LW 4000, XRS Doors, and Winter....

[MDrost1]

Folks,

This past September I installed 2 XRS doors on my, very short, LW 4000 bay. The cold is finally coming and I have some questions for the Airlift XRS door operators.

Here is my scenario. My LW 4000 bay is about 50 ft from my EQ room. my stainless pipes that feed the LW are housed in a 2X10 treated lumber trough. It is not in the best shape(I plan to rebuild next spring). It is insulated and has a 3W heat cable running through it. However, I didn't have a freeze up last year with many days from 1-10 degrees. I have radiant floor heat. My weep turns on at 38 degrees.

I want to use the doors at night to help with ice melting during the night. Do I have to change the setting for weep in my LW J0 cabinet? I know that the warm water running through the trough helps with the trough heat. Because I plan to use both doors in sub-freezing temps, do I need to adjust my settings to compensate for a warmer bay temp, and a colder trough temp?

I want to make sure I do it properly and don't make a wrong move so I figured I'd ask the pros! Thanks a ton!

 

[whitescout]

You should have two temperature probes. One should be in the bay, and the other should be mounted outside. The In bay temperature controls the weep, and the one outside will control the doors. If you have your weep set to come on at 38 degrees, the machine will weep when the temperature in the bay goes down to 38. I think that you will be surprised, that with the doors closed, and the floor heat on, you will not weep very much, except for the coldest days.

 

[gearhead]

I hardly ever get into the weep since I put the doors up on my M5s a few years ago. (if the floor heat is on, which I assume it will be) I set mine to 34 deg F. I do not use an outside temp probe. Just the in bay. As whitescout said, you may get into weep on really cold windy nights. I have festoon heat that runs through my troughs when the floor heat runs which keeps them toasty. Your concern shouldn't be the bay equipment if the doors are down. You might want to take some temp readings in the troughs to make sure your heat cable will be able to keep them warm enough since you wont have anywhere near the weep. If they don't, you would have to set your weep temp higher. (that would suck, wasted water)

 

[MDrost1]

Gearhead and whitescout,

Thanks. Yeah, unfortunately my outdoor temp sensor hasn't worked since I bought the place. In the really cold temps I am not sure how well the trough insulates the pipes. So, until next spring I'll need to figure this out. I should have thought of this earlier! I appreciate your help.

I guess I am stuck with increasing my weep temp while I have both doors down, correct? Just don't want freeze ups. Thanks!

 

[gearhead]

I planned on trying one of those wireless weather stations you can buy at the big box stores and putting the temp sensor in the coldest place in the through. Then you can set the readout in your wash office and easily monitor temps. Its probably the cheapest way to go. In my case I would use the info to fine tune my floor heat in the fall/spring. In your case it would give you an idea of what actually is going on as far as temps go. My take some of the guesswork out of it.

Follow up on above,

Found out today that the wireless weather station sensor wont transmit thru a metal trough Plan B. I will probably end up with a wired temp sensor thru the side.