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WHN055 44,000 BTU Output Knight High Efficiency Boiler w/ Fire Tube Heat Exchanger (Wall Mount)
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WHN055 has been discontinued
Discontinued July 21, 2017
This product was discontinued because the part number was changed by the manufacturer. No modifications were made to the replacement product.
MANUALS (10)
This item replaces: WBN051, WBN050
Schematic Feature!
Replacement Parts
Direct Replacement:
44,000 BTU Output Knight High Efficiency Boiler w/ Fire Tube Heat Exchanger (Wall Mount) (NG)
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Get it Thu, Jul 23 - Mon, Aug 24
Product Highlights
–
Propane, Natural Gas
Stainless Steel, Direct Vent, PVC, CPVC, Polypropylene
Hydronic (Water)
55000 BTUs
33.25" Height
18-1/2" Width
Description
–
Heating equipment must be installed, commissioned, and serviced by a licensed and qualified professional in accordance with manufacturer instructions, applicable codes, and industry standards. Manufacturers do not accept warranty or technical support requests from homeowners or unlicensed individuals. All warranty and technical inquiries must be initiated by the licensed professional responsible for the installation.
Please Note: This product ships as NG as standard and includes an LP Conversion Kit
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
Please Note: This product ships as NG as standard and includes an LP Conversion Kit
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
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| Application: | Heating |
|---|---|
| Fuel Type: | Propane Natural Gas |
| Efficiency: | 95% |
| System Type: | Hydronic (Water) |
| Features: | Wall Mounted EI/Spark Ignition Direct Vent Condensing |
| Vent Size: | 2" |
| Vent Type: | Stainless Steel Direct Vent PVC CPVC Polypropylene |
| BTU Input: | 55000 |
| DOE Rating: | 51000 |
| IBR Rating: | 44000 |
| Water Connection: | 1" |
| Gas Connection: | 1/2" |
| Boiler Type: | High Efficiency |
| Height (Inches): | 33.25" |
| Width (Inches): | 18-1/2" |
| Depth (Inches): | 16" |
| Weight (lbs): | 139 lbs |
Questions?
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Brand
Fuel Type
Efficiency
System Type
Features
Vent Size
CURRENT ITEM
Propane
Natural Gas
Natural Gas
95%
Hydronic (Water)
Wall Mounted
EI/Spark Ignition
Direct Vent
Condensing
EI/Spark Ignition
Direct Vent
Condensing
2"
You May Also Need
Knight WHN055 (NG)
Replacement Parts
SKU: WHN055
Brand: Lochinvar
Search Parts:
SEARCH PARTS
Replacement Part, SKU
100150372
Sorry, we don't currently sell this item. Request This Item
Jacket, Right Side Assembly
100149903
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Pressure Switch
100278107
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Jacket, Front Door Assembly
100149696
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Condensate Trap Assembly
MSC30020
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Inlet Water Pipe 1"
TUB20009
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Outlet Water Pipe 1"
TUB30001
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Jacket, Left Side
100150371
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Product Reviews
5 out of 2 reviews
100% would recommend this product
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4 star
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Showing 1-2 of 2 reviews
First condensing boiler - why did i wait!
First off i was able to install this 100% without help. It is not all that heavy, instructions were clear and concise. One thing i missed and bought the wrong part was the low cut off, its built into the boiler by checking the difference in input/output water temp so i didnt really require it. if you do require one(due to local code) you have to get the one that is from Lochinvar but its pricey.. to my surprise the 44k btu is more than enough for my 3 floors(2100 sqft) (4 zones). When i did the heat loss calc i was at 35kBTU requirement, dont oversize or you will short cycle.. I am running it with a Rehau Raupanel setup which is working beyond my expectations but not in scope for this review. I also did the DWH product from Lochinvar as well, the systems are integrated so it just made sense for my install. Only other item i can suggest is make sure you have a drain plan for the condensate, my boiler location was not great for this but i was restricted to where it could go.
Gene
Bayonne, NJ
11 years ago
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Quality from door to door
I am using boiler as a back-up to wood burning system for radiant heat and DHW. I am most impressed by professionalism of Supply House. Boiler was packaged in wood crate and arrived in perfect condition. Supply House stands behind their products. Part of my overall order was missing and they re-shipped it at no cost with out question. I like boiler for many reasons to include flexible venting options and simple controls.
gg
Tulsa OK
12 years ago
Verified Buyer
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Product Q&A
4 Questions4 Questions
Q: The model number for this boiler is WHN056 but much of the literature refers to WHN055. What is the differerence between the WHN056 and the now discontinued WHN055? Are all items compatible between both?
Asked by Eric 8 years ago
Add your answer
Verified Reply- Eric, The WHN056 is the Direct Replacement for the WHN055.
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Q: Does this boiler come with everything needed for propane conversion?
Asked by Roy 11 years ago
Add your answer
Verified Reply- Supplyhouse StaffNo, it only comes equipped with NG you would require http://www.supplyhouse.com/Lochinvar-LPK30005-LP-Conversion-Kit-for-WHN055 to be purchased to convert from NG to LP
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Q: Does this boiler get shipped with the correct condensate trap?
Asked by Harv 11 years ago
Add your answer
Verified Reply- Supplyhouse StaffYes, this model does come with the the correct condensate trap
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Verified Reply- SupplyHouse StaffYes, the condensate trap will be included with this.
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Q: Does the boiler come with the pump.
Asked by Peter 12 years ago
Add your answer
Verified Reply- SupplyHouse StaffYes, this model kit includes a Grundfos UPS15-58FC pump.
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