Installation manual

15
ATC32U02 Communicating, Programmable Thermostat - IOM
Rev.: 24 Feb., 2014
Two
connections
on DXM2
board to allow
for multi-unit
installation
Or
9.6 MULT-UNIT DIAGNOSTICS
If multiple units are connected to one thermostat when
Manual Operation, Control Diagnostics, or Dipstick
Confi guration is selected, the service personnel will see a
screen to select a specifi c unit by the last 4 digits of its serial
number.
NOTE: Multiple units may be connected directly to the ATC
thermostat or connected to one another in series, as shown by
the fi gure below.
CONTROL DIAGNOSTICS
TT026 S N - - - - - 1 2 3 4
TT026 S N - - - - - 5 6 7 8
TT038 S N - - - - - 9 0 1 2
PREVIOUS SELECT
TT038 S N - - - - - 0 1 2 3
LAST 5 FAULTS
LT1 LOW WATER TEMP
NO FAULT
NO FAULT
NO FAULT
NO FAULT
NEXT
PREVIOUS SELECT
9.7 MULT-UNIT FAULT INFO
When multiple units are connected to one thermostat,
UNLIKE Mult-Unit Diagnostics, the service personnel views
each units’ fault information by selecting the next option.
10.0 Restore Defaults
The thermostat will reset all settings, excluding the
thermostat confi guration settings (section 2), to their factory
defaults.