Bones
Well-known member
Half trailer mod, half trailer repair.
While we were at the Dover race, my new Brisk Air II Dometic AC unit, ducted grill kit, heat strip and CCC2 t-stat was delivered.
I managed to get the rooftop unit replaced before leaving for the PA rally and "attempted" to finish the install.
Turns out the CCC2 multi zone thermostat requires a specific additional controller, no matter what the people at PPL RV parts tell you.
That controller was delivered to the PA Rally campground and I was able to finish the job before two days of rain. The modification part is going to the digital thermostat. If you have heat strips the $20 digital thermostat mod does not work.
The new AC is well insulated with form fitting styrofoam covers.
#1 top insulation cover off
#2 new heat strip
#3 Heat strip is mounted to the evaporator, so all air always blows over the heat strip
#4 New style controller mounts up here instead of just above the ducted grill
#5 The insulation almost snaps on, an interference fit
#6 Wires are no longer buried under the covers, they get taped in place here
#7 & 8 the Brisk Air II is 4-6 inches shorter and looks higher, will have to do a new trailer height measurement now.
#9 Old AC and thermostat had a 6 wire cable connecting them. Wires under screws at the t-stat and butt connectors up in the roof unit.
#10 The CCC2 t-stat uses a 4 wire phone wire. I picked up a double phone jack wall plate locally and used those for the new interface. The new T-stat also requires a much bigger hole for the mounting plate
#11 Up and running
This thermostat adds several options over the single zone version, even if only using as a single zone. The two main features are an "auto mode" that will switch between AC and heat as needed, although it takes the furnace as priority then the heat strip and a 3 speed fan mode, that also works in an auto mode.
The 3 speeds seem to be a high, higher and highest. It certainly does not come down to an "idle speed"
Noise seems to be a bit more then our original unit, even at the lowest speed. But, the trailer doesn't rumble anymore when the compressor kicks in.
The heat strip worked great for the remainder of the rally weekend.
I really like the heat strip idea for the air units. Nice job on the water mod and the air conditioning unit.