Honeywell AQUASTAT L8124E - Manual (Page 4)

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