Condensate neutralizer: Drain materials subject to corrosion must be protected by acid
neutralization. Warning - Risk of injury. Tank fluid can be highly acidic. Do not use hands
to stir material. Refer to the neutralization instructions of the manufacturer. Access to the
discharge, before the drain, is necessary for proper maintenance in order to check the
effectiveness of the neutralizing agent. A simple pH test should be performed annually to
ensure neutralizing agent is still effective. If the pH falls below 6.5 the neutralizing
material should be replaced. The agent (limestone chips with a minimum calcium
carbonate content of 85%) can be purchased from a local supplier.
¾" FPT inlet and outlet. Unions for ease of maintenance (ships with shown model NT-1S,
available from plumbing supply houses).
To drain. Confirm slope. Slope the condensate hose and drain piping toward the drain
and secure to prevent accidental disassembly.
Warning
Water quality has a significant impact on the lifetime and performance of a boiler's heat
exchanger.
Improperly prepared water in a heating circuit may cause damage to the heat exchanger
through fouling or corrosion. Repeated or uncontrolled water fills will increase the
potential for damage.
High levels of dissolved solids or minerals may precipitate out of the fluid onto the hottest
part of the heat exchanger, impairing heat transfer and resulting in overheating and
premature failure. The amount of solids that may form on the heat exchanger will depend
on the degree of hardness and the total water volume in the system. A high water volume
system with a low hardness count may cause as much damage as a system with less
volume and higher hardness, so it is recommended to treat water so as to reduce
dissolved solids to the minimum 10 ppm, and to no more than 30 ppm. Water chemistry
allowable limits are as follows:
TDS 0.6 to 1.75 grains/ gal (10 to 30 ppm)
Acidity pH is to be between 6.6 and 8.5
Chloride is to be less than 125 mg/l
Iron is to be less than 0.3 mg/l
Cu less than 0.1 mg/l
Conductivity is to be less than 400μS/cm at 77°F (25°C)
Important: Ensure that these limits are acceptable for the other water-side components
in the system.
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