3
Terminal Function Description
3D *OQVU 7PMU"$$PPMJOH5SBOTGPSNFS
%VBM5SBOTGPSNFS4ZTUFNT0OMZ
3I *OQVU 1PXFS$POOFDUJPO7PMU"$)FBUJOH
5SBOTGPSNFSPS.JMMJWPMU1PXFS4PVSDF
0 0VUQVU 3FWFSTJOH7BMWF$PPM"DUJWF
# 0VUQVU 3FWFSTJOH7BMWF)FBU"DUJWF
: 0VUQVU $PNQSFTTPS3FMBZ
( 0VUQVU 'BO$POUSPM
8 0VUQVU $POWFOUJPOBM)FBU3FMBZ
$ *OQVU 7PMU"$5SBOTGPSNFS$PNNPO
Connect Your Wires
3
Wiring Terminations
Terminal Function Description
8& 0VUQVU 8TU4UBHF$POWFOUJPOBM)FBU
&&NFSHFODZ)FBU3FMBZ
: 0VUQVU
OE4UBHF$POWFOUJPOBM$PPMJOH$PNQSFTTPS
8 0VUQVU OE4UBHF)FBU"VYJMJBSZ)FBU
Additional Terminations (1220 only)
1 HEAT / 1 COOL Single or Dual Transformer
Set Installer Switch to CONV
Rh
7PMU"$1PXFSIFBUJOHUSBOTGPSNFS[note 2]
Rc
7PMU"$1PXFSDPPMJOHUSBOTGPSNFS[note 2]
W1 )FBU3FMBZBQQFBSTBTW1/EPO
Y1 $PNQSFTTPS3FMBZ
G 'BO3FMBZ
C 7PMU"$5SBOTGPSNFS$PNNPO[note 1, 3]
Typical Wiring Configurations
NOTE: The “Installer Switch” option will be configured in the next step.
Conventional Systems
Heat Only or Millivolt
Set Installer Switch to CONV
Rh
1PXFS$POOFDUJPO
W )FBU3FMBZBQQFBSTBTW1/EPO
G 'BO3FMBZ[note 4]
C 7PMU"$5SBOTGPSNFS$PNNPO[note 1]