User Guide

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Design Guide - HZH/HZV Series
HZ Series 60Hz
Engineering Specications – Page 9
DDC Sensors:
Wall mounted DDC sensor to monitor room temperature and interfaces with optional interface system described above.
Several types as described below:
a. Sensor only with no display (LON and MPC).
b. Sensor with override (LON only).
c. Sensor with setpoint adjustment and override (MPC only).
d. Sensor with setpoint adjustment and override, LCD display, status/fault indication (LON and MPC).
Accessory:
Hand Held Communication/Diagnostic Service Tool 7602-444
Allows installation and service personnel to access the conguration and service modes of the DXM2 control board
without installing the 7602-457 communicating thermostat.
Congure the airow, pump, or modulating valve operation etc.
Diagnose by viewing fault history and operating conditions at the time of fault and manually operating the unit.