Honeywell Switch R182J User Manual

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 60-24812
 
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  
 
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
 
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  
 
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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