Water Chemistry - Weil-McLain Ultra Manual

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gas fired water boiler
Startup — fill the system
Add the correct amount of antifreeze
1. Determine the freezing temperature needed (to protect against
lowest likely temperature the system water will encounter).
2. Find the antifreeze concentration by volume needed for this tem-
perature from the antifreeze manufacturer's data.
3. Add up the volume (gallons) of all system piping and components,
including the expansion tank and boiler. Boiler water content is
listed on page 105. Remember to include expansion tank water
content.
4. Multiply this volume by the (percent) antifreeze needed to find the
number of gallons of antifreeze to add.
Check inhibitor concentration
1. Test the pH of a sample of system water at least annually. The pH
of the water mixture must be between 7.0 and 8.5.
2. If pH is outside this range, the inhibitor level may not be sufficient
to prevent corrosion. Drain system, flush thoroughly with fresh
water, and refill system with clean water.
Test glycol concentration at least annually. If concentra-
tion is low, add antifreeze or drain system and refill with
correct mixture.
DO NOT
3. exceed 50% by volume concentrate of antifreeze.
Recommended antifreeze
Antifreeze Source
ALPHI-11 Weil-McLain
500 Blaine Street
Michigan City, IN 46360-2388
Hydronic Agencies, Ltd.
15363 117 Ave.
Edmonton, AB T5M 3X4, Canada
Ph
Fx
Web
Aluminum-Safe Chemical Specialties, Inc.
Propylene Glycol
4800 N. Washington St. #E
Denver, CO 80216
Ph
Fx
e-mail
Rhogard Rhomar Water Management, Inc.
P. O. Box 229
Springfield, MO 65801
Ph
Fx
Web
Part number 550-100-066/0608
— Boiler Manual
— or —
780-452-8661
780-488-2304
www.hydronicagencies.com
303-675-0944
303-675-0945
chemspeciden@aol.com
800-543-5975
417-862-2610
www.rhomarwater.com
(continued)

Water chemistry

Water pH between 7.0 and 8.5
1. Maintain boiler water pH between 7.0 and 8.5.
Check with litmus paper or have chemically ana-
lyzed by water treatment company.
2. If pH differs from above, consult local water treat-
ment company for treatment needed.
Hardness less than 7 grains
1. Consult local water treatment companies for
unusually hard water areas (above 7 grains hard-
ness).
Chlorine concentration must be
LESS THAN 200 ppm
1. Filling with chlorinated fresh water should be ac-
ceptable since drinking water chlorine levels are
typically less than 5 ppm.
2. Do not use the boiler to directly heat swimming
pool or spa water.
3. Do not fill boiler or operate with water containing
chlorine in excess of 200 ppm.
Clean system to remove sediment
1. You must thoroughly flush the system (without
boiler connected) to remove sediment. The high-
efficiency heat exchanger can be damaged by
buildup or corrosion due to sediment.
2. For zoned systems, flush each zone separately
through a purge valve. (If purge valves and isola-
tion valves are not already installed, install them to
properly clean the system.)
3. Flush system until water runs clean and you are
sure piping is free of sediment.
Do not use petroleum-based clean-
ing or sealing compounds in boiler
system. Damage to elastomer seals
and gaskets in system could occur,
resulting in substantial property
damage.
Before filling the boiler and system
with water, verify the following.
Failure to comply could result in
boiler failure or unreliable opera-
tion.
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