Manual

5
RELAY
CONTACTS
CIRCULATOR
PRIMARY
SECONDARY
(24VAC)
WHITE
RELAY
THERMOSTAT
RELAY
CONTACTS
TEMPERATURE
LIMIT
CONTROL
PRESSURE
LIMIT
CONTROL
GAS
VALVE
YELLOW
RED
YELLOW
1˚
Model
RB-24E
SERVICE SWITCH
(BY OTHERS)
120 VAC
H N
Option 3
Certain types of boilers may utilize a
relay or series of relays to control the
burner and circulator circuits. To wire into
a boiler of this type, the Model RB-24E
can be wired as shown.
YELLOW
YELLOW
RED
WHITE
SERVICE SWITCH
(BY OTHERS)
CIRCULATOR
EQUIPMENT
GROUND
120 VAC
PRIMARY
THERMOSTAT
SPILL
SWITCH
LOW WATER
CUT-OFF
(WHEN USED)
ROLLOUT
IFE LIMIT
GAS VALVE
TO
PILOT
RELITE
CONTROL
CR1
CABLE TO
DAMPER
CR
H N
CR2
24
V.A.C.
C
R
O
YW
T1
T2
G
RB-24E
Option 4
Some boiler wiring diagrams indicate
where a LWCO should be wired. In
this diagram the RB-24E can be wired
as shown.