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RECHARGEABLE BATTERY BACKUP
M
OUNTING THE
R
A
EMOTE
IR
Install the optional remote air sensor if the display cannot be mounted in a proper location for accurately sensing room
temperature. Installing the remote air sensor overrides the display's built-in sensor. The standard cable length for the remote air
sensor is 7 ft (2.1 m).
1.
Mount the remote air sensor in the return-air stream behind the opening of the return-air grille.
2.
Plug its cable (6-pin connector) into the inside jack #J3 in the upper-left corner of the circuit board.
O
A
UTSIDE
IR
Install the optional outside air temperature sensor to monitor the temperature outside the cabin. Outside air sensor cables are
available in various lengths.
1.
Mount the sensor outside but not in direct sunlight.
2.
Plug its cable into the "OAT" plug #P6.
S
S
ERVICE
ENSOR
Install the optional condenser coil temperature sensor into the "H2O OUT" plug #P5. Use of this sensor must be enabled by
going to DX Operational Setting and then Pump Sentry feature.
W
I
ATER
NLET
When using the AH Mode with a chilled-water air handler, plug the water-inlet sensor cable into the "H2O IN" plug #P4. Attach
the sensor to the chilled-water inlet on the air handler. Ensure that the sensor makes good contact with the copper pipe. DO
NOT attach to rubber hose.
S
EAWATER
Install the optional seawater temperature sensor to monitor the temperature of the seawater feeding the air conditioner. Ensure
that the sensor is in direct contact with the copper pipe and use thermal mastic to ensure good heat transfer. Strap the sensor
wire in place for strain relief and to prevent the sensor from being accidentally removed. Plug the sensor's 2-pin connector into
the "Loop Water Out" (blue) socket located on the circuit board.
H
S
UMIDITY
Install the optional humidity/temperature combo sensor to monitor the relative humidity of the cabin. Locate the sensor in the
same location as the ambient air temperature sensor. Plug the combo sensor's 6-pin connector into the inside temperature
socket located on the edge of the circuit board. The control board automatically detects the presence of this combo sensor and
immediately starts measuring humidity.
RECHARGEABLE BATTERY BACKUP
The Smart Touch comes with a rechargeable battery. The battery recharges whenever the control is powered, similar to a
computer motherboard battery, so there should never be a need to install or replace the backup battery. When the Smart Touch
is plugged into a control that is powered up, the battery is not being drained. Only when the AC power to the control board is
powered off is the battery being drained in the Smart Touch itself. The battery backup will last over two years of "powered-off
time" or inactivity.
When the battery drains due to inactivity, the only information that is lost is the date and time. No other information is lost. Also,
the screen lock PIN will be reset to its default ("1234") when the battery gets drained. All other programming parameters,
calibrations, program scheduler settings, etc., are retained in flash memory forever and do not use the battery power at all.
When the battery drains, there will be no visible indication on the display during normal power up. What will happen is that upon
a subsequent (AC) power down and power up, the user will immediately be prompted to set the date/time setting. This is their
indication that the battery got drained due to inactivity.
6
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S
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Smart Touch Cabin Control Installation & Operations Manual
ENSOR
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L-3380 ENGLISH
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