This is exactly b what I need to capture the thermal heal from my 24 *7 running Bitcoin miners and the residual heat can still be directed inside for winter outside in summer but water 24*7

Hi, does one simply use their HVAC fan? Can you regulate the temperature to deactivate the blower when the desired temperature is reached?

@centralboilerinc

5 жыл бұрын

Correct. Here is a wiring diagram that would operate the fan only unless the existing thermostat temperature was met. centralboiler.com/media/2586/adding-thermostat-central-boiler-outdoor-furnace-c120.pdf There are many other diagrams for different configurations on centralboiler.com.

@admarvicente9240

3 жыл бұрын

@@centralboilerinc how do u get the boiler to start for the hot water?

@centralboilerinc

3 жыл бұрын

When a side-arm heat exchanger is installed on your water heater, it will use the outdoor furnace system water to heat your domestic water in the water heater. The outdoor furnace system water is a closed loop and never mixes with your domestic water. The outdoor furnace monitors the system water and efficiently burns wood as needed to keep the system water at 185 degrees F. Here's a diagram that might help: centralboiler.com/media/2611/install-central-boiler-forced-air-system-c110.pdf

@jochimbenschneider1915

Жыл бұрын

I’m wanting to put a LP boiler in my attached garage and put the heating coil with the copper pipe running inside my HVAC aluminum trunk line just a few feet and then run my Trane Tam 7 seven air handler on the lowest fan speed and then of course that would give me hot water heat throughout my whole house. The people that are going to install the boiler said this can be done and they’re hunting for the right size heating coil. Has anybody done this before? I’ve seen pictures of it. We would use our air handler Seer 18 heat pump just for AC in summer. Our electricity since that Biden got in the office has skyrocketed in our area so propane is now cheaper than electric.

Can you put in a circular with closely spaced Ts to charge hot water to the HX , powered by the furnace blower switch relay ?

@centralboilerinc

4 жыл бұрын

If you are referring to the indoor wiring, please consult your local dealer or an electrician. We have many different wiring diagrams available on centralboiler.com/support

So in this set up, does the forced air system have the indoor burner also?

@centralboilerinc

5 жыл бұрын

If we understand your question correctly, the answer is yes. The forced air system contains your existing indoor propane/natural gas/fuel oil burner and the water-to-air heat exchanger is added. You can then have your existing burner set to kick on when you shut your outdoor furnace down or if you let your outdoor furnace run out of wood.

does the boiler water supply connect to the upper or lower NPT connection on the plenum coil?

@centralboilerinc

3 жыл бұрын

Correct, the supply line connects to the LOWER connection.

How does this restrict the airflow for the AC in summer?

@centralboilerinc

5 жыл бұрын

Restriction of air flow in the plenum is rare. For specific information on Central Boiler water-to-air heat exchangers, you can see the Hydronic Component Selection Guide that comes with each Central Boiler furnace. There is also information on measuring air flow in the Central Boiler Installation Guide.

I got the exchanger in. I have a electric furnace how do I make it so the heating element doesn't come on but reads the temp still and just controlls my fan.

@centralboilerinc

5 жыл бұрын

Here is a wiring diagram that would operate the fan only unless the existing thermostat temperature was met. centralboiler.com/media/2586/adding-thermostat-central-boiler-outdoor-furnace-c120.pdf There are many other diagrams for different configurations on centralboiler.com.

Can this be used with a 24/7 "ON" furnace fan, in a typical electric furnace? Is there any way to control the temp with a 24/7 "ON" fan?

@centralboilerinc

3 жыл бұрын

Yes. A zone valve connected to a thermostat would allow heat through the coil when needed and would stop the flow once the set point was reached.

I want to exchange all those heat going out via the furnace vent flue, to be captured outside (on the 4" vent to 6") the galvanized pipe or going thru an heat exchange like this and connect the exhaust back to vent out. Is this possible? I want to supply my water heater with captured hot water via this arrangement. ???

@centralboilerinc

3 жыл бұрын

The easiest way to use your Central Boiler outdoor furnace to heat domestic water is with a side-arm heat exchanger installed on your water heater. Here's an installation diagram: centralboiler.com/media/2611/install-central-boiler-forced-air-system-c110.pdf

In the summer when its hot and AC is needed, how does the furnace cool off the house when the Boiler coil is producing heat for hot water?

@centralboilerinc

4 жыл бұрын

During summer, the hot water can be redirected so that it does not go through the coil. Or, if desired, the outdoor furnace can be shut down and the water heater can be switched back to use gas or electric.

@amandadavis9726

Жыл бұрын

Seems like a bypass valve can be installed for that.

Why do you recommend putting the heat exchanger before the HVAC unit?

