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Thread: Styrofoam block in A/C unit?
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12-17-2020, 03:35 PM #71
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12-17-2020, 07:16 PM #722019 GMC Sierra 3500HD Denali Diesel DRW (Crew Cab | 8 Ft bed | OEM Puck System | Curt Gooseneck Ball for OEM Puck | Timbrens on rear axle)
2019 Grand Design Solitude S-Class 3740BH-R Fifth Wheel (Onan 5500W LP Generator | MORryde CRE3000 and HD Shackles/Wet Bolts | 3x MORryde Cross Members | 8k Axles and Disc Brakes | Sailun S637 ST | Reese GooseBox 20k 2nd Gen | Splendide Stackable Washer and Dryer)
Full Suite of Victron Energy Products (2x 5k 24v Quattro Inverter/Charger | 2x 25.6/200 LFP Smart LiFePO4 Batteries | 2880w of Solar Panels across 4x MPPTs | Cerbo GX)
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12-17-2020, 10:21 PM #73
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I'd suggest you contact the manufacturer. I had a question about which unit I needed and they responded pretty quickly. If I remember, the heat strip goes higher up in the AC tunnel, but I would be concerned if the Styrofoam would hold up with the heat being blown through it. I'd hate to have it get hot and either give off that beautiful Styrofoam odor or actually start to melt (or burn).2020 F-250 XLT SuperCrew 7.3L Blue Ox SwayPro, 2020 Imagine 2600RB,
1600W Solar w/525AH LiFePO4, Victron 3000W, Road Armor w/wet bolt suspension, VisionWork Camera System, Peplink MAX BR1 Pro 5G Mobile Router,MicroAir EasyStart
Amateur Radio Call N9XGZ FMCA#489460 Escapees SKP#166379
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12-18-2020, 10:42 AM #74
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Spark1
My situation is similar to your in that RVairflow does not currently make a system for the Dometic Brisk Air units. After looking at what you had put together, I did something similar. The discharge section of our A/C units is significantly different from that of the Coleman units and I did not want to remove the bolts holding the unit to the roof for fear of creating a water leak. I fashioned similar pieces to yours from foam board purchased at Lowe's (I avoided purchasing a large 4 X 8 sheet and instead bought the smaller piece of green foam board). The two end pieces sit on each side of the sheet metal mounting plate and the center piece will fit into the discharge 'dump ' section. Not only making this in multiply pieces avoids having to remove the bolts holding the unit in place, but it is easy to remove the center piece if you decide you want to use the dump feature.
After doing the install, I can say that the volume of air coming from the vents has probably doubled and the noise for the unit has been reduced. Put to of these together for less that $10.00
Last edited by srobins; 12-18-2020 at 10:46 AM.
2018 297RSTS
2018 GMC Denali HD
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01-15-2021, 10:00 AM #75
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01-15-2021, 10:20 AM #76
I just ordered 2 - They sent me this link for 15% off - Give it a try please - I get $10 cash, you save 15% - lol
http://rvairflow.refr.cc/matthewg
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02-07-2021, 08:10 AM #77
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I added heat strips to both of our 15K units, replaced all that was necessary to do so. More here: https://www.mygrandrv.com/forum/show...l=1#post339560. We just spent 8 nights on the Outer Banks with nighttime temps in the mid 30's to mid 20's. They work well, even with a huge RV Airflow styrofoam deflector in the living room unit, or probably more so because of that. The Outer Banks have winds all year round, (that is after all, why Orville and Wilbur went there) in the winter they are very cold winds. However the only time the furnace ran was when we first arrived with a 40 degree coach. Once at temperature the two heat strips and the living room fireplace kept the coach at at least 72 degrees, sometimes 74 when we wanted that. During the day the temperature in the bedroom was at times too high due to the efficient airflow from the living room unit, and radiant heating on the coach. I recommend the use of heat strips with the Airxcel 15K units with the RV Airflow insert,and am contemplating the RV Airflow unit for the bedroom as well.
I left the Forum due to dictatorial administration
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02-07-2021, 08:27 AM #78
One word of caution, the furnace does more than heat the living space, it also heats the underbelly to keep plumbing and tanks from freezing up. The heat strips will do fine heating the living area but do ZERO for the plumbing, just be careful on any length of cold weather.
2019 GMC Sierra 3500HD Denali Diesel DRW (Crew Cab | 8 Ft bed | OEM Puck System | Curt Gooseneck Ball for OEM Puck | Timbrens on rear axle)
2019 Grand Design Solitude S-Class 3740BH-R Fifth Wheel (Onan 5500W LP Generator | MORryde CRE3000 and HD Shackles/Wet Bolts | 3x MORryde Cross Members | 8k Axles and Disc Brakes | Sailun S637 ST | Reese GooseBox 20k 2nd Gen | Splendide Stackable Washer and Dryer)
Full Suite of Victron Energy Products (2x 5k 24v Quattro Inverter/Charger | 2x 25.6/200 LFP Smart LiFePO4 Batteries | 2880w of Solar Panels across 4x MPPTs | Cerbo GX)
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02-07-2021, 08:52 AM #79
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I Nearly Completely Agree
I left the Forum due to dictatorial administration
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02-08-2021, 09:46 AM #802019 GMC Sierra 3500HD Denali Diesel DRW (Crew Cab | 8 Ft bed | OEM Puck System | Curt Gooseneck Ball for OEM Puck | Timbrens on rear axle)
2019 Grand Design Solitude S-Class 3740BH-R Fifth Wheel (Onan 5500W LP Generator | MORryde CRE3000 and HD Shackles/Wet Bolts | 3x MORryde Cross Members | 8k Axles and Disc Brakes | Sailun S637 ST | Reese GooseBox 20k 2nd Gen | Splendide Stackable Washer and Dryer)
Full Suite of Victron Energy Products (2x 5k 24v Quattro Inverter/Charger | 2x 25.6/200 LFP Smart LiFePO4 Batteries | 2880w of Solar Panels across 4x MPPTs | Cerbo GX)
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