R182J, R482J, R845A, R847A,
R882J, RA89A, RA832A
Switching Relays
These relays provide intermediate or heavy
duty service in a wide variety of switching con-
figurations.
■ Relayswith24Vcontrolcoils:Rl82J,R882J,R847A,
■ Heavy duty relays: R847J.
RA89A, RA832A, and R845A.
■ R847A has flexible internal leads to provide either
■ Relays with line voltage control coils: R482J.
spst or spdt switching.
■ Relays with internal 24V transformer: R182J,
■ RA832A has contacts for low voltage and
RA89A, RA832A, R845A, and R847A.
millivoltage (Powerpile®) use.
■ Relays for use with an external 24V supply: R882J.
CONTENTS
Specifications ................................................. 2
Ordering Information ..................................... 2
Installation ..................................................... 3
Service and Checkout ..................................... 6
J.H. • Rev. 10-94 • ©Honeywell Inc. 1994 • Form Number 60-2481—2
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R182J,R482J,R845A,R847A,R882J,RA89A,RA832A
SPECIFICATIONS • INSTALLATION
a IMPORTANT: The transformer on the R182 can over-
heat when used with a series 20 thermostat if the
total resistance of the thermostat (including thermo-
stat 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.
Fig. 1—Approximate mounting dimensions in
in. [mm].
1
4
4
[108]
5
32
1
[29]
7
8
1
See Table 2 for the ratings of built-in transformer (all
[48]
transformers are rated at 120/240V, 50/60 Hz).
TABLE 2—TRANSFORMER RATINGS.
7
8
[22] DIAMETER
3
32
[2] DIAMETER
KEYHOLE TYPE
MOUNTING HOLE
1
2
Transformer
R847A
Rating (watts)
[13] DIAMETER
7.0
5.0
—
RA89A
RA832A
R845A
1
4
2
[114]
—
R182J
6.5
1
5
4
[133]
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:
3
8
1
2
[10]
3
[89]
3
8
[10]
7
32
[6] DIAMETER MOUNTING HOLE
UnderwritersLaboratoriesInc. 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.
CanadianStandardsAssociationCertified:R482J;R882J;
R847A: File no. LR1620.
15
16
[75]
2
7
8
1
[48]
KNOCKOUT FOR
1/2 (13) CONDUIT (3)
25
32
3
8
[20]
1
[35]
M3823
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.
WARNING
ELECTROCUTION HAZARD.
CAN CAUSE PROPERTY DAMAGE,
SEVERE INJURY, OR DEATH.
Transformer core not bonded.
3. Installer must be a trained, experienced service
technician.
4. After completing installation, use these instructions
to check out product operation.
Disconnect power supply before wring to prevent
electrical shock or equipment damage.
3
60-2481—2
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R182J,R482J,R845A,R847A,R882J,RA89A,RA832A
INSTALLATION
MOUNTING
TABLE 3—WIRE LENGTH SPECIFICATIONS.
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.
Length of Run to
Total Wire
Length
Thermostat
(2 wires)
AWG Wire
Size
(Number)
Feet Metres
Feet
Metres
22
20
18
16
14
120
200
300
500
800
38
61
60
100
1150
250
400
18
30.5
45.6
76
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 mount-
ing surface.
91.5
152.5
244
122
l. 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
l/8 in. [3.2 mm] of the surface.
3. Hang the relay on the screw, position the case, and
start the bottom screw.
Fig. 3—Internal schematic and typical hookup
for RA832A.
LOW VOLTAGE (CLASS 2)
2-WIRE THERMOSTAT
AUXILIARY TO LOW
OR MILLIVOLTAGE
(POWERPILE) LOAD
4. Tighten both screws.
RA832A
IMPORTANT: The switching relay terminals are ap-
T
T
1
X
X
proved 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.
2
3
4
See Figs 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.
L2
LOAD 1
LOAD 2
(OPTIONAL)
L1
HOT
1
POWER SUPPLY. PROVIDE OVERLOAD PROTECTION
AND DISCONNECT MEANS AS REQUIRED.
1
M3821
Fig. 4—Internal schematic and typical hookup
for R182J.
Fig. 2—Internal schematic and typical hookup
for RA89A.
R182J
W
X
R
B
LOW VOLTAGE (CLASS 2)
2-WIRE THERMOSTAT
3
K1
OHMS
K1
K2
RA89A
RA89A (SPST)
2
T
T
JUMPER REMOVED
2
2
1
3
4
K1
K2
L1
JUMPER
L2
4
6
3
7
TO LOAD
2
1
3
4
L1
HOT
L2
1
LOAD
LOAD
CONTROLLER
(IF USED)
1
1
N.C.
N.C.
N.O.
N.O.
L1
(HOT)
L2
L2
TO LOAD
L1
HOT
1
POWER SUPPLY. PROVIDE OVERLOAD PROTECTION AND
DISCONNECT MEANS AS REQUIRED.
