Dometic 3314081.XXX User manual

USA
SERVICE OFFICE
Dometic, LLC
2320 Industrial Parkway
Elkhart, IN 46516
574-294-2511
CANADA
Dometic, LLC
46 Zatonski, Unit 3
Brantford, ON N3T 5L8
CANADA
519-720-9578
For Service Center
Assistance Call:
800-544-4881
COMFORTCONTROLCENTER2THERMOSTAT
OPERATING INSTRUCTIONS
REVISION
Form No. 3314149.018 10/11
(Replaces 3314149.000)
(French 3314169.016)
©2011 Dometic, LLC
LaGrange, IN 46761
PROGRAMMABLE THERMOSTAT
MODEL
3314081.XXX WITH DEHUMIDIFY
3314080.XXX WITH OUT DEHUMIDIFY

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TABLE OF CONTENTS
INTRODUCTION........................................................................................................................................... 2
DOCUMENT SYMBOLS ............................................................................................................................... 3
ABOUT YOUR NEW THERMOSTAT ............................................................................................................ 3
A. Features .................................................................................................................................... 3
B. System Configuration & Initialization ......................................................................................... 3
C. Quick Reference To Control Buttons .........................................................................................5
D. Quick Reference To LCD Icons .................................................................................................5
PROGRAMMING & OPERATIONS............................................................................................................... 6
A. ON/OFF ..................................................................................................................................... 6
B. Clock Setting ............................................................................................................................. 6
C. Temperature Format °F / °C ...................................................................................................... 7
D. Inside Temperature.................................................................................................................... 7
E. Zone Selection........................................................................................................................... 8
F. Mode Selection.......................................................................................................................... 8
G. Fan Speed ................................................................................................................................. 9
H. Temperature Set-Point............................................................................................................... 9
I. Dehumidify Setting (Select Models) ........................................................................................10
MODE DESCRIPTION ................................................................................................................................ 10
A. “OFF” - Off Mode ..................................................................................................................... 10
B. “COOL” - Cool Mode ............................................................................................................... 10
C. “HP” - Heat Pump Mode .......................................................................................................... 11
D. “HS” - Heat Strip Mode ............................................................................................................ 11
E. “FAN” - Fan Mode.................................................................................................................... 12
F. “FURN” / “AQUA” - Furnace Or Aqua (Hydronic) Heating Mode ............................................. 12
G. “AUTO” - Auto Change Over Mode .........................................................................................12
SPECIAL FEATURES.................................................................................................................................. 13
A. Auto Fan .................................................................................................................................. 13
B. Zone Control............................................................................................................................ 13
C. Dehumidify (Select Models)..................................................................................................... 13
D. Program “1” & “2”..................................................................................................................... 14
E. Examples Of Times Programmed............................................................................................ 16
F. CANbus Interface .................................................................................................................... 16
G. Auxiliary Heat (Heat Pump Models Only) ................................................................................ 17
H. Stage Select - Two Air Conditioner/Heat Pump Units (Select Models) On One Zone............. 17
I. Stage Select - Dual Compressor Air Conditioner/Heat Pump (Select Models) .......................17
J. Auto Generator Start (AGS) .................................................................................................... 18
K. Load Shed .............................................................................................................................. 18
L. Defrost Cycle (Heat Pump Models Only)................................................................................. 18
M. Compressor Time Delay .......................................................................................................... 18
N. Power Interruption ................................................................................................................... 19
O. LCD Error Code.......................................................................................................................19
INTRODUCTION
Congratulations! Your recreational vehicle manufacturer has equipped your RV with
the most advanced RV thermostat. Your Dometic Comfort Control Center 2 thermostat
(hereinafter referred to as the CCC 2 thermostat) has been designed for ease of opera-
tion and for many years of reliable service.
Dometic, LLC reserves the right to modify appearances and specifications without notice.

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SYSTEM RESET PROCEDURE ................................................................................................................. 20
GENERAL INFORMATION.......................................................................................................................... 20
A. Reduce Heat Gain ................................................................................................................... 20
B. Disclaimer................................................................................................................................ 20
MAINTENANCE .......................................................................................................................................... 21
A. Air Filter ................................................................................................................................... 21
B. Dometic CCC 2 Thermostat ....................................................................................................21
SERVICE..................................................................................................................................................... 21
TABLE OF CONTENTS
DOCUMENT SYMBOLS
Indicates additional information that is not related to personal injury.
