Unit installation

IOMM ACZ/AGZ-3 ACZ / AGZ-BM 115
After pressing the “VIEW” menu key, a menu screen will show:
VIEW < UNIT
< COMPRESSOR
< REFRIGRANT
< FANS
Selection of any of these will advance to the appropriate data menu. For example, after pressing the
“REFRIGERANT” menu button, the selected data screen will show:
VIEW REFRIG
PSI °
°°
°F
SAT EVAP XXX.X XX.X
SAT COND XXX.X XX.X
The ARROW keys will automatically return to the “scroll” mode at this time.
Screen Definitions
This section contains information on each menu screen. The menu screens are in order of the matrix
in Figure 35, going from left to right and then down when there are sub-menus. Many menus are
self-explanatory.
VIEW MENUS
View Unit Status
VIEW UNIT STATUS (1)
Off:Unit Switch
Stage=X Request=X
Evap Fan=Off
Unit states can be OFF, AUTO, and ALARM as determined by the authority Switch, Remote, Etc.
Stage is the number of compressor stages on.
Request is the number of cooling stages called for via digital inputs from the remote thermostat.
Evap Fan can be ON or OFF and is the state of the evaporator fan (or pump) as called for by the
controller (not necessarily whether the fan/pump is actually on). If the unit is enabled and at least
one circuit is able to run, the controller sends a signal to start the evaporator fan/pump (terminals
#33 and #35 on TB1). If air or water flow is sensed from a flow switch (terminals #44 and #61 on
TB1) for at least 10 seconds, the unit will start at a call for cooling. On DX air handlers, this output
and input do not have to be used, in which case a jumper is required across terminals #44 and #61.
VIEW UNIT STATUS (2)
Demand Limit= Stg X
Network Limit=Stg X
VIEW UNIT STATUS (3)
Stg Up Delay=XXXXsec
Stg Dn Delay=XXXXsec
UP ARROW KEY 