Quote:
Originally Posted by bcbowers
Very interesting and good to know. Every website I’ve searched for replacement Dometic Penquin notes “Requires CCC Thermostat”. I hope you’re right since that will me some bucks.  |
Hi Bob,
I have the same coach as yours, purchased from PPL Houston last September. The coach had a defective front unit (15K Heat Pump). The seller agreed to replace that unit before the sale closed. On the date agreed upon for closing and delivery, I flew to Houston and during the walkthrough, discovered the rear unit was not cooling. PPL's solution was to replace the rear unit and the thermostat to achieve full functionality for both units. My experience with PPL's service dept was extremely disappointing, since they seemed to be lost on this issue, but I figured I was getting two new AC units, so I waited for them to perform the replacements and drove the Coach home to DFW. Although I had owned a Class A DP for 20 years prior, I had no expereience with Dometic AC units, so I researched and downloaded a considerable amount of information to educate myself.
This is what I found:
Dometic has offered a Climate Control Center (CCC) system for many years. The original CCC system with 5 button thermostat is what our coaches were equipped with. The rooftop units required a control board at each unit that was mounted inside an external metal box (approx 6"x6"x2") at each unit above the ceiling. If you remove the return air grille it will be mounted in that area. The Control Boards(boxes) were interconnected with a 4 wire data buss that also connected to the thermostat as well. If your coach has a residential fridge, it will also be equipped with AGS(Automatic Generator Start) which requires a separate Control Board/Box which facilitates starting of the generator when an AGS temp setting is programmed into the thermostat. Mine is stuffed behind the tank monitor panel in the OH cabinet next to the fridge.
The important thing to understand is that the CCC and CCC2 control boards can not interoperate on the same control data buss. All boards must be of the same generation as well as the thermostat.
All of the Dometic Penguin II units that are configured for multi-zone operation come with the newest generation Control Boards but they are now inside the unit and can be accessed by removing the rooftop shroud.
Referencing the model numbers of the older AC units is fairly useless exercise since they have been discontinured long ago. if you can look them up and decode the model numbers you might learn the capacity of each unit and whether they are cool only or heat pump. My new units are as follows:
Front: 651816HXX1C0-01 SKU:9600003813 - High capacity(15K) heat pump, multi-zone, polar white.
Rear: 641816CXX1C0 SKU: 9105305510 - High capacity(15K) cool only, multi-zone, polar white.
Thermostat: 3314082.011 SKU: 9108698985 - Multi-zone CCC2, polar white.
AGS Control box (if needed): 3312020.000 - CCC2 compatible control board in metal housing.
BTW, the CCC2 thermostat is about $125 on Amazon about the same cost for the Control Board/Box.
I hope this helps
Linear Mode
