Intertek FT Series - Page 45

The FT Series Floor Standing, Heating Only Boiler
Page 45
120 VAC
12 AMPS.
L
NG NGLNGL/ZC
L
ine Voltage Terminals
A
C24V
OUTPUT
T
/T
N
OT USED
(CASCADE
SENSOR)
DHW
TEMP
SENSOR
M
AIN POWER
L
ow Voltage Terminals
L
ESS THAN
L
ow Voltage Terminals
O
/S
R 0-10V W
(+) INPUT (-)
H
/S
S
YSTEM PUMP
DHW PUMP
L
WC
(
14 Gauge Wire)
(14 Gauge Wire)
System
Pump
(Factory Jumper Installed)
Low Water
Cutoff
(18 Gauge Wire) (18 Gauge Wire)
DHW
Pump
DHW
Temperature
Sensor
(18 Gauge Wire)
Thermostat or
Endswitch
Outdoor
Sensor
(14 Gauge Wire)
I
O
POWER TO 24V
TRANSFORMER
(14 Gauge Wire)
NEW WIRING, SINGLE ZONE HEATING WITH INDIRECT TANK
Wiring, Single Zone Heating with Indirect DHW Tank
1
. Do not bring 24 V to any terminals on the FTHF boiler.
The room thermostat (dry contacts only) connects back
to the T/T terminals.
2
. The Indirect Tank temp sensor connects to the DHW
TEMP SENSOR terminals. Connect the system pump
and DHW pump as shown above.
3.
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.
4
. Connect the outdoor sensor (OS) for outdoor reset
operation to the O/S terminals.
Note:
This space is intentionally left blank.