Carrier 33CS420-01, Owner'S Manual

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Page 17.3
The 3rd Stage of Heat is turned on when:
(A) The 1st and 2nd stages have been on for the time required ( steps 23
and 24, 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 #20, 13.5), plus the 2nd stage
deadband (step #21, 13.5) plus the 3rd stage deadband (step #22,
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 13.4
HUMIDIFICATION OPERATION - SECTION 9
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 0%.
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.
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Carrier