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L4006,7,8; L6006,7,8 AQUASTAT
®
CONTROLLERS
13 60-2104—10
Fig. 20. Typical oil-fired gravity system.
Fig. 21. L6008A used to control cooling
equipment and indicating light.
Fig. 22. Typical oil-fired hydronic
system with domestic hot water.
Fig. 23. Typical oil-fired hydronic heating system that
provides year-round domestic hot water using RA832A.
Fig. 24. Typical connection diagram for an oil-fired,
hydronic heating system that provides year-round
domestic hot water using RA817A.
L1
(HOT)
L2
1
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
PROTECTORELAY
CONTROL
L4006A OR L4007A HIGH
LIMIT CONTROLLER
IGNITION
24 VOLT
THERMOSTAT
BURNER
MOTOR
OIL VALVE
(IF USED)
M1054B
1
2
3
4
T
T
L1
(HOT)
L2
1
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
L6008A
CIRCULATOR AND
LOW LIMIT
CONTROLLER
R
W
B
M8780A
COOLING
EQUIPMENT
INDICATING
LIGHT
L1
(HOT)
L2
1
3 4
2
1
2
3
4
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
L6006C USED AS HIGH LIMIT CONTROL.
L6006C USED AS AN OPERATING CONTROL.
R-B OPENS, R-W CLOSES ON TEMPERATURE RISE.
M8960B
PROTECTORELAY
CONTROL
HIGH LIMIT
CONTROLLER
CIRCULATOR
AND LOW
LIMIT CONTROL
W
R
B
1
2
4
3
T
T
IGNITION
BURNER
MOTOR
24V
THERMOSTAT
SWITCHING RELAY
CIRCULATOR
LINE VOLTAGE
LOW VOLTAGE
1
2
3
4
T
T
IGNITION
BURNER
L4006B OR L4007B
CIRCULATOR
AQUASTAT
CONTROLLER
CIRCULATOR
L4006A OR L4007A LOW LIMIT
AQUASTAT CONTROLLER
L1
(HOT)
L2
L4006A OR L4007A
HIGH LIMIT
AQUASTAT
CONTROLLER
24 VOLT
THERMOSTAT
RA832A
SWITCHING RELAY
PROTECTORELAY
CONTROL
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
USE L4006E FOR MANUAL RESET.
1
2
M2855B
TT
XX
4
2
1
1
2
®
®
®
L1
(HOT)
L2
1
1
2
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
SELECT MODELS HAVE 1/4 IN. (6) TAB TERMINAL FOR W TERMINAL.
L4008A OR E
HIGH LIMIT
CONTROLLER
L6008A CIRCULATOR
LOW LIMIT CONTROLLER
R
W
B
CIRCULATOR
IGNITION
TRANSFORMER
RA89A RELAY
RA817A
PROTECTORELAY
CONTROL
BURNER MOTOR
24V THERMOSTAT
2
13
4
T
T
1
2
3
4
M8785B
2