3 69-0791—3

Fig. 3—Internal schematic and typical hookup

for RA832A.

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. M3821

LOAD 1

XX

AUXILIARY TO LOW

OR MILLIVOLTAGE

(POWERPILE) LOAD

Fig. 6—Internal schematics and typical hookup

for R482J.

12
3
3
3
1
2
R482J
N.O.
N.C. N.C.
537
6
N.O.
421 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.
M8234
CONTROLLER
L1
(HOT)
L2 TO LOAD TO LOAD
COM. COM.

Fig. 4—Internal schematic and typical hookup

for R182J.

Fig. 7—Schematic diagram showing R845A in

multizone, forced hydronic heating system.

This arrangement is suitable for any number of

additional zones.

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.
M3822
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 1
2
1
2
N.O. N.C. N.O. N.C.
WX RB
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.
M8232
LOAD LOAD
3
OHMS

Fig. 5—Thermostat connections for R182J.

W
W
R
R
BWRB
BX
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.
M8233A
JUMPER