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L7224A,C; L7248A,C,L OIL AND ELECTRIC BOILER ELECTRONIC AQUASTAT
VOLTAGE
CIRCULATOR
VOLTAGE
OIL BURNER
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
OPTIONAL OUTDOOR RESET MODULE AND OUTDOOR SENSOR. W8735S1000 WIRED OUTDOOR RESET MODULE SHOWN.
4
ENVIRACOM TERMINALS.
5
OPTIONAL DOMESTIC HOT WATER MODULE AND TEMPERATURE SENSOR.
68-0281EFS—09
ELL=OFF
TO ADDITIONAL R845A
RELAYS FOR OTHER ZONES
1
L1
(HOT) L2
R845A RELAY ZONE 2
ZONE 2
LOW VOLTAGE
THERMOSTAT
L7248L
SENSOR
ZR
L1
LINE
L2
C2
B2
LINE
C1
B1
RELAY
ZC
Fig. 11. L7248L multizone system with circulator connections.
ZONE 2
CIRCULATOR
6
5
3
4
1
2
LOW VOLTAGE
THERMOSTAT
2
T
T 3
2
1
14
®
CONTROLLERS
ENVIRACOM
4
TERMINALS
W8735Y1000 OR
W8735S1000
1 2 3 OT OT
3
C7089U1006
OUTDOOR
SENSOR
W8735S1008
5
DOMESTIC HOT
WATER MODULE
1 2 3 TS TS
32003971-003
TEMPERATURE
SENSOR
M29655A
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