AERCO Esteem O&M Manual - Manual (Page 45)

39
Check Boiler System Water
Chemistry
WARNING!
D
O NOT USE PETROLEUM
-
BASE CLEANING OR
SEALING COMPOUNDS IN THE BOILER SYSTEM
.
D
AMAGE TO SEALS AND GASKETS IN THE SYS
-
TEM COMPONENTS COULD OCCUR
,
RESULTING
IN SUBSTANTIAL PROPERTY DAMAGE
.
N
OTICE
System water including additives must
be practically nontoxic, having a toxicity
rating or Class of 1, as listed in Clinical
Toxicology of Commercial Products.
W
ATER P
H L
EVEL
6.0
TO
8.0
Maintain the boiler water pH between 6.0 and
8.0. Check using litmus paper or contact a water
treatment company for a chemical analysis.
If the pH does not meet this requirement, do
not operate the Esteem 399 Low NOx or leave
the unit filled until the condition is corrected.
W ATER H ARDNESS L ESS T HAN 7 G RAINS
For areas with unusually hard water (hard-
ness above 7 grains) consult a water treat-
ment company.
C
HLORINATED
W
ATER
Do not use the Esteem 399 Low NOx to heat
a swimming pool or spa directly.
Maintain the chlorine level of the water at lev-
els considered safe for drinking.
Flush Boiler and Domestic System
to Remove Sediment
The installer must flush the boiler system to
remove any sediment to allow proper opera-
tion of the Esteem 399 Low NOx .
Flush the systems until the water runs clean
and is free of sediment.
For zoned systems, each zone should be
flushed through a purge valve. Purge valves
and isolation valves should be installed on
each zone to allow proper flushing of the sys-
tem.
Check and Test Antifreeze
For boiler systems containing antifreeze solu-
tions, follow the antifreeze manufacturer’s
instructions in verifying the inhibitor level and
to ensure the fluid characteristics are within
specifications.
Due to the degradation of inhibitors over time,
antifreeze fluids must be periodically replaced.
Refer to the manufacturer of the antifreeze for
additional instructions.
N
OTICE
System water including additives must
be practically nontoxic, having a toxicity
rating or Class of 1, as listed in Clinical
Toxicology of Commercial Products.
Use of Antifreeze in the Boiler
System
WARNING!
NEVER
USE AUTOMOTIVE OR ETHYLENE GLY
-
COL ANTIFREEZE OR UNDILUTED ANTIFREEZE IN
THE PRIMARY SYSTEM AS FREEZE PROTECTION
.
T
HIS CAN CAUSE SEVERE PERSONAL INJURY
,
DEATH OR PROPERTY DAMAGE
.
Determine the antifreeze fluid quantity using
the system water content volume and follow-
ing the antifreeze manufacturer instructions.
The water volume of the Esteem 399 Low NOx
is approximately 7 gallons [26 L] for Esteem 399
Low NOx . Remember to include the volume of
the expansion tank.
Chapter 10 Start-Up Preparation
GF-125