ECR International AT Serie Manuel D'installation, D'utilisation Et D'entretien page 25

Figure 14 - Three Zones Control Valves
Figure 15 - Three Zones with Circulators
ADDITIONAL WIRING DIAGRAMS
THREE ZONES WITH CONTROL VALVES
ZONE 1 ZONE 2
T T T T
ZONE 1 ZONE 2
ARGO
THERMOSTATS
AZ-3
END
SWITCH
ZONE 1 ZONE 2
X X
ZONE ZONE
VALVE VALVE
"AT" BOILER
R(T)
TT
W(T)
TT
C1 C2
CIR.
THREE ZONES WITH CIRCULATORS
ZONE 1 ZONE 2
TR TW TR TW
THERMOSTATS
ARGO
ARM-3P
ISOLATED
SWITCH ZONE 1 ZONE 2
X X L N L N
CIR. CIR.
CIRCULATOR PUMPS
(120 VAC)
"AT" BOILER
R(T)
TT
W(T)
TT
C1 C2
CIR.
25
ZONE 3
THERMOSTAT
SPST (2 WIRE)
T T
ZONE 3
ZONE 3
ZONE
VALVE
PRIMARY
CIRCULATOR
PUMP 120 VAC
(1/6 hp MAX)
ZONE 3
THERMOSTAT
SPST (2 WIRE)
TR TW
ZONE 3 120 VAC
L N L N
120 VAC
CIR.
PRIMARY
CIRCULATOR
PUMP 120 VAC
(1/6 hp MAX)
PN 240013676 REV. A [07/01/2022]