TRADELINE®
R182J, R482J, R845A, R847A, RA89A, RA832A Switching Relays
Application
These relays can be used for a variety of switching applications. Typically they provide control of lineor low-voltage devices by a low voltage controller. See Table 1.
TABLE 1—SWITCHING RELAY SPECIFICATIONS.
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Coil |
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Contact |
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Voltage |
Relay Coil |
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Voltage |
Switch |
Control |
(Vac at |
Current |
Ratings (A) |
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Application |
(50/60 Hz) |
Action |
Circuit |
50/60 Hz) |
(A) |
AFL |
ALR |
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R182J |
For 24V thermostat |
120 |
Dpdt |
3-wire |
24 |
0.40a |
7.4 |
44.4 |
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control of line voltage |
240 |
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3.7 |
22.2 |
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devices. |
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R482J |
Controlled by a line |
120 |
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2-wire |
120 |
0.08 |
7.4 |
44.4 |
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voltage controller |
208/240 |
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208/240 |
0.04 |
3.7 |
22.2 |
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R845A |
For hot water zone control |
120 |
Dpst |
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24 |
0.40 |
7.4 |
44.4 |
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systems or spst control of |
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two separate loads. |
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R847A |
Provides switching for |
120 |
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22 |
100 |
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high-current loads such as |
240 |
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10 |
50 |
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cooling compressors. |
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RA89A |
For switching one line |
120 |
Spst |
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10.2 |
61.2 |
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voltage load. |
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RA832A |
For switching two line |
120 |
Dpst |
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7.4 |
44.4 |
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voltage loads with a |
240 |
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3.7 |
22.2 |
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common power source. |
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a IMPORTANT: The transformer on the R182 can overheat when used with a series 20 thermostat if the total resistance of the thermostat circuit exceeds 2.5 ohms. If the measured resistance of the thermostat (including thermostat wire and thermostat contact resistance) exceeds 2.5 ohms, add a 100 ohm, 10 watt resistor between the W and R terminals. Table 2 gives maximum thermostat wire runs; if longer runs are necessary, measure the resistance or add a 100 ohm, 10 watt resistor across terminals W and R.
TABLE 2—LENGTH OF WIRE.
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AWG |
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Length of Run |
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Wire |
Total Wire |
to Thermostat |
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Size |
Length |
(Wires) |
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(Number) |
Feet |
Meters |
Feet |
Meters |
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22 |
120 |
38.0 |
60 |
18.0 |
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20 |
200 |
61.0 |
100 |
30.5 |
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18 |
300 |
91.5 |
150 |
45.5 |
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16 |
500 |
152.5 |
250 |
76.0 |
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14 |
800 |
244.0 |
400 |
122.0 |
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J.H. • Rev. 101-94 • ©Honeywell Inc. 1994 • Form Number 69-0791—3
Installation
WHEN INSTALLING THIS PRODUCT…
1.Read these instructions carefully. Failure to follow instructions can damage product or cause a hazardous condition.
2.Check the ratings given in the instructions and on the product to make sure the product is suitable for your application.
3.Make sure installer is a trained, experienced service technician.
4.After completing installation, use these instructions to check out product operation.
WARNING
ELECTROCUTION HAZARD CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY, OR DEATH.
Transformer core not bonded.
Disconnect power supply before wiring to prevent electrical shock or equipment damage.
MOUNTING
For replacement, mount the relay in the same location as the old relay. If this is a new installation, locate the relay vertically on a solid wall or partition as close as possible to the device to be controlled. Select a location that is easily accessible for installation and service.
NOTE: To reduce the possible transformer hum and relay noise that is sometimes amplified by mounting surfaces such as sheetmetal, plasterboard, and similar materials, place rubber or felt washers between the case and the mounting surface.
1.Position the relay and mark the mounting holes. See Fig. 1.
2.Start a screw for the keyhole type mounting hole in the upper right corner. Screw it down within about 1/8 in. [3 mm] of the surface.
3.Hang the relay on the screw, position the case, and start the bottom screw.
4.Tighten both screws.
WIRING
All wiring must comply with all applicable electrical codes, ordinances, and regulations. Follow any instructions furnished with the controlled equipment.
IMPORTANT: The switching relay terminals are approved for use with copper wires only.
See Figs. 2 through 9 for hookup diagrams for these relays. When two or more devices are to be controlled in parallel, the total current must not exceed the relay load rating. Fig. 11 is an internal view of the RA832A showing terminal locations and barriers.
Never connect load terminals to a load that takes more current than the amount listed in the electrical ratings on the relay.
Fig. 1—Approximate mounting dimensions in in. [mm].
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4 |
1 |
[108] |
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1 |
5 |
[29] |
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4 |
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32 |
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1 |
7 |
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8 |
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[48] |
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7 |
[22] DIAMETER |
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3 |
[2] DIAMETER |
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1 |
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32 |
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KEYHOLE TYPE |
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2 |
[13] DIAMETER |
MOUNTING HOLE |
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4 |
1 |
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2 |
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[114] |
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5 |
1 |
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4 |
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[133] |
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1 |
[89] |
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3 |
[10] |
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2 |
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3 |
[10] |
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[6] DIAMETER MOUNTING HOLE |
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215 |
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16 |
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[75] |
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1 |
7 |
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8 |
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[48] |
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25 |
[20] |
13 |
[35] |
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KNOCKOUT FOR |
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32 |
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8 |
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1/2 (13) CONDUIT (3) |
M3823 |
Fig. 2—Internal schematic and typical hookup for RA89A.
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LOW VOLTAGE (CLASS 2) |
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2-WIRE THERMOSTAT |
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T |
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T |
RA89A (SPST) |
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2 |
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RA89A |
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JUMPER REMOVED |
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2 |
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1 |
3 |
4 |
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JUMPER |
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2 |
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1 |
3 |
4 |
L2 |
1 |
L1 |
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TO LOAD |
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HOT |
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CONTROLLER |
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1 |
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(IF USED) |
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L2 |
1 |
L1 |
TO LOAD |
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HOT |
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1POWER SUPPLY. PROVIDE OVERLOAD PROTECTION AND DISCONNECT MEANS AS REQUIRED.
2 COMPLETE WIRING AS SHOWN ABOVE. |
M3819 |
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69-0791—3 |
2 |