Page 18.3
The
3rd Stage
of Heat is turned on when:
(A)
The 1st and 2nd stages have been on for the time required (
steps #22
and #23, page 13.6).
It is adjustable from 0-60 minutes and the default
is two minutes.
(B)
The temperature from the setpoint is equal to or greater than:
the set-
point plus the 1st stage deadband (step #19, 13.5), plus the 2nd stage
deadband (step #20, 13.5) plus the 3rd stage deadband (step #21,
13.5).
This 3rd stage deadband is adjustable from 0-10 degrees and
the default is two degrees.
W3 JUMPER SETTING
If the jumper for MISC1, MISC2, or MISC3 is set to W3, the corresponding MISC screw terminal
on the backplate will control a third stage of heat.
Explanation of Jumper Settings
Explanation of Jumper Settings
And
Heat
Setpoint
Cool
Setpoint
Deadband
Deadband
Deadband
Deadband
Deadband
db 1
db 1
db 2
db 2
db 3
(adj. 1-6 )
(adj. 0-10 )
(adj. 0-10 )
(adj. 0-10 )
(adj. 1-6 )
1st Stage
turn on
2nd Stage
turn on
3rd Stage
turn on
1st Stage
turn on
2nd Stage
turn on
Heating
Cooling
TEMPERATURE
DECREASE
INCREASE
W3 MULTI-STAGE OPERATION EXPLAINED - SECTION 13
TOTALINE
HUM JUMPER SETTING
If the jumper for MISC1, MISC2, or MISC3 is set to HUM, the corresponding MISC screw
terminal on the backplate will control a humidification system.
If your HVAC unit is equipped with a humidification system and the
Humidity Module (sold separately) has been installed, the thermostat will
provide power to the MISC1, MISC2, or MISC3 terminal of the thermostat
when the humidity in the home falls below the humidity setpoint you have
chosen. The value for this setpoint ranges from 0% to 60%. If no
humidity is desired or if a humidification system has not been installed, set
the value to OFF.
HUMIDIFICATION OPERATION - SECTION 9
18
Summary of Contents for P374-1800
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