resideo R182J User manual

PRODUCT DATA
60-2481-03
R182J, R482J, R845A, R847A, R882J,
RA89A, RA832A Switching Relays
APPLICATION
These relays provide intermediate or heavy duty service in a
wide variety of switching configurations.
FEATURES
• Relays with 24V control coils: Rl82J, R882J, R847A,
RA89A, RA832A, and R845A.
• Relays with line voltage control coils: R482J.
• Relays with internal 24V transformer: R182J, RA89A,
RA832A, R845A, and R847A.
• Relays for use with an external 24V supply: R882J.
• Heavy duty relays: R847J.
• R847A has flexible internal leads to provide either spst or
spdt switching.
• RA832A has contacts for low voltage and millivoltage
(Powerpile®) use.
RA89 A 116
HAZARD OF ELECTRICAL SHOCK.
TRANSFOMER CORE NOT BONDED.
MORE THAN ONE DISCONNECT
SWITCH MAY BE REQUIRED TO
DE-ENERGIZE THE DEVICE BEFORE
SERVICING.
RESQUE DE SECOUSSE ÉLECTRIQIQUE.
LE NOYAU DU TRANFORMATEUR
N’EST PAS RELIÈ À LA TERRE.
LA MISE HORS TENSION DE
L’APPAREIL PEUT NÉCESSITER
PLUS D’UN DISJONCTEUR.
WARNING
!
M38612
WEEKLY
TEST
OFF
ON
FIRE AND SMOKE ALARM
CONTROL CENTER
M38610

R182J, R482J, R845A, R847A, R882J, RA89A, RA832A SWITCHING RELAYS
60-2481—03 2
SPECIFICATIONS
IMPORTANT:
The specifications given in this publication do not
include normal manufacturing tolerances. There-
fore, this unit may not exactly match the listed spec-
ifications Also, this product is tested and calibrated
under closely controlled conditions, and some minor
differences in performance can be expected if those
conditions are changed.
Models: See Table 1
aSee footnote on page 3.
aIMPORTANT:
The transformer on the R182 can overheat when
used with a series 20 thermostat if the total resis-
tance 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 ther-
mostat wire runs; if longer runs are necessary, mea-
sure the resistance or add a 100 ohm, 10 watt
resistor across terminals W and R.
See Table 2 for the ratings of built-in transformer (all
transformers are rated at 120/240V, 50/60 Hz).
FINISH: Gray enamel.
KNOCKOUTS:
Case bottom: (2) RA89A, RA832A, R845A; (3) Rl82J,
R482J, R882J.
All models have 1 wiring hole in case top.
All knockouts are for 1/2 in. [12.7 mm] conduit.
APPROVALS:
Underwriters Laboratories Inc. Listed: RA89A; RA832A,
R882J; R845A: File no. E4436, Guide no. XAPX. R482J:
File no. E14480, Guide no. NLDS. R847A: File no.
SA481, Guide no. SDFY.
Canadian Standards Association Certified: R482J; R882J;
R847A: File no. LR1620.
Table 1. Switching Relay Specifications.
Models Application
Voltage
(50/60 Hz)
Switch
Action
Control
Circuit
Coil
Voltage
(Vac at
50/60 Hz)
Relay Coil
Current
(A)
Contact
Ratings (A)
AFL ALR
R182J For 24V thermostat control
of line voltage devices.
120 Dpdt 3-wire 24 0.40a7.4 44.4
240 3.7 22.2
R482J Controlled by a line
voltage controller
120 2-wire 120 0.08 7.4 44.4
208/240 208/240 0.04 3.7 22.2
R845A For hot water zone control
systems or spst control of
two separate loads.
120 Dpst 24 0.40 7.4 44.4
R847A Provides switching for
high-current loads such as
cooling compressors.
120 22 100
240 10 50
R882J For use with separate low
voltage power source.
24 Dpdt 7.4 44.4
RA89A For switching one line
voltage load.
120 Spst 10.2 61.2
RA832A For switching two line
voltage loads having a
common power source.
120 Dpst 7.4 44.4
240 3.7 22.2
Table 2. Transformer Ratings.
Transformer Rating (watts)
R847A 7.0
RA89A 5.0
RA832A —
R845A —
R182J 6.5

