User guide

!
WARNING
Install boiler so gas ignition system components
are protected from water (dripping, spraying,
rain, etc) during appliance operation and service
(circulator replacement, etc).
This addendum applies to series:
UB90, UB95, Q90, Q95M, K90, K95M, BW9 & GWB9, FW95M & OL95M
!
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 ttings nearest boiler prior to system
piping connections.
• WATER TREATMENT and ANTIFREEZE
PROTECTION
MUST
be applied for
ALL
aluminum series
high ef ciency gas- red boilers using antifreeze
protection.
P/N# 240006888, Rev. E [06/2011]
Aluminum Series
High Ef ciency Gas-Fired Boiler
DIELECTRIC ISOLATION &
ANTIFREEZE PROTECTION
ADDENDUM

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