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L8124A,C,E,L AND M AQUASTAT® RELAYS
2
L2
L1
(HOT)
1
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2
CONTROL CASE MUST BE CONNECTED TO EARTH GROUND. USE GROUNDING SCREW PROVIDED.
3
B1 IS 1/4 IN. TAB TERMINAL.
Fig. 5. L8124A in an oil-fired, forced hot water, tankless, zoned, pump system.
LOW VOLTAGE
THERMOSTAT
T
T
1K
R
W
LOW LIMIT/
CIRCULATOR
1K2
Fig. 6. L8124A,C multizone system with circulator connections and internal schematic.
95-6571—11
T87F
L8124A
ZC
T
T
ZR
3
G
L1 C1 C2 B2
B1
L2
PUMP
BLACK
2
L8124A,C
G
1
2
B
1K1
ZR
ZC
B
HIGH
3
LIMIT
R
B1
B2
C1
C2
T87F
T
T
1
3
2
PUMP
R8184
T
F
T
F
ORANGE
TO ADDITIONAL
L2
L1
R845A RELAYS
1
(HOT)
FOR OTHER ZONES
LINE VOLTAGE
OIL BURNER
RELAY OR
GAS VALVE
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
1
OVERLOAD PROTECTION AS REQUIRED.
2
CONTROL CASE MUST BE CONNECTED TO EARTH
GROUND. USE GROUNDING SCREW PROVIDED.
LINE VOLTAGE
3
B1 IS 1/4 IN. TAB TERMINAL.
CIRCULATOR
4
T87F
R845 RELAY
T
T
6
1
3
4
5
2
PUMP
C554
BURNER
AND
IGNITION
R845A RELAY ZONE 2
6
5
3
4
1
2
R845 RELAY
6
4
5
M8822
ZONE 2
CIRCULATOR
ZONE 2
LOW VOLTAGE
THERMOSTAT
M8827
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