L7224U OIL ELECTRONIC AQUASTAT
R7184
5
ENVIRACOM™
TERMINAL
TO REMOTE
ALARM
2
CIRCUIT
LEGEND
SCREW TERMINAL
SOLDERLESS WIRE CONNECTION
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2
OPTIONAL FEATURE ON SELECT MODELS.
3
REFER TO DEVICE LABEL FOR WIRE COLOR CODE.
Fig. 11. L7224U multizone system with circulator connections and EnviraCOM™ thermostat.
69-1720EFS—01
®
CONTROLLER
3
2
TH9421C
T
LIMIT
T 3
L1
L2
2
1
3
BURNER
BURNER
MOTOR
MOTOR
3
IGNITOR
IGNITOR
3
VALVE
VALVE
CAD
CAD
CELL
CELL
JUNCTION
BOX
1/4 IN. (6 MM) QUICK CONNECT TERMINAL
50022037-002
OUTDOOR
RESET MODULE
1
1 2 3 OT OT
6
C7089U
OUTDOOR
SENSOR
L1
2
1
3
(HOT) L2
1
L7224
SENSOR
ZR
L1
LINE
VOLTAGE
L2
CIRCULATOR
C2
4
B2
C1
B1
ZC
4
VALVE IS OPTIONAL ON SPECIFIED MODELS.
5
ENVIRACOM™ TERMINAL 3 IS ALSO THE FIRST THERMOSTAT TERMINAL.
6
OPTIONAL OUTDOOR RESET MODULE AND OUTDOOR SENSOR.
12
T
T 3
2
1
M29686