WInterizing/AC Heat Strip

  I posted this along with our "introduction" but thought more viewers would see it here. We are new owners of a 2017 PC 2910D.

1. I need to winterize. Water drain valves - I found them under the bedroom vanity behind the access door. We have rv'd since 1971 but this time I cannot read which silver handles do what (are they really labeled?). I am assuming a water heater bypass, a water heater drain and a fresh water drain. But I turn them and nothing happens..nothing drains. Can someone tell me which is which and why at least one or two is not draining the water? The owners manual does not explain.

2. This PC has the standard 13,500 AC, supposedly with a heat strip. But the thermostat only shows AC and furnace. I called PC Service a couple days ago but their tech has been outy and nobody else can help. The AC manual suggests it might be a dip switch problem but I do not even know where they are..inside or up top.

Hank
2017 PC 2910D Prod #3396

Welcome to forum.  My hot water heater is under the sink so this may not apply to your setup.  To winterize, turn the silver handles perpendicular on the lines to and from water heater and align the third silver handle with the water line to accomplish the bypass.  To drain the h/w heater you must remove the plug itself accessing it from outside panel (small channel locks are helpful), stand back because the water will flow out.  My fresh water drains are located just forward of and inside the passenger side rear storage area.  When winterizing, do not forget the outside shower as well as the mascerator pump and hose.  I had a thumb drive with videos of the procedure and you may be able to access those videos on line.

Larry

I am not sure how to edit preceding post ergo this info.  I did locate a video by Phoenix cruiser for winterizing.  Just search for "how to video" for Phoenix cruiser winterizing....Earl explains it much better than I did.

We went years without using the low point drains because turning them did nothing. A friend mentioned one of his broke and he ordered a pack online. When he gave me some of his spares to replace my "bad" valves he showed me how they PULL UP to open and drain. Huh. My original valves work fine now that I know how to open them. No turning involved.

Our low point drains are under the kitchen cabinet drawer. There is an "H" configuration with the low point drains at the feet of the H - they angle down and exit the rig through the floor. Pull up on the plastic handles to open.

The hot water bypass is the oval silver valve handle on the cross bar of the H. Turn so the wide side aligns with the water line to have it open. Turn the wide side across the pipe to close.

As stated above, the hot water tank itself is drained from outside the rig. We use the onboard water pump to blow out the lines as described in the manual for the pump.

 I watched the winterizing video on YouTube.  I drained the hot water heater OK. But I have pulled the low point drain handles and the fresh water tank does not drain (it shows 1/3 full on sensors). FYI I think this unit might not have been winterized before but should not matter. I have drained and flushed the waste tanks. I have my local mobile RV guy coming to see the new PC and we will winterize, but hoped to have all the draining done when he gets here.

Thanks again - any thoughts on why fresh water does not drain appreciated.

I am also still talking with factory Service on why the heat strip setting does not appear on our thermostat (even though they are convinced it is there). We have the 13,500 AC. I plan to call Dometic this week about possibly Dip switch settings. Apparently the factory only has one person who knows about AC and he is not always there.

Hank
2017 PC 2910D #3396

The low point drains do NOT drain the fresh water tank.  The fresh water tank drain is usually right at the point where the water line comes out of the tank and goes to the pump.  There will be a separate 1/4 turn valve there that drains the tank via a short plastic water line that comes out under the chassis.

On my 2551,there's an access hole above that valve in the base of the passenger side bed, under the mattress. No idea where it is in a 2910.

As an alternate, open the low point drains and turn on the water pump.  That will empty that fresh water tank at about 2 gallons/minute.