Flushing The System - Central Boiler Classic CL 4030 Owner's Manual

Draining Treated System Water
MolyArmor 350 is composed of common
materials. Molybdenum compounds
characterized as nontoxic in US Public
Health Bulletin 293, by the Federal
Hazardous Substances Labeling Act,
and by the Occupational Safety and
Health Act. However, in keeping with
good safety and environmental practices,
dispose furnace water in accordance with
federal, state and local regulation. Unless
regulation prohibits, you may drain the
outdoor furnace to a home septic system.
If doing so, however, be careful not to
overflow the septic system.
Do not drain the outdoor furnace in such
a manner that the drain water could in
any way contact surface water, stream,
river, estuary (where a river meets a
sea), lake, pond, ocean or other types of
waters.
Do not drain to any location within 50
feet (15 meters) of any water well.

Flushing the System

If the system water is brown or orange, it is an indication that the corrosion
inhibitor level has not been maintained correctly and corrosion is present in
the water jacket. Sludge Conditioner (p/n 166) can be used by circulating the
recommended amount through the furnace for one week to help clean some of
the corrosion from inside the water jacket before flushing, draining and refilling
with water and the correct amount of MolyArmor 350.
NOTE: Use one unit of Sludge Conditioner per 200 gallons of system water.
1. De-energize the pump(s) and close the supply and return valves on the
outdoor furnace. Remove the inspection panel and insulation covering the
drain to gain access to the drain valve. Remove the cap and connect a hose
to the drain.
2. Open the drain to drain the system; then flush the top of the firebox and
bottom of the water jacket beneath the firebox using a wand placed in the
vent.
Completely clean out the firebox before draining water from the outdoor furnace.
Drain Location
Flush top of firebox and bottom of water jacket
beneath firebox using wand placed in vent.
3. Close the drain valve securely and replace the cap on drain after flushing
the outdoor furnace.
4. Add recommended amount of MolyArmor 350.
5. Fill the outdoor furnace following the procedure in Finalizing the
Installation in the Installation Guide. Start the pump(s) and bring the
water temperature up to operating temperature (185˚F) for 24 hours with
the system circulating to thoroughly mix the MolyArmor 350.
CLASSIC OUTDOOR FURNACE • OWNER'S MANUAL
CAUTION
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