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JOHNSON CONTROLS
119
FORM 150.62-NM8 (1020)
3
Fan #1
Fan #2
Fan #3
Fan #4
FIG. 9 – YCAL0014 THROUGH YCAL0080 FAN LOCATION (TYPICAL)
LD07403A
CONDENSER FAN CONTROL
YCAL0014 - YCAL0080
TABLE 27 – YCAL0014 THROUGH YCAL0080 CONDENSER FAN CONTROL USING OUTDOOR
AMBIENT TEMPERATURE AND DISCHARGE PRESSURE.
FAN
STAGE
ON
OFF
CONTACTOR
I/O BOARD
OUTPUT
FAN #
SYS 1 SYS 2 SYS 1
SYS 2 SYS 1 SYS 2
1
1 FAN
FWD
OAT >25°F (-3.9°C)
OR
DP > Fan Ctrl On Press
OAT < 20°F (-6.7°C)
AND
DP < Fan Ctrl On Press – (Diff.
Press.)
8M
11M
TB7-9 TB10-9
3
4
*3
2 FANS
FWD
OAT >65°F (18.3°C)
OR
DP > Fan Ctrl On Press
+ 40 psig (2.76 bars)
OAT < 60°F (15.6°C)
AND
DP < Fan Ctrl On Press.-
[Diff. Press + 40
psig (2.76
bars)]
7M &
8M
10M &
11M
TB7-8
&
TB7-9
TB10-8
&
TB10-9
1 & 3 2 & 4
* (Discharge Pressure Controls will not function unless the optional Discharge Pressure Transducer is installed)
Summary of Contents for YCAL0014E Series
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