How do i add this f1 to steam boiler? can i add it through an air vent hold on a radiator? thanks

My boiler isn’t steam, it’s hot water. But the directions that I was given was to remove/drain all of the current water in the system completely after the boiler has cooled off. Then add the cleaner. Now what I did was to add a shark bite “T”and poured it into the system as I didn’t have another other place to put it in. Then I removed the “T” and replaced it with a coupler. But on a steam system I would think that you could add it to your radiator top vent and put it in then refill the system. After it’s refilled your going to run it if a few days. I’m doing mine a little longer, like 10 days. So during that time the chemical is going to move around and clean the system. Just make sure you turn off the boiler before you start doing any work on it. I hope that this helps

How many gallons will this treat?

My bottle says that it will treat up to 34 US gallons.

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🛠️ Keep your heating flawless—because your home deserves the best!

EASY 500 ML DOSE - Perfectly sized for hassle-free application—maintain your heating system like a pro.
ACID FREE FORMULA - Gentle yet powerful protection without harmful acids, ensuring system longevity and safety.
LIMESCALE BLOCKER - Stops damaging limescale formation to keep your heating system running smoothly and efficiently.
ULTIMATE SYSTEM SHIELD - Protects ferrous metals, copper, and aluminum from corrosion for lasting heating efficiency.
UNIVERSAL COMPATIBILITY - Works seamlessly with all boiler types, radiators, and pipework materials—no guesswork needed.

Fernox 56599 F1 Protector is a 500ml, acid-free additive designed to prevent corrosion and limescale in domestic central heating systems. Compatible with all metals and materials commonly used in boilers, radiators, and pipework, it ensures long-term system protection and efficiency.

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Product Dimensions	18.49 x 8.99 x 5.51 cm; 498.95 g
Item Weight	1.1 Pounds
Specific uses	Indoor use only
Item volume	500 Milliliters
Is mould resistant	Acid Free
Scent	Almond
Number of pieces	1
Batteries required	No
Included components	1 x Fernox 56599 F1 500 ml Protector

Fernox 56599 F1 500ml Protector

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