Fulton Vantage (VTG) Fully Condensing Hydronic Boiler - Manual (Page 15)

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2-9
SECTION 2
VTG-IOM-2013-0815
INSTALLATION
 Ð
CAUTION
Care needs to be taken to eliminate
oxygen from the water system, as
excess oxygen in the system will
reduce the life of any boiler. The
boiler warranty does not cover heat
exchanger replacement due to oxygen
contamination of boiler water.
Heat exchanger failure due to
inappropriate water quality, foreign
matter or debris damage is not covered
under the warranty.
If the piping system attached to this
unit will be chemically cleaned, the
boiler must be disconnected from the
system and a bypass installed so that
the chemical cleaning solution does
not circulate through the boiler.
NOTE:

Although motorized isolation valves are not required in a primary
only arrangement , they can help ensure system eff ectiveness. Proper
control strategy must be used to ensure fl ow paths in the hydronic loop and
residual heat in pressure vessel can be adequately dispersed when a boiler
is disabled.
Meet Water Chemistry Requirements
System water chemistry requirements are as follows:
 pH: Range of 8.0 - 10.5
 Oxygen: Less than 250 ppb (operating condition)
 Total Iron/Copper: Less than 5 ppm
 Corrosion Inhibitor: Capable of maintaining iron corrosion rates
<2 mpy. Due to changing environmental restrictions a non-heavy
metal ALL ORGANIC inhibitor is recommended which is designed for
multi metal systems including ferrous metals and yellow metals such
as copper and brass.
 Chloride: Less than 250 ppm
Adhere to the following:
1. Refer to your water conditioning or chemical treatment supplier for
analysis and recommendations for proper system conditions.
2. Follow a program with appropriate monitoring and maintenance of system
water conditions as provided by your water conditioning or chemical
treatment supplier.
3. If RO/DI water is used as a source for hydronic loop water or makeup water,
it must be neutralized to a pH of 8.0 - 10.5 prior to entering the boiler.
Failure to neutralize the RO/DI water will void the pressure vessel warranty
and may cause high general corrosion rates.
 The system must have an automatic pH controller to monitor and log the
levels. This must be independent of other chemical feed systems.
 Makeup water pH range must be 7.5 - 8.8; the boiler water must be
maintained within pH range of 8.0 - 10.5.
4. Operate the boiler in a closed-loop system using water or water/glycol
(not requiring a make-up water supply). A large amount of improperly
treated make-up water can cause premature failure of the heat exchanger
resulting from scale build up. Scale build up will reduce the effi
ciency and
useful life of the boiler and is not covered under warranty.
 Prevent Oxygen Contamination
There are several ways to prevent boiler water oxygen contamination:
 Minimize system leaks to minimize make up water requirement