1
2
POWER SUPPLY. PROVIDE OVERLOAD PROTECTION
AND DISCONNECT MEANS AS REQUIRED.
1
2
N.O. CONTACTS MAKE BEFORE N.C CONTACTS BREAK,
AND N.C. CONTACTS MAKE BEFORE N.O. CONTACTS BREAK.
COMPLETE WIRING AS SHOWN ABOVE.
M3819
M8232
60-2481—2
4
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R182J,R482J,R845A,R847A,R882J,RA89A,RA832A
INSTALLATION
Fig. 5—Thermostat connections for R182J.
Fig. 7—Schematic diagram showing R845A in
multizone, forced hydronic heating system.
This arrangement is suitable for any number
of additional zones.
THREE-WIRE
LOW VOLTAGE
(SERIES 10)
THREE-WIRE
LOW VOLTAGE
(SERIES 20)
TWO-WIRE
LOW VOLTAGE
(SERIES 80)
THERMOSTAT
2
1
THERMOSTAT
THERMOSTAT
HYDRONIC HEATING
CONTROL TERMINALS
TO ADDITIONAL R845A
RELAYS FOR OTHER ZONES
R
B
W
B
R
W
T
RA845A RELAY
THERMOSTAT
ZONE 1
THERM.
T
2
THERMOSTAT
ZONE 2
1
ZC
ZP
R
R
X
B
R
X
B
W
X
B
W
W
4
3
R182J
R182J
R182J
B1
BURNER
CONTROL
5
6
BURNER
JUMPER
B2
MAKES CONTACT ON TEMPERATURE FALL ONLY.
1
2
C1
MAKES CONTACT ON BOTH A TEMPERATURE RISE AND FALL.
M8233A
CIRC.
CIRCULATOR
ZONE 1
CIRCULATOR
ZONE 2
C2
L1
HOT
1
LINE
2
2
3
1
Fig. 6—Internal schematic and typical hookup
for R482J.
L2
R482J
POWER SUPPLY. PROVIDE OVERLOAD PROTECTION
AND DISCONNECT MEANS AS REQUIRED.
1
2
IF CONTROLLING TWO LOADS, USE:
3 AND 4 FOR LINE VOLTAGE LOAD
5 AND 6 FOR LINE OR LOW VOLTAGE LOAD
3
IF USING LOW VOLTAGE, USE A SEPARATE TRANSFORMER.
M3822
Fig. 8—R845A hookup for controlling two
loads.
3
3
LOW VOLTAGE (CLASS 2)
2-WIRE THERMOSTAT
1
2
4
5
6
3
7
8
CONTROLLER
1
2
R845A
T
2
T
1
L1
(HOT)
N.O. N.C. COM. N.O.
COM.
N.C.
TO LOAD
TO LOAD
L2
POWER SUPPLY. PROVIDE OVERLOAD PROTECTION
AND DISCONNECT MEANS AS REQUIRED.
1
2
4
3
5
6
CONTROLLER (IF USED) MUST BE SNAP ACTION OR
MERCURY SWITCH TYPE.
3
1
N.O. CONTACTS MAKE BEFORE N.C CONTACTS BREAK,
AND N.C. CONTACTS MAKE BEFORE N.O. CONTACTS BREAK.
3
2
1
1
M8234
TO
POWER
TO
POWER
L1
L2 HOT
LOAD 1
LOAD 2
POWER SUPPLY. PROVIDE OVERLOAD PROTECTION
AND DISCONNECT MEANS AS REQUIRED.
1
2
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
3
TRANSFORMER.
M3820
5
60-2481—2
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R182J,R482J,R845A,R847A,R882J,RA89A,RA832A
INSTALLATION • SERVICE AND CHECKOUT
Fig. 9—Internal schematic and hookup for
R847A.
Fig. 11—Internal view of RA832A Switching
Relay.
LOW VOLTAGE (CLASS 2)
2-WIRE THERMOSTAT
T
T
X
X
R847A
T
T
RELAY
L2
L1
4
3
7
6
24V TRANSFORMER
4
1
4
3
1
2
1
TO
POWER
TO
POWER
L1
(HOT)
LOAD 2
L2
LOAD 1
POWER SUPPLY. PROVIDE OVERLOAD PROTECTION
AND DISCONNECT MEANS AS REQUIRED.
1
2
2
1
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.
3
4
3
4
10 AMP CONTACT RATING OR 20 AMP WHEN POLES
ARE CONNECTED IN PARALLEL.
M8231B
M3824
Fig. 10—Internal schematic and hookup for
R882J.
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.
CONTROLLER
LOW VOLTAGE
SOURCE
R882J
2
1
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.
3
3
4
5
6
3
7
8
N.O. N.C. COM. N.O.
LOAD
COM.
N.C.
LOAD
M8235
Home and Building Control
Honeywell Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
Home and Building Control
Honeywell Limited—Honeywell Limitée
740 Ellesmere Road
Scarborough, Ontario
M1P 2V9
Helping You Control Your World
QUALITY IS KEY
Printed in U.S.A.
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