@centralboilerinc

4 жыл бұрын

If an air conditioning coil is located in the plenum, the heat exchanger should be mounted between the fan and the air conditioning coil so the heat exchanger will not freeze when the air conditioner is being used. Does that answer your question?

Could the coil be added to the return air side of the furnace?

@centralboilerinc

3 жыл бұрын

It is best to put the coil on the hot side before the "A" coil, but putting one on the cold return, although not ideal, happens quite often and works fine.

Does a heat exchanger have a direction of flow, does it matter what port is your inlet?

@centralboilerinc

Жыл бұрын

Yes, the direction of flow matters for the water-to-air heat exchanger. You can find details in your Furnace Installation Guide which is available on CentralBoiler.com/Support. Here's from page 18: For a single building water-to-air heat exchanger system with a domestic water heater, the direction of water flow must go from the hot outlet on the outdoor furnace to the lower side fitting of the domestic water heater exchanger, to the lower fitting of the heat exchanger in the plenum of the existing furnace, and then to the return port of the outdoor furnace.

Hi, I have carrier air handler which has ac coil all the way on the bottom and blower on the top so my only option is to put hot water coil in returns before the ac coil..Is that going to be fine? Or there’s any other solution?

@centralboilerinc

2 жыл бұрын

That sounds like a downdraft system. Is there room to put the heat exchanger between the a/c coil and the fan?

@sultaanjatt9013

2 жыл бұрын

I can only place hot water coil in the supply plenum (right on the top of my air handler)or the return side of air handler.

do these heat exchanger need to be taken out and cleaned for dust every year or two? ty

@centralboilerinc

2 жыл бұрын

No they do not. The indoor furnace air filter is sufficient.

@Glock2201

2 жыл бұрын

I find it is a good idea to blow it out every once in a while as dust can build up inside it.

I'm VERY new to all this, and I don't like the idea of using a water heat exchanger. Is there a system where a large tube (like 200mm - 8") is connected to an exterior furnace, and air is blown into the tube...to blow back out again after going through the heat of the furnace? Thanks.

@centralboilerinc

6 күн бұрын

Water holds heat and enables the heat to be transferred across a cold outdoor environment. This isn't possible with air.

What is the maximum air temperature you can get from this with 185 water temperature

@centralboilerinc

9 ай бұрын

Talk to your local dealer and ask for a Hydronic Component Selection Guide. It has charts for that. With 1,000 cfm air flow through the exchanger, entering air temperature of 60 degrees F, and the 185 degree F water flows at a rate of 7 gpm, the heated air temperature will be about 128.

The more the fan is on, the more wood you burn. You can watch the water temp fall within seconds of activating the fan. Which does what? Open the draft. Which does what? Burn more wood. Plentum systems are by far the least efficient method of keeping comfy. In floor heat cement installed over 2" foam with a vapor barrier is the answer to both efficiency and comfort. The next best option is baseboard. But if you like cutting 25 pickup truckloads of wood per season, by all means, use the plentum heat exchanger. It's your funeral.

@centralboilerinc

2 жыл бұрын

Plenum heat is the most used and most popular heat delivery system throughout the US, regardless if from an outdoor wood furnace, propane, electric or oil. It always comes down to the BTU required for the building being heated. A heavy heat load will draw water temps down faster requiring more wood burned to replace the required BTU. A well insulated low heat draw house will allow the outdoor furnace to rest for much longer periods of time, therefore burning less wood. In NW Minnesota, I burn just 5 ½ - 6 cord of wood per heating season in my Central Boiler Classic Edge through a forced air plenum coil. While floor heat is a nice warm even heat, keep in mind if you live in a climate where nights and mornings are cool but daytime hours get warm, that floor heat mass may continue to emit unwanted radiant heat and can make your home warmer than you would like. Also, if you want central air conditioning, you double your expense by needing to install ductwork for the AC, plus the cost of the in floor system install expense on new home builds.

How long are these good for ?

@centralboilerinc

3 жыл бұрын

The heat exchanger in the plenum should last a very long time as long as it is installed correctly.

How's the wiring diagram for that?

@centralboilerinc

3 жыл бұрын

Here is a standard wiring diagram. centralboiler.com/media/2586/adding-thermostat-central-boiler-outdoor-furnace-c120.pdf Other diagrams are available here: centralboiler.com/explore/furnace-installation/

Where can I buy the replacement at?

@centralboilerinc

2 жыл бұрын

Contact your dealer for parts and accessories. centralboiler.com/dealer-locator/

How much temp do you lose in the exchanger

@centralboilerinc

5 жыл бұрын

It varies, but generally only loses 20 degrees or less.

Hacks !!!!

@johnsayman2271

3 жыл бұрын

Hell ya