R182J, R482J, R845A, R847A, R882J, RA89A, RA832A SWITCHING RELAYS
360-2481—03
Fig. 1. Approximate mounting dimensions in in. [mm].
INSTALLATION
When Installing this Product…
1. Read these instructions carefully. Failure to follow
them could damage the 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. Installer must be a trained, experienced service techni-
cian.
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 wring to prevent
electrical shock or equipment damage.
Mounting
For replacement, mount the relay in the same location as the
old control. If this is a new installation, locate the relay
vertically on a solid wall or partition as near as possible to
the device to be controlled. Select a location that is easily
accessible for installation and service.
NOTE: To reduce possible transformer hum and relay noise
that can be amplified by mounting surfaces of
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-hand corner. Turn down screw within about
1/8 in. [3.2 mm] of the surface.
3. Hang the relay on the screw, position the case, and
start the bottom screw.
4. Tighten both screws.
IMPORTANT:
The switching relay terminals are approved for use
with copper wires only.
All wiring must comply with all applicable electrical codes,
ordinances, and regulations. Follow any instructions
furnished with the controlled equipment.
See Fig. 2 through 10 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. See Table 3 for wiring length specifications.
Fig. 2. Internal schematic and typical hookup for RA89A.
4-
(114)
1
2
(48)
7
8
3
8(10)
3
8(10)
5
32
1- (29)
1
4
4- (108)
1
2
3- (89)
5-
(133)
1
4
3
32 (2) DIAMETER
1
2(13) DIAMETER KEYHOLE TYPE
MOUNTING HOLE
7
8(22) DIAMETER
7
32 (6) DIAMETER MOUNTING HOLE
1-
(48)
7
8
25
32 (20) KNOCKOUT FOR
1/2 (13) CONDUIT (3)
3
8
1- (35) M3823C
2-
(75)
15
16
1-
L1
HOT
L2
TT
21 34
1
1
TO LOAD
LOW VOLTAGE (CLASS 2)
2-WIRE THERMOSTAT
RA89A (SPST)
JUMPER
L1
HOT
L2
21 34
1TO LOAD
RA89A
JUMPER REMOVED
2
CONTROLLER
(IF USED) 1
POWER SUPPLY. PROVIDE OVERLOAD PROTECTION
AND DISCONNECT MEANS AS REQUIRED.
COMPLETE WIRING AS SHOWN ABOVE.
2
M3819B

R182J, R482J, R845A, R847A, R882J, RA89A, RA832A SWITCHING RELAYS
60-2481—03 4
Fig. 3. Internal schematic and typical hookup for RA832A.
Fig. 4. Internal schematic and typical hookup for R182J.
Fig. 5. Thermostat connections for R182J.
Fig. 6. Internal schematic and typical hookup for R482J.
Table 3. Wire Length Specifications
AWG Wire
Size
(Number)
Total Wire
Length
Length of Run to
Thermostat
(2 wires)
Feet Meters Feet Meters
22 120 38 60 18
20 200 61 100 30.5
18 300 91.5 150 45.6
16 500 152.5 250 76
14 800 244 400 122
L1
HOT
L2
TT
21 34
1
1
LOAD 2
(OPTIONAL)
LOW VOLTAGE (CLASS 2)
2-WIRE THERMOSTAT
RA832A
POWER SUPPLY. PROVIDE OVERLOAD PROTECTION
AND DISCONNECT MEANS AS REQUIRED. M3821B
LOAD 1
XX
AUXILIARY TO LOW
OR MILLIVOLTAGE
(POWERPILE) LOAD
L1
(HOT)
L2 1
2
1
2
N.O. N.C. N.O. N.C.
WXRB
L1 L2 4376
R182J
K1
K1
K1
K2
K2
POWER SUPPLY. PROVIDE OVERLOAD PROTECTION AND
DISCONNECT MEANS AS REQUIRED.
N.O. CONTACTS MAKE BEFORE N.C CONTACTS BREAK,
AND N.C. CONTACTS MAKE BEFORE N.O. CONTACTS BREAK. M8232B
LOAD LOAD
3
OHMS
W
W
R
R
BWR
B
B
X
R182J
WRBX
R182J
WRBX
R182J
THREE-WIRE
LOW VOLTAGE
(SERIES 10)
THERMOSTAT
THREE-WIRE
LOW VOLTAGE
(SERIES 20)
THERMOSTAT
TWO-WIRE
LOW VOLTAGE
(SERIES 80)
THERMOSTAT
12
1
2
MAKES CONTACT ON TEMPERATURE FALL ONLY.
MAKES CONTACT ON BOTH A TEMPERATURE RISE AND FALL. M8233C
JUMPER
12
3
3
3
1
2
R482J
N.O.
N.C. N.C.
5376
N.O.
4
2
18
POWER SUPPLY. PROVIDE OVERLOAD PROTECTION
AND DISCONNECT MEANS AS REQUIRED.
CONTROLLER (IF USED) MUST BE SNAP ACTION OR
MERCURY SWITCH TYPE.
N.O. CONTACTS MAKE BEFORE N.C CONTACTS BREAK,
AND N.C. CONTACTS MAKE BEFORE N.O. CONTACTS BREAK.
M8234C
CONTROLLER
L1
(HOT)
L2 TO LOAD TO LOAD
COM. COM.

