4
NOTES - Conventional Systems
[1]*GCBUUFSJFTBSFJOTUBMMFEUIF7PMU"$DPNNPODPOOFDUJPOJTPQUJPOBM
[2]3FNPWFGBDUPSZJOTUBMMFEKVNQFSGPSEVBMUSBOTGPSNFSTZTUFNT
[3]*OEVBMUSBOTGPSNFSTZTUFNTUSBOTGPSNFSDPNNPONVTUDPNFGSPN
DPPMJOHUSBOTGPSNFS
[4]*GOFFEFEGPSTZTUFN
Provide disconnect and overload protection as required.
2 HEAT / 2 COOL Single or Dual Transformer (1220 Only)
Set System Type to CONV
Rh
7PMU"$1PXFSIFBUJOHUSBOTGPSNFS[note 2]
Rc
7PMU"$1PXFSDPPMJOHUSBOTGPSNFS[note 2]
W1 )FBU3FMBZ4UBHF
W2 )FBU3FMBZ4UBHF
Y1 $PNQSFTTPS3FMBZ4UBHF
Y2 $PNQSFTTPS3FMBZ4UBHF [note 4]
G 'BO3FMBZ
C 7PMU"$5SBOTGPSNFS$PNNPO[note 1, 3]
Conventional Systems (cont.)
Typical Wiring Configurations
NOTE: The “Installer Switch” option will be configured in the next step.
Heat Pump Systems
1 HEAT / 1 COOL - No Auxiliary Heat
Set Installer Switch to HP
Rh 7PMU"$1PXFS
Rc $POOFDUFEUP3IXJUITVQQMJFE+VNQFS8JSF
O or B
$IBOHFPWFS7BMWF [note 2]
Y1 $PNQSFTTPS3FMBZ
G 'BO3FMBZ
C 7PMU"$5SBOTGPSNFS$PNNPO [note 1]
2 HEAT / 1 COOL - Including Auxiliary Heat (1220 only)
Set Installer Switch to HP
Rh 7PMU"$1PXFS
Rc $POOFDUFEUP3IXJUITVQQMJFE+VNQFS8JSF
O or B
$IBOHFPWFS7BMWF[note 2]
Y1
$PNQSFTTPS3FMBZTUTUBHFIFBUJOHDPPMJOH
W2 "VYJMJBSZ)FBU3FMBZOETUBHFIFBUJOH[note 3]
E &NFSHFODZ)FBU3FMBZ [note 3]
G 'BO3FMBZ
C 7PMU"$5SBOTGPSNFS$PNNPO [note1]