Honeywell L7224U - L7224 U Multizone System with Circulator Connections

L7224U OIL ELECTRONIC AQUASTAT
®
CONTROLLER
11 69-1720—03
Fig. 10. L7224U multizone system with circulator connections.
M29687
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
ENVIRACOM TERMINALS.
OPTIONAL OUTDOOR RESET MODULE AND OUTDOOR SENSOR SHOWN.
3
4
1 2 3 OT OT
C7089U OUTDOOR
SENSOR
50022037-002 OUTDOOR
RESET MODULE
3
ENVIRACOM
TERMINALS
4