5HeatMaster
SS
C Series Furnace Operating Manual
C
WATER TREATMENT AND TESTING
To qualify for warranty, water must be tested a minimum of
once per year and water treatment added when necessary.
To take a water sample:
• Locate your water sample bottle, mailing carton, and
mailing label provided to you by your dealer.
• Open the boiler drain located at the bottom of the rear of
the furnace for 10-15 seconds or until the water runs clear.
CAUTION: Water is hot! Use extreme care or a bucket to
run water into and let cool before collecting a sample.
• Fill one of the test bottles at least 1/2 to 2/3 full.
• Fill out the mailing label provided with the test bottle
completely, including your email address, the model
number, and the serial number of your furnace. Make sure
to note if the furnace water contains any antifreeze or
additional chemicals.
• Attach the top part of the label to the sample bottle and
the bottom part to the outside of the mailing tube. Place
the bottle in the tube.
• Mail to our testing lab. Results can take up to 4 weeks to
receive and up to 8 weeks if no email address is on hand at
HeatMaster
SS
. You will receive a water test report outlining
what must be done (if anything). If any action is necessary,
take another sample and mail it to our test lab again to
verify the recommended changes have been made.
Add the water treatment through the ll pipe located at the top
of the furnace when initially lling the furnace with water or
after testing, if needed. Ensure that all drains are closed. It’s
recommended that water treatment is added at a 1:200 ratio
when initially lling the furnace, and added accordingly based
on the water test results. Additional treatment may have to be
added for water with more severe properties or for systems
with more chemically demanding requirements.
WATER TREATMENT POLICY
Conductivity: 100 - 4000 ppm
pH: 8.5 - 10.5
Nitrites: no less than 730 ppm
TEST PARAMETERS AND WHAT THEY MEAN
Conductivity - Conductivity is a measurement of minerals
in your furnace water. While it’s common to have minerals in
water, excess minerals can cause many problems in hydronic
systems including scaling and corrosion.
pH - pH is a measurement of alkalinity (hard or soft water). For
outdoor furnace water and the water treatment used in outdoor
furnaces, it’s better to have your water a little harder than softer
(recommended pH range is 8.5-10) as the active ingredients in the
water treatment neutralize harder water easier than softer water.
Nitrites - Nitrates tested for are a measurement of how much
water treatment is in the water. Nitrates measured are active units
of water treatment available to neutralize harmful elements in your
furnace water. Nitrates also act to neutralize harmful bacteria that
may build up in the furnace water over time.
Propylene Glycol - Inhibited glycol provides anti-corrosion
elements and freeze protection for outdoor furnaces and is
compatible with Outdoor Furnace Water Treatment. Because
outdoor furnaces are open to the atmosphere systems and will
have fresh water added occasionally, oxygen is always entering the
system and will break down the glycol over time to create glycolic
acid which will harm your furnace system. When this happens you
will be required to drain and ush your furnace system.
It’s always suggested to use 100% virgin propylene glycol instead
of recycled glycol as it will break down much sooner and create
glycolic acid.
RECOMMENDED OPERATING LEVELS