TOTALINE P374-1800 Owner's Manual page 42

Installing the Humidity Module Installing the Humidity Module
To install the Humidity Module the thermostat must be detached
from the back plate. Plug the Humidity Module into the Humidity
Module connector as shown in Figure 2 below. Follow the detailed
instructions included with the Humidity Module accessory. Once the
Humidity Module has been installed, you must adjust the Humidity
jumper setting to HUM as shown in Figure 1 below. This will allow
you to access the humidification and dehumidification setup steps.
Back of P374-1800
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
Figure 2
Humidity Module
Thermostat Circuit
Board.
TOTALINE
For proper humidity operation, this
jumper must be set for HUM.
Figure 1
HUM
NO HUM
Install the Humidity Module
(see Humidity Module Instruction
Sheet for more detailed information).
Humidity Module
Plug located on
the Thermostat
Circuit Board.
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OR