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L7224A,C; L7248A,C,L OIL AND ELECTRIC BOILER ELECTRONIC AQUASTAT
®
CONTROLLERS
13 68-0281—16
Fig. 11. L7248L multizone system with circulator connections.
M29655A
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
1
CONTROL CASE MUST BE CONNECTED TO EARTH GROUND. USE GROUNDING SCREW PROVIDED.
2
3
L1
(HOT)
L2
1
2
1
4
5
6
ZONE 2
LOW VOLTAGE
THERMOSTAT
R845A RELAY ZONE 2
ZONE 2
CIRCULATOR
TO ADDITIONAL R845A
RELAYS FOR OTHER ZONES
C1
B1
ZC
L2
LINE
C2
ZR
L1
B2
T
T3
2
1
SENSOR
LINE
VOLTAGE
CIRCULATOR
LINE
VOLTAGE
OIL BURNER
RELAY
2
LOW VOLTAGE
THERMOSTAT
L7248L
ELL=OFF
OPTIONAL OUTDOOR RESET MODULE AND OUTDOOR SENSOR. W8735S1000 WIRED OUTDOOR RESET MODULE SHOWN.
ENVIRACOM TERMINALS.
OPTIONAL DOMESTIC HOT WATER MODULE AND TEMPERATURE SENSOR.
3
4
5
1 2 3 OT OT
C7089U1006
OUTDOOR
SENSOR
W8735Y1000 OR
W8735S1000
1 2 3 TS TS
W8735S1008
DOMESTIC HOT
WATER MODULE
32003971-003
TEMPERATURE
SENSOR
4
ENVIRACOM
TERMINALS
3
5