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Product Instructions
Basic Digital Setpoint Control II
PI-PR-17023 05/08
2 of 5
Installation
Digital Setpoint Control II
with watertight sensor (17029)
Watertight Sensor (17031)
For proper control, the sensor for
the setpoint control must be located
within the heating and or cooling slab.
The sensor should be placed midway
between rows of tubing, and should be
placed in conduit which is cast into the
slab, so that replacement is possible.
SENSOR B
SENSOR A
SENSOR B
24VAC
SUPPLY
120V, 240V
SUPPLY
RELAY 1
RELAY 2
Wiring
Digital Input
LOAD 2
LOAD 1
Sensor A is triggering the two relays,
Relay 1 being boiler circulator pump,
and Relay 2 being system circulator
pump. In heating mode, when the
sensor detects temperature lower than
the selected setpoint minus the selected
differential both relays will be energized.
When the temperature reaches the
setpoint the relays will de-energize.
Note:
If using 24V to power the controller, the
24V supply must be connected to
terminals that are , C on the
left side of the control.
If using 120 or 240V to power the
controller the 120 or 240V supply must
be connect to corresponding terminals
clearly marked on the right side of the
control.
When connecting the sensor connect
both red wires to one terminal and the
white wire to the other terminal.
Terminals for sensor marked "T".
120 V
COM
