Trane Precedent TSC090H Service manual

April 2020 RT-SVF55F-EN
SAFETY WARNING
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of
heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training.
Improperly installed, adjusted or altered equipment by an unqualified person could result in death or serious injury.
When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that are
attached to the equipment.
Packaged Rooftop Air Conditioners
Precedent™– Cooling, Gas/Electric
7.5 Ton Standard Efficiency Rooftop Units
Service Facts
Model Numbers TSC090H YSC090H

© 2020 RT-SVF55F-EN
Introduction
Read this manual thoroughly before operating or servicing
this unit.
Warnings, Cautions, and Notices
Safety advisories appear throughout this manual as
required. Your personal safety and the proper operation of
this machine depend upon the strict observance of these
precautions.
The three types of advisories are defined as follows:
WARNING Indicates a potentially hazardous
situation which, if not avoided, could
result in death or serious injury.
CAUTIONsIndicates a potentially hazardous
situation which, if not avoided, could
result in minor or moderate injury. It
could also be used to alert against
unsafe practices.
NOTICE Indicates a situation that could result in
equipment or property-damage only
accidents.
Important Environmental Concerns
Scientific research has shown that certain man-made
chemicals can affect the earth’s naturally occurring
stratospheric ozone layer when released to the
atmosphere. In particular, several of the identified
chemicals that may affect the ozone layer are refrigerants
that contain Chlorine, Fluorine and Carbon (CFCs) and
those containing Hydrogen, Chlorine, Fluorine and
Carbon (HCFCs). Not all refrigerants containing these
compounds have the same potential impact to the
environment. Trane advocates the responsible handling of
all refrigerants-including industry replacements for CFCs
and HCFCs such as saturated or unsaturated HFCs and
HCFCs.
Important Responsible Refrigerant
Practices
Trane believes that responsible refrigerant practices are
important to the environment, our customers, and the air
conditioning industry. All technicians who handle
refrigerants must be certified according to local rules. For
the USA, the Federal Clean Air Act (Section 608) sets forth
the requirements for handling, reclaiming, recovering and
recycling of certain refrigerants and the equipment that is
used in these service procedures. In addition, some states
or municipalities may have additional requirements that
must also be adhered to for responsible management of
refrigerants. Know the applicable laws and follow them.
WARNING
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or serious
injury. All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards, you MUST follow requirements for
field wiring installation and grounding as described in
NEC and your local/state electrical codes.
WARNING
Personal Protective Equipment (PPE)
Required!
Failure to wear proper PPE for the job being undertaken
could result in death or serious injury. Technicians, in
order to protect themselves from potential electrical,
mechanical, and chemical hazards, MUST follow
precautions in this manual and on the tags, stickers,
and labels, as well as the instructions below:
• Before installing/servicing this unit, technicians
MUST put on all PPE required for the work being
undertaken (Examples; cut resistant gloves/sleeves,
butyl gloves, safety glasses, hard hat/bump cap, fall
protection, electrical PPE and arc flash clothing).
ALWAYS refer to appropriate Safety Data Sheets
(SDS) and OSHA guidelines for proper PPE.
• When working with or around hazardous chemicals,
ALWAYSrefer totheappropriateSDSandOSHA/GHS
(Global Harmonized System of Classification and
Labeling of Chemicals) guidelines for information on
allowable personal exposure levels, proper
respiratory protection and handling instructions.
• If there is a risk of energized electrical contact, arc, or
flash, technicians MUST put on all PPE in accordance
with OSHA, NFPA 70E, or other country-specific
requirements for arc flash protection, PRIOR to
servicing the unit. NEVER PERFORM ANY
SWITCHING, DISCONNECTING, OR VOLTAGE
TESTING WITHOUT PROPER ELECTRICAL PPE AND
ARC FLASH CLOTHING. ENSURE ELECTRICAL
METERS AND EQUIPMENT ARE PROPERLY RATED
FOR INTENDED VOLTAGE.

WARNING
Follow EHS Policies!
Failure to follow instructions below could result in
death or serious injury.
• All Trane personnel must follow the company’s
Environmental, Health and Safety (EHS) policies
when performing work such as hot work, electrical,
fall protection, lockout/tagout, refrigerant handling,
etc. Where local regulations are more stringent than
these policies, those regulations supersede these
policies.
• Non-Trane personnel should always follow local
regulations.
Introduction
RT-SVF55F-EN 3
Copyright
This document and the information in it are the property of
Trane, and may not be used or reproduced in whole or in
part without written permission. Trane reserves the right
to revise this publication at any time, and to make changes
to its content without obligation to notify any person of
such revision or change.
Trademarks
All trademarks referenced in this document are the
trademarks of their respective owners.
Revision History
• Updated the outdoor sound rating data in general data
chapter.
• Updated the T/YSC090H cooling cycle pressure curve
(400 cfm/ton) in the pressure curve chapter.
• Updated the T/YSC090H subcooling charging chart
(320, 400 and 480 cfm/ton) in the subcooling charging
chart chapter

4RT-SVF55F-EN
Table of Contents
General Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Performance Data . . . . . . . . . . . . . . . . . . . . . . . 6
Evaporator Fan Performance . . . . . . . . . . . . 7
Pressure Curves . . . . . . . . . . . . . . . . . . . . . . . . 13
Subcooling Charging Chart . . . . . . . . . . . . . . 14
Refrigerant Circuit . . . . . . . . . . . . . . . . . . . . . . 17

RT-SVF55F-EN 5
General Data
Table 1. General data - 7.5 tons (single compressor) -
standard efficiency
7.5 Tons
T/YSC090H3,4,W
Cooling Performance(a)
(a) Cooling performance is rated at 95°F ambient, 80°F entering dry bulb,
67°F entering wet bulb. Gross capacity does not include the effect of
fan motor heat. AHRI capacity is net and includes the effect of fan motor
heat. Units are suitable for operation to ±20% of nominal cfm. Units
are certified in accordance with the Unitary Air-Conditioner Equipment
certification program, which is based on AHRI Standard 340/360.
Gross Cooling Capacity (400 cfm/ton)
EER(b)
(b)EER is rated at AHRI conditions and in accordance with DOE test pro-
cedures.
Nominal cfm/AHRI Rated cfm
AHRI Net Cooling Capacity
IEER (T/Y)(c)
(c) Integrated Efficiency Ratio (IEER) is rated in accordance with AHRI
Standard 340/360. The IEER rating requires that the unit efficiency be
determined at 100%, 75%, 50% and 25% load (net capacity) at the
specified in AHRI Standard.
System Power (kW)
92,500
11.2
3,000/2,400
87,000
12.9/12.7
7.77
Compressor
Number/Type 1/Scroll
Sound
Outdoor Sound Rating (dB) 88
Outdoor Coil - Type Microchannel
Configuration
Tube Size (.in)
Face Area (sq. ft.)
Rows/FPI (Fins per inch)
Full Face
1.00
16.91
1/21
Indoor Coil - Type Lanced
Configuration
Tube Size (in.)
Face Area (sq. ft.)
Rows/FPI (Fins per inch)
Refrigerant Control
Drain Connection No./Size (in.)
Full Face
0.3125
9.89
4/16
Thermal Expansion Valve
1¾ NPT
Outdoor Fan - Type Propeller
No. Used/Diameter (in.)
Drive Type/No. Speeds
CFM
Motor HP
Motor RPM
1/26
Direct/1
6400
0.70
1,100
Indoor Fan - Type FC Centrifugal
No. Used/Diameter (in.)/Width (in.)
Drive Type/No. Speeds/RPM
Motor HP (Standard/Oversized)
Motor Frame Size (Standard/
Oversized)
1/12x12
Belt/Variable/1,750
1.0/3.0
56/56
Filters(d)
(d)Optional 2” MERV 8 and MERV 13 filters also available.
Type Furnished
Number Size Recommended Throwaway (2) 16x25x2
Refrigerant Charge (e)
(e)Refrigerant charge is an approximate value. For a more precise value,
see unit nameplate and service instructions.
lbs of R-410A 7.5
Heating Performance(f)
(f) Heating performance limit settings and rating data were established
and approved under laboratory test conditions using American National
Standards Institute standards. Ratings shown are for elevations up to
2000 feet. For elevations above 2000 feet, ratings should be reduced
at the rate of 4% for each 1000 feet above sea level. Applicable to gas/
electric units only.
(Gas/Electric Only)
Heating Input
Low Heat Input (Btu)
Mid Heat Input (Btu)
High Heat Input (Btu)
120,000
150,000/105,000
200,000/140,000
Heating Output
Low Heat Input (Btu)
Mid Heat Input (Btu)
High Heat Input (Btu)
96,000
120,000/84,000
160,000/112,000
Steady State Efficiency%
Low Heat Input (Btu)
Mid Heat Input (Btu)
High Heat Input (Btu)
80
80
80
No. Burners
Low Heat Input (Btu)
Mid Heat Input (Btu)
High Heat Input (Btu)
3
3
4
No. Stages
Low Heat Input (Btu)
Mid Heat Input (Btu)
High Heat Input (Btu)
1
2
2
Gas Supply Line Pressure
Natural (minimum/maximum)
LP (minimum/maximum) 4.5/14.0
11.0/14.0
Gas Connection Pipe Size (in)
Low Heat
Mid Heat
High Heat
1/2
3/4
3/4
Table 1. General data - 7.5 tons (single compressor) -
standard efficiency (continued)
7.5 Tons
T/YSC090H3,4,W

6RT-SVF55F-EN
Performance Data
Table 2. Standard motor & sheave/fan speed (rpm)
Tons
Unit Model
Number
Fan
Sheave
6 Turns
Open
5 Turns
Open
4 Turns
Open
3 Turns
Open
2 Turns
Open
1 Turn
Open Closed
7.5 T/YSC090H AK59x1” N/A 805 865 925 985 1045 1105
Note: Factory set at 3 turns open.
Table 3. Standard motor & low static drive accessory sheave/fan speed (rpm)
Tons
Unit Model
Number
Fan
Sheave
6 Turns
Open
5 Turns
Open
4 Turns
Open
3 Turns
Open
2 Turns
Open
1 Turn
Open Closed
7.5 T/YSC090H AK74x1” N/A 602 650 698 746 794 842
Note: Factory set at 3 turns open.
Table 4. Oversized motor & drive sheave/fan speed (rpm)
Tons
Unit Model
Number
Fan
Sheave
6 Turns
Open
5 Turns
Open
4 Turns
Open
3 Turns
Open
2 Turns
Open 1 Turn Open Closed
7.5 T/YSC090H AK56x1” N/A 958 1022 1086 1150 1214 1278
Notes: Factory set at 3 turns open.
Table 5. Oversized motor & high static drive sheave/fan speed (rpm)
Tons Unit Model Number 6 Turns Open 5 Turns Open 4 Turns Open 3 Turns Open 2 Turns Open 1 Turn Open Closed
7.5 T/YSC090H BK52x1” N/A 1127 1197 1268 1338 1409
Notes: Factory set at 3 turns open.

Table 6. Air temperature rise across electric heaters (°F)
kW Stages 7.5 Tons, 3000 cfm, TSC090H3,4,W
9.0 19.5
18.0 119.0
27.0 228.5
36.0 237.9
Notes:
1. For minimum design airflow, see airflow performance table for each unit.
2. To calculate temp rise at different airflow, use the following formula: 
Temp. rise across Electric Heater = kWx3414/1.08xCFM.

Performance Data
RT-SVF55F-EN 7
Evaporator Fan Performance
Table 7. Belt drive evaporator fan performance - