28
SENDCOM DESCRIPTION
DESCRIPTION
The Zonex Systems
SENDCOM
is a microprocessor based, communicating air duct temperature sensor. The
SENDCOM
is used to display the
discharge air and return air temperature of a single HVAC unit. The temperatures are displayed within the
ZonexCommander
software on the
REVIEW page. Double Click on
Current Room Temp
where a
SENDCOM
is attached to display duct temperatures.
SENDCOM Communicating Duct Temperature Sensor – Part # SENDCOM
SENDCOM
1. The
SENDCOM
communicates both supply and return temperatures,
and is mounted directly to the supply trunk or plenum of the HVAC unit.
2. The
SENDCOM
must be mounted in a dry, protected atmosphere not
subject to the elements.
3. Locate the position of the
SENDCOM
enclosure with the attached
supply air sensor, on to the supply duct or plenum.
4. Drill a 1/4” hole for the sensor and attach the
SENDCOM
assembly
so that the sensor fits through the 1/4” hole.
5. Attach the
SENDCOM
assembly to the duct or plenum with the sheet
metal screws provided.
6. Locate the position in the return duct or plenum for the return
sensor and drill a 1/4” hole.
sheet metal screws, and extend the sensor wire to the
SENDCOM
8. Connect the shield conductor of the return air sensor lead wire to –
on the RA terminal block.
9. Connect 24 volts using 18 AWG wire minimum, to the “R” and “C”
terminals of the
SENDCOM
. Power can be taken from the HVAC unit
10. Connect the communication wire to RX and TX. The communication
wire must be separate from any 24-volt or higher wiring.
NOTE: After setting the address switches, cycle power to the
SENDCOM
to set the address.
TERMINAL FUNCTIONS
7. Install the sensor assembly labeled LAT SENSOR with the provided
RA terminal block.
control transformer.
alone thermostat. Determine the thermostat address to which
11. Each
SENDCOM
must be addressed to the corresponding stand
the
SENDCOM
is applied and add 70 to that address. Press and hold
the
ADR
button, and then press the
UP
or
DN
button to raise or
lower the displayed address number (see Page 29).
