator will F
F
de-energize (refer to Figure 3). Cut-out
(-)
When the cooling mode is selected, the differential
is below the cut-in temperature. The relay will
energize and the LED indicator will illuminate when Figure 3: A319 Cut-in Control with Differential
the temperature rises to the cut-in. When the (Heating and cooling are both shown; action
temperature drops to the cut-in minus differential depends on jumper position.)
setting, the relay and LED indicator will de-energize
(refer to Figure 3).
Using the A319 for Low Temperatures
IMPORTANT: Note the relationship of the The A319ABC-07 can be configured to continue
differential to the dial setting. If the storage cooling to -40°F. This is achieved by combining the
temperature must stay above freezing: cut-in and the differential. [The minimum cut-in
In heating applications the cut-in temperature (-25° F) minus the differential (15°) equals -40° F.]
must be above 32°F.
In cooling applications the cut-in minus the
differential must be above 32°F if the temperature
must stay above freezing.
Models A319ABC-24 and A319ABC-07 are shipped
with the heating/cooling jumper blocks installed in
the horizontal cooling position. Model A319ABC-12
is shipped with the jumper blocks installed in the
vertical heating position (refer to Figure 2).
A319 Electronic Temperature Control Product/Technical Bulletin 3
D imensions
0.5 0.145
13 3.68
3.00
76
70
80
60 160
5 17
14 5
115 130 205
50
190
10 0
40
10
5
2.94 DIN
75 5.00
Rail
127
4.00
102
1.56 0.42 2.40
40 11 61
Diameter 0.3
Sensor
Approximately 8 2.40
2.0 61
51
0.875 Conduit
0.85 22 Hole
21
Figure 4: A319 Control Dimensions, in./mm
I nstallation and Wiring
The A319 Series Temperature Control is housed in a
compact NEMA 1 plastic enclosure with four key-slot
mounting holes on the back for surface mounting. The
! WARNING: Risk of Electric Shock.
mounting hole pattern of the A319 is identical to that of Disconnect the power supply before making electrical
the A19. Provision for standard 35 mm DIN rail connections. Contact with components carrying
mounting is also provided (refer to Figure 4). hazardous voltage can cause electric shock and may
result in severe personal injury or death.
The A319 is not position sensitive but should be
mounted for convenient wiring and adjustment. AVERTISSEMENT : Risque de décharge
électrique. Débrancher l'alimentation avant de réaliser
Note: When mounting the A319 to rigid conduit, tout branchement électrique. Tout contact avec des
attach the hub to the conduit before securing composants conducteurs de tensions dangereuses
the hub to the control enclosure. risque d'entraîner une décharge électrique et de
provoquer des blessures graves, voire mortelles.
Install all wiring to conform to the National
Electrical Code and local regulations. For
maximum electrical rating of control, refer to the
Specifications table or the label inside the control
cover. Use copper conductors only.
4 A319 Electronic Temperature Control Product/Technical Bulletin
Consult the typical wiring diagrams
(+) A319
(Figures 5 and 6) for proper wiring and terminal
Sensor
To
designations. Sensor
(–)
Note: Wire the load to the N.O. contacts to obtain
A319 operation functions (as described in this
bulletin).
AC COM
Sensor Connection and Mounting
240V 120V NC C NO
Connect the sensor to the terminal strip located at
the top left of the printed circuit board (Figure 2).
The sensor leads are interchangeable.
Mount the sensor where it can accurately sense
the temperature of the controlled medium.
Keep conductors as short as possible to minimize
temperature error. Wire resistance will cause a
L
shift in the nominal value by lowering the displayed 1
sensor temperature. L2
Shielded cable is not generally required for sensor
wiring on runs of 50 feet or less, but is
recommended for lengths greater than 50 feet. Load
Refer to Table 1 for the appropriate wire gauge.
When shielded cable is used, connect shield to the
“-” terminal of sensor terminal block (as shown in Figure 6: Typical 240 VAC Wiring
Figures 5 and 6). for the A319 Control
(+) A319
Table 1: Maximum Recommended Sensor
Sensor
To
Sensor Cable Lengths
(–)
Shield
if used. Maximum Sensor Cable Length
Wire A319ABC-12 A319ABC-24
Gauge
AC COM
A319ABC-07
240V 120V
Feet Meters Feet Meters
NC C NO
14 AWG 500 152 800 244
16 AWG 300 91 800 244
18 AWG 185 56 800 244
20 AWG 120 37 800 244
22 AWG 75 23 800 244
Note: At the maximum cable lengths listed for all
120 VAC
models in Table 1, no more than 1°F (0.5°C)
error in the sensed temperature will result
due to the wire resistance. For models
Load A319ABC-07 and A319ABC-24, a maximum
of cable length of 800 feet is recommended to
reduce problems associated with high
frequency noise.
