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Ultra 80 - 62,000 BTU Output High Efficiency Boiler (Nat Gas)
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MANUALS (8)
Replacement Parts
Product Highlights
Description
**Series 3 Ultra Boiler
Key Features
- Gas fired water boiler with cast aluminum heat exchanger
- Venturi mixing body mixes air and gas providing higher efficiency
- Designed to operate in low temperature condensing applications
- Outdoor reset and domestic hot water priority standard
- Negative regulated gas valve precisely delivers gas to the boiler
- Electronic control module automatically adjusts blower speed and gas flow rate in response to environment
- Modulates with 5 to 1 turndown ratio
- Variable speed motor matches combustion output to heating needs
- High grade stainless steel burner features quiet operation, high efficiency, and cleaner combustion for low NOx applications.
Hydro-Core Near Boiler Installation Options::
- FT-144 1" Ultra Component Kit
Specs
| Width (Inches): | 22-13/16" |
|---|---|
| Fuel Type: | Natural Gas |
| Vent Type: | Direct Vent PVC AL29-4C |
| Boiler Type: | High Efficiency |
| Color: | Slate Gray |
| Efficiency: | 95.2% |
| System Type: | Hydronic (Water) |
| Features: | Condensing EI/Spark Ignition Direct Vent |
| Vent Size: | 3" |
| Water Connection: | 1" |
| Gas Connection: | 1/2" |
| BTU Input: | 80000 |
| BTU Output: | 62000 |
| Warranty: | 15 Year Limited (Heat Exchanger), 1 Year (Parts) |
Questions?
Ultra 80 NG (S3)
Replacement Parts
SKU: 383-500-700
Brand: Weil-McLain
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Product Reviews
2 years in
unit was already 4 years old when it arrived
Super Quiet
Product Q&A
15 QuestionsQ: I have 1660 sq house, I going to used the 80. My house is baseboard with three zones one each floor. In the manual the spec. are 1 inch feed and return, all baseboard are 3/4 inch. will this cause a problem for me. Thank you
Asked by joe, GC 13 years ago
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Verified Reply- PexSupply StaffThis wouldn't cause a problem. Keep in mind also that this boiler requires primary/secondary piping, so it would be possible to have 1" lines on the boiler loop with 3/4" lines feeding the baseboards.
Q: Will this boiler works in condensing mode if I use it with cast iron radiators in a single loop pipe or I have to switch to two loops pipe to increase dropping of the water temperature in the return pipe? Is it possible that the integrated boiler control will adjust the speed of circulating pump to achieve condensing mode ( less than 120F) for single loop pipe so this way I will not have to switch to two loops??
Asked by Beekmansup 14 years ago
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Maybe? Keep your project simple. If the federal rebate is still in effect; buy the condensing boiler. If not--don't waste your money. Hydronics is not an exact science yet. I will be writing a book on hydronic installation in the near future. It will be simple and geared to the DIY. The outdoor boiler reset, and primary piping are your best friends if you decide to go with a condensing boiler. The integrated boiler control is a switch. It will not adjust the speed of the circ.
I don't know why it would not work that way
Q: I am thinking about eliminating my oil boiler and replacing it with propane (no gas available). Can I use a gas boiler and convert it to propane. Are the propane boilers just converted gas boilers.
Asked by Ed 14 years ago
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Verified Reply- PexSupply StaffIn Weil-McLain's Ultra series, only the Ultra 80 can be ordered as either NG or LP. All other models come configured for NG and must be converted to LP in the field. They include all necessary parts to do this.
Q: My house is 40 year old with baseboard heating what is the best water temp to set the boiler at sq ft is about 1300
Asked by 14 years ago
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Verified Reply- PexSupply Staff180°F is probably the most common setting, but this can be modified depending on the application.
Q: What clearances are required for mounting, especially next to a fuse box?
Asked by Joe 14 years ago
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Verified Reply- PexSupply StaffPlease refer to the manual (page 5).
Q: Hi, Why no one is suggesting to get a real Manual J calculation from professional energy experts when people are asking about the size of the unit they need? Nobody should buy any kind of heating unit without an accurate heat load calculation on their house. I have an Ultra II 80 gas boiler with 6 fan coil units (10,000 BTU each) since 4 years, my house is 3200 sq.ft., and the unit is still more than enough for heat. My system temperature setting is on 130F because I try to keep the returning water bellow 120F, so the unit can condensate better also increasing the efficiency. You can't use the "rule of thumb" method anymore. The energy is just cost too much. I also think your unit sizing calculator needs some upgrade, it is out of range. I don't understand why I need a 66,000 BTU unit if I'm using low temperature radiant heat, and it jumps up to 115,000 BTU if my heating is baseboard or fan-coil at the same house settings? How it is possible?
Asked by Szabi 15 years ago
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Verified Reply- PexSupply StaffRadiant heating requires significantly lower water temperatures in order to achieve the same room temperatures (meaning less powerful boilers). A manual J (heat loss calculation) is always recommended. Any BTU calculator should only be used as a first step or to gauge a ballpark estimate.
Q: can any of these boilers work with anti-freeze solution for application in a bungalow that is not heated during part of the winter?
Asked by Manny 15 years ago
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Verified Reply- PexSupply StaffYes, you can use glycol with the boiler.
Q: what is the best temp of out going boilerwater temp for the best efenciey ? to make it condenstate ther is no water heater just in floor heat
Asked by 15 years ago
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Verified Reply- PexSupply StaffThe water temperature needs to be 130°F or lower in order to make the unit condense.
Q: Do they make boiler that will do both heat and hot water?
Asked by cooney 15 years ago
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Verified Reply- PexSupply StaffFor the Weil-McLain Ultra series, you will need to get an indirect water heater along with the boiler.
Q: Hi In some of the rooms where I don't use I set the thermostat to 40 degrees target temperature. The room gets heated to 55 degrees. Doesn't go below 55. Why?
Asked by Ralph 15 years ago
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Verified Reply- PexSupply StaffWe would suggest checking your thermostat settings as well as the low limit on the thermostat.