Indicates step-by-step instructions.
ABOUT YOUR NEW THERMOSTAT
A. Features
●Liquid Crystal Display
●Two operation programs
●Constant time of day display
●Remote Sensor (Precise comfort control within 1 °F of set-point)
●Display reminder lets you know when to service or replace filters
●Up to four independent zones
To help familiarize yourself with the operation of the CCC 2 thermostat, review the
following diagrams and accompanying text that explain the functional characteris-
tics of this system.
Your CCC 2 thermostat is equipped with a liquid crystal display (LCD) that identifies
the mode of operation (OFF, Cool, Heat Pump, Fan, Heat Strip, Auto, & Furnace
or Aqua), temperature set-point, zone identification (“1”, “2”, “3”, “4”), fan speed
(“Auto,” “Low,” “Med,” “High”), program “1” and “2”, inside temperature, clock,
°F / °C, compressor delay, filter maintenance, and dehumidify operation with humid-
ity set point. The modes of operation viewed in the LCD will vary depending on the
system installed in your RV.
B. System Configuration & Initialization
The installer of your system will set the required system DIP switches to the ON
position. In order for the CCC 2 thermostat to recognize the system zones, type of
units installed and their options, a system reset must be done.

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Once the system is completely installed, do a system reset:
1. Make sure the CCC 2 thermostat is in the OFF mode. See section, “C. Quick
Reference To Control Buttons” on page (5).
2. Simultaneously press and hold the MODE and ZONE buttons. See section, “C.
Quick Reference To Control Buttons” on page (5).
3. The LCD will display “IniT” and all available zones.
4. Release the MODE and ZONE buttons.
5. Press the ON/OFF button to exit system set up.
6. The furnace ON/OFF temperature differential should be set at this time. For
further information on furnace mode differential setting, see section, “F. “FURN”
/ “AQUA” - Furnace Or Aqua (Hydronic) Heating Mode” on page (12).
Any time a system reset occurs, the factory default settings are restored. See table,
“Factory Preset Settings” on page (4).
In the unlikely event of CCC 2 system memory loss or dip switch setting change, the
CCC 2 thermostat will require a system reset. For system reset procedure, see main
heading, “System Reset Procedure” on page (20).
Your Dometic CCC 2 thermostat has been pre-programmed. Review settings below
and adjust the settings to your personal comfort level.
Any time the CCC 2 is in an idle stage (not illuminated) you will need to wake it
up by pressing any button on the CCC 2 before it will recognize a new setting
attempt.
Factory Preset Settings Factory Preset Settings Each Zone
All Zones Program “1”
Function Setting Function Setting
Time of Day (Clock) — — — Heating 68 °F / 20 °C
Each Zone Cooling 72 °F / 22 °C
Relative Humidity 50% Automatic 70 °F / 21 °C
Heating 68 °F / 20 °C Fan Speed Auto
Cooling 72 °F / 22 °C Mode Off
Automatic 70 °F / 21 °C Time 8:00 AM
Fan Speed Auto Program “2”
Mode Off Heating 68 °F / 20 °C
Humidity (select models) Off Cooling 72 °F / 22 °C
Automatic 70 °F / 21 °C
Fan Speed Auto
Mode Off
Time 10:00 PM
ABOUT YOUR NEW THERMOSTAT
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MAINTENANCE
A. Air Filter
NOTICE. Periodic cleaning or replacement of the air conditioner/heat pump air fil-
ters is required. NEVER run the air conditioner without the air filter in place. This
may plug the unit evaporator coil with dirt and may substantially degrade the perfor-
mance of the unit over time.
When a system fan run time exceeds 1000 hours the filter icon is displayed in the
LCD. (See section, “D. Quick Reference To LCD Icons” on page (5).) When this
occurs wash the filter with soap and warm water. Let dry and reinstall.
