Joined on December 29, 2008
Last Post on August 20, 2014
@ July 4, 2014 7:55 AM in Getting into mod/con businessI'm in your market and could arrange for a nice sit down with Viessmann as soon as this upcoming week. I know that the VitoMobile will be touring your market the week of 7/14. Factory is in RI and all training is free. The next round of classed for Vitodens is at the end of the month. Just click on the link for registration and seminar schedule.
Viessmann is serviced in your market by a Factory Rep not a rep agency so your relationship is direct with the factory and the wholesaler. Generally, Viessmann isn't sold on the "sales pitch" but rather from the technical side. Its a system approach not just a boiler approach. Feel free to drop me an email if you'd like.
@ July 2, 2014 6:10 PM in New gas boiler sizingCan can vent the Vitodens Sidewall in 2" provided as Steam said, you meet all the vent requirements. Viessmann does not allow PVC venting so PolyProp is the most cost effective way to go. The cost is minimal when using 2".
The NCB-180 is only 150,000 btu/hr for domestic hot water. Generally incoming ground temp in the winter is 50 and you want a set point/target temp of 120 so:
150,000/ (70X500) = 4.28GPM. Will that be appropriate enough for your DHW needs?
The btu/hr output ratings on the Navien are for domestic hot water not heating. The on board pump for heating in the NCB can move roughly 5gpm so there needs to be some math done to make sure its adequate to handle your heating needs based off that heat loss. Navien prefers the use of the NCB-240 in the Northeast because of the heating loads, that unit is capable of providing a little more muscle as its 199,000 btu/hr for DHW and you could get 120,000 btu/hr heating out of it. But keep in mind that is not 120,000 btu/hr of 180 degree water.
Until someone does all the math we are all just giving basic information based on a scenario and past experience rather then specific to your project.
@ July 2, 2014 3:18 PM in New gas boiler sizingYou'd simply drop a 2" Duravent PolyPro Flex or Centrotherm InnoFlue Flex down the chimney. Fresh air can be take from the side or room dependent if you're able.
You can run an Indirect off all of them. Don't know what your DHW need is. You may be able to just add on the CombiPlus DHW unit to the Vitodens 100 and go if 3.5gpm satisfies your need.
You might even want to take a look at the Vitodens 222F while the cost of the unit is considerably more there is NO LABOR for the installation of the Indirect plus it has a lower bottom end at 19,000 btu/hr. Click on the link below...
@ July 2, 2014 9:07 AM in New gas boiler sizingJust looking for installers to throw work at. I would never recommend a Viessmann job to an installer that is not a Viessmann Partner unless he was becoming a Viessmann partner.
I'm looking for quality contractors that would be interested in the product line that want to differ themselves from their competition and embrace a product line that gives them a boiler that pretty much nobody in that market is offering. Its gives the opportunity to sell rather then sell against another price for the same boiler.
I have a branch in Brunswick.
@ July 1, 2014 9:52 PM in New gas boiler sizingIs not the rep. If I had a unit not working I'd fix it myself. Been dealing with them since they came to the US. Looking for installers in NJ that might be interested in the boiler line but haven't had the opportunity.
@ July 1, 2014 9:12 PM in New gas boiler sizingI'm looking to find forward thinking installers in NJ market that might be interested in taking a look at Viessmann.
@ July 1, 2014 8:08 PM in New gas boiler sizingYou're in NJ right? Where abouts? Curious...
@ July 1, 2014 3:27 PM in Converting Oil to GasToo and I'm totally right, not might be.
It is our job to inform the consumer with ALL THE INFORMATION not just the parts we want to. Its also not up to the contractor to make the decision for the customer.
I clearly said, a gas conversion burner would work quite well when installed and setup correctly did I not?
Why do contractors hide from telling the consumer the entire TRUTH? Maybe that little bit of extra honesty would get you that big thank you for watching out for me.
As for contractors are the brains, well for every 1 brain I can show you 20 that seem to have lost theirs.
@ July 1, 2014 12:16 PM in Converting Oil to GasI have a hard time grasping that Weil said it's ok to convert which is the total opposite of their stance in the installation manual. If true that would open them up to full liability if said conversation happened.
Will a conversion burner work. Yes and quite well when installed and set up properly.
Here's my issue and something that most contractors/installers seem to leave out of the picture and fail to inform the homeowner of.
1. Once you convert you have voided any warranty remaining on the boiler itself.
2. Seems like everyone forgets about the homeowners insurance company. God forbid something happen and since that boiler in now put into service in an unauthorized manner as per the installation manual, how does the home owners insurance feel about that?
Just two simple questions that should be asked by all contractors to the homeowner so that they can make the right decision as to or not to convert.
Again, conversion burners work very well and the issue is not about that, it's about the liability and providing the consumer the proper information to make the decision they feel is the right one.
