Venstar T2800 Owner's Manual page 74

Configuring the Jumpers
For additional flexibility, your thermostat has three configurable
outputs. These outputs are designed to have different functions
depending on how the jumpers are set (below).
Each output, labeled MISC1, MISC2, and MISC3 may be set for one
of the four choices available.
In the diagram below, the MISC3 jumper has been set for HUM*
(humidification) operation, the MISC2 jumper has been set for
DEHUM* (dehumidification) operation, and the MISC1 jumper has
been set for Y2 (second stage cooling) operation.
ELEC
GAS
W3
HP
GAS
HUM
DEHUM
Y2 B
(MISC1
MISC3 MISC2 MISC1 O
ONLY)
W1
W2
Y1
MISC1
G
RS2
MISC2
MISC3
RS+5
Rs1
R INSTALL HUMIDITY
MODULE WITH SENSING
RSGND
ELEMENT OUTWARD
C
CAUTION
NEVER PUT MORE THAN
ONE JUMPER ON THE SAME
MISC JUMPER BLOCK!
DOING SO MAY DAMAGE
YOUR THERMOSTAT.
W3
HUM
DEHUM
MISC3 MISC2
*The Humidity Module (sold separately) must
be installed to operate a humidification
and/or dehumidification system.
MISC3 MISC3
OK
Page 17.2
Y2
(MISC1
MISC1
ONLY)
17