Venstar T2800 Owner's Manual page 44

Setting a Thermostat Jumper for
Humidity Operation
To control a MISC output for humidification, place the MISC1, MISC2,
or MISC3 jumper on the terminal labeled HUM (see diagram below).
This will supply 24VAC to the selected MISC terminal based on the
humidification programming in the following pages. Only one of the
three outputs (MISC1, MISC2, or MISC3) is required to have this
jumper. For more information regarding the MISC1, MISC2, and
MISC3 outputs, please see section 17.
In the diagram below, the MISC3 jumper
has been set for HUM (humidify) operation.
ELEC
GAS
W3
HP
HUM GAS
DEHUM
Y2 B
(MISC1
MISC3 MISC2 MISC1 O
ONLY)
W1
W2
Y1
MISC1
G
RS2
MISC2
MISC3
RS+5
R
INSTALL HUMIDITY
MODULE WITH SENSING
RSGND
ELEMENT OUTWARD
C
MISC3 MISC3
OK
W3
HUM
DEHUM
MISC3 MISC2
IMPORTANT CAUTION
Page 9.3
9
Y2
(MISC1
MISC1
ONLY)