Figure 5: Typical Line Voltage (120 VAC) Wiring
for the A319 Control
A319 Electronic Temperature Control Product/Technical Bulletin 5
A djustments T roubleshooting
IMPORTANT: Verify that the heating/cooling If the control system does not function properly, verify
jumper blocks are in the proper position before that the proper heating/cooling mode is selected and
powering the A319 Electronic Temperature Control. the load is wired to the SPDT relay. Use the following
If the jumper blocks are in the wrong position, the procedures to determine the cause of the problem:
device will activate the relay in response to the 1. Check for proper voltage applied to the A319
opposite signal. The heating or cooling equipment Control.
will remain energized until the error is corrected.
a) Select AC volts on a voltmeter and connect it
between the “AC COM” and “120V” (or “240V”)
1. Remove the A319 cover by loosening the terminals located on the terminal block below
four captive cover screws. the relay (Figure 2).
2. Set the heating/cooling jumper blocks to the b) Verify that the voltage is between 85 and
desired mode of operation. Position the jumper 135 VAC (or 170 and 270 VAC).
blocks vertically for heating or horizontally for
cooling (refer to Figure 2). If the voltmeter reading is within the required
voltage range, proceed to Step 2.
3. Adjust the differential potentiometer “DIFF” as
desired (the number of degrees between relay If the voltmeter reading is not within the
energized and de-energized). Rotate clockwise to required voltage range, check wiring.
increase the differential.
2. Check temperature sensor for proper
4. Replace the cover, fasten in place with the operation.
four screws, and move the cut-in dial to the
desired setting. a) Let the thermometer stabilize and take an
independent temperature reading at the
Note: The A319 is factory calibrated at midscale to a
sensor location (Ts).
tolerance of ±1F° (0.5C°). The cut-in tolerance
at the extreme ends of the cut-in potentiometer b) Disconnect the sensor from the control. Using
rotation in relation to the printed scale plate is an ohmmeter, measure the resistance across
±3F° (1.7C°). the two sensor leads. Consult Table 2:
Nominal Temperature vs. Sensor Resistance
to verify sensor conformance.
C heckout Procedure c) If the sensor’s actual performance deviates
Before applying power, make sure installation and substantially from that measured, replace the
wiring connections are according to job specifications. sensor.
After necessary adjustments and electrical
connections have been made, put the system in 3. Check the A319 for proper operation.
operation and observe at least three complete
operating cycles before leaving the installation. Note: Perform Steps 1 and 2 before performing
this step.
a) Reconnect the sensor to the A319.
b) Change the cut-in temperature by slowly
adjusting the dial until the control relay and
LED turn ON and OFF as shown in Table 3.
c) If the relay does not perform as indicated in
Table 3, replace the A319.
6 A319 Electronic Temperature Control Product/Technical Bulletin
Table 2: Nominal Temperature vs. Table 3: Relay Troubleshooting
Sensor Resistance Action LED N.O. N.C. Cut-in Dial
Relay Relay Setting
Temperature Resistance
Status Status
°F °C ohms
Heating ON Closed Open (Ts)
-30 -34 52571
Heating OFF Open Closed (Ts) + differential
-20 -29 37116
Cooling ON Closed Open (Ts)
-10 -23 26539
Cooling OFF Open Closed (Ts) - differential
0 -18 19208
10 -12 14062
20
30
-7
-1
10408
7784
R epairs and Replacement
Do not make field repairs or calibration. Replacement
40 4 5880 A319 Controls and TE-6300 Series Sensors are
50 10 4484 available through the nearest Johnson Controls
60 16 3450
representative. Refer to Table 4 for ordering
information.
70 21 2678
80 27 2095
90 32 1652
100 38 1313
110 43 1051
120 49 847
130 54 687
140 60 561
150 66 461
160 71 380
170 77 316
180 82 264
190 88 221
200 93 187
210 99 158
220 104 135
A319 Electronic Temperature Control Product/Technical Bulletin 7
Accessory Sensors
The TE-6300-608 Temperature Sensor is available as Outdoor Air Sensor (TE-6343P-1) includes:
a replacement sensor. Accessory sensors with 3 in. thermistor sensor
mounting hardware are also available and some
accessory mounting hardware can be ordered without outdoor air shield
the sensor. (Refer to Table 4: Ordering Information conduit enclosure with cover
and Accessories.) Refer to the TE-6300 Series
Temperature Sensors Product/Technical Bulletin for 1/2 in. EMT conduit connector
details regarding sensor installation. two wire nuts
Duct Probe Sensor (TE-6341P-1) includes: 1.38
35
8 in. thermistor sensor 4.46 3.47
113.3 88.1
quick mount sensor holder
metal mounting plate with four screws and 4.47
locknut 113.5
conduit enclosure with cover
0.67
1/2 in. EMT conduit adapter
17.0 45°
two wire nuts
2.75
69.9 Accessory Mounting Hardware
7.5 max.
