Honeywell MiniZone EMM-3 Product Data page 8

EMM-3 ELECTRONIC MINIZONE™ PANEL
Table 4. Trol-A-Temp Electronic MiniZone Panel Sequence Of Operation. (Continued)
LED Device
ZONE 1 CALLS FOR FAN
Zone 1 Thermostat G (fan)
(green).
Damper
Zones 2 and
3 (off).
Panel
SYSTEM
(off).
DATS TEMPERATURE EXCEEDS 160° (71°C) IN ZONE 1 CALL FOR HEAT
SYSTEM Thermostat W (heat)
(flashes red)
Damper
Panel
DATS TEMPERATURE FALLS BELOW 44°F (6°C) IN ZONE 1 CALL FOR COOL
SYSTEM Thermostat Y (cool)
(flashes
green)
Damper
Panel
AFTER BOOT BUTTON IS PRESSED
SYSTEM Panel
(orange)
Dampers
PURGE OVERRIDE BUTTON IS PRESSED
None Panel
PANEL RECEIVES SIMULTANEOUS CALLS FOR HEAT AND COOL FROM DIFFERENT ZONES
None Panel
WHILE ZONE 1 CALLS FOR HEAT, ZONE 2 CALLS FOR COOL
None Panel
68-3041-2
Terminals
Energized
System fan is energized.
Zone 1 damper(s) remains open; all others
Zone 1: M4.
close.
Zones 2 and
3: M6.
G (fan)
Thermostat continues to call for heat, but panel
ignores call.
Zone 1: M4.
Damper(s) from zone 1 remains open; all others
Zones 2 and
are closed.
3: M6.
Panel activates system fan for 2-1/2 minutes
G (fan)
and until DATS temperature drops more than
10°F (-12°C).
Thermostat continues to call for cool and fan,
G (fan) but panel ignores cool call.
Damper(s) from zone 1 remains open; all others
Zone 1: M4.
are closed.
Zones 2 and
Panel activates system fan for 2-1/2 minutes
3: M6.
and until DATS temperature rises more than
G (fan)
10°F (-12°C).
G (fan) System enters Purge mode for 2-1/2 minutes.
Dampers to all zones open.
M4
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.
None Panel defaults to the last type of call (heat or
cool) to determine which type of conditioning
to choose.
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.
System Action
8
Comments
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.
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.
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.
See Purge mode.
Used to troubleshoot the system.
Pressing the button cancels the
Purge mode and makes
troubleshooting the system
quicker and easier.
When the first call for conditioning
ends, the panel enters the Purge
mode, then delivers conditioning
to the other zone(s), as required.
Prevents one zone from never
receiving conditioning because it
is requesting the opposite
device.