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125,000 BTU Output Knight High Efficiency Boiler w/ Fire Tube Heat Exchanger (Wall Mount) (NG)
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MANUALS (3)
Replacement Parts
Product Highlights
Description
Please Note: This product ships as NG as standard. An LP conversion kit must be purchased separately.
The KNIGHT® Wall Mount, engineered with Lochinvar's exclusive SMART SYSTEM control and an array of other innovative features is far ahead of any heating boiler in its class. It promises and delivers ultimate ease of installation and maintenance. With up to 99% thermal efficiency, low-NOx emissions and a fully modulating burner, it is the best "green choice" for today's environmentally focused market.
Features
- Advanced Negative Regulation Technology:
KNIGHT safely and reliably operates with supply gas pressure as low as 4 inches water column. Negative Regulation (Neg/Reg) technology automatically adjusts fan speed to ensure the correct volume and mix of fuel and air throughout the firing range. - Fire Tube Design:
This fully welded ASME Certified stainless steel heat exchanger uses oval shaped tubes to pass heat from the products of combustion into the water stored in the vessel. To facilitate heat transfer the tubes are manufactured with dimples to slow the flue products and extract available latent energy. With a fire tube design the flue products are inside tapered passage ways and the water passed through a vessel. Since the flue products pass through tubes and the water is circulated through a larger diameter vessel a fire tube design allows for minimal head pressure loss through the boiler which allows the boiler to be installed easily into various hydronic applications. - Water-Backed Combustion Chamber:
An outstanding feature of the fire tube design is a water backed combustion chamber. By having the combustion chamber surrounded by water the Knight Wall Mount has more heating surface area. This larger heating surface area allows for efficiencies up to 99%. - Fully Modulating Burner:
The SMART SYSTEM allows fully modulating combustion with 5:1 turndown. The burner can fire as low as 20% of maximum input and modulates the firing rate up to 100% as demand increases. The burner is a single stainless steel assembly covered with woven steel mesh and fires in a 360° pattern along the entire length of the burner. This allows the compact KNIGHT to exceed the modulation capacities of units with larger multiple burners. - Direct Venting up to 100 ft:
KNIGHT offers 5 venting options and tremendous flexibility for placement of units within the building, because it permits direct-vent air intake and exhaust runs up to 100 equivalent feet using either PVC, CPVC or AL29-4C stainless steel vent pipe. A sidewall vent termination kit is standard equipment with every KNIGHT boiler.
Specs
| Fuel Type: | Natural Gas |
|---|---|
| Efficiency: | 95% |
| System Type: | Hydronic (Water) |
| Features: | Direct Vent EI/Spark Ignition Condensing Wall Mounted |
| Vent Size: | 3" |
| Vent Type: | Direct Vent CPVC Polypropylene Stainless Steel PVC |
| BTU Input: | 155000 |
| DOE Rating: | 144000 |
| IBR Rating: | 125000 |
| Water Connection: | 1" |
| Gas Connection: | 1/2" |
| Boiler Type: | High Efficiency |
| Height (Inches): | 33.25" |
| Width (Inches): | 18-1/2" |
| Depth (Inches): | 19" |
Questions?
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Product Q&A
6 QuestionsQ: does unit com with circulator pump
Asked by don 10 years ago
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Verified Reply- SupplyHouse StaffThese do not come with a pump: http://s3.supplyhouse.com/product_files/WHN155-Pump.pdf is their guide for choosing one. Thanks,
Q: Can the units be ordered propane ready?
Asked by p 12 years ago
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Verified Reply- SupplyHouse StaffNo, these units come ready for natural gas. In order to operate on LP gas, an orifice must be added upon installation. For assistance in selecting the correct LP orifice please contact customer service.
Q: Does this come with a manufacturer warrenty
Asked by Lisa 14 years ago
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Verified Reply- PexSupply StaffYes, we honor the manufacturer's warranty.
Q: Can this system be used in combination hydronic (std baseboard) and radiant systems?
Asked by Leon 14 years ago
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Verified Reply- PexSupply StaffIt can. Since it's a high efficiency condensing boiler, you'd probably be best off running low-temperature baseboard along with the radiant. Radiant always must be low-temperature (except for some suspended joist applications) and condensing boilers can only approach peak efficiency at low return water temperatures. In this context, "low" temperature means below 140°F.
Q: My house is 2000 sq feet in size, is 120,000 BTU boiler sufficient for the house?
Asked by Theo 14 years ago
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Verified Reply- PexSupply Staff120,000 BTUs should be more than sufficient for a 2,000 square foot house. Most homes in the New York area require 30-35 BTUs per square foot. Newer, tightly-insulated homes may only need 15-20 BTUs per square foot, while older or poorly-insulated homes could need over 50 BTUs per square foot. Using A 120,000 BTU boiler would provide 60 BTUs per square foot in a 2,000 square foot home.
Q: i have old red 3/4 in non ox barrier pex mounted under 1 1/2in wood floor alum. reflector, 1/2in reflect foam. is this ok? cannot find installer that will respond to my requests. spooner wi 54801
Asked by jeff 14 years ago
Add your answer
Verified Reply- PexSupply StaffIf you're using non-oxygen barrier PEX, you should make sure to use bronze or stainless steel circulator pumps and isolate your boiler from the heating loop. Oxygen from the air can penetrate the non-barrier tubing and cause any ferrous metals in the system to rust.