
White Rodgers 21M51U-843 Universal 2-Stage Furnace Control Kit
Part/SKU: 21M51U-843
| Weight | 15 lbs |
|---|---|
| Condition | New |
| Manufacturer Part Number | 106259-02 |
| Brand | U.S. Boiler Company (Utica Boilers) |
$457.54
In stock — available to order.
Sold individually. Each quantity ordered is one unit. Kits are one complete kit; products sold by length use the stated length unit.
Available to order.
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US Boiler FastPipe™ Primary / Secondary Piping Manifold Kit – K2WT 150 & 180
The US Boiler FastPipe™ Primary / Secondary Piping Manifold Kit is a factory-assembled piping solution designed specifically for K2WT condensing boilers (sizes 150 & 180). This ready-made manifold allows contractors to complete under-boiler piping in minutes instead of hours, reducing labor time and ensuring a clean, professional installation.
The FastPipe system provides primary and secondary loop connections to the boiler, expansion tank, safety valve, drain valve, pressure gauge, and air separation components — all in a compact, installer-friendly layout.
Key Features & Benefits:
Genuine U.S. Boiler Company OEM FastPipe kit
Designed for K2WT 150 & 180 boilers
Factory-assembled for fast, consistent installation
Supports proper primary / secondary piping
Integrated connections for safety and system components
Applications:
Residential and light commercial hydronic systems
K2WT boiler installations and replacements
Time-saving HVAC installations
Manufacturer Part Number: 106259-02
System: FastPipe™
Brand: U.S. Boiler Company (Utica Boilers)
Always verify boiler model and size before installation.
This product, including but not limited to propane parts, accessories, fittings, hoses, valves, and regulators, must be installed and serviced by a licensed professional in accordance with all applicable local, state, and federal codes, regulations, and standards.
The seller assumes no responsibility for the installation, inspection, application, maintenance, or use of this product.
It is the sole responsibility of the buyer to ensure the product is appropriate for their intended application and that it is installed correctly by a qualified individual.
Improper installation, maintenance, or use of propane products may result in serious injury, death, fire, explosion, or property damage.
The buyer accepts all risks, liabilities, and potential consequences associated with the use of this product.
By purchasing this item, the buyer acknowledges that they have read, understood, and agreed to these terms and confirm that installation and use will be conducted by a properly licensed and qualified professional.
Match the manufacturer part number and equipment model to the listing. Check connection sizes, fuel type, pressure or capacity, voltage and dimensions where applicable. A similar appearance or part number alone does not confirm compatibility.
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Availability may include our inventory and supplier sources. Listed stock does not by itself confirm immediate dispatch. Ask us to confirm a ship date before ordering for time-sensitive work.
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