11
Near Boiler Piping
• When boiler installation is for new heating system,
install all of radiation units (panels, radiators,
baseboard, or tubing) and supply and return mains.
• After all heating system piping and components
have been installed, make fi nal connection of system
piping to boiler. Hot water boiler installed above
radiation level, or as required by the Authority having
jurisdiction, must be equipped with low water cut off
device.
• Periodic inspection is necessary for fl ushing of fl oat
type devices, per low water cut off manufacturers
specifi c instructions.
Clean System First
Before
connecting boiler to heating system, clean and fl ush
system thoroughly. Verify system is free of sediment, fl ux
and any residual boiler water additives.
Systems having antifreeze not recommended must be
completely fl ushed to insure no old antifreeze remains.
In older systems obviously discolored, murky or dirty
water; or pH reading outside acceptable range (between
7.0 and 8.0) are indications the system should be cleaned
or treated. Thoroughly fl ush system with clean water to
remove any sediment or contaminants. Sludge and iron
oxide deposits can cause rapid breakdown of inhibitors.
Flushing with clean water. If chemical cleaners are used,
use only those recommended for use with aluminum
boilers. Follow chemical cleaner manufacturer’s instructions
completely.
DO NOT
mix different manufacturer’s
products.
NEAR BOILER PIPING
Supply And Return Lines
• Boiler is set up to receive 1¼” NPT supply and return
piping from top access.
• Boiler may be piped from left side by turning supply
elbow.
• Install furnished dielectric unions at boiler supply and
return lines prior to making system piping connections
• Do not install copper supply and return piping directly
into aluminum boiler section casings due to galvanic
corrosion between dissimilar metals.
• Must use provided dielectric unions between copper
system piping and boiler to make fi nal connection to
boiler.
• Circulator pump can be installed at installer preferred
location.
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