Harman® • P42i Pellet Insert Installation Manual • 2023 -___ • 08/2316 8742-901D
Yourappliancewillrecognizewhenpowerisrestored.What
happens depends on ESP temperature and whether it is
equippedwithautomaticignition:
• In “Automatic” setting, units equipped with automatic
ignitionwillrespondtothesetpointandESPtemperature
and resume normal operation.
• In “Manual” setting or for units without automatic
ignition:
• IftheESPiscool,theappliancewillremainshutdown.
• IfthereisoutandtheESPisstillwarm,thefeedermay
restart.Sincethereisout,theESPtemperaturewillnot
rise.Theunitwillthenshut-down,andmayashasix-
blinkstatuserror.(SeeESPerrorcodes)
• Ifthereisstillburning,itwillresumenormaloperation.
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.
D. Battery Back-up Power
Minimizing Smoke During Loss of Power Using Battery
Back-up
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
combustionblowertoremoveexhaust.Apowerfailurewill
cause the combustion blower to stop. This may lead to
exhaustseepingintotheroom.Verticalriseintheventing
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)batteryback-upsare
availableonlineoratcomputerandoceequipmentstores.
Your Harman® appliance with Rev E or later software
available beginning in November 2010 may be plugged
directlyintoaHarman®approvedUPS:
• TheAPC(AmericanPowerConversion)model#BE750G
and the TrippLite model INTERNET750U are tested
and approved. Other brands or models may not be
compatible.
Whenpowerislost,afullychargedUPSwillpowerasafe,
combustion blower only shut-down. Your appliance will
pulsetheblowereveryfewsecondstoclearexhaustuntil
thereisout.
Note: The UPS provides safe shut-down only. It is not
intended for continued operation.