Dometic 640312 Series Installation Instructions Manual Download Page 4

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A.  Table - Unit Data

Model No.

Nominal

Capacity

(BTU HR)

Cooling

Electrical

Rating

120 Vac

60 Hz 1 ph

Compressor

Rated Load

Amps

Compressor

Locked 

Rotor

Amps

Fan Motor

Rated Load 

Amps

Fan Motor

Locked

Rotor 

Amps

Refrigerant

R-410A

(oz)

Minimum

Wire Size*

12 AWG

Copper

Up to 24'

AC Circuit

Protection

***Installer

Supplied

Minimum

Generator

Size**

1 Unit / 2 Units

640312.30X

11,000

10.5

53.0

3.5

10.0

19.0

20 Amp

3.5 kW / 5.0 kW

640312C35X

11,000

10.5

53.0

3.5

10.0

19.0

20 Amp

3.5 kW / 5.0 kW

640312.80X

11,000

11.5

53.0

2.6

8.5

20.0

20 Amp

3.5 kW / 5.0 kW

640312.83X

11,000

12.5

63.0

2.6

8.5

18.0

20 Amp

3.5 kW / 5.0 kW

640312C85X

11,000

11.5

53.0

2.6

8.5

20.0

20 Amp

3.5 kW / 5.0 kW

640315.30X

13,500

12.5

61.0

3.5

10.0

17.5

20 Amp

3.5 kW / 5.0 kW

640315C35X

13,500

12.5

61.0

3.5

10.0

17.5

20 Amp

3.5 kW / 5.0 kW

640315.80X

13,500

12.6

63.0

2.6

8.5

18.0

20 Amp

3.5 kW / 5.0 kW

640315.83X

13,500

12.5

63.0

2.6

8.5

19.0

20 Amp

3.5 kW / 5.0 kW

640315.84X

13,500

12.5

63.0

3.5

8.5

19.0

20 Amp

3.5 kW / 5.0 kW

640315C85X

13,500

12.6

63.0

2.6

8.5

18.0

20 Amp

3.5 kW / 5.0 kW

*  For wire length over 24 ft., consult the National Electrical Code for proper sizing.

**  Dometic Corporation gives 

GENERAL

 guidelines for generator  requirements. These guidelines come from experiences 

people have had in actual applications. When sizing the generator, the total power usage of your RV must be considered. 

Keep in mind generators lose power at high altitudes and from lack of maintenance.

***  CIRCUIT PROTECTION: Time Delay Fuse or Circuit Breaker Required.

B.  Roof Requirements

 

● A 14-1/4″ x 14-1/4″ (±1/8″) square opening (hereinafter referred to as “roof opening”) is required for installing this 

unit. This opening is part of the return air system of the unit and 

MUST

 be finished in accordance with NFPA 1192. 

 

Roof construction with rafters/joists support frames on a minimum of 16 inch centers.

 

Minimum of 2 inches and maximum of 5-1/2 inches distance between roof to ceiling of RV.

C.  Table - Air Distribution Duct Sizing & Design

Return Air Grille Kit

3105007.XXX

3105935.XXX

Roof Cavity Depth

2.0 In. Min. - 5-1/2 In. Max.

Duct Cross Sectional Area

21.0 Sq. In. Min.

*Duct Size

Depth

Width

Total Duct Length

Duct Length (short run)

1-1/2 In. Min. - 2-1/2 In. Max.

7.0 In. Min. - 10.0 In. Max.

15.0 Ft. Min. - 40.0 Ft. Max.

1/3 Total Duct Length

Register Requirements per A/C Unit

Number Required

Register Free Air Area

Distance From Duct End

Distance From Elbow

4 Min. - 8 Max.

14.0 Sq. In.

5.0 In. Min. - 8.0 In. Max.

15.0 In.

Total System Static Air Pressure

Blower at High Speed,

Filter & Grill In Place

0.12 - 0.65 In W.C.

*

Duct sizes listed are inside dimensions. Duct material 

MUST

 meet or exceed any agency or RVIA Standard in effect at the 

time the RV is manufactured.

SPECIFICATIONS

Summary of Contents for 640312 Series

Page 1: ... 3314448 014 6 18 French 3314985 015_B 2018 Dometic Corporation LaGrange IN 46761 RECORD THIS INFORMATION FOR FUTURE REFERENCE Model Number Serial Number Date Purchased Roof Top Unit Description Model Use With Return Air Grille Model CCC 2 Electronic Control Kit CCC 2 Thermostat Indoor Temperature Sensor Kit Air Conditioner 640312 640315 3105007 XXX OR 3105935 XXX 3312020 000 3312024 XXX OR 331408...

Page 2: ...ir Cover 14 M System Reset Checkout 14 N Furnace Aqua Temperature Differential Setting 14 GENERAL INFORMATION 15 A Frost Formation On Cooling Coil 15 B Heat Gain 15 C Condensation 15 D Air Distribution 15 WIRING DIAGRAMS 16 A Simple RV Wiring Diagram 16 B Unit Wiring Diagram 17 C 3312020 000 CCC 2 Electronic Control Kit Wiring Diagram 17 INTRODUCTION This air conditioner hereinafter referred to as...