@ July 1, 2014 11:56 AM in New gas boiler sizingAre you sure the price is too high or is that your budget is to low for a high efficiency system? I don't shop at a Mercedes dealership knowing my wallet only carries the affordability of a Ford or Chevy.
It is not the contractor's job to make the best affordable to you, it's up to you to get the best system you can for the budget you have.
You should be divulging that up front to potential bidders so that you're not wasting their time and they could then provide you a quote based on your budget. There is also nothing wrong with getting multiple quotes from the same contractor for multiple options and make your choice from there.
@ June 29, 2014 11:13 AM in Typical venting for high-efficiency wall-hung boilers?Centrotherm is nothing new. Been dealing with them for 4 years now. Just because
you've had an experience from the uninformed and what seems like suppliers that
are not keeping up with advances in the industry isn't the product or Centrotherms issue.
Here's where that additonal cost makes sense. I'm giving Mr and Mrs Homeowner a UL
Certified and tested venting product not a vent system that is installed with material that
moves waste into a sewer or septic system. Secondary Mr and Mrs Homeowner I'm
providing a venting system that carries a 10yr warranty.
@ June 18, 2014 3:48 PM in 95% Efficient Condensing Replacement BoilerThe on board pump can only move 5gpm across the Navien HX. So what has to change to get the btu/hr out of the boiler when not piped pri'/sec.....THE DELTA-T.. How many fin-tube and even cast iron systems you see out there running on a
120,000/500/5 = 48 Degree Delta-T... Zero, zippo, nodda!
Its not the boiler that is delivering the 120,000 btu/hr when piped primary secondary and you can take that to the bank!
@ June 14, 2014 3:29 PM in Typical venting for high-efficiency wall-hung boilers?Is the question that needs to be asked. Cause if you live in the 5 Boroughs of NYC come Sept 1, you cannot vent ANY piece of equipment with PVC regardless of what the install manual says.
There are also a few municipalities out in LI that already will not allow it. It's a slowly changing thing so I'd make sure that there are no changes being made to the building code in your, city, town or village.
@ May 21, 2014 7:38 PM in Help diagnosing hydro air problems....the internet is so vast but yet such a small place. The OP has a contractor, one of the best around in his market. Think I'll leave this one alone, we all have better things to do with our time.
@ May 21, 2014 6:41 PM in Help diagnosing hydro air problems....Probably too much pump. That's why I asked and you still haven't answered. What is the supply water temp leaving the zone and what is the return water temp coming back.
@ May 21, 2014 11:20 AM in Help diagnosing hydro air problems....Not on the job..
@ May 21, 2014 11:02 AM in Help diagnosing hydro air problems....Account for the indirect in a heat loss. It has nothing to do with the heating system, though there should be a priority zone control used so when it calls the heating zones shut down, tank gets satisfied with all the boilers muscle quickly and the heating zones are activated again.
If that A/H is only doing the 2nd floor then the pipe size to it is fine.
Yeah there is..Figure out pump head, and then look at the pumps curve.
@ May 21, 2014 10:51 AM in Help diagnosing hydro air problems....To my post Ice but last I checked
60,000/ (500 x 4) = 30 Degree Delta-T. I'd also make sure my aquastat was on the return, not on the supply and my fan speed was low. All is mute anyway without a proper heat loss..Pressure drop across the a/h is prob minimal 5' maybe..
If its just a straight shot from the boiler room to the attice best bet is to just run some 1" HePex and be done with it.
@ May 21, 2014 9:05 AM in Help diagnosing hydro air problems....To your question is in a heat loss and this. A btu is a btu. I can still get 60,000 btu/hr thru 3/4" pipe..
@ May 21, 2014 8:59 AM in Series pumps and my hydronic comedy of errorsWouldn't it make more sense to weigh the water in each loop? There are .92 gallons in 100 feet of 1/2" pex. Just saying, seems like a much easier way to get actual loops lengths.
@ May 12, 2014 8:15 AM in Heat Loss discrepancyForget any program for a minute and think about this. No matter radiant, forced air, baseboard, etc you cannot get around his simple math problem to calculate heat loss thru an out side panel. Air Exchange/Infiltration is the moving target.
(Ti-To)/R-Value = Btu/hr Sqft
Ti = Temp Indoor
To= Temp Outdoor
R-Value is self explanatory.
@ May 8, 2014 9:23 AM in Heat Loss discrepancyMethodology..What's in the wall? What type of windows, etc all go to infiltration. There is no way that this particular house needs 46 btu/hr sqft based on that 140K heat loss.
I just did a 9,000 sqft house, all radiant, total heat loss = 54K. Average conventional heat loss for a 3,000 sqft house R-19 Walls, R30- Attic, Low-E Windows is around 40K. I think Rich's number for his last project is much closer to what the heat loss of this house is then the original poster.