L7224U Multizone System With Circulator Connections - Honeywell L7224U Installation Instructions Manual

TO ADDITIONAL R845A
RELAYS FOR OTHER ZONES
1
L1
(HOT) L2
ZONE 2
LOW VOLTAGE
THERMOSTAT
L7248L
SENSOR
ZR
L1
LINE
VOLTAGE
L2
CIRCULATOR
C2
B2
LINE
C1
VOLTAGE
OIL BURNER
B1
RELAY
ZC
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
ENVIRACOM TERMINALS.
4
OPTIONAL OUTDOOR RESET MODULE AND OUTDOOR SENSOR SHOWN.
Fig. 10. L7224U multizone system with circulator connections.
L7224U OIL ELECTRONIC AQUASTAT
ZONE 2
CIRCULATOR
R845A RELAY ZONE 2
6
5
3
4
1
2
LOW VOLTAGE
THERMOSTAT
2
T
T 3
2
1
11
ENVIRACOM
3
TERMINALS
50022037-002 OUTDOOR
RESET MODULE
1 2 3 OT OT
4
C7089U OUTDOOR
SENSOR
M29687
®
CONTROLLER
69-1720—03