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CAUTION!!!
Any additives
added to the heating system
must not be added directly
inside the boiler but through
the heating system piping to
prevent damage to the boiler.
CAUTION!!!
This boiler is
capable of servicing multiple
temperature loop systems.
It is the responsibility of
the installer to protect the
loops with lower temperature
requirements from higher
temperatures that may be
required by other loops
Floor radiant heating systems
Setting parameter 3015 (see Section
19), the boiler will maintain the maximum
supply water temperature at that range
temperature. No setting changes made
from the control panel will cause the
supply water temperature to exceed the
maximum stated.
CAUTION!!!
To protect the radiant
fl oor panel against over heating
you must install a safety device
that shuts-off the boiler before
it reaches the fl oor panel’s limit
temperature.
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.
7.2.1 - Near boiler heating
piping components
1. Boiler system piping: boiler
system piping MUST be properly
sized. Reducing the pipe size can
restrict the fl ow rate through the
boiler, causing inadvertent high
limit shutdowns and poor system
performance.
2. Boiler system pump: Field supplied.
The system pump MUST be
sized to meet the specifi ed fl ow
requirements.
3.
Indirect water heater
circulating
pump: Field supplied. The pump
MUST be sized to meet the
specifi ed fl ow requirements.
Consult the indirect water heater
operating guide to determine fl ow
characteristics for the selected
product used.
4. Boiler isolation valves: Field
supplied. Full port ball valves are
required. Failure to use full port ball
valves could result in a restricted
fl ow rate through the boiler.
5. Back fl ow preventer: Field supplied.
Back fl ow preventer valves are
recommended for installation as
shown in Figures 7-4 and 7-5.
Failure to install these valves could
result in a reverse fl ow condition
during pump(s) off cycle.
6. Domestic indirect hot water isolation
valves: Field supplied. Full port ball
valves are required. Failure to use
full port ball valves could result in
a restricted fl ow rate through the
boiler.
7. If the boiler is connected to an
indirect water heater for domestic
hot water, an Anti-scald mixing
valve (Field supplied) MUST be
installed.
8. Unions: Field supplied.
Recommended for unit
serviceability.
9. Pressure relief valve: Factory
installed. The pressure relief valve
is sized to ASME specifi cations (see
also Section 7.2.2).
10. Indirect water heaters: fi eld
supplied. This boiler may be piped
to an indirect water heater to heat
domestic hot water with the space
heat transfer medium. The indirect
water heater is connected to the
system supply piping. A pump
controlled by the boiler’s control will
regulate the fl ow of water through
the indirect water heater. The
indirect water heater’s temperature
will be regulated by the boiler’s
control. The boiler is pre-confi gured
to control the operation of the DHW
pump with Domestic Hot Water
Prioritization programming.
7 - INSTALLATION - IB boiler water connections
CAUTION!!!
It is up to the
installer to ensure the minimum
system fl ow is not less than 4
GPM at any time. If the fl ow is
lower, the boiler automatically
stops the burner.
WARNING!!!
The National
Standard Plumbing Code,
the National Plumbing Code
of Canada and the Uniform
Plumbing Code limit the
pressure of the heat transfer
fl uid to less than the minimum
working pressure of the
potable water system up to
30 psi maximum. Also, the
heat transfer fl uid must be
water or other non-toxic fl uid
having a toxicity of Class 1,
as listed in Clinical Toxicology
of Commercial Products, 5th
Edition.
Failure to comply with
this provisions could result
in severe personal injury or
death.
11. Filter: Field supplied. A fi lter or
equivalent multipurpose strainer is
recommended at the return pipe
of the boiler to remove system
particles from older hydronic
systems and protect newer
systems.
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