44
P/N# 240006888, Rev. E [06/2011]
Aluminum Series
High Effi ciency Gas-Fired Boiler
DIELECTRIC ISOLATION & ANTIFREEZE PROTECTION
ADDENDUM
APPENDIX A - DIELECTRIC ISOLATION & ANTIFREEZE PROTECTION
WARNING
You MUST follow these instructions to prevent
damage to boiler’s heat exchanger caused by
inadequate dielectric isolation, incorrect water
treatment or antifreeze application. Failure to
comply could result in possible severe personal
injury, death or substantial property damage.
Instructions in this addendum replace all related
information in Boiler Installation Manual, User’s
Manual, or any other supplemental instruction or
addendum.
Apply this information in place of any related
information in Installation, Operation & Maintenance
Manual Accompanying this boiler.
• DIELECTRIC ISOLATION
Two (2) 1-1/4” X 1-1/4” Female to female dielectric
isolation unions are shipped loose in boiler parts
bag. Install Dielectric Isolation unions at boiler
supply line and return line. Install isolation fi ttings
nearest boiler prior to system piping connections.
• WATER TREATMENT and ANTIFREEZE
PROTECTION
MUST be applied for ALL aluminum series high
effi ciency gas-fi red boilers using antifreeze
protection.
!
WARNING
Install boiler so gas ignition system components are
protected from water (dripping, spraying, rain, etc)
during appliance operation and service (circulator
replacement, etc).
!
