The below message was sent to me by a Monaco owner that has a Norcold 1200 refrigerator. He is a Mechanical Engineer and started monitoring his boiler temperature with the ARP control. I told this gentleman that the largest issue with my Dometic DM3663 boiler temperature, besides off-level operation, was wind direction resulting in stagnation in the cooling unit compartment for my camper. Cooling fans help, but they can not over power mother nature. With years of test data, just shutting off the heat source for a brief period will generally correct the overheat situation. Wind overheating can occur both while parked, as in the testimony below, or when driving.
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The ARP devise has triggered 3 times in the last month. The boiler normally runs at 190c give or take a degree. I have the trigger point set to 200 so if it gets to 201 it turns off.
Turns out , as Paul Unmack had told me, air stagnation can be the enemy. All it takes is a sustained light to moderate breeze from the right direction and the air stops flowing thru the flu.
Obviously, I have not been able to pin down the exact direction or magnitude. I just know it happened the other day when it was kind of breezy.
I usually leave the refer in the diagnostic mode so the fin temp shows on the panel. When I walk by I know everything is working right.
When the ARP cuts the juice and turns it back on the display defaults to the single decimal point normal mode so I know the power has cycled.
Took me a day or two to figure that out, so when I looked at the stored data, sure enough it had triggered 3 times.... not all in one day because the decimal point showed up more than once over a couple days before I figured out that power had been cycled.
The ARP records the number of triggers and the max temp encountered.. which is my set point plus 1, 200c+1= 201c
I find this a great benefit for the absorption unit that was not emphasized I think or just went past my senses... .what my coach susceptible to air stagnation.. who me?
Think about it... just the right breeze can be killing the refer. I think this applies to all absorption units. This is just as bad as off level operation, and pretty much out of our control. You can level the coach and avoid un-level operation, but you cant control the wind.
Frank I know it doesn?t really apply to you since you have the residential, but I thought you would find it interesting. I think I could set the trip point a little higher as I think Paul told me the boil point of the solution is like 230c. If the fluid gets to that, the irreversible precipitation and crystallization of the sodium chromate starts taking place. That needs to be avoided and is why CU?s end up in a junk pile.
A lot more data needs to be acquired and anecdotally or empirically analyzed. But I?m satisfied at the moment that the device is yielding yet another benefit. Paul also has a version which will control a fan for the absorption coil stack to control stagnation. That may be in a beta phase... not sure. But turning it off when it needs to be off is the important thing.
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The ARP devise has triggered 3 times in the last month. The boiler normally runs at 190c give or take a degree. I have the trigger point set to 200 so if it gets to 201 it turns off.
Turns out , as Paul Unmack had told me, air stagnation can be the enemy. All it takes is a sustained light to moderate breeze from the right direction and the air stops flowing thru the flu.
Obviously, I have not been able to pin down the exact direction or magnitude. I just know it happened the other day when it was kind of breezy.
I usually leave the refer in the diagnostic mode so the fin temp shows on the panel. When I walk by I know everything is working right.
When the ARP cuts the juice and turns it back on the display defaults to the single decimal point normal mode so I know the power has cycled.
Took me a day or two to figure that out, so when I looked at the stored data, sure enough it had triggered 3 times.... not all in one day because the decimal point showed up more than once over a couple days before I figured out that power had been cycled.
The ARP records the number of triggers and the max temp encountered.. which is my set point plus 1, 200c+1= 201c
I find this a great benefit for the absorption unit that was not emphasized I think or just went past my senses... .what my coach susceptible to air stagnation.. who me?
Think about it... just the right breeze can be killing the refer. I think this applies to all absorption units. This is just as bad as off level operation, and pretty much out of our control. You can level the coach and avoid un-level operation, but you cant control the wind.
Frank I know it doesn?t really apply to you since you have the residential, but I thought you would find it interesting. I think I could set the trip point a little higher as I think Paul told me the boil point of the solution is like 230c. If the fluid gets to that, the irreversible precipitation and crystallization of the sodium chromate starts taking place. That needs to be avoided and is why CU?s end up in a junk pile.
A lot more data needs to be acquired and anecdotally or empirically analyzed. But I?m satisfied at the moment that the device is yielding yet another benefit. Paul also has a version which will control a fan for the absorption coil stack to control stagnation. That may be in a beta phase... not sure. But turning it off when it needs to be off is the important thing.