Dometic Smart Touch Montage- Und Bedienungsanleitung Seite 5

5.3.4 Pump sentry water sensor – DX only
Install this optional DX sensor to check the condenser coil temperature.
1. Mount the sensor at the condenser coil outlet and install insulation around it.
2. Plug the sensor into the H2O OUT plug #P5.
5.3.5 Seawater low-limit temperature sensor – DX only
Install this optional DX sensor to check the temperature of the seawater feeding the air
conditioner.
1. Mount the sensor in direct contact with the copper pipe, using thermal mastic to
ensure a good heat transfer.
2. Strap the sensor wire in place for strain relief and to prevent the sensor from being
accidentally removed.
3. Plug the sensor's 2-pin connector into the loop water out (blue) socket located on
the circuit board.
5.3.6 Water inlet temperature sensor – CW only
Install this optional CW sensor to check the water temperature.
When using the AH Mode with a CW air handler.
1. Ensure the sensor has good contact with the copper pipe.
2. Attach the sensor to the chilled-water inlet on the air handler.
3. Plug the water inlet sensor cable into the H2O IN plug # P4.
NOTE Do not attach to a rubber hose.
6 Operation
This section describes the operating features.
1. Use the main menu settings to adjust the operating parameters and to fine-tune the
system for the most efficient operation.
Variables such as ducting, sensor location, and system layout affect the system op-
eration.
The control has factory default settings stored in permanent memory that can be re-
called.
2. The control has factory default settings stored in permanent memory that can be re-
called. To return to the default settings, select main menu > control para-
meters > recall defaults.
3. Reprogrammed, new settings can be saved as memorized settings, and then re-
called and saved at any time. To use the reprogrammed settings, select main
menu > control parameters > memorize settings > recall mem-
orized.
See section in full manual "Understanding the Memory
tion.
6.1 Understanding the operating cycles
This section describes how the system responds during normal heating and cooling
cycles.
Automatic mode
Heating and cooling are supplied as required.
A cooling cycle will start when the cabin temperature exceeds the set point by 2 °F (1
°C) and will continue to
cool until the temperature equals the set point. See the section in full manual set point
temperature differential for instructions on how to reduce this variation to 1 °F (1 °C).
To switch from cooling to heating, the cabin temperature must drop below the set point
by at least 4 °F (2 °C). Similarly, if heating is required, a heating cycle will start when the
cabin temperature is below the set point by 2 °F (1 °C) and will continue to heat until the
temperature equals the set point.
The cabin temperature must exceed the set point by at least 4 °F (2 °C) to switch from
heating to cooling.
Cool or heat mode
Heating and cooling are supplied as selected.
• By selecting cool mode, only cooling is supplied.
• By selecting heat mode, only heating is supplied.
The cabin temperature in either mode is maintained within 2 °F (1 °C) of the set point by
default.
When the heating or cooling set point is satisfied, the compressor cycles off and the fan
returns to low speed.
The fan speed remains constant if manual fan speed is selected. For more information on
this feature, see
CW systems
This section applies to CW systems only.
When cooling or heating is required, the water valve will not open unless the water tem-
perature is adequate.
1.
Reversing valve
This section applies to DX systems only.
The position of the reversing valve determines if the system is in cool mode or heat
mode. In addition, the reversing valve is programmed to toggle in these situations:
• When the system is running and heating or cooling is required, the reversing valve
• When a cooling or heating cycle is called for and if the system has been off for less
• When a cycle is interrupted from the display panel by pressing the power icon or
Unnecessary valve toggling is limited to reduce reversing valve noise. To completely
end valve toggling, program the minimum compressor staging delay to five minutes or
greater. See section in full manual
information on setting the compressor start delay. Power-on reset, which occurs when
Settings" for more informa-
the system is powered up, always initiates a valve toggle.
6.2
This section describes the available operating modes.
Off
All control outputs are turned off. All settings are saved in nonvolatile memory.
On
Power is supplied to the appropriate outputs and the display indicates the current state
of operation. The operating and program parameters resume based on those last stored
when the unit was operating.
Automatic
The system provides heating and cooling as required. The automatic mode icon dis-
plays the cabin temperature in a given mode and is maintained within 2 °F (1°C) of the
set point by default. See the section
"Understanding the Operating Modes.
View the water temperature by pressing the temperature indicator icon until the wa-
ter temperature is displayed.
The fan remains in low speed until an adequate water temperature is available. Heat
will be supplied when no heating is available (water temperature is inadequate) on-
ly if the optional electric heater is installed and programmed.
An adequate cooling or heating water temperature is defined by the water temper-
ature differential setting, under CW control parameters. The factory default is set at
a 15 °F (8 °C) differential from the ambient air temperature.
toggles to the opposite mode to reduce the starting surge of the compressor.
than five minutes.
changing the set point.
Understanding the DX Operational Settings
Understanding the operating modes
set point temperature differential
EN
for more
for instructions on
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