York MILLENIUM YCAS Series - Page 143

143
YORK INTERNATIONAL
FORM 201.18-NM6
If discharge pressure drops below 8.3 BARG or oil to
suction pressure differential falls below 5.2 BARG, the
micro will turn off a step of fan cycling every 5 sec-
onds: until the discharge pressure rises above 8.3 BARG
and oil to suction pressure differential rises above 5.2
BARG in an effort to quickly control the discharge pres-
sure to an acceptable range.
TABLE 4 – CONDENSER FAN CONTROL AND FAN CONTACTOR DATA FOR DXST UNITS
WITH 3 FANS/SYSTEM (EPROM VERSIONS C.ACS.09.01 (F350) AND C.ACS.09.02 (3902)
* Sys 1 Outputs are on Relay Output Board #1
Sys 2 Outputs are on Relay Output Board #2
Fan
ON * OFF *
Fan Wire
Relay
Stage
Fans Conditions Conditions
Contactor Number
Board
DP DP & OAT
Output*
1 1 >15.2 BARG <10.3 BARG & <15.6°C 9M 130 15
S
2 3 >16.2 BARG <11.4 BARG & <18.3°C 10M 131 14
Y
3 5 >17.2 BARG <12.4 BARG & <21.1°C 11M 132 10
S
4 1, 5 >18.3 BARG <13.4 BARG & <23.9°C 9M, 11M 130, 132 10,15
5 3, 5 >19.3 BARG <14.5 BARG & <26.7°C 10M, 11M 131, 132 10, 14
1
6 1, 3, 5 >20.0 BARG <15.2 BARG & <29.4°C 9M, 10M, 11M 130, 131, 132 10, 14, 15
1 2 >15.2 BARG <10.3 BARG & <15.6°C 15M 230 15
S
2 4 >16.2 BARG <11.4 BARG & <18.3°C 16M 231 14
Y
3 6 >17.2 BARG <12.4 BARG & <21.1°C 17M 232 10
S
4 2, 6 >18.3 BARG <13.4 BARG & <23.9°C 15M, 17M 230, 232 10, 15
5 4, 6 >19.3 BARG <14.5 BARG & <26.7°C 16M, 17M 231, 232 10, 14
2
6 2, 4, 6 >20.0 BARG <15.2 BARG & <29.4°C 15M, 16M, 17M 230, 231, 232 10, 14, 15
Table 6 provides a simplified operating graph of the fan
staging for this version.
Fan stages increment identical to the stages shown in
Table 4.
TABLE 5 – CONDENSER FAN CONTROL AND FAN CONTACTOR DATA FOR DXST UNITS
WITH 3 FANS/SYSTEM (EPROM VERSION C.A17.09.02 (5320)
* Sys 1 Outputs are on Relay Board #1
Sys 2 Outputs are on Relay Output Board #2
Fan
ON * OFF *
Fan Wire
Relay
Stage
Fans Conditions Conditions
Contactor Number
Board
DP DP & OAT
Output*
1 1 >14.1 BARG <9.3 BARG & <15.6°C 9M 130 15
S
2 3 >15.2 BARG <10.3 BARG & <18.3°C 10M 131 14
Y
3 5 >16.2 BARG <11.4 BARG & <21.1°C 11M 132 10
S
4 1, 5 >17.2 BARG <12.4 BARG & <23.9°C 9M, 11M 130, 132 10,15
5 3, 5 >18.3 BARG <13.4 BARG & <26.7°C 10M, 11M 131, 132 10, 14
1
6 1, 3, 5 >19.0 BARG <14.1 BARG & <29.4°C 9M, 10M, 11M 130, 131, 132 10, 14, 15
1 2 >14.1 BARG <9.3 BARG & <15.6°C 15M 230 15
S
2 4 >15.2 BARG <10.3 BARG & <18.3°C 16M 231 14
Y
3 6 >16.2 BARG <11.4 BARG & <21.1°C 17M 232 10
S
4 2, 6 >17.2 BARG <12.4 BARG & <23.9°C 15M, 17M 230, 232 10, 15
5 4, 6 >18.3 BARG <13.4 BARG & <26.7°C 16M, 17M 231, 232 10, 14
2
6 2, 4, 6 >19.0 BARG <14.1 BARG & <29.4°C 15M, 16M, 17M 230, 231, 232 10, 14, 15
8