Installation Guide
R182J, R482J, YHR845A,R847A, RA89A, RA832A SWITCHING RELAYS
3 69-2041
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 schematics and typical hookup for
R482J.
Fig. 7. Schematic diagram showing YHR845A in
multizone, forced hydronic heating system. This
arrangement is suitable for any number of additional
zones.
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.
M3821A
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.
WX RB
L1
L2
4
37
6
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.
M8232A
LOAD
LOAD
3
OHMS
W
W
R
R
B
W
RB
BX
R182J
W
R
BX
R182J
W
R
BX
R182J
THREE-WIRE
LOW VOLTAGE
(SERIES 10)
THERMOSTAT
THREE-WIRE
LOW VOLTAGE
(SERIES 20)
THERMOSTAT
TWO-WIRE
LOW VOLTAGE
(SERIES 80)
THERMOSTAT
1
2
1
2
MAKES CONTACT ON TEMPERATURE FALL ONLY.
MAKES CONTACT ON BOTH A TEMPERATURE RISE AND FALL.
M8233B
JUMPER
1
2
3
3
3
1
2
R482J
N.O.
N.C.
N.C.
5
37
6
N.O.
4
21
8
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.
M8234A
CONTROLLER
L1
(HOT)
L2
TO LOAD
TO LOAD
COM. COM.
L1
HOT
L2
2
1
3
4
1
1
YHRA845A 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.
M23784
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 YHR845A
RELAYS FOR OTHER ZONES
HYDRONIC HEATING
CONTROL TERMINALS
2
3
5
6