Reply
 
Thread Tools Display Modes
Old 09-19-2016, 09:23 AM   #21
Member
 
Join Date: Jul 2016
Posts: 35
Quote:
Originally Posted by MarsMan View Post
Nice choice... I stand corrected. My panel is 200W and not 250W. I forgot I wanted a 250 and could not find the real estate to install. I contatcted Coachmen and asked for the roof structure drawings for my 24J. I was able to use selftapping screws to hold down one edge of the panel. I also dicored the crap out of it. The other edge I used expanding screwed (used in drywall and again dicored the crap out of it. On the leading edge I placed a deflector (small plastic tube) to keep wind from flowing under the panel and causing some lift.30,000 miles and several days in high headwinds and higher speed, all is good. I ran the wire down thru the fridge vent and under my kitchen counter. Put a cut off switch in line between the panel and the controller. The controller was mounted near my step where my batteries are located. Ran heavy gauge wire to the batteries. Also installed Trik--L- Start to keep things charged on the Benz side when she is not in use or boon docking/parked for extended time. Check your Coach batteries monthly to make sure acid not cooking off. After 1 year of continous use, levels remain at the proper levels. PM me if you have other questions.... I may not be able to answer all. I have had extensive experience with my Prism and its "quirks"
Thank you for sharing your installation method I think I will follow your plan.
Wind load variables are are major concern to me. Given the cube shape of these Class-C units, I suspect most of the air and turbulence is pushed over the top of the coach roof creating a small area of stable, but negative pressure on the roof. The idea of simply (only) gluing a panel directly to a (fabric) roof membrane without other mechanical attachment terrifies me. Such installation would stress the roof membrane to substrate adhesion, damage the membrane, and eventually come loose. I will also ask Coachmen for drawings. It is my understanding that the Prism roof is constructed with 3/8 inch plywood covered by a TPO membrane. If so, that would make installation much easier as wood screws and adhesive would probably secure the panels ... although rubber well-nuts might be better.

I am also a bit confused regarding the factory wiring relationship between the coach and chassis batteries. Do you know how these are connected together? It seems that since the vehicle alternator system also charges the coach batteries, that a solar charger connected to the coach batteries would also charge the chassis battery. Is there a disconnect-solenoid between them?
__________________

__________________
FollowTheSun is offline   Reply With Quote
Old 09-19-2016, 09:39 AM   #22
Senior Member
 
MarsMan's Avatar
 
Join Date: Jul 2015
Location: Maritime Provinces
Posts: 230
Quote:
Originally Posted by FollowTheSun View Post
Thank you for sharing your installation method

I am also a bit confused regarding the factory wiring relationship between the coach and chassis batteries. Do you know how these are connected together? It seems that since the vehicle alternator system also charges the coach batteries, that a solar charger connected to the coach batteries would also charge the chassis battery. Is there a disconnect-solenoid between them?
FTS- ask for a wiring diagram while you are at it. They have those too

the system on the Prism is a 1-way only. There is no Boost switch either in the event your chassis battery is dead.. I do carry a long heavy gauge (braided) wire with 2 gator clips on it and I can reach from the chassis battery to the positive stud under the hood. I have tried it out and works perfectly- cost me 11$ to make and it is in my tool box. No need for a ground since everything is grounded to the chassis
__________________

__________________
MarsMan

2015 Coachmen Prism 24J MBS
USN-R '01-present
MarsMan is offline   Reply With Quote
Reply

Tags
coachmen, mount, roo, roof, solar

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




» Virginia Campgrounds

Reviews provided by




ForestRiverForums.com is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 03:30 PM.