Application 304V-1 - Watts Tekmar Zone Valve Control 304V Installation And Operation Manual

Application 304V–1
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.
Mechanical - - - - - - -- - - ------- ---------- ----------- ------ --------------------- ----------------------------
Legend
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
Electrical - - - - - - - - -- - - ------- ---------- ----------- ----- ---------------------- ----------------------------
B1
© 2019 tekmar 304V _ D - 10/19
B1
T1
T2
C R Rh W C R Rh W
Away Away
+
A A
-
X X DHW C R W C R W
tN4 tN4
MOD BOILER T-STAT 1 T-STAT 2
T1
POWER ROOM
RESPONSE
PRIORITY SYS PUMP
FUSE 2 FUSE 1
120 VAC SYSTEM PRIORITY
POWER PUMP PUMP 1
L N L N L N
MOTOR
L N PS
V1
304V
N
V1
PS
T3 T4
R W R W
A A C R W A
C R W C
tN4 tN4 tN4
T-STAT 3 T-STAT 4 T-STAT 5
T2 T3 T4
ZONE 1 ZONE 2 ZONE 3
END END END
MOTOR MOTOR MOTOR
SWITCH SWITCH SWITCH
V2 V3 V4
4 of 12
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
A A
R W C R W B C D E
tN4 tN4
T-STAT 6 EXPANSION
T5 T6
MASTER MEMBER
T-STAT 1 PRIORITY : ON OFF
EXERCISING : ON
OFF
POST PURGE : ON
OFF
MOD BOILER : 0-10V
4-20 mA
SYSTEM PUMP DURING PRIORITY: ON
OFF
SYSTEM PUMP WITH MEMBER CALL: ON
OFF
ZONE VALVE END SWITCHES: ON OFF
RESERVED
70 80
60 90
50 100
MOD MAX %
ZONE 4 ZONE 5 ZONE 6
END END END
MOTOR MOTOR
SWITCH SWITCH SWITCH
Included 510 Ω resistor must
be installed when using power
stealing thermostats
(e.g. Thermostat T3)