Intertek FT Series - Page 47

The FT Series Floor Standing, Heating Only Boiler
Page 47
Wiring with zone valves and indirect DHW tank pump
1. Taco ZVC 404 used for illustrative purposes; other, similar zone valve control panels can be used. The control panel
does not require Hot Water Priority and it should be switched o󰀨 on the ZVC 404 because it is provided by the FTHF
boiler control.
2. Connect the end switch of the zone valve panel back to the T/T terminals on the FTHF boiler.
3. Connect the system pump for the zone valves to the System Pump terminals.
4. Connect the DHW pump for the Indirect Tank to the DHW Pump terminals.
5. Connect the outdoor sensor (OS) to the OS terminals for outdoor reset operation.
6. Do NOT bring 24 V back to the T/T terminals. Only a dry contact switch is permitted.
7. The tank aquastat or DHW sensor connects back to the DHW sensor terminals. Use parameter 39 in Section 5.7
to dene aquastat or DHW sensor setting to the boiler.
POWER IN
T T
ZONE 1
T T
ZONE 2
T T
ZONE 3
T T
ZONE 4
OFF
ON
END
SW.
MODE
FOUR ZONE ZONE VALVE CONTROL
WITH OPTIONAL PRIORITY
NORMAL RESET
THERMOSTAT THERMOSTAT
ZONE 1
1 2 34 1
ZONE 4 PRIORITY
2
ZVC 404
34
ZONE 2
1 2 34
ZONE 3
12
THERMOSTAT
34
ZONE 4
JUMPER
3&4
2 WIRE ZONE VALVE
(NO END SWITCH)
3 WIRE ZONE VALVE
(POWER OPEN
4 WIRE ZONE VALVE
SELF CLOSING)
1
2
3
MOTOR END
SW.
FUSE (3 AMP MAX)
24 VAC
INPUT
DRY
CONTACTS
N/0 C N/C
12 AMPS.
LNG NGLNGL/ZC
Line Voltage Terminals
T/T
AC24V
OUTPUT
MAIN POWER
Low Voltage Terminals Low Voltage Terminals
O/S
R 0-10V W
(+)INPUT (-)
L-T/T
(14 Gauge Wire)
DHW
Pump
(14 Gauge Wire)
SYSTEM PUMP
DHW PUMP
(14 Gauge Wire)
System
Pump
Low Water
Cutoff
(18 Gauge Wire)
Outdoor
Sensor
I
(Factory Jumper Installed)
LWC
O
120 VAC
LESS THAN
*
*
DRY CONTACTS ONLY
POWER TO 24V
TRANSFORMER
(14 Gauge Wire)
Sensor or
DHW Temp
Aquastst
(18 Gauge Wire)
*
TEMP
DHW
SENSOR
POWER