Installation Manual

110 Rinnai I-Series Condensing Boiler Solo Manual
When replacing an exisng boiler, the
heang system shall be ushed with an
approved system cleaner before the new
boiler is added to the system.
The Rinnai boiler must be isolated from the
system while the system is ushed. No
system cleaner should ever enter the boiler
heat exchanger due to its causc nature
which could damage the heat exchanger.
Reference secon “14.1 Approved
Cleaners, Inhibitors and Anfreezes” in the
Appendix for an approved list of system
cleaners, inhibitors, and anfreezes.
Instrucons
1. Flush the CH system with water.
2. Isolate the boiler from the CH system.
3. Fill the CH system with an approved
cleaner and circulate through the system.
4. If the installaon is a zone system (ulizes
mulple zones), ush out each zone
individually.
5. Flush the CH system with water again,
ensuring all zones have been ushed.
6. Clean out the dirt trap per manufacture’s
instrucons.
7. The boiler and system may now be lled
through the ll valves.
8. If using glycol, ensure it is an approved
glycol and rao.
9. Verify water quality is within the stated
values in secon “4.4.1 Water Quality
Guidelines.”
IMPORTANT
• Water should be within guidelines for
water quality listed in secon “4.4.1
Water Quality Guidelines.”
• Use the proper water treatment to
ensure the pH and water hardness are
within the Rinnai boiler water quality
guidelines listed in secon “4.4.1 Water
Quality Guidelines.”
• Test the pH of the water that will be
used for lling the system.