R182J, R482J, R845A, R847A, R882J, RA89A, RA832A SWITCHING RELAYS
560-2481—03
Fig. 7. Schematic diagram showing R845A in multizone,
forced hydronic heating system. This arrangement is suitable
for any number of additional zones.
Fig. 8. R845A hookup for controlling two loads.
Fig. 9. Internal schematic and hookup for R847A.
Fig. 10. Internal schematic and hookup for R882J.
L1
HOT
L2
2
1
3
4
1
1
RA845A RELAY
POWER SUPPLY. PROVIDE OVERLOAD PROTECTION
AND DISCONNECT MEANS AS REQUIRED.
IF CONTROLLING TWO LOADS, USE:
3 AND 4 FOR LINE VOLTAGE LOAD
5 AND 6 FOR LINE OR LOW VOLTAGE LOAD
IF USING LOW VOLTAGE, USE A SEPARATE TRANSFORMER. M3822C
T
T
THERMOSTAT
ZONE 1
ZC
ZP
B1
B2
C1
C2
1
2
BURNER
CIRC.
LINE
THERM.
BURNER
CONTROL
CIRCULATOR
ZONE 1
2
3
THERMOSTAT
ZONE 2
CIRCULATOR
ZONE 2
TO ADDITIONAL R845A
RELAYS FOR OTHER ZONES
HYDRONIC HEATING
CONTROL TERMINALS
2
3
5
6
L1
HOT
L2
TT
21 34
1
1
TO
POWER
LOW VOLTAGE (CLASS 2)
2-WIRE THERMOSTAT
R845A
POWER SUPPLY. PROVIDE OVERLOAD PROTECTION
AND DISCONNECT MEANS AS REQUIRED.
WHEN CONTROLLING TWO LOADS, USE 3 AND 4
FOR LINE VOLTAGE LOAD AND 5 AND 6 FOR LINE
OR LOW VOLTAGE LOAD.
IF USING LOW VOLTAGE, USE A SEPARATE
TRANSFORMER.
2
M3820B
65
LOAD 1
TO
POWER LOAD 2
11
2
3
3
L1
(HOT)
L2
TT
L2 L1 3
4
1
1
TO
POWER
LOW VOLTAGE (CLASS 2)
2-WIRE THERMOSTAT
R847A
POWER SUPPLY. PROVIDE OVERLOAD PROTECTION
AND DISCONNECT MEANS AS REQUIRED.
WHEN CONTROLLING TWO LOADS, USE 3 AND 4
FOR LINE VOLTAGE LOAD AND 5 AND 6 FOR LINE
OR LOW VOLTAGE LOAD.
IF USING LOW VOLTAGE, USE A SEPARATE
TRANSFORMER.
2
M8231C
67
LOAD 1
TO
POWER LOAD 2
11
2
3
3
3
3
R882J
N.O.
N.C. N.C.
537 6
N.O.
4
21
8
M8235
A
CONTROLLER
LOAD LOAD
COM. COM.
LOW VOLTAGE
SOURCE

R182J, R482J, R845A, R847A, R882J, RA89A, RA832A SWITCHING RELAYS
60-2481—03 6
Fig. 11. Internal view of RA832A Switching Relay.
SERVICE AND CHECKOUT
1. Never use oil on any part of the relay coil or contacts.
2. Keep the cover on the relay during normal operation
and remove only for service and checkout.
3. Relay contacts require no cleaning; contacts close with
a wiping action and are self-cleaning. They may turn
black after being in service for some time; however, this
discoloration does not prevent proper operation.
4. After installation is complete, operate system through
at least one cycle from the controller to make certain
the relay controls the equipment as intended.
M3824B
24V TRANSFORMER
RELAY
12
34
T
T
X
X

R182J, R482J, R845A, R847A, R882J, RA89A, RA832A SWITCHING RELAYS
760-2481—03

R182J, R482J, R845A, R847A, R882J, RA89A, RA832A SWITCHING RELAYS
© 2021 Resideo Technologies, Inc. All rights reserved.
This product is manufactured by Resideo Technologies, Inc. and its affiliates.
www.resideo.com
Resideo Technologies, Inc.
1985 Douglas Drive North, Golden Valley, MN 55422
1-800-468-1502
60-2481—03 M.S. Rev. 04-21 | Printed in United States