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7.1 - IB boiler water
connections
The boiler comes with the connections
shown in Figures 6-6 or 6-7 and 6.8.
7.2 - Supply and
return piping
The boiler is equipped with ASME safety
relief valves set at 50 PSI (3,4 bar).
However, this boiler can be equipped with
relief valves set at maximum 160 PSI
(11.2 bar) that is the maximum working
pressure.
CAUTION!!!
All heating system
piping must be installed in
accordance with the ANSI/ASME
Boiler and Pressure Vessel Code,
Section IV. All applicable local
codes and ordinances must also
be followed.
CAUTION!!!
Before connecting
the boiler to the heating system
the heating system must be
thoroughly fl ushed to remove
sediment, fl ux, fi lings and
other foreign matter. The heat
exchanger can be damaged by
build-up or corrosion due to
sediment.
CAUTION!!!
An approved
inhibitor should be added to the
heating system water to prevent
limestone and magnetite deposits
from forming and to protect the
boiler from galvanic corrosion.
CAUTION!!!
The manufacturer
cannot be held responsible for
any damage caused by incorrect
use of additives in the heating
system.
CAUTION!!!
The heating system
must be designed so that no
piping or radiation elements are
higher than the corrispondent
maximum pressure of the relief
valve or else the hydraulic head
of the system will cause the relief
valve to open.
7 - INSTALLATION - IB boiler water connection
CAUTION!!!
Continual fresh
make-up water will reduce boiler
life. Mineral buildup in the heat
exchanger reduces heat transfer,
overheats the stainless steel heat
exchanger, and causes failure.
Addition of oxygen carried in by
makeup water can cause internal
corrosion in system components.
Leaks in boiler or piping must
be repaired at once to prevent
makeup water entering the boiler.
CAUTION!!!
This boiler can
supply heating water at a
temperature up to 203°F (95°C)
(setup of the safety high limit
thermostat) and pressure of
160PSI (11,2 bar). If the heating
system is built with materials not
able to resist to this temperature
and pressure, contractor must
supply and install a device that
will shut-off the boiler before
the system material’s maximum
operating temperature and
pressure are met.
CAUTION!!!
Risk of system
damage due to unsuitable
heating system water. If oxygen-
permeable pipes are used, e.g.
for under fl oor heating systems,
the systems must be separated
from one another by plate heat
exchangers able to resist the
corrosion. Unsuitable heating
system water promotes sludge
and corrosion formation. This
can result in boiler damage and
malfunction.
CAUTION!!!
Do not use the boiler
to directly heat domestic hot water,
swimming pool or spa water.
System water piping methods
This boiler is designed to function in
a closed loop pressurized system no
less than 15 psi (1 bar). A pressure
gauge is included to monitor system
pressure. Each boiler installation must
have an air elimination device, which
will remove air from the system. Install
the boiler so the gas ignition system
components are protected from water
(dripping, spraying, etc.), during
appliance operation for basic service
of circulator replacement, valves, and
others.
Low water cutoff device
On a boiler installed above radiation
level, some states and local codes
require a low water cutoff device at the
time of installation.
The low water cutoff terminals are
present within the line voltage junction
box.
Freeze protection
Freeze protection for new or existing
systems must use glycol that is
specially formulated for this purpose.
This includes inhibitors, which prevent
the glycol from attacking the metallic
system components. Make certain to
check that the system fl uid is correct
for the glycol concentration and
inhibitor level. The system should be
tested at least once a year and as
recommended by the producer of the
glycol solution. Allowance should be
made for the expansion of the glycol
solution in the system piping.
WARNING!!!
Never use
non-approved additives or toxic
boiler treatment chemicals in
the heating system as they can
cause serious health problems
or possibly death. Any additives
introduced into the heating
system must be recognized as
safe by the United States Food
and Drug Administration.
WARNING!!!
Use only
inhibited propylene glycol
solutions, which are specifi cally
formulated for hydronic
systems. Ethylene glycol is
toxic and can attack gaskets
and seals used in hydronic
systems. Failure to comply with
this provisions could result in
severe personal injury, death or
substantial property damage.
CAUTION!!!
If glycol is used,
it must be used in accordance
with the instructions supplied
with the product.
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