OUTDOOR UNIT NO. 1
SEE NOTE 3
OUTDOOR UNIT NO. 2
If an optional Humidistat is to be connected between
"R" and "BK", the factory installed jumper between "R"
and "BK" on the circuit board must be cut. If an op-
tional Humidistat is used, the jumper must also be cut
when applying an airflow command signal to the "BK"
input such as with the variable speed single-zone and
multi-zone system controller. On single speed cooling
only/ non-heat pump systems, jumper "Y" to "O" for
proper operation of the delay profiles and the Humidis-
tat. For two compressor or two speed systems, jumper
"Ylo" to "O".
FIELD WIRING DIAGRAM FOR VARIABLE SPEED 2 STAGE FURNACE
2 STAGE HEATING, 2 STAGE COOLING
(OUTDOOR SECTION WITHOUT TRANSFORMER)
TO 115 V 1 PH.,
60 HZ., POWER
The factory installed jumper between
"R" and "BK" on the circuit board
must be cut if an optional Humidistat
From Dwg. B342018 Rev. 0