Dunkirk Q90-100, Q90-50, Q90-75 Installation Guide
Z
Aluminum Series 90+
Gas Fired Boiler Installation Guidelines,
Water Treatment and Antifreeze Protection
P/N 240006888 Rev 1.0 [10/07]
IMPORTANT: These instructions are in addition to any existing
Antifreeze and Water Treatment information in the boiler instal-
lation manual, the boilers user's manual or any other existing
supplemental instruction or addendum. Antifreeze may be used
in most applications. Water alone may also be used in most
applications. Consult with your heating professional for recom-
mendations.
The information in this Supplemental Instruction is to be used
in place of that in the following manuals: 14683301 rev 3.4,
240004826D rev 1.3, 240006103D rev 1.1, 14683604 rev 3.4,
240004826K rev 1.3, 14683450 rev 3.5, 1305016 rev 2.1,
1305016 rev 2.1,240004826B rev 1.3, 240004826BF rev 1.3,
240006103B rev 1.1, 240006103BF rev 1.0, 1305011 rev 3.4,
240004826U rev 1.3, 240006103U rev 1.1.
Recommendations
* System leaks may not always be visible. An unseen system
leak will become obvious if boiler pressure decreases when
make up valve is closed.
* All system leaks must be repaired immediately. Constant in-
troduction of make up water will introduce dissolved oxygen,
resulting in accelerated boiler corrosion.
Water Chemistrv L.
* This boiler is designed for a closed loop hydronic heat sys-
tem ONLY! This boiler is not suitable for natural gravity type
installations, or any other open type system.
* System fluid pH must be maintained between 7.0 and 8.0.
* Maintain water hardness below 7 grains hardness.
* Filling with chlorinated fresh water should be acceptable
since drinking water chlorine levels are typically less than
5 ppm. Do not fill boiler with water containing chlorine in
excess of 100 ppm.
• Do not use inhibitors or other 2.
additives that are not specifically
approved for this product.
• Consult a local water treatment
specialist for recommendations
if any of the above are outside
the stated ranges. 3.
Cleanin tht_tb__vdronic S_stem:
IMPORTANT: Do not mix dif-
ferent manufacturers' prod-
ucts. Doing so will void the
warranty of the boiler.
Consideration should be given
to cleaning the heating system,
particularly in retrofit situations
where a new boiler with an alu-
minum heat exchanger is being
installed in an existing piping sys-
tem. Systems that have antifreeze
that is not approved by the boiler
manufacturer must be completely
flushed to ensure no unapproved
antifreeze remains
In older systems obviously discol-
ored, murky or dirty water; or a pH
reading outside the boiler manu-
facturer's stated acceptable range
are indications that the system
should be cleaned or treated.
1. Measure total capacity of the
system including the piping,
tanks, boiler, collector plates,
etc. The most accurate method
of measuring fluid capacity is
to fill the system and then com-
pletely drain it, volumetrically
measuring the fluid drained.
Freeze Protection
Aluminum Safe Antifreeze, Treat-
Antifreeze, if needed, must be of a
• Always clean system prior to us-
• Only use the antifreeze manu-
• Use of antifreeze must be in accor-
Thoroughly flush the system
with clean water to remove
any sediment or contaminants.
Sludge and iron oxide deposits
can cause rapid breakdown of
inhibitors.
Cleaning fluid - Flushing with
clean water is preferred. If
cleaning fluid is used, only
use cleaner specifically ap-
proved for use with alu-
minum boilers. Utilize the
cleaner in accordance with
manufacturer's instructions.
merits and Additive Guidelines:
type specifically designed for use
in closed hydronic heating systems
and be compatible with type 356
T6 aluminum at operating temper-
atures between 20°F (-6.7°C) and
250°F (121 °C). See the "Approved
Aluminum Antifreeze & Inhibitor
Suppliers" section of this manual
for a list of boiler manufacturer ap-
proved products.
ing antifreeze, refer to the Clean=
ing the Hydronic System section
of this manual for details.
facturers' products outlined in
this document.
dance with local plumbing codes.
Loading...