(A certain member suggested that we needed an easy to find thread that listed the locations of the expansion tank, so, TADA!)
The TaB Alde heating system debuted starting with the 2014 model year. The glycol expansion tank locations vary by model.
Clamshell Models
The CS (no wet bath) model’s tank is located in a cabinet next to the floor A/C unit near the front of the trailer.
The CSS model tank is easily located behind the hatch over the toilet.
320 Models
The early non-clamshell model tanks (2014 to early 2015 model years) are located under the driver’s side rear shelf. Remove the square head screws to lift the shelf and expose the tank.
With the redesign of the rear shelf, beginning with the 2016 model year, the tank in the non-clamshell models is located at the end of the driver’s side rear shelf, behind the triangle-shaped, wood panel. Again, remove the square headed screws and slide the panel towards the front of the trailer to uncover the tank.
New to the 2021 320 S and Clamshell models - the tank is behind a panel under the wet-bath sink. White caps cover the screws holding the panel in place.
The 400 Models
The 400 model tank is in the closet on 400s with the 2-way refrigerator. On 400s with the 3-way refrigerator, it is inside the cubby area to the right of the driver’s side porthole window.
2-way frig model (2018 - 2020 models)
3-way frig model for 2018 - 2020 models and ALL 2021 400 models
Comments
(Alde: 3020; Refrig: Isotherm Cruise 65 Eleg; Battery: BB 100Ah LiFePo4; Solar: Renogy 100Ah Suitcase; Victron BMV-712; Pwr Cntr: PD-4135KW2B; EMS: PI-HW30C)
Greg & Marlene (Tucson, AZ)
2021 T@B 320S Boondock “The T@B”
Towed by a white 2019 Ford F-150 4x4 Supercab, 3.5L V6 Ecoboost “The Truck”
2021 T@B Boondock CS-S
2018 Nissan Pathfinder
Ontario, Canada
2021 T@b 320 Boondock "Mattie Ross" | 2021 T@b Nights: 239 | Total nights in a T@b 455 | 2022 Jeep Grand Cherokee L Overland | T@b owner since 2014
cheers
cheers
(Alde: 3020; Refrig: Isotherm Cruise 65 Eleg; Battery: BB 100Ah LiFePo4; Solar: Renogy 100Ah Suitcase; Victron BMV-712; Pwr Cntr: PD-4135KW2B; EMS: PI-HW30C)
Greg & Marlene (Tucson, AZ)
cheers
2021 T@B 320S Boondock “The T@B”
Towed by a white 2019 Ford F-150 4x4 Supercab, 3.5L V6 Ecoboost “The Truck”
Has anyone found a way to modify that cover with some sort of clip or something, rather than the screws? Seems if the cover needs to be removed frequently that there should be a more user friendly way to do it.
"Blessed are the curious, for they shall have adventures.”― Lovelle Drachman
Editorializing: IMO, they make this pretty hard to get at if we're supposed to check often. Also, our dealer should've done a better walk-thru, so we'd know about this and probably 20 other things.
2021 T@B 320S Boondock “The T@B”
Towed by a white 2019 Ford F-150 4x4 Supercab, 3.5L V6 Ecoboost “The Truck”
6" Marine Port: https://amzn.to/3OZl1cA
2023 Ford Maverick XLT
The Finger Lakes of New York