Harman® • Accentra52i-TC Installation Manual_R8 • 2017 -___ • 01/19
15
3-90-00584i
Harman® strongly recommends installing battery back-
up to minimize entry of smoke into the room in the
event of power loss.
Your pellet/biomass burning appliance relies on a
combustion blower to remove exhaust. A power failure will
cause the combustion blower to stop. This may lead to
exhaust seeping into the room. Vertical rise in the venting
may provide natural draft. It is, however, no guarantee
against leakage.
There are two Harman® approved battery back-up
options for your appliance:
Uninterruptible Power Supply (UPS) UPS
battery
back-ups are available online or at computer and office
equipment stores. Your Harman® appliance with Rev E or
later software available beginning in November 2010 may
be plugged directly into a Harman® approved UPS:
• The APC (American Power Conversion) model #BE750G
and the TrippLite model INTERNET750U are tested
and approved. Other brands or models may not be
compatible.
When power is lost, a fully charged UPS will power a safe,
combustion blower only shut-down. Your appliance will
pulse the blower every few seconds to clear exhaust until
the fire is out.
Note: The UPS provides safe shut-down only. It is not
intended for continued operation.
Your appliance will recognize when power is restored. What
happens depends on ESP temperature and whether it is
equipped with automatic ignition:
•
In “Automatic” setting,
units equipped with automatic
ignition will respond to the set point and ESP temperature
and resume normal operation.
•
In “Manual” setting
or for units without automatic
ignition:
• If the ESP is cool, the appliance will remain shut down.
• If the fire is out and the ESP is still warm, the feeder may
restart. Since the fire is out, the ESP temperature will not
rise. The unit will then shut-down, and may flash a six-
blink status error. (See ESP error codes)
• If the fire is still burning, it will resume normal operation.
Contact your dealer if you have questions about UPS
compatibility with your appliance.
CAUTION
!
Always keep appliance doors and hopper lid closed
and latched during operation and during power
failures to minimize risk of smoke or burn-back.
CAUTION
!
Use only Harman® approved battery back-up devices.
Other products may not operate properly, can create
unsafe conditions or damage your appliance.
C. Battery Back-up Power
Minimizing Smoke During Loss of Power Using Battery
Back-up
