© 2019 tekmar 306V_D - 10/19
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Application 306V–2
Mechanical
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Electrical
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A1 = DHW Tank Aquastat
B1 = Modulating Condensing Boiler
BP = Boiler Pump
PS = System Pump
P1 = Zone 1 DHW Tank Pump
T1 = WiFi Thermostat 561 or 562
DIP Switches
Master
T-stat 1 Priority = On
Exercising = On
Post Purge = On
Mod Boiler = depends on boiler
System Pump During Priority = Off
System Pump With Member Calls = Off
Zone Valve End Switches = On
End switch jumper required for Zone 1
when using a pump and Zone Valve End
Switch DIP = On
Included 510 Ω resistor must
be installed when using
power stealing thermostats
(e.g. Thermostat T4)
Away
C R Rh W
Away
C R Rh W
Away
C R Rh W
R W
R W
MOD
X X
tN4
T1
T2
T3
T4
T5
T6
A
DHW
C R W
BOILER
T-STAT 1
T-STAT 2
T-STAT 3
-
+
tN4
A C R W
tN4
A C R W
T-STAT 4
tN4
A C R W
T-STAT 5
tN4
A C R W
T-STAT 6
EXPANSION
tN4
A C R W
tN4
A B C D E
FUSE 2 FUSE 1
END
SWITCH
MOTOR
POWER
PRIORITY
SYS PUMP
ROOM
RESPONSE
ZONE 1
70 80
90
60
50
100
MOD MAX %
END
SWITCH
MOTOR
ZONE 2
END
SWITCH
MOTOR
ZONE 3
END
SWITCH
MOTOR
ZONE 4
END
SWITCH
MOTOR
ZONE 5
END
SWITCH
MOTOR
ZONE 6
MASTER
MEMBER
OFF
OFF
OFF
T-STAT 1 PRIORITY : ON
EXERCISING : ON
POST PURGE : ON
MOD BOILER : 0-10V
SYSTEM PUMP DURING PRIORITY: ON
SYSTEM PUMP WITH MEMBER CALL: ON
ZONE VALVE END SWITCHES: ON
RESERVED
120 VAC
POWER
PUMP
PUMP 1
SYSTEM
PRIORITY
L
N
L
N
L
N
OFF
OFF
OFF
4-20 mA
1 2 3
1 2 3
+
T-T
DHW
-
B1
A1
T1
P1
L N
PS
V1
V2
V3
V4
V5
T2
T3
T4
T5
L
N
Power
L
N
System
Pump
L
N
B1
PS
P1
V1
V2
V3
V4
V5
A1
BP
306V
The Zone Valve Control 306V operates a five heating zones and a domestic hot water tank. When a thermostat calls for heat,
the zone valve opens and the system pump and the boiler turn on once the zone valve end switch closes. The domestic hot
water tank is heated using a pump. When priority is selected, the heating zones are shut off while the hot water tank is heated.
T2 to T3 = Thermostat 518 or 519
T4 = Generic Digital Power-Stealing Thermostat
T5 = Generic Bi-Metallic Strip Thermostat
V1 = 2-Wire Zone Valve
V2, V3 = 3-Wire Zone Valves (e.g. Taco 570)
V4, V5 = 4-Wire Zone Valves
Legend
