Harman PF-120 Installation Manual

Harman® • PF-120 Installation Manual_R1 • 2014 -___ • 03/1422
3-90-08121i
If installing a bulk hopper auger system:
ThePF-120hasapilotoutputthatenergizeswhenthelow
fuelsensorisactivated.SeeWiringdiagrambelowofMain
JunctionBox.
Thispilotoutput canoperatearelayto startandstopthe
bulkhopperaugermotor.
Note:ThesewiresaretooperatearelayONLY.
Note:PowerforthebulkhopperaugermotorCANNOTbe
takenfromthisjunctionbox.
LOW FUEL PILOT OUTPUT *
MAIN JUNCTION BOX
10 AMP CIRCUIT BREAKER
POWER TO THE UPS *
120VAC 60 hz
BLACK
120VAC INPUT
TERMINALS
DRK BLUE
WHITE
WHITE
GREEN
NL
BROWN
DRK BLUE
VIOLET
BROWN
BLACK
RED
BROWN
GREEN
WHITE
WHITE
GREEN
WHITE
BROWN
SKY BLUE
WHITE
Figure 5.15
E. Installing Duct System
EXISTING
UNIT
Supply Duct
Return Duct
PF100
Thepelletfurnacewarmairsupplyandthecoldairreturn
must be installed in a parallel arrangement. EXAMPLE:
Thewarmairsupplyductfromthepellet furnace is to be
connected to thewarm air supplyof the existing furnace.
Alsothecoldairreturnductfromtheexistingfurnaceisto
beconnectedtothecoldairreturnductofthepelletfurnace.
Isolationdampers(2)shouldbeinstalledintheductwork.
(1)inthewarmairsupplyductfortheexistingfurnaceand
(1)inthewarmairsupplyductofthepelletfurnaceafteror
“downstream”ofthehighlimit/fancontrol.Thesedampers
canbemanuallyoperatedorfullyautomatic.Ineithercase,
theunitthatisnotbeingusedmustbepreventedfrombeing
operated.(Thisalsocanbedonemanuallyorautomatically.)
NOTE:Anycontrolwiring,powerwiringneededshouldbe
performedbyaqualiedinstallerand/orelectrician.
Thewarm-airsupplyoutletofthepelletfurnaceshallnotbe
connectedtothecold-airreturninletoftheexistingfurnace
becauseofthepossibilityofoverheatingcomponentsofthe
existing furnace, causing the existing furnace to operate
otherthanasintended.
We recommend that the warm air supply plenum be
constructedofsheetmetal.
DO NOT USE DUCT ELBOWS HAVING AN INSIDE RADIUS
OF LESS THAN 150 MM (6 IN).
Add-on unit shall only be installed on a furnace duct
system and chimney that are in good operating condition.
The duct piping must be of metal construction in
accordance with NFPA 90B, 2-1.3.
Installing Duct
Thepelletfurnacemaybeconnectedtoagasoroil-red
central furnace or heat pump duct system Figure 5.15.
Priortoinstallation,determinewhetherallrequirementsfor
installationincludingallclearancescanbemet.

Harman PF-120 Specifications

General

Brand	Harman
Model	PF-120
Category	Furnace
Language	English