Watts Tekmar Zone Valve Control 303V Series, Installation Manual

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N
Application 303V-1
Mechanical
Electrical
The Zone Valve Control 303V operates three heating zones. When the thermostat calls for heat, the zone valve opens,
the system pump is turned on and the boiler is fired.
Legend
B1 = Boiler
PS = System Pump
T1 = WiFi Thermostat 561, 562 or 563
T2 = Thermostat 518 or 519
T3 = Generic Digital Power-Stealing Thermostat
V1 to V3 = 2-Wire Zone Valves
B1
PS
303V
V1 V2 V3
Away
C R Rh W
Away
C R Rh 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
B1
T1
T2 T3
PS
V1 V2 V3
L N
DIP Switches
Master
T-stat 1 Priority Off
Exercising On
Post Purge On
Mod Boiler - not applicable
System Pump During Priority On
System Pump With Member Calls Off
Zone Valve End Switches Off
I n c l u d e d 510 Ω
resistor must be
i n s t a l l e d w h e n
u s i n g p o w e r
stealing thermostats
(e.g. Thermostat T3)