Johnson Controls METASYS TEC1100 Series Technical Bulletin page 11

Metasys
If the transformer (T2) is to power all of the loads, the
CPN, FAC,
yellow pin jumper must be inserted connecting
NCM
R to 24 V. The jumper is located on the electronics board
above the relays. If a separate 24 V transformer (T1) is to
be used, it must be connected between R and 24 V(c), and
N2-
N2+
REF
the jumper should be removed between R and 24 V.
Jumper
Electronics
Thermostat
24 V
Y1 Y2 G O B R LED1 RS1 CLK1
W1
24 V(c)
Equipment
RS2
CLK2
RS+V
LED2
Reverse
First Stage
Fan
Valve
Compressor
Heating
Second Reverse
Remote Remote
Auxiliary
Stage Valve
Sensor Clock/Timer
Heat
Compressor
Cooling
(if used) (if used)
Field Contact Switches
Hpndiag
T1 T2
Figure 6: TEC1102 Heat Pump Wiring Schematic
TEC1100 Series Thermostat Technical Bulletin 11