Watts Tekmar Zone Valve Control 304V, Installation And Operation Manual

Page: 4 / 12

4 of 12 © 2019 tekmar 304V_D - 10/19
Application 304V–1
Mechanical ---------------------------------------------------------------------------------------------
Electrical -----------------------------------------------------------------------------------------------
B1 = Boiler
PS = System Pump
T1 = WiFi Thermostat 561 or 562
T2 = Thermostat 518 or 519
T3 = Generic Digital Power-Stealing Thermostat
T4 = Generic Bi-Metallic Strip Thermostat
V1 to V4 = 2-Wire Zone Valves
B1
N
PS
304V
V1 V2 V3 V4
DIP Switches
Master
T-stat 1 Priority = Off
Exercising = On
Post Purge = On
Mod Boiler = depends on boiler
System Pump During Priority = On
System Pump With Member Calls = Off
Zone Valve End Switches = Off
Included 510 Ω resistor must
be installed when using power
stealing thermostats
(e.g. Thermostat T3)
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
B1
T1
T2 T3 T4
PS
V1 V2 V3 V4
L N
The Zone Valve Control 304V operates four heating zones. When the thermostat calls for heat, the zone valve opens, the system
pump is turned on and the boiler is fired.
Legend