IM 812 / Page 4 of 24
CAUTION
!
Control Features
Standard Control
Control Pad – Can remain unit-mounted as shipped, or can
be remote wall mounted. Remote mounting requires an
accessory 20´, 35´ or 50´ low-voltage wire harness, control
pad mounting plate and snap-in decorative cover to replace
the control pad at the unit. The mounting location must be
away from cold drafts, discharge air, outside walls, etc., be-
cause the room temperature sensor is mounted in the control
pad (dip switch #2 of 4 on front of control box must be “ON”).
A wireless hand-held remote controller is also available as an
accessory, which allows control of the conditioner from any-
where in the room.
Heat – Select by pressing the ON/OFF key to “ON” and the
MODE key to “HEAT.” Use the
왕
+
or 왓
-
key to set the desired
room temperature (60-85
O
F).
NOTE: Heat pumps will not operate in reverse cycle un-
less temperature setting is within 2
o
F of room tempera-
ture. Otherwise, unit will heat with electric heaters until
satisfied. The next call for heat will be reverse cycle, pro-
vided the outdoor temperature is above the 30-40
o
F range.
When the outdoor temperature is less than 25
o
F, most of
the heating will be with electric resistance. Between 25
o
F
and 40
o
F, the primary heat will be reverse cycle with occa-
sional resistance heat as required to maintain room tem-
perature. Above 40
o
F, all heating will be by reverse cycle.
Cool – Select by pressing the ON/OFF key to “ON” and the
MODE key to “COOL.” Use the
왕
+
or 왓
-
key to set the desired
room temperature (60-85
O
F).
Fan – Select by pressing the ON/OFF key to “ON” and the
MODE key to “FAN”. Press the FAN key to select high or low
speed. In this mode, only the indoor fan will operate and there
will be no heating or cooling.
Cool/Dry – Press the ON/OFF key to “ON” and the MODE key
to “COOL”. Press and hold the MODE key for 15 seconds to
activate “COOL/DRY”. Use the
왕
+
or 왓
-
key to set the desired
room temperature. Select this mode when the standard Cool
mode does not provide sufficient dehumidification. The com-
pressor and indoor low fan will cycle together and will operate
for longer periods of time to provide up to 70% more dehu-
midification. As a result, the room temperature differential may
increase slightly.
NOTE: COOL/DRY can not be used with SLEEP.
Fan Speed – Select fan speed by pressing the FAN key to
“AUTO”, “HIGH” or “LOW” while the unit is operating in
“HEAT”, or “COOL” mode. “AUTO” gives high fan if unit set-
ting is more than 2
o
F from room temperature and low fan if
less than 2
o
F from room temperature.
Continuous/Cycle Fan – When dip switch #8, located on the
front of the control box, is “OFF”, the indoor fan will operate
continuously. When dip switch #8 is “ON”, the indoor fan will
cycle on and off with the compressor or heater. In cycle fan,
the fan will start every 7 minutes to sample the room tempera-
ture. Fan will turn off again after 2 minutes unless heating or
cooling is required.
Room Freeze Protection
– When dip switch #4 of 4, located
on front of the control box, is “OFF”, a unit mount sensor will
be activated that will bring on the electric heater and indoor
fan as required to maintain a 40
o
-50
o
F minimum temperature.
This will override “OFF”, remote “OFF”, “COOL”, “COOL/DRY”,
“FAN” and “UNOCCUPIED” modes. When dip switch #4 of 4
is “ON”, there is no freeze protection.
Absence of freeze protection can result in equipment and
property damage.
Wired Remote ON/OFF
– The unit may be turned on by open-
ing or off by closing a set of dry contacts located up to 325´
from the unit using a pair of 22 ga. low voltage wires. The 22
ga. wires are connected to the unit using a plug and recep-
tacle connection under the small electrical cover on the front
of the control box. (A plug with 2 short wires is included with
the chassis.) The dry contacts can be a toggle switch at the
front desk, a time clock, etc. When the dry contact is closed,
the unit control goes to memory P1 which is set from the fac-
tory at 75
o
F in COOL mode and high fan. If desired, P1 can be
programmed for a different setting. See instructions under
“Motion Sensor & Door Switch”, page 5. When the dry con-
tact is opened and the unit restarts, the control will automati-
cally index to a Heat setting of 68
o
F (if room temperature is
below 68
o
F) or a Cool setting of 75
o
F if the room temperature
is above 68
o
F.
NOTE: If the unit has been turned OFF by remote dry con-
tacts and the room occupant presses the ON/OFF key on
the control pad, the indicator lights will come on and the
control will start beeping but the unit will not heat or cool.
Temperature Limiting
– The control temperature range as
shipped from the factory is from 60
o
-85
o
F. By using dip switches
#1-#4 of 8 (located on front of the control box), the range can
be changed per the following charts:
Dip Switch Description (front of control box)
Min. Set Point SW #1 SW #2
60
o
F OFF OFF
64
o
FONOFF
68
o
F OFF ON
72
o
FONON
Max. Set Point SW #3 SW #4
75
o
FONON
78
o
F OFF ON
82
o
FONOFF
85
o
F OFF OFF
To Next Page
Loading...
Need help?
General
