Honeywell Aquastat L8124B Product Data page 8

L8124A,B,C,E,G,L,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. 11. L8124A in an oil-fired, forced hot water, tankless, zoned, pump system.
60-2061—10
T87F
L8124A
ZC
T T
ZR
3
G L1 C1 C2 B2 B1
L2
PUMP
R8184
BLACK
LOW VOLTAGE
THERMOSTAT
T
T
1K2
1K
W R
B
LOW LIMIT/
CIRCULATOR
POWER SUPPLY. PROVIDE
1
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. 12. L8124B single zone connections and internal schematic.
T87F
R845 RELAY
T T
1 2 3 4 5
PUMP
T F
C554
T F
ORANGE
L8124B
2
G
L1
1
(HOT)
2
L2
1K3
1K1
LINE VOLTAGE
R
CIRCULATOR
HIGH
C1
LIMIT
B
C2
3
B1
B2
MILLIVOLTAGE
POWERPILE®
GAS VALVE
8
T87F
R845 RELAY
T T
6 1 2 3 4 5 6
PUMP
BURNER
AND
IGNITION
M8822
1
TH
TH
PP
PP
M8842