190.5
1.63
1.75 42
4.47 44
9.1
113.5
229
Dimensions are 4.47
given as in./mm Sun Shield
SHL10A-603R 113.5
1.72 4.3
110
43.7
4.75
Wall Mount Sensor (TE-6344P-1) includes: 119 3.0 PVC Enclosure
76 Dia.
thermistor sensor 0.36
9.3
white T-4000 style cover and base with 0.88 0.5/13 EMT
silver faceplate and horizontal logo 23 Conduit
Immersion Well Adapter
WEL11A-601R ADP11A-600R
two mounting screws
two wall anchors
two wire nuts
3.13
79 1.81
46
2.13
53
8 A319 Electronic Temperature Control Product/Technical Bulletin
Table 4: Ordering Information and Accessories
Item Product Code Number Description
A319 Temperature Control A319ABC-12-01 Cut-in Range: 100 to 220°F (38 to 105°C)
with sensor Differential: 1 to 30°F (0.5 to 17°C)
Sensor Lead Length: 8 ft (2.4 m)
A319 Temperature Control A319ABC-24-01 Cut-in Range: -20 to 100°F (-30 to 38°C)
with sensor Differential: 1 to 30°F (0.5 to 17°C)
Sensor Lead Length: 8 ft (2.4 m)
A319 Temperature Control A319ABC-07-01 Cut-in Range: -25 to 50°F (-32.5 to 10°C)
with sensor Differential: 1 to 15°F (0.5 to 8°C)
Sensor Lead Length: 8 ft (2.4 m)
A319 Temperature Control A319ABC-12-02 Cut-in Range: 100 to 220°F (38 to 105°C);
without sensor Differential: 1 to 30°F (0.5 to 17°C)
A319 Temperature Control A319ABC-24-02 Cut-in Range: -20 to 100°F (-30 to 38°C);
without sensor Differential: 1 to 30°F (0.5 to 17°C)
A319 Temperature Control A319ABC-07-02 Cut-in Range: -25 to 50°F (-32.5 to 10°C)
without sensor Differential: 1 to 15°F (0.5 to 8°C)
Replacement Temperature Sensors TE-6300-608 NTC Thermistor Sensor with 8 ft (2.4 m) Leads
TE-6300-610 NTC Thermistor Sensor with 12 ft (3.7 m) Leads
TE-6300-606 8 in. NTC Thermistor Sensor with 6 in. (152.4 mm) Leads
TE-6300-607 3 in. NTC Thermistor Sensor with 6 in. (152.4 mm) Leads
Accessory Temperature Sensors* TE-6341P-1 Thermistor Sensor with Duct Insertion Mounting Hardware
TE-6343P-1 Thermistor Sensor with Outdoor Air Mounting Hardware
TE-6344P-1 Thermistor Sensor with Wall Mounting Hardware
Accessory Mounting Hardware WEL11A-601R Immersion Well for use with TE-6300-608
BOX10A-600R PVC Enclosure for Outdoor Mounting of TE-6300-608
SHL10A-603R Sun Shield for use with TE-6300-608 and BOX10A-600R
ADP11A-600R 1/2 in. dia. EMT Conduit Adapter (box of 10) for use with
BOX10A-600R
BKT287-1R 35 x 7.5 mm, 0.305 m (12 in.) long DIN Rail for use with A319
BKT287-2R 35 x 7.5 mm, 0.914 m (36 in.) long DIN Rail for use with A319
PLT344-1R Two End Clamps, for DIN Rail Mounting of A319 Controls
* For additional information on accessory sensors, refer to the TE-6300 Series Temperature Sensors
Product/Technical Bulletin.
A319 Electronic Temperature Control Product/Technical Bulletin 9
Specifications
Product A319 Electronic Temperature Control
Cut-in Range Refer to Table 4: Ordering Information and Accessories
Differential Range Refer to Table 4: Ordering Information and Accessories
Supply Voltage 120 or 208/240 VAC, 50/60 Hz
Power Consumption 1.8 VA Max.
Relay Electrical Ratings SPDT 120V 208V 240V
Horsepower [N.O. (N.C.)]: 1 (0.25) hp 1 (0.33) hp 1 (0.5) hp
Full Load Amperes [N.O. (N.C.)]: 16 (5.8) A 9.2 (4.0) A 8.0 (4.9) A
Locked Rotor Amperes [N.O. (N.C.)]: 96 (34.8) A 55 (24) A 48 (29) A
Non-inductive Amperes [N.O. (N.C.)]: 15 (10) A 10 (10) A 10 (10) A
Pilot Duty: 125 VA (N.O.) @ 24 to 240 VAC
125 VA (N.C.) @ 120 to 240 VAC
50 VA (N.C.) @ 24 VAC
Sensor Type Replaceable Thermistor with Reference Resistance of 2.25K ohms at 77°F (25°C)
Control Ambient Temperature Operating: -30 to 140°F (-34 to 60°C)
Shipping: -40 to 185°F (-40 to 85°C)
Ambient Humidity 0 to 95% RH Non-condensing; Maximum Dew Point: 85°F (29°C)
Control Material Case and Cover: NEMA 1 High-Impact Thermoplastic
Agency Listings UL Listed: File E27734, Guide XAPX
CSA Certified: File LR948, Class 4813 02
The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these specifications,
consult the local Johnson Controls office. Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products.
Building Efficiency
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® Johnson Controls and PENN are registered trademarks of Johnson Controls, Inc. in the
United States of America and/or other countries. All other trademarks used herein are the property
of their respective owners. © Copyright 2014 by Johnson Controls, Inc. All rights reserved.
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