Dometic 3312026 series, 3312024 series Operating Instructions Manual

Comfort Control Center 2 Thermostat

Operating Instructions

Programmable Thermostat

MODEL

3312026.XXX With Dehumidify

3312024.XXX With Out Dehumidify

2

TABLE OF CONTENTS

About your new thermostat

Features .....................................................................................................................2

System Conguration & Initialization ..........................................................................2

Factory preset settings ...............................................................................................3

Quick reference to control buttons..............................................................................3

Quick reference to LCD icons.....................................................................................3

Programming & Operations

ON/OFF ......................................................................................................................3

Clock setting ...............................................................................................................4

Temperature format ºF/ºC ...........................................................................................4

Inside Temperature .....................................................................................................4

Outside Temperature ..................................................................................................4

Zone Selection............................................................................................................5

Mode Selection ...........................................................................................................5

Fan Speed .................................................................................................................. 5

Temperature Set-Point................................................................................................5

Dehumidify Setting (Select Models) ...........................................................................6

Mode description

OFF ............................................................................................................................6

Cool ............................................................................................................................ 6

Heat Pump..................................................................................................................6

Heat Strip....................................................................................................................7

Fan ............................................................................................................................7

Furnace/Aqua ............................................................................................................. 7

Auto Change Over ......................................................................................................7

Special Features

Auto Fan ..................................................................................................................... 8

Zone Control ...............................................................................................................8

Dehumidify (Select Models)........................................................................................8

Program 1 & 2 ............................................................................................................8

CANbus ......................................................................................................................9

Auxiliary Heat (Heat Pump Models Only) ................................................................... 9

Stage Select (Two Air Conditioners/Heat Pump Units)...............................................9

Stage Select (Models Equipped With Two Compressor) ............................................9

Automatic Generator Start ..........................................................................................10

Load Shed ..................................................................................................................10

Defrost Cycle (Heat Pump Models Only)....................................................................10

Compressor Time Delay .............................................................................................10

Power Interruption ......................................................................................................10

LCD Error Codes ........................................................................................................ 10

System Reset Procedure .........................................................................................11

General Information .................................................................................................12

Maintenance ..............................................................................................................12

Service .......................................................................................................................12

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
operation and for many years of reliable service.

Features

• Liquid Crystal Display

• 2 operation programs

• Outdoor temperature sensing (select models)

• Constant time of day display

• Remote Sensor (Precise comfort control within 1º F. of set-point)

• Display reminder lets you know when to service or replace lters

• Up to 4 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 characteristics
of this system.
Your CCC 2 thermostat is equipped with a liquid crystal display (LCD) that identies
the mode of operation (OFF, Cool, Heat Pump, Fan, Heat Strip, Auto, & Furnace or
Aqua), temperature set-point, zone identication (1, 2, 3, 4), fan speed (Auto, Low,
Med, High), program 1 and 2, inside temperature, outside temperature, clock, ºF/ºC,
compressor delay, lter maintenance, and dehumidify operation with humidity set
point. The modes of operation viewed in the LCD will vary depending on the system
installed in your RV.

System Conguration & 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. Once the system is
completely installed, do a system reset.

• Make sure the CCC 2 thermostat is in the OFF condition. See page 3, Quick
reference to control buttons.

• Simultaneously press and hold the MODE and ZONE buttons. See page 3,
Quick reference to control buttons.

• The LCD will display “IniT” and all available zones.

• Release the MODE and ZONE buttons.

• Press the ON/OFF button to exit system set up.

The furnace ON/OFF temperature differential should be set at this time. See “Pro-
gramming & Operations” on page 7 for further information on furnace mode dif­ferential setting.
Any time a system reset occurs, the factory default settings are restored. See “Fac-
tory Preset Settings” on page 3.
In the unlikely event of CCC 2 system memory loss or dip switch setting change,
the CCC 2 thermostat will require a system reset. Refer to page 11 for system reset
procedure.

About your new thermostat

3

ON/OFF

To turn ON the CCC 2 thermostat when the back light is off, rst 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.

Factory Preset Settings

All Zones

Function Setting

Time of Day (Clock) — — —

Each Zone

Relative Humidity 50%

Heating 68ºF / 20ºC

Cooling 72ºF / 22ºC

Automatic 70ºF / 21ºC

Fan Speed Auto

Mode Off

Humidity (select models) Off

Factory Preset Settings Each Zone

Program 1

Function Setting

Heating 68ºF / 20ºC

Cooling 72ºF / 22ºC

Automatic 70ºF / 21ºC

Fan Speed Auto

Mode Off

Time 8:00 AM

Program 2

Heating 68ºF / 20ºC

Cooling 72ºF / 22ºC

Automatic 70º / 21ºC

Fan Speed Auto

Mode Off

Time 10:00 PM

Your Dometic CCC 2 thermostat has been pre-programmed. Review settings below
and adjust the settings to your personal comfort level.
Note: 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 at-

tempt.

Quick reference to LCD icons

Temperature,
Humidity Set-Point
or Error Code

Operation Mode

Time of Day

Fan Speed

Zone

Programming & Operations

Humidity Set-Point
Percent

Dehumidify
Icon

Program

Clean or Replace
Filter

Compressor
Delay

Press to display
inside temperature

Press to display
outside 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

Quick reference to control buttons

4

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.

Outside Temperature

Press and hold the OUTSIDE TEMP button and the LCD will display the current
outside temperature recorded at the outdoor temperature sensor in place of the tem­perature set-point. The LCD will also display “OUT” to indicate the outside tempera­ture is being displayed. When the OUTSIDE TEMP button is released, the LCD will
return to the programmed temperature set-point.
The outside temperature sensor is located in the roof top unit. The CCC 2 thermostat
temperature measuring range is between -5° F and 105° F. When the roof top unit is
exposed to direct sunlight, the upper limit of the CCC 2 thermostat could be reached
even though the actual outdoor temperature is lower than 105° F. Outside tempera­tures above 105° F will be displayed as 105 ° F.

Clock Setting

Press the CLOCK button to initiate the clock setting sub-menu on the CCC 2 ther­mostat. When in this menu, the hour digits will ash rst. The hour can be adjusted
using the or buttons. Press the CLOCK button again and the minute digits
will ash, allowing the minute setting to be adjusted using the or buttons.
Press it a third time and the AM or PM icon will ash, 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.

Temperature format ºF / ºC

Press the ºF / ºC button to switch between Fahrenheit and Centigrade format. ºF
indicates Fahrenheit and ºC indicates Centigrade