To reset the fan run time and clear the filter icon, hold the INSIDE TEMP and
°F / °C buttons for 3 seconds. This will clear the fan run time for the current zone
selected.
B. Dometic CCC 2 Thermostat
NOTICE. DO NOT spray water directly on the CCC 2 thermostat. DO NOT use
solvents for cleaning.
Clean the CCC 2 thermostat with a moist soft cloth.
SERVICE
In the unlikely event the unit fails to operate or operates improperly, check the fol-
lowing before calling your service center.
●If your RV is connected to a motor generator, check to be sure the motor genera-
tor is running and producing power.
●If the RV is connected to a power supply by a land line, check to be sure the line is
sized properly to run air conditioner load and it is plugged into the power supply.
●Check your 120 Vac fuse or circuit breaker to see if it is open. Insure fuse is not
burnt, or circuit breaker is ”ON” and not activated.
●Check your 12 Vdc fuse or circuit breaker to see if it is open.
●After the above checks, call your local service center for further help. This unit
must be serviced by qualified service personnel only.
When calling for service, always give the following:
●Unit Model Number and Serial Number found on Identification Label located on
the Base Pan of unit bottom. It is necessary to remove the return air cover to
expose the rating plate.
●Electronic Control Kit Part Number and Serial Number found on Identification
Label located on the side of the Kit. This kit is mounted in the return air cavity and
can be exposed by removing the return air cover.

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SYSTEM RESET PROCEDURE
When your unit was installed the appropriate dip switches on the electronic control
board were turned ON to match your system configuration. Any time these settings
are changed, a system reset will need to be done before the CCC 2 thermostat will
recognize the updated selection.
To do a system reset:
1. Make sure the CCC 2 thermostat is in the OFF mode.
2. Simultaneously press the MODE and ZONE buttons. The LCD will display “IniT”
and all available zones.
3. Release the MODE and ZONE buttons.
4. Press the ON/OFF button to exit system set up.
GENERAL INFORMATION
A. Reduce Heat Gain
The ability of the air conditioner to maintain the desired inside temperature depends
on the heat gain of the RV. Some preventative measures taken by the occupants of
the RV can reduce the heat gain and improve the performance of the air conditioner.
During extremely high outdoor temperatures, the heat gain of the vehicle may be
reduced by:
●Parking the RV in a shaded area.
●Using window shades (blinds and/or curtains).
●Keeping windows and doors shut or minimizing usage.
●Avoiding the use of heat producing appliances.
Operation on High Fan/Cooling mode will give optimum or maximum efficiency in
high humidity or high outside temperatures.
Starting the air conditioner early in the morning and giving it a “head start” on the
expected high outdoor ambient will greatly improve its ability to maintain the desired
indoor temperature.
For a more permanent solution to high heat gain, accessories like Dometic outdoor
patio and window awnings will reduce heat gain by removing the direct sun. They
also add a nice area to enjoy company during the cool of the evening.
B. Disclaimer
The manufacturer of this air conditioner will not be responsible for damage caused
by condensed moisture on ceilings or other surfaces. Air contains moisture and this
moisture tends to condense on cold surfaces. When air enters the RV, condensed
moisture may appear on the ceiling, windows, metal parts, etc. During normal op-
eration, this unit removes moisture from the air. Keeping doors and windows closed
when this air conditioner is in operation will minimize condensed moisture on cold
surfaces.
5
C. Quick Reference To Control Buttons
Press to display
inside temperature
Press to select
temperature format
Press to decrease
temperature or humidity
set-point
Press to increase temperature
or humidity set-point
Press to display relative
humidity set-point
(Select Models)
Press to select zone
Press to select
On and OFF
Press to select
fan speed
Press to set
clock
Press to
select mode Press to select
program 1 or 2
D. Quick Reference To LCD Icons
Temperature,
Humidity Set-Point
or Error Code
Operation Mode
Time of Day
Fan Speed
Zone
Humidity Set-Point
Percent
Dehumidify
Icon
Program
Clean or Replace
Filter
Compressor
Delay
ABOUT YOUR NEW THERMOSTAT

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PROGRAMMING & OPERATIONS
A. ON/OFF
To turn ON the CCC 2 thermostat when the back light is OFF, first press any button
to wake up the CCC 2 thermostat. Then press and release the ON/OFF button. The
LCD will display the last programmed settings. To turn OFF the CCC 2 thermostat
press the ON/OFF button and release. Only the time of day will display when the
CCC 2 thermostat is in the OFF condition.
