125,000 BTU Output Knight High Efficiency Boiler w/ Fire Tube Heat Exchanger (Wall Mount) Zoom

125,000 BTU Output Knight High Efficiency Boiler w/ Fire Tube Heat Exchanger (Wall Mount)

SKU:WHN155

Brand: Lochinvar

Lochinvar
Qty Price
$3,969.95
/ each
In Stock! Ships in 24-48 Hours
(4 Available)
0

Resources

Specs

Fuel Type: Natural Gas
Efficiency:
?
95%
System Type: Hydronic (Water)
Features: Direct Vent
Condensing
EI/Spark Ignition
Wall Mounted
Vent Size: 3"
Vent Type: Stainless Steel
CPVC
PVC
Polypropylene
Direct Vent
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"

Description for Lochinvar WHN155

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.

PLEASE NOTE: The product weighs 166 lbs. and may require the use of a
lift gate.
If you do require a lift gate at your delivery, you'll have the option to add this FREE of charge when you checkout.

125,000 BTU Output Knight High Efficiency Boiler w/ Fire Tube Heat Exchanger (Wall Mount)

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5 Questions | 5 Answers
Displaying questions 1-5
  • 125,000 BTU Output Knight High Efficiency Boiler w/ Fire Tube Heat Exchanger (Wall Mount)

    Q:

    Can the units be ordered propane ready?
    Asked on 9/5/2014 by p from United States

    1 answer

    • CUSTOMER CARE

      A:

      No, 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.

      Answered on 9/8/2014 by SupplyHouse Staff from NY
  • 125,000 BTU Output Knight High Efficiency Boiler w/ Fire Tube Heat Exchanger (Wall Mount)

    Q:

    Does this come with a manufacturer warrenty
    Asked on 11/5/2012 by Lisa from Albuquerque

    1 answer

    • CUSTOMER CARE

      A:

      Yes, we honor the manufacturer's warranty.

      Answered on 11/7/2012 by PexSupply Staff from NY
  • 125,000 BTU Output Knight High Efficiency Boiler w/ Fire Tube Heat Exchanger (Wall Mount)

    Q:

    Can this system be used in combination hydronic (std baseboard) and radiant systems?
    Asked on 8/8/2012 by Leon from Massachusetts

    1 answer

    • CUSTOMER CARE

      A:

      It 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.

      Answered on 8/29/2012 by PexSupply Staff from NY
  • 125,000 BTU Output Knight High Efficiency Boiler w/ Fire Tube Heat Exchanger (Wall Mount)

    Q:

    My house is 2000 sq feet in size, is 120,000 BTU boiler sufficient for the house?
    Asked on 8/2/2012 by Theo from New York

    1 answer

    • CUSTOMER CARE

      A:

      120,000 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.

      Answered on 8/2/2012 by PexSupply Staff from NY
  • 125,000 BTU Output Knight High Efficiency Boiler w/ Fire Tube Heat Exchanger (Wall Mount)

    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 on 6/8/2012 by jeff from spooner WI 54801

    1 answer

    • CUSTOMER CARE

      A:

      If 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.

      Answered on 6/12/2012 by PexSupply Staff from NY
Displaying questions 1-5

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