19
MOUNTING TEMPERATURE SENSORS
The immersion style temperature sensors have a ½” NPT mounting for the 2", 4", and 8" thermowell
probes, and a ½” conduit fitting for electrical connections.
WIRING PRESSURE AND TEMPERATURE SENSORS
1. All wiring must be in accordance with National Electrical Code and local codes, ordinances, and
regulations.
2. Sensor housing provides connection for 1/2” conduit.
3. The pressure and temperature sensors require 2 conductor, 18 gauge, shielded cable. Power lim-
ited, rated for 300V @105C. Use Belden 9318 or equivalent. The shield should be connected to
the earth ground terminal on the base of the PPC4000 Control. The shield should be taped at the
sensor to avoid unintended contact with the sensor housing.
4. All sensor wiring should be in a separate conduit. DO NOT install sensor wiring in any conduit or
junction boxes with high voltage wiring.
5. Maximum wiring distance for sensor wiring is 100 feet.
WARNING: Location of the temperature sensor to monitor boiler water
temperature of a steam boiler is critical. The sensor should be mounted
where it is always exposed to the circulation of the boiler water, not too
close to a hot or cold inlet or steam coil. Consult the boiler manufacturer
for guidance for its location or refer to Bulletin BLZPTS-1 for proper
location and wiring of this temperature sensor.
CAUTION: Disconnect power supply from the PPC4000 Control before con-
necting wires to prevent electrical shock and equipment damage.
TS350/TS752
BLPS
SENS1
SENS2
SENS3
SENS4
SENS5
1+
+EXC
P11.2
P11.2
P11.3
-
-
2-
-COM
P11.10
P11.9
P11.8
-
-
FXIATS-140
1+
-
-
-
P11.3
P11.3
P11.3
2-
-
-
-
P11.8
P11.7
P11.6
BLPS
For 4-20 mA output, use + EXC
and - COM terminals
TS350 / TS752
For 4-20 mA output, use terminals
1 (+) and 2 (-)
FXIATS-140