Page 3: ... all safety information and instructions to avoid possible injury or death Read and understand these instructions be fore installing using servicing performing maintenance on this product Incorrect installation operation servicing maintaining of this product can lead to seri ous injury Follow all instructions The installation MUST comply with all ap plicable local or national codes including the l...

Page 4: ...people have had in actual applications When sizing the generator the total power usage of your RV must be considered Keep in mind generators lose power at high altitudes and from lack of maintenance CIRCUIT PROTECTION Time Delay Fuse or Circuit Breaker Required B Roof Requirements A 14 1 4 x 14 1 4 1 8 square opening hereinafter referred to as roof opening is required for installing this unit This...

Page 5: ... c Check inside the RV for return air grille ob structions i e door openings room divid ers curtains ceiling fixtures etc See FIG 2 FIG 2 Dimensions Are Nominal 17 17 3 4 1 3 4 1 1 4 1 1 2 1 1 2 17 17 Roof Opening B Roof Preparation 1 FIRE OR ELECTRICAL SHOCK HAZARD Verify there are no obstacles inside RV s roof and or walls wires pipes etc Shut OFF gas supply disconnect 120 Vac power from RV and ...

Page 6: ...Sizing Design Requirements See C Ta ble Air Distribution Duct Sizing Design on page 4 Alternate configurations and methods may be used which still allow the unit to operate properly however these alternate configurations and methods MUST be approved by Dometic Cor poration in writing The following in structions are based upon the use of Return Air Grille Kits 3105007 XXX 3105935 XXX 3 4 Min Leave ...

Page 7: ...nto the roof opening 3 Route an indoor temperature sensor optional from the roof opening to the indoor temperature sensor location The 2 pin connector end goes to the roof opening See indoor temperature sensor installation instructions for proper sensor location 4 Route a 4 conductor communication cable from the roof opening to the thermostat mounting lo cation using the shortest most direct route...

Page 8: ... with the in door temperature sensor for details of instal lation F Thermostat Indoor Temperature Sensor Thermostat Communication Cable Installation 1 The previously run communication cable 4 con ductor telephone cable must be terminated with two 2 RJ 11 6C4P telephone connectors Re fer to the crimp tool manufacturer for crimping instructions See FIG 6 FIG 7 RJ 11 6C4P connectors MUST be in stalle...

Page 9: ... SZ electronic control box Avail able wire colors may vary 1 Separate the cover from the LCD SZ thermostat by pressing down on the tab located at the bot tom of the base 2 Insert the previously run communication cable 3 conductor cable through the hole in the base assembly 3 Cut back the outer cable shield approximately 3 inches and strip 1 4 insulation from each wire 4 Mount the thermostat level ...

Page 10: ...er lifting technique and control when lifting product Failure to obey this caution could result in injury Place the unit on the roof 3 Do NOT slide unit Otherwise damage to gasket on bottom of unit may occur and could cause a leak Lift and place the unit over the prepared open ing using the gasket on the unit as a guide See FIG 12 FIG 12 FRONT Lift Place Do Not Slide 4 Place the electronic control...

Page 11: ...4 mounting bolts EVENLY within 40 to 50 inch pounds See FIG 16 This will compress the roof gasket to approximately 1 2 6 Installation Of Divider Plate a Measure the ceiling to roof thickness If distance is 2 0 3 3 4 remove perfo rated tab from divider plate See FIG 17 If distance is 3 3 4 5 1 2 remove no tabs b Remove the backing paper from double sided tape located on ceiling template See FIG 17 ...

Page 12: ...ling template e Locate the 1 8 x 7 x 18 self adhesive in sulation supplied with the return air grille kit Remove the backing paper from the insula tion and carefully stick onto the ceiling tem plate divider panel See FIG 19 FIG 19 Foam Tape Place Insulation In Position Do Not Cover Unit Rating Plate Divider Plate Excess width is intended to seal the di vider plate to the sides of the roof open ing...

Page 13: ...o white black to black and green to green or bare copper wire using ap propriate size connectors e Tape the connectors to the supply wire to as sure they don t vibrate off f Push the wires into the electronic control box K System Configuration Now that the system is installed it is necessary to do a system configuration 1 Electronic Control Configuration Depending on the equipment options installe...

Page 14: ...F mode c Simultaneously press the MODE and ZONE buttons The LCD will display IniT and all available zones d Release the MODE and ZONE buttons e Press the ON OFF button to exit system set up f When a dip switch is turned on after initial configuration a system reset will need to be done before the CCC 2 thermostat will rec ognize the updated selection 2 System Checkout Verify that all features of t...

Page 15: ...side temperature is relatively low This may be prevented by ad justing the thermostat control knob to a warmer setting counter clockwise Should frosting con tinue operate on any FAN ONLY setting until the cooling coil is free of frost then resume nor mal operation If frost condition persist contact your local service center for assistance B Heat Gain The ability of this air conditioner to maintain...

Page 16: ...16 WIRING DIAGRAMS A Simple RV Wiring Diagram OPTIONAL 12 VDC INPUT 2 WIRES 12 VDC INPUT 2 WIRES FIG 27 ...

Page 17: ...17 WIRING DIAGRAMS B Unit Wiring Diagram C 3312020 000 CCC 2 Electronic Control Kit Wiring Diagram ...

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