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Williamson-Thermoflo GWC-175 - 161K BTU - 91.0% AFUE - Hot Water Gas Boiler - Direct Vent
Model:
GWC-175-N-T-S2
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Recommended Accessories
Expert Recommended Accessories
Selected by Ken, our Expert
Required Accessories
9
These accessories are required to properly setup/install this product.
Optional Accessories
10
Features
- High Efficiency
- With an AFUE percentage at or above 91 percent there is no doubt that the boiler will provide you with high efficiency, saving you money on heating costs.
- Factory Tested
- GWC boilers are factory tested, ensuring reliability and properly functioning equipment.
- Secondary Heat Exchanger
- A stainless steel heat exchanger collects heat from the flue gasses, maintaining boiler efficiency.
- Inferred Heat Program
- GWC is designed with an inferred heat program which provides automatic adjustment of the boiler water temperature to match heating demands.
- Multiple Venting Options
- Multiple venting setups for both PVC or stainless steel provide you with many options for venting your boiler.
- Product Includes
- Taco 007 Circulator Pump
"Uncover warm possibilities" with Williamson-Thermoflo's GWC Gas Water Condensing boiler. The highly efficient GWC-175-N-T-S2 pumps out 175,000 BTUs with an AFUE (annual fuel utilization efficiency) rating of 91.0 percent. Not only is the GWC efficient, but it is also versatile with several PVC or stainless steel venting options that can be used. This factory-packaged boiler has many features; like a multiple pass heat exchanger with a secondary stainless steel condensing heat exchanger, control module with indicator lights, hot surface ignition system, and an insulated heavy-gauge steel jacket. The GWC also has an inferred heat program that provides automatic adjustment of the water temperature to match the needs for your residence or office. It is also factory tested, meaning that you can rest assured knowing that you will receive a boiler that you can count on, year after warm year.
Specifications
GWC-175-N-T-S2
General Information
Product Line
GWC
Medium
Medium
Medium refers to the substance that carries heat through the heating system. Systems are either designed to use either Hot Water or Steam as a medium, and components are usually specific to one or the other.
Hot Water
Heat Exchanger Material
Cast Iron
Fuel Type
Fuel Type
To create heat, some form of fuel is required. Fuel Type specifies what the product uses as an input to create heat.
Natural Gas
Combustion Type
Combustion Type
Condensing appliances use leftover thermal energy from combustion gases to heat water in a secondary heat exchanger, resulting in higher efficiency and lower exhaust temperature.
Condensing
Vent Type
Vent Type
Products that use combustion (burning) of fuel to create heat also create potentially dangerous gasses that need to be exhausted (AKA "Vented"). Depending on the product, venting can be done via a chimney, through a side wall, or use a second vent to provide fresh air to the appliance.
Direct Vent
DHW Production
DHW Production
DHW (Domestic Hot Water) is potable water for uses other than space heat. Some boilers are able to provide DHW "out of the box", while others can do so with the purchase of optional accessories.
No
Modulating/Staging
Modulating/Staging
Stages are unique speeds or levels that equipment can operate at. More stages allow for better fine-tuned control of output, which improves comfort and efficiency. Modulating equipment can operate across a range of levels, giving the highest level of fine-tuned control. Learn More
Single Stage
Mount Type
Floor
Minimum Altitude
0 Feet
Maximum Altitude
5500 Feet
Includes Pump
Yes
Assembly Type
Packaged
Performance
AFUE
AFUE
AFUE (Annual Fuel Utilization Efficiency) measures the efficiency of combustion equipment over the entire heating season, and is calculated by dividing the amount of energy that is actually heating your home by the total energy contained in the fuel used by the boiler/furnace. Learn More
91 %
Maximum Input Capacity
Maximum Input Capacity
The Maximum Input Capacity describes how quickly the appliance will use fuel when delivering it's maximum capacity. The units may change depending on the fuel being used.
175000 BTU
DOE Heating Capacity
DOE Heating Capacity
Also referred to as Gross Output, this is the output of a boiler after accounting for combustion efficiency. We recommend sizing hot water boilers based on the DOE Heating Capacity.
161000 BTU
Net I=B=R Capacity
Net I=B=R Capacity
I=B=R, also referred to as Net Output or AHRI Capacity, is the rated heat output of a boiler after accounting for combustion efficiency, piping loss, and an extra pickup factor. We recommend sizing steam boilers based on the I=B=R rating.
140000 BTU
Ultra Low NOx Emissions
Ultra Low NOx Emissions
NOx is a byproduct of the combustion process, and it's output is regulated in some jurisdictions. Many regulators mirror SCAQMD rules, which regulate air quality for some parts of Southern California. Ultra Low NOx appliances emit less than 10-14 ng/J (nanogram per Joule) of NOx. Learn More
No
Electrical Data
Phase
1
Frequency
60 Hz
Dimensions
Flue Connection Size
3 Inches
Gas Connection Size
1/2 Inch
Supply Connection
1 Inch
Return Connection
1 Inch
Product Height
30 3/4 Inches
Product Width
24 5/8 Inches
Product Depth
37 3/4 Inches
Product Weight
464 Pounds
Shipping Weight
474 Pounds
Warranty Information
Parts Warranty
Parts Warranty
A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
2 Years
Heat Exchanger Warranty
20 Years
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Williamson-Thermoflo GWC-175 - 161K BTU - 91.0% AFUE - Hot Water Gas Boiler - Direct Vent
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