Remove Scale from Boilers and Heat Exchangers
CitriSurf® 77 is a citric acid based formula that safely and effectively removes limescale deposits caused by hard water as well as combustion chamber scale in heat exchangers and boilers. It is an easy to use spray on and rinse off product that comes with specific instructions for limescale removal and boiler/heat exchanger cleaning.
For Boilers and Heat Exchangers:
Be sure to follow all manufacturer's instructions. Do not apply CitriSurf to electrical wiring or other conductive material that is connected to electrical current without first turning off all electricity. CitriSurf is a water based conductive material and serious injury or death can result from electrical shock. Clean the combustion chamber and heat exchanger surface with a soft brush and/or rinse if necessary. Spray CitriSurf 77 on the surface of the heat exchanger and allow it to soak for 12-25 minutes. Respray as needed to keep the surface wet, removing any debris with a soft brush. After soaking, rinse the surface thoroughly with clean water and allow to completely air dry. Drying can be accelerated by use of a hot air blower like a hair dryer, or with a clean cloth. Repeat process if necessary to obtain desired results.
For Viessmann Boilers
Viessmann has approved CitriSurf 77 as an alternative product to CitriSurf 3050, which is specified in their manuals.
Also Cleans Limescale from Hard Water
Spray CitriSurf 77 on the item to be cleaned and allow it to soak for at least 5 minutes. Respray as necessary to keep the surface wet. After soaking, rinse thoroughly with clean water and allow to air dry. Drying can be accelerated by use of a hot air blower like a hair dryer, or with a clean cloth. Repeat process if necessary to obtain desired results.
Shipping Weight 2.0 lbs.
SDS sheet available upon request
CitriSurf is a registered trademark of Stellar Solutions, Inc., McHenry, IL US.
Q. Is this the same product as the CitriSurf 77 used to clean and passivate stainless steel?
A. Yes. This is the same product. In addition to passivating stainless steel, it is effective at removing limescale and cleaning heat exchangers. When purchased in the Boiler/Heat Exchanger and Limescale Cleaning package, specific instruction for scale removal and boiler cleaning are included.
Q. Are there other uses for CitriSurf 77?
A. Yes. It is also an effective Cleaner for Brass and Bronze.
Q. Are there any surfaces that CitriSurf is NOT compatible with?
A. CitriSurf will cause damage to the surfaces of concrete, carbon steel, zinc, and galvanized steel. Avoid exposure of these materials to CitriSurf and rinse immediately if there is an inadvertent spill onto these materials. CitriSurf can be used to clean carbon steel surfaces if care is taken to avoid overexposure, we recommend extra dilution and room temperature operation. PVC pipe and fittings made from copper, brass, or bronze are not recommended for long term use with CitriSurf.
Q. What is the coverage of one bottle?
A. Coverage is approximately 50 square feet.