B. Clock Setting
Press the CLOCK button to initiate the clock setting sub-menu on the CCC 2 ther-
mostat. When in this menu, the hour digits will flash first. The hour can be adjusted
using the  or  buttons. Press the CLOCK button again and the minute digits will
flash, allowing the minute setting to be adjusted using the  or  buttons. Press
it a third time and the AM or PM icon will flash, allowing the AM or PM setting to be
adjusted using the  or  buttons. Press it one more time to store the new time in
memory and exit the clock setting sub-menu.
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N. Power Interruption
In the event the power to the air conditioner or control is interrupted, the system will
restart with the previous set points once power is restored.
O. LCD Error Code
When the system determines that one of the faults listed below has occurred an er-
ror code will be displayed in the LCD for the zone in which the error occurred. During
normal operation, a blinking zone number indicates a fault has occurred. The error
code is displayed in place of the temperature set-point.
Error Code:
E1 Loss of communication between the CCC 2 thermostat and all system power
module boards. System will shut down.
E1 Loss of communication between the CCC 2 thermostat and an individual system
power module board. The LED will display error code “E1” and the zone number
that lost communication. Any additional zones that loose communication will
blink in addition to the current zone.
E2 Open circuit or out-of-range indoor temperature sensor. All heat, cool, and dehu-
midify operations will be locked out. Manual fan operation will continue.
E3 Shorted Indoor Temperature Sensor. All heat, cool, and dehumidify operation
will be locked out. Manual fan operation will continue.
E4 Open circuit or out of range Outdoor Temperature Sensor (select models). Heat
pump and dehumidification operation will be locked out. Air conditioner, furnace,
heat strip, and fan operation can continue to operate.
E5 Open circuit or out-of-range freeze sensor. Air conditioner and dehumidification
operation will be locked out. Heat pump, furnace, heat strip, and fan operation
can continue to operate but displays the last temperature set-point.
E6 Open circuit humidity sensor (Select Models). Air conditioner and dehumidifica-
tion will be locked out. Heat pump, furnace, heat strip, and fan can continue to
operate.
E7 Loss of 120 Vac power to all power module boards on the system. The system
will shut down.
E8 Invalid zone configuration. The heat pump and heat strip DIP switches are both
set to the ON position in one zone. Heat pump, heat strip, air conditioner, and
dehumidify operation will be locked out in the affected zone.
E9 Invalid zone configuration. The dehumidifier DIP switch and either the heat
pump or heat strip DIP switches are set to the ON position in one zone. Heat
pump, heat strip, air conditioner, and dehumidify operation will be locked out in
the affected zone.
SPECIAL FEATURES

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J. Auto Generator Start (AGS)
On RVs equipped with an optional AGS Kit, the vehicle generator will automatically
start when any zone calls for cooling and will shut OFF when zones reach set point.
The Auto Generator Start (AGS) function will be implemented by an individual pow-
er module board configured for this function by setting the GEN Start DIP switch
ON. On the AGS power module board a relay shall be used to provide a start sig-
nal to the generator. The normally open relay contacts are utilized and the closure
of these contacts provides the signal to start the generator. The AGS relay shall
be activated when any zone or stage requires cooling, heat pump, dehumidifier or
heat strip operation. When a zone calls for heating, cooling or dehumidification, the
AGS relay shall be closed, followed by a time delay to allow the generator to warm
up after which time the output relay will be activated on the zone that initiated the
heating, cooling or dehumidification request. When the heat/cool and dehumidify
requests in all zones have been satisfied, the AGS relay will open and the generator
will shut-down.
K. Load Shed
The Dometic CCC 2 thermostat has provisions for Load Shedding. The AC pow-
er module board shall provide the 12 Vdc source for the Load Shed signal. This
12 Vdc source shall be turned ON 1 second before the compressor relay when the
system calls for the compressor to be ON. The Load Shed source shall remain ON
when compressor is caused to turn OFF due to being disable by either a Freeze
Sensor or a Load Shed condition. The load shed source signal will be switched to
the Load Shed input by the normally open contacts or an off-board relay from the RV
power management system. When the Load Shed signal is detected, the compres-
sor shall turn OFF.
L. Defrost Cycle (Heat Pump Models Only)
To avoid frost formation on the outside coil and to obtain maximum performance
when the outside temperature is less than 42 °F (6 °C) and greater than 30 °F
(-1 °C), a defrost cycle will be initiated. While operating in this temperature range the
compressor continuous run time is limited to 25 minutes. When this time is accumu-
lated, the fan will shut OFF, the refrigerant flow will be reversed, and the compres-
sor will continue to run for 4.5 minutes. During this 4.5 minute period, the LCD will
toggle between HP and Defrost. The refrigerant flow will then be reversed and after
a 30 second delay the fan will resume operation. This cycle will remove any frost
formation on the outside coil. This cycle will repeat itself until the outside tempera-
ture is greater than 42 °F (6 °C). If the outside temperature becomes less than 30 °F
(-1 °C) the heat pump will shut OFF and the auxiliary heat (if provided) will turn ON.
M. Compressor Time Delay
A time delay of approximately 2 minutes occurs any time the compressor is required
to begin the cooling or heat pump cycle.
SPECIAL FEATURES
7
C. Temperature Format °F / °C
Press the °F / °C button to switch between Fahrenheit and Centigrade format.
“°F” indicates Fahrenheit and “°C” indicates Centigrade.
D. Inside Temperature
Press and hold the INSIDE TEMP button and the LCD will display the current inside
temperature recorded at the CCC 2 Thermostat (or at the optional remote indoor
temperature sensor) instead of the temperature set-point. The LCD will also display
“IN” to indicate that the inside temperature is being displayed. When the INSIDE
TEMP button is released, the LCD will return to the programmed temperature set-
point.
PROGRAMMING & OPERATIONS

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E. Zone Selection
Press the ZONE button to cycle the LCD display through the available zone selec-
tions; “Zone 1,” “Zone 2”, “Zone 3,” and “Zone 4.” Only the available zones installed
within your system will display. For more information on zones, see section, “B.
Zone Control” on page (13).
F. Mode Selection
Press the MODE button and the LCD will display the first available mode. Each
successive press will advance to the next available mode. Continue to press the
MODE button until the desired mode appears. Depending on the systems installed,
your choices will be “OFF,” “COOL,” “AUTO,” “HP,” “FURN” or “AQUA,” “HS,” and
“FAN.” For more information on modes, see main heading, “Mode Description” on
page (10).
PROGRAMMING & OPERATIONS
17
G. Auxiliary Heat (Heat Pump Models Only)
Auxiliary heat operation will be activated when the measured temperature of the
outdoor temperature sensor is less than 30 °F (-1 °C). If the system is equipped with
a furnace, the control will select FURN heating mode for the auxiliary heat source.
Auxiliary heat operation, once initiated, will have priority over a heat pump defrost
cycle. Auxiliary heat operation will be de-activated and the heat pump operation will
resume when the temperature of the outdoor temperature sensor is higher than
35 °F (2 °C).
H. Stage Select - Two Air Conditioner/Heat Pump Units (Select Models)
On One Zone
This system can be configured to run two air conditioner/heat pump units using the
same temperature set-point for controlling the comfort level in one zone. One unit is
designated as the primary stage and the other unit is designated as the secondary
stage. The power module boards in both units will use the same DIP switch selec-
tion for the Zone (for example, both will be set to “Zone 2”). On the unit designated
“secondary” the power module board DIP switch identified as “Ext Stage” must be
set to the ON position in order to configure the power module board for the on-
demand secondary stage operation (in this example “Zone 2” and “Ext Stage” DIP
switches are in the ON position). In this stage configuration, the CCC 2 thermostat
temperature set-point will be used for both the primary and the secondary stage
air conditioner/heat pump. Only one indoor temperature sensor is required for this
configuration and it must be installed in the power module board configured as the
primary control.
The turn ON time for the compressors and fans will be controlled to ensure that
compressors on the system start one-at-a-time. A minimum delay of 20 to 30 sec-
onds is required between compressor starts.
I. Stage Select - Dual Compressor Air Conditioner/Heat Pump (Select
Models)
The Dometic CCC 2 thermostat will operate an air conditioner/heat pump unit with
two compressors. On dual basement air conditioner/heat pump units, a single pow-
er module board is used to control the operation of two compressors in one air
conditioner/heat pump. This system is designed to optimize comfort and operating
efficiency by providing an on-demand secondary stage of operation. The CCC 2
thermostat will allow the user to set the primary temperature set-point. The set-point
for the secondary stage is preset at a differential of 3 °F / °C from the primary tem-
perature set-point (that is , +3 °F / °C for cooling and -3 °F / °C for heating).
Example: In the cooling mode with the set-point set to 72 °F, the primary air con-
ditioner will cycle ON when the room temperature is ≥73 °F The secondary stage
compressor will cycle ON when the temperature is ≥75 °F In the heating mode with
the set-point at 72º F, the primary compressor will cycle ON when the temperature is
≤71 °F The secondary stage compressor will cycle ON when the room temperature
is ≤69 °F.
SPECIAL FEATURES

16
E. Examples Of Times Programmed
F. CANbus Interface
The CANbus interface is designed to communicate between the Dometic CCC 2
thermostat and a CAN (Controller Area Network) protocol generator. Refer to the
CANbus installation instructions for more information on installation and operation
of the CANbus.
SPECIAL FEATURES
9
G. Fan Speed
Press the FAN button to select the desired fan speed. Each successive press will
advance to the next available speed. Your selections will be “Auto,” “LOW,” “MED,”
and “HIGH.” The fan will run continuously during “LOW,” “MED,” and “HIGH” fan
settings. The fan will cycle ON and OFF with the thermostat on “AUTO” setting. For
more information on auto fan, see section, “A. Auto Fan” on page (13).
H. Temperature Set-Point
Press the  or  button to change the temperature set-point. The temperature
set-point is indicated by (2) digits on the LCD. Press the  button to increase and
the  button to decrease the temperature set-point. The maximum set-point for the
system is 90 °F (32 °C). The minimum set-point is determined by the active operat-
ing mode. For heating, the minimum is 40 °F (4 °C) and minimum for cooling is 55
°F (13 °C).
PROGRAMMING & OPERATIONS

10
I. Dehumidify Setting (Select Models)
To set the dehumidify set-point, the system will need to be in a mode other
than OFF.
Press the DEHUMIDIFY button. The LCD will display the “dEHm” icon, the water
droplet icon , and the humidity set-point. The set-point can be adjusted in
5% increments from 35% to 70%. Press the  button to increase the set-point and
the
 button to decrease the set-point. To disable the dehumidify operation, press
and hold the DEHUMIDIFY button for 3 seconds. The water droplet icon will be
turned OFF and returns to the previous settings.
MODE DESCRIPTION
A. “OFF” - Off Mode
Displays OFF mode in a zone.
B. “COOL” - Cool Mode
In the COOL mode the system will cycle the compressor ON and OFF based on
the room air temperature and the temperature set-point on the CCC 2 thermostat.
When the system calls for cooling there will be a delay of approximately 2 minutes.
During this delay, the hour glass icon will be displayed in the LCD. In auto fan, the
fan will turn ON first followed by the compressor in approximately 15 seconds. In
this mode there are (4) fan speed selections:
LOW: The fan operates continuously at low speed. The compressor cycles ON and
OFF.
MED: The fan operates continuously at medium speed. The compressor cycles ON
and OFF.
PROGRAMMING & OPERATIONS
15
When program “1” or “2” is operating, the “PROG 1” or “PROG 2” icon will be dis-
played in the LCD. The zone will continue to operate in the programmed setting until
the program is manually cancelled.
To cancel the program operation, press and hold the PROGRAM button for 3 sec-
onds. The zone will be restored to normal operation.
SPECIAL FEATURES