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L7224A,C; L7248A,C,L OIL ELECTRONIC AQUASTAT
®
CONTROLLERS
13 68-0281EFS—05
Fig. 11. L7248L multizone system with circulator connections.
M29655
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
T 3
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.
ENVIRACOM TERMINALS.
OPTIONAL DOMESTIC HOT WATER MODULE AND TEMPERATURE SENSOR.
3
4
5
1 2 3 OT OT
C7089U1006
OUTDOOR
SENSOR
50022037-002 OUTDOOR
RESET MODULE
1 2 3 TS TS
50022037-005
DOMESTIC HOT
WATER MODULE
32003971-003
TEMPERATURE
SENSOR
4
ENVIRACOM
TERMINALS
3
5