Carrier 09DK054-084 - Manual (Page 31)

Table 7 — Minimum Outdoor-Air Operating
Temperature
English
09DK—
HEAD
PRESSURE
CONTROL
TD
° F
COMPRESSOR CAPACITY (%)*
100 1 75 1 50 1 25
Minimum Outdoor-Air
Temperature ° F
All
Sizes
FCPSs and
Motormaster®
III
30
25
20
-20 -20 -20 -20
054,
064
FCPSst
2 Fans
30
25
20 29
38
47 34
40
47 38
42
46 51
53
56
074,
084
FCPSst
2 Fans
ATSs
2 Fans
30
25
20 12
22
31
19
25
31
22
29
36 43
47
51
SI
09DK—
HEAD
PRESSURE
CONTROL
TD
° C
COMPRESSOR CAPACITY (%)*
100 1 75 1 50 1 25
Minimum Outdoor-Air
Temperature ° C
All
Sizes
FCPSs and
Motormaster
III
16.7
13.9
11 1
-29 -29 -29 -29
054,
064
FCPSst
2 Fans
16.7
139
11 1 -2
3
8
1
4
8
3
6
8 11
12
13
074,
084
FCPSst
2 Fans
ATSs
2 Fans
167
139
11 1 -11
-6
-1
-7
-4
-1
-6
-2
2
6
8
11
LEGEND
ATS — Air Temperature Switch
FCPS — Fan Cycling Pressure Switch
TD — Temperature Difference = Saturated Condensing
Temperature Entering - Entering-Air Temperature
'Interpolation permitted.
tAdditional FCPSs needed for 67/33, 33/33/33, and 33/33/17/17%
capacity split applications
NOTES:
1. Fans or the 09DK054-084 units are controlled by ATSs and FCPSs.
See Table 8 for more details.
2 Minimum outdoor temperatures are determined for indoor and out­
door unit combinations of the same capacity.
Table 8 — Fan Cycling Controls Temperature/
Pressure Settings
English
FCPS
OPENS AT 160 ATS
UNIT 09DK— ±10 psig OPENS AT 70 ± 3° F
CLOSES AT 260
±15 psig
CLOSES AT 80 ± 3° F
054,064 FM 3,4' —
074,084 FM 3,4' FM 5,6t
SI
FCPS
OPENS AT 1103 ATS
UNIT 09DK— ± 69 kPa OPENS AT 21.1 ± 1.7°C
CLOSES AT 1793
± 103 kPa
CLOSES AT 26.7 ± 1.7° C
054,064 FM 3,4* ...
074,084 FM 3,4* FM 5,6t
LEGEND
ATS — Air Temperature Switch
FCPS — Fan Cycle Pressure Switch
FM — Fan Motor
'Fan motors 3 and 4 are each controlled by a FCPS for 100 and
50/50% capacity split applications. For other capacity split options,
the accessory fan control kit must be used and additional FCPS's
are required. See accessory fan control kit installation instructions
for more information
fFan motors 5 and 6 are each controlled by an ATS.
31