Carrier 33CS420-01 Owner's Manual page 76

Explanationo ]ump Settings
Y2 JUMPER SETTING
If the jumper for MISCI is set to Y2 the MISC1 screw terminal on the backplate will control a
second stage of cooling,
Y2 OPERATION
-SECTION
134
Controt up to two Coot stages,
The 2nd Stage of heat or cool is turned on when:
(A) The 1st Stage has been on for the time required (step #23,
page 13.6). It is adjustable from 0-60 minutes and the default
is two minutes,
An._d
(B) The temperature spread from the setpoint is equaI to or greater
than: the setpoint plus the deadband (step #24, page 13.6), plus
the 2nd deadband (step #21, page 13.5). This 2nd deadband is
adjustable from 0-10 degrees and the default is two degrees
e Cooling
eadbantl_eadband,,. I
db f _' db_ r
ad "-6" _ O- O" X
Cool I st Stage 2nd Stage
Setpoi_t turn on turn on
ITEM PEP, ATU REJ --INCREASE .-----_
Page 17.5