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Smart Touch Cabin Control Installation & Operations Manual
INTRODUCTION
The Smart Touch Control is a microcontroller-based unit designed for use with direct expansion (DX), reverse-cycle air
conditioning systems.
R
T
M
EAD
HIS
ANUAL
Read this manual completely before you proceed with the installation and operation of the Smart Touch. If you have questions
or require assistance with your Smart Touch control, contact the Dometic Marine Service Department at +1 954-973-2477.
The Smart Touch is covered under existing Dometic Owner's Limited Warranty Policy. Incorrect installation, neglect and system
abuse are not covered under the Dometic warranty policy.
F
EATURES
S
TANDARD
•
User-friendly touchscreen display
requires no manual for basic operation.
•
5-volt logic and microcontroller located
in the display.
•
Automatic and three programmable
manual fan speeds.
•
22 programmable parameters for
custom installations.
•
Moisture Mode for controlling relative
humidity.
•
De-icing cycle to prevent evaporator coil
icing.
•
Dehumidification control.
O
PTIONAL
•
Outside air temperature sensor.
•
Alternate air temperature sensor.
•
Pump Sentry water sensor.
•
Electric heating control capabilities.
•
Seawater inlet temperature sensor.
This manual provides all necessary information for proper installation and operation of the Smart Touch Display. Poor
installation and misunderstood operating parameters will result in unsatisfactory performance and possible failure.
H
I
W
OW
T
ORKS
The basic principle behind an air conditioner is the movement of heat. In a marine DX air conditioner, heat is removed from the
inside cabin air and transferred to the seawater. In reverse-cycle heating, the refrigerant flow is reversed and heat is extracted
from the seawater and discharged into the living space. The efficiency of the system operation depends on both seawater and
cabin temperatures.
T
I
HE
MPORTANCE OF
In Cool Mode, the air conditioner will operate most efficiently in seawater temperatures below 90°F (32°C). At higher seawater
temperatures the unit will operate, but at a reduced capacity. A high-pressure shutdown may occur at higher seawater
temperatures.
In Heat Mode, the opposite is true. As the seawater gets colder, there is less heat available, and the heating efficiency is
reduced. Full heating capacity is obtained at approximately 55°F (13°C) seawater temperature. Performance drops to about
50% of rated capacity in 40°F (4.4°C) water. Below this, the system pressure can be so low that the unit will shut down on a low-
pressure fault. This problem is compounded when the cabin is also cold. See "Digital Controls Troubleshooting" on page 34.
L-3380 ENGLISH
B
P
EFORE
ROCEEDING
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S
T
EAWATER
EMPERATURE
Dehumidification control. Programmable compressor
staging delays.
Universal 220/115-230 volt, 50/60 Hz AC power
supply.
Nonvolatile memory retains settings without
batteries.
Programmable display-brightness control.
Programmable failsafe modes.
Fits Vimar® Eikon and Eikon EVO switch bezels.
Auxiliary heating control capabilities.
Humidity sensor for advanced humidity control.
CAN-bus network capability.
Air Filter Cleaning or Replacement Timer.
Low-Voltage Monitor.
INTRODUCTION
1
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