I'm looking at installing this after my wood boiler in a closed loop radiant application to be used in the case of me being gone for days and the wood boiler not firing. Will this work with the lower boiler loop pressure of ~15psi? Also, when i am using the boiler, will temperatures of 180~220F hurt the unit? and will the unit only heat the water if its less than the set desired temp? I'm looking at installing this after my wood boiler in a closed loop radiant application to be used in the case of me being gone for days and the wood boiler not firing. Will this work with the... » Read More I'm looking at installing this after my wood boiler in a closed loop radiant application to be used in the case of me being gone for days and the wood boiler not firing. Will this work with the lower boiler loop pressure of ~15psi? Also, when i am using the boiler, will temperatures of 180~220F hurt the unit? and will the unit only heat the water if its less than the set desired temp? « Show Less
766936
Not for boiler use, nor approved by any state code to do so either. Can it be done yes, but if you have to ask, this is your clue your on the wrong track. I've repaired them in this application, and the heat exchanger doesn't last so long, also as mentioned 140. Is the max temp. For this unit. However Rinnai does make a wall hung boiler that will suit your needs, obviously your wood boiler would act as a buffer tank, without storage your limited to 3500-4000sqft of well insulated living space.
766937
The key to making this unit work (to activate the hot water) is water flow or GPM. the normal temperature setting for household use is set at 120* If you choose to use this unit for another use, you may not get the desired results.
766938
We have done exactly that with excellent results and have been using it for close to ten years now. We had a plumber install it but it could have been easily done by a homeowner with a reasonable amount of practical skill.
67723
The Rinnai is not intended for use as a means to heat water for radiant heat. It needs a minimum water pressure of 40 psi to work. It also needs a minimum water flow of about 0.4 gallons per minute to turn on. For safety reasons, the Rinnai only heats the water to 120 degrees unless you change some internal switch settings, then the max is 140.
766939
You might want to ask plumber about putting both systems in line, but I'm guessing that it's not the best idea. I'mpretty sure the unit won't fire if you've got 180f going in, but you'd also have 180f coming out - which is enough to burn you, regardless what it does to the unit. Personally, I would keep the two systems separate and install some sort of crossover. But I'd talk to a plumbing/heating professional...
2159040
We never ran ours more than 10 to 15 hours a day, when it was warmer and drier and never at night or during the rain. I inserted it in a square frame of wood with the appropriate size hole and inserted it to blow in or draw out, and ran it all last summer. We do not use it in the winter as we close off all the vent openings. I do not know your circumstances for running it, but maybe it would be a different story if the application was "continuous" as opposed to "sporadic". For me: So Far So Good.
97309
If you dont have enough water pressure the ignition will spark but you wont get a flame. If you get a flame and it doesnt stay on, you still may not have enough pressure. I installed the heater in a new system and did not have enough pressure until I cleaned out the shower head. It then worked perfectly.
2159962
I've had no problems with it so far. Initially I used the low setting because I was afraid of scorching my floors. It worked well on our high-finish oak. We've since moved and I've used it on higher quality maple using the higher setting. I've actually forgotten I had it on for 15 minutes and it did no damage to the floor. It can get really hot and will probably ruin less durable materials, but the two settings allow you work on various surfaces.
830404
Carl G I would like to know why you needed an oil lubricated pump? Changing to wet rotor may be an issue because of the clearances...if it stops it might only a small particle...I once had some system "goo" hat stopped one...it took washing it out with diesel to get it back running. Both engineering submitals indicate the NRF22 is about 2GPM less than the LR20BF at 10ft head...so here's the thing...depending on what system youre installing it on...most systems were designed for 160f DHW or 180f HWH water so by putting this in (I dont know your system but I would do it) you'll have a slighting lower flow rate...in DHW who cares as its no big deal...BUT in a HWH system your control valves will open more and this is a seriously good thing in modulating valves. There will be a larger delta T so I'd also lower my boiler temperature by at least 20f assuming youve some form of condensing boiler...this will help ensure youre in condensing mode. Circulate fluid...not temperature and you'll save a lot of money. Make sure your side stream filter is clean and check it a few times in the first 1-2 months because the more flow means the more crud is likely to get back to your HEX...if there isnt one put a Y strainer in and add a "sock" on the screen for a month or 2). A possible problem is how many zones open/ resistance decreases across too many different circuits/ zones...too many and there wont be enough. The system I installed this on it is actually the primary circulator through a 2xwall HEX serving the HWH off the DHW system...it works so well Ive been promoting it/ its been installed on 3 systems in this last year (its not my J.O.B but I do design energy and conservation projects as is my profession). Last, make sure the expansion tank is on the pump inlet side/ the return (DHWR or HWHR)...these high speed pumps cannot handle even a minimal bit of cavitation. All the best
501450
Read precautions by DeVilbiss, they state that discharge temp could affect unit if temps are too high. To remedy this I ran a 20' loop of 3/4" hard piping up the wall and then installed DeVilbiss unit in line. No problems experienced!
1421403
Not to sound condescending but if you don't have the "HEAT" function turned on the unit will not heat up. If it is still set to FAN or AC it will allow you to set it for 90 but it won't heat (and mine only goes to 80??) Additionally, if it is VERY cold (like 20s or below) the unit will not heat, it acts like a heat pump and the amount of heat goes down as the temps drop below 32 degrees. I only use mine to heat from about 30-55 degrees which covers about 90% of the time here in Alabama. During REALLY cold spells we cover the unit and use this DeLonghi TRD0715T Safeheat 1500W Portable Oil-Filled Radiator with Vertical Thermal Tunnels which we purchased here at Amazon and have used it for many years. Not to sound condescending but if you don't have the "HEAT" function turned on the unit will not heat up. If it is still set to FAN or AC it will allow you to set it for 90 but it won't heat (and mine only goes to 80??) Additionally, if it is VERY cold (like 20s or below) the unit will not heat, it acts like a heat pump and the amount of heat goes down as the temps drop below 32 degrees. I only use mine to heat from about 30-55 degrees which covers about 90% of the time here in Alabama. During REALLY cold spells we cover the unit and use this DeLonghi TRD0715T Safeheat 1500W... » Read More Not to sound condescending but if you don't have the "HEAT" function turned on the unit will not heat up. If it is still set to FAN or AC it will allow you to set it for 90 but it won't heat (and mine only goes to 80??) Additionally, if it is VERY cold (like 20s or below) the unit will not heat, it acts like a heat pump and the amount of heat goes down as the temps drop below 32 degrees. I only use mine to heat from about 30-55 degrees which covers about 90% of the time here in Alabama. During REALLY cold spells we cover the unit and use this DeLonghi TRD0715T Safeheat 1500W Portable Oil-Filled Radiator with Vertical Thermal Tunnels which we purchased here at Amazon and have used it for many years. « Show Less
755343
No problem. Just do not allow the water to boil off completely. I use a programable thermostat to shut the heater off or hold at a desired temperature.
1135821
I used this to make an evaporation unit to boil maple syrup, other reviews say they've used it for home brewing... Not much different. I hooked directly to an outside gas line and use a ball valve to regulate the flow. This thing means business! It puts out the heat. I have to keep it about 2/3rds open or it will boil out of control.
1845430
It works like any other double boiler, however it does not hold a lot of water. You need to watch it closely so that it won't run dry. This happened to me once and it got so hot it melted the handle and ruined the pot. But I like it so much that I bought a new one, but I watch it closely when I use it to keep it topped off. Certainly it can melt wax, but I just use a simple regular old double boiler to melt wax. It is less expensive, don't have to watch it so closely and once I'm done, I turn of the heat let the wax harden and store it away. Yes that means I have a double boiler dedicated to just wax, but I don't have to clean up a mess with my really nice double boiler (the De Buyer). A bit long winded but hope this helps.
519152
Sorry to say, I have not seen a shift in the readings due to temperature. The unit is hand held, so if it has a temperature sensor that is part of the unit, it is buried in the body of the unit. Suggest you contact the OEM about this question. Sorry again, but all I am worried about is- is the wood dry enough to start working. In my case, the moisture just needs to be low... not mid or high.
666738
There are a bunch of utubes out there that show you how to bypass the mechanism. Me? I found several small blocks of wood underneath the red button work fine to hold it open for boiling. That's about the only oddity about this burner it's supposed to dry fry at 350 degrees and I only need 212 of them to boil and that trigger would go off. I just found blocks of wood did the trick for me for the last 4 years.
909097
I have used it virtually everyday for the past several months and have never had a problem. No concern of burning from the steam whatsoever. Cheers!!
896241
I used this item to adjust the output of a hotplate in a homemade smoker. It did not get too hot after 8 hours but I will say that the outdoor temperature has not been over 60 degrees until this week. The website that suggested this setup also suggested a heat sink. I have one to use if necessary and plan to monitor the rheostat temperature as the weather warms up.
1640531
The internal surface of the boiler is one of the stainless steel alloys, I believe that this is true regardless of external finish which is a painted white in my case. I don't know/remember the listed wattage of the unit which is mostly the heater but includes the condensing fan also. The unit can be plugged into a standard 15amp outlet but there should be no other high current devices on that circuit at the same time. I fill mine with hot water to reduce the cycle time and hot water won't have chlorine and has less oxygen in it than city water, so this should help reduce any corrosion. It is possible to do three runs during most people's awake time, but that is about it in my experience.
811849
I am not sure what your fuel source is for radiant heat (electric, natural gas, LP, etc.), so it is hard to compare what is more or less expensive. In terms of electric heaters that will work on a standard 115VAC circuit, this is a pretty good one. At one point, the gas valve went out on our furnace heater during the winter. It was over a week before the repairman come. Two of these, along with a portable electric ceramic radiant heater, heated our entire house. Also, this has safety systems on it that are pretty good. I have also used it to keep our garage above freezing level during the winter. It has one setting just to do that and it runs on relatively low power. For the money, it's a good heater. We own two.
610256
Jerry, I teed from the tank and ran a separate line to the shop then placed another regulatorwhere I entered the shop, the reason I did this was so when my other furnace and hot waterheater kicked in the pressure would not be too low, I maybe wrong but error on safety first.Your Propane supplier should be able to answer this question correctly .