EMM-3 ELECTRONIC MINIZONE™ PANEL
68-3041-2
8
ZONE 1 CALLS FOR FAN
Zone 1
(green).
Zones 2 and
3 (off).
SYSTEM
(off).
Thermostat G (fan)
System fan is energized.
Zone 1 damper(s) remains open; all others
close.
When a call for cool is made, panel
adjusts dampers and activates
equipment as directed.
When a call for heat is made, fan
stays energized for two minutes
of heat call.
When fan call ends, Idle mode is
entered.
Damper
Zone 1: M4.
Zones 2 and
3: M6.
Panel
G (fan)
DATS TEMPERATURE EXCEEDS 160° (71°C) IN ZONE 1 CALL FOR HEAT
SYSTEM
(flashes red)
Thermostat W (heat)
Thermostat continues to call for heat, but panel
ignores call.
Damper(s) from zone 1 remains open; all others
are closed.
Panel activates system fan for 2-1/2 minutes
and until DATS temperature drops more than
10°F (-12°C).
After 2-1/2 minutes and more than
10°F (-12°C) temperature drop,
the panel returns to Heat mode
(if call still exists), delivering heat
to zone 1 and any other zone
calling for heat. Fan stays on first
two minutes of heat call.
Damper
Zone 1: M4.
Zones 2 and
3: M6.
Panel
G (fan)
DATS TEMPERATURE FALLS BELOW 44°F (6°C) IN ZONE 1 CALL FOR COOL
SYSTEM
(flashes
green)
Thermostat Y (cool)
G (fan)
Thermostat continues to call for cool and fan,
but panel ignores cool call.
Damper(s) from zone 1 remains open; all others
are closed.
Panel activates system fan for 2-1/2 minutes
and until DATS temperature rises more than
10°F (-12°C).
After 2-1/2 minutes and more than
10°F (-12°C) temperature rise,
the panel returns to Cool mode
(if call still exists), delivering
cooling to zone 1 and any other
zone calling for cool.
Damper
Zone 1: M4.
Zones 2 and
3: M6.
Panel
G (fan)
AFTER BOOT BUTTON IS PRESSED
SYSTEM
(orange)
Panel
G (fan)
System enters Purge mode for 2-1/2 minutes.
Dampers to all zones open.
See Purge mode.
Dampers
M4
PURGE OVERRIDE BUTTON IS PRESSED
None
Panel
None
Panel exits Purge mode after approximately
2 seconds.
Panel waits for next call for heat, cool or fan
from zone thermostats.
If no calls exist, panel remains in Idle mode.
Used to troubleshoot the system.
Pressing the button cancels the
Purge mode and makes
troubleshooting the system
quicker and easier.
PANEL RECEIVES SIMULTANEOUS CALLS FOR HEAT AND COOL FROM DIFFERENT ZONES
None
Panel
None
Panel defaults to the last type of call (heat or
cool) to determine which type of conditioning
to choose.
When the first call for conditioning
ends, the panel enters the Purge
mode, then delivers conditioning
to the other zone(s), as required.
WHILE ZONE 1 CALLS FOR HEAT, ZONE 2 CALLS FOR COOL
None
Panel
None
Panel delivers heat into zone 1 until call is
satisfied or for a 20- minute delay, whichever
occurs first.
Panel enters Purge mode.
Panel delivers cool into zone 2 until call is
satisfied, or for a 20-minute delay, whichever
occurs first.
Prevents one zone from never
receiving conditioning because it
is requesting the opposite
device.
Table 4. Trol-A-Temp Electronic MiniZone Panel Sequence Of Operation. (Continued)
LED
Device
Terminals
Energized
System Action
Comments