Tag Archives: front OTR HVAC (H3-40)

2015/09/25 (F) Miss Dig

I turned the lights out at 11 PM last night and slept until 8:15 AM this morning.  I was preparing coffee when Linda told me there were wild turkeys in the back yard.  They were gathered at the deer feed block and more showed up while we were watching.  There were 15 in all, and they were big.  We had our usual granola for breakfast with fresh blueberries, strawberries, and bananas.  We finished our morning routine and coffee at 10 AM and got back to work on the bus.

Linda continued working on removing the old wallpaper while I worked on the entry and cockpit.  She used a drywall sanding sponge to try and remove the last little bit of material from the walls she stripped yesterday and it worked rather well but not 100%.  I was able to remove the step well cover assembly yesterday and today I removed the last step before reaching the main floor.  It did not come out easily; the three screws securing it to two adjacent walls were badly rusted and the Philips heads would not hold the screwdriver bit.  I ended up prying them loose, and inelegant (brute force) but effective solution.  I am going to rebuild this step with a slightly deeper run and an open front so we can store shoes under it.  First, however, I have to tile the floor.

I spent some time examining the old tile in the driver’s part of the cockpit.  It clearly goes under the accelerator pedal but around the brake pedal.  That’s reasonable as the accelerator is electrical, with only a cable that goes through a small hole in the floor, while the brake is pneumatic and the major part of it is in the bay below the floor with all of the air lines connected to it.  I came to the conclusion that the tile was also installed under the seat base, which means Creative Mobile Interiors removed the base to install the tile.  I did not come to a final decision regarding removing the tile versus tiling over it, but I am leaning towards removing it.

I was also able to determine that the retaining nut on the swivel bases for the pilot and copilot seats was 15/16″ and accessible from the rear with the seats moved forward.  That means I can remove the seat, 6-way power base, and swivel plate as one assembly by removing one nut.  I will then have excellent access to the pedestal mounting bolts and the driver’s area once everything else is out of the way.

Rebecca from Shutz HVAC called at 10:30 AM and arrived about 15 minutes later.  Shutz is the HVAC installation contractor for the Lowe’s in Howell and she was here to look at our main air-conditioning system and give us a quote on a new Trane system as that is what Lowe’s sells.  Lowe’s had a Pro Show on Wednesday and Rebecca was staffing the Shutz table so we stopped to chat.  She let us know that everything at Lowe’s was on sale through tomorrow at closing for 10% off with our Lowe’s credit card, including installation labor.  The card is automatically good for 5% off on any product purchase so the extra 5% is not enough of an incentive to cause us to make the purchase, but we were curious what a new system might cost.  I will get a quote from Darryl at DCM, however, before making any decisions.  Also, our friend Mike (W8XH) recently had an A-C system installed and was very happy with the company, product, and installation so I will find out who he used and get a quote from them too.

Rebecca was very nice and very knowledgable.  After looking at the condenser/compressor outside I got a step ladder and she went up in the attic to look at the old air-handler/evaporator.  The system is a Coleman and we have no idea how old it is; we just know that it did not do a good job of cooling the house this summer.  The quote was for a “3 ton” system for $7,800.  With 10% off it came to $7,020 but that price was based on flushing, testing, and reusing the existing refrigerant lines, which did not sound like a good idea to me.

Charles from USIC (Miss Dig) showed up around 11:30 AM to mark the utilities.  Phil plans to start digging and grading next week, hopefully Tuesday.  Charles came to the front door and I excused myself from the air-conditioning conversation to walk the property with him.  I explained what we were having done and showed him where the work would take place.  He marked the main gas line along the entire length of our property, a portion of the branch line going to our meter, the tie in for the branch line to the house across the street, and the T at the northwest corner of our property where the main line splits to service the court.  He also marked the phone line, which runs underground from a pole west of our house to the southwest corner of our garage.  The main electrical service runs underground with the phone line but someone else has to come out and mark that.  I chatted with Charles briefly before he left and then called Phil and left him a message.

Last summer Darryl from DCM Heating and Cooling installed a new natural gas furnace with an air conditioner for our library, a natural gas heater in our garage, ran all of the black iron pipe, including 160 feet of 2″ line, hooked us up to the gas meter, and got everything working for just under $11,000.  The Trane system would be bigger than the one for the library, and the air-handler in the attic is a more difficult installation, but $7,800 for just the air-conditioner without new refrigerant lines seemed a bit high.  After Rebecca left I called and left a message for Darryl.

Linda was ready to strip the wallpaper behind the built-in sofa so we moved the two desk pedestals onto a blanket on the kitchen floor in the bus and unscrewed the seat and set it on top of the desk pedestals.  When I finally got back to work on the bus I removed the cover for the front OTR HVAC system and set it aside.  I was trying to get access to the underside of the wood trim that includes a grab handle that needs to be tightened but had a look around first.

I noticed a damper controlled by a flexible cable and figured it was what determined if the air was fresh or recirculated.  I turned the knob on the dashboard and saw the cable move but not the damper.  The damper was stuck so I loosened it by hand but the knob still did not cause it to move.  I then noticed that the sheath of the flexible cable had come loose from its retaining clip.  It was a tight spot in which to work but I was able to loosen the two screws holding the clip using a right angle screwdriver.  I slipped the sheath under the clip, tightened the screws enough to hold it, and turned the knob.  It worked!  On a day when I did not feel like I was accomplishing very much this was a tangible and unexpected success.

I removed the only four visible screws from the wood trim but it would not budge.  I had tried removing it once before without success but was determined to get it loose this time.  The only reasonable explanation was that CMI had glued it on after tightening the grab handle as part of the initial work we had them do right after we bought the coach.  I carefully worked a pry bar under the passenger side end and gradually applied force to it.  It was, indeed, “glued” on but it appeared that I would be able to pry it loose without breaking anything if I took my time.

When I did finally get it off I could see that they had used clear silicon (adhesive) caulk to attach it to a dark gray plastic piece.  Royale Coach had originally attached it to this plastic piece using four screws.  The plastic piece turned out to be the lower windshield defroster duct and I am considering how we might finish this without replacing the wood trim.  Wallpaper is currently at the top of my list but I doubt that it would be a good solution.  Of further interest to us was the wood itself.  We presumed it was maple based on the color but were puzzled why they would have used a different wood in the entryway.  Once we saw the back side, however, it was obviously walnut that lightened where it was exposed to light to the point of looking like maple.  There is other wood in the entry and copilot area that is equally light and we now realized that we had a refinishing task and not just a cleaning task, ahead of us at some point.

My next task was to scrape as much of the caulk off as I could.  I got a lot of it off, but not all.  Silicon caulk is difficult to remove.  I eventually found a single edge razor blade holder and blade and used that to get the last bit off.  I then worked on removing layers of masking tape from the edges of the base where the former step well slide was installed.

I have some carpentry to do to rebuild the steps and prep them for the tile installation and needed some materials and supplies so I went to Lowe’s and got:

  • Adhesive remover;
  • A 4’x8′ sheet of 3/16″ SurePly underlayment;
  • Two 3/4″ x 2.5″ – 6′ poplar boards;
  • A 15/16″ open or closed end ratcheting wrench;
  • A bottle of Piranha Wallpaper remover;
  • A Piranha wallpaper remover sponge;
  • A pack of 2,000 18 gauge 3/4″ long x 1/4″ crown staples;
  • A pack of 25 sheets of 120 grit and a pack of 25 sheets of 220 grit 1/4 sheet sandpaper.

I got 10% off the total bill! which was nice.  I did not get a palm sander as they were out of the Porter Cable model I wanted.  The Lowe’s in New Hudson showed two in their inventory so we will stop there tomorrow after breakfast and get one.  I also needed a half sheet of 3/4″ plywood to make a new platform to replace the step well slide but did not feel like dealing with that.

For dinner Linda heated some butternut squash ravioli she bought at Whole Foods.  She served it with sliced vegan Italian sausage cooked with mushrooms, onions, and garlic, a side dish of steamed fresh green beans, and a glass of Moscato.

After dinner I uploaded my blog posts for July 23 through 31 plus a gallery post of 11 photos I got from Jarel Beatty of the custom walnut desk in the process of being built in his shop.  I got a call back from Darryl and we discussed the new air-conditioning system.  He said he would get me a price but advised us not to let anyone reuse the old refrigerant lines.  If they are not 100% clean the old refrigerant will contaminate the new system.  If Shutz installs the Trane system it comes with a 10 year parts and labor warranty, but it would still be a hassle to deal with getting a contaminated unit repaired or replaced.

After chatting with Darryl for a while we agreed that there wasn’t any urgency to this.  For one, we need to have Darryl check the current system for leaks, and assuming it does not have one, for proper refrigerant charge, cooling capacity, and airflow.  Darryl is busy doing heating systems at the moment, but is willing to do the maintenance work.  Also, the cooling season is done for this year and we will be traveling during the hottest part of next summer.  A final factor is that this has been another expensive summer for us with the new roof on the house, the interior remodeling of our motorcoach, and the work Phil is about to do, so we would prefer to defer this expense.