Bryan Boilers Triple-Flex 150 ユーザーズマニュアル

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Date:  
8-4-2010 
 
Revision: 0 
 
Form:  
2396
 
WARNING: 
The boiler area should be kept free of 
combustible materials, gasoline and 
other flammable liquids. 
The boiler and venting system must be 
kept free of obstructions of the air 
louvers. 
The following procedures must be 
conducted as outlined to prevent 
damage to and assure safe operation 
of the boiler. 
All cover plates, enclosures, and 
guards must be in place at all times, 
except during maintenance and 
servicing.                                                                                                                     
3.1 C
LEANING 
T
HE 
B
OILER 
A
ND 
S
YSTEM 
– N
EW 
S
YSTEMS
 
 
3.1.1 P
RE
-B
OIL 
O
UT 
F
LUSHING 
O
S
YSTEM
 
Much of the dirt and contamination in a new hot 
water system can be flushed out before the boil 
out of the system.  First, flush the system of 
waste with clear water.  The boiler and 
circulating pumps must be isolated through the 
successive zones of the system to waste, 
carrying metal shavings, dirt, pipe joint 
compound, etc. with it.  Follow with a chemical 
flush. NOTE! Be CERTAIN that the chemicals 
used to flush and boil-out the boiler and system 
contain NO CHLORIDES.  The boiler is 
fabricated with austenitic stainless steels that 
can be severely damaged when exposed to 
chlorides.  The removal of pipe chips and other 
debris from the system before opening the 
isolation valves to the boiler and pumps will help 
to protect this equipment from damage by such 
debris. 
In combination with system contamination, 
bacteria from ground water boiler water may 
produce objectionable odors, sometimes 
resembling the odorant used in natural gas.  It is 
important to keep these fumes from air intakes 
that would distribute them throughout the 
building. 
3.1.2 B
OIL 
O
UT 
P
ROCEDURE
 
The boil out of the boiler and system is neither 
difficult nor expensive.  The chemicals needed 
for cleaning are readily available.  Tri-sodium 
phosphate, and sodium hydroxide (lye) are the 
most commonly used chemicals.  Be certain the 
chemicals used contain NO CHLORIDES.  Use 
only one type of solution in the system.  The 
amount of chemical required will vary according 
to conditions, but one pound per fifty gallons of 
water is suggested. 
 
Fill the system with this solution, venting all air.  
Then, with the circulating pump running, bring 
the system to design or operating temperature.  
After circulating water for two to three hours, the 
system should be drained completely, and 
refilled with fresh, softened water.  Usually 
enough of the cleaning solution will adhere to 
the piping to result in an alkaline solution 
satisfactory for operation.  A pH reading 
between 7 and 8 is preferred.  If necessary, to 
increase the pH, a small amount of cleaner may 
be added. 
 
WARNING: 
51 
 
The boil out procedure outlined must 
be performed by, or under the direct 
supervision of, a qualified technician.  
The chemicals used present a hazard 
of burns and physical injury if 
mishandled.  Always use a suitable 
facemask, goggles, protective gloves, 
and garments when handling caustic 
chemicals.  Do not permit the chemical 
to come into contact with skin or 
clothing.  Always follow the safety 
precautions on the container's label.  
Add chemicals slowly and in small 
amounts to prevent excessive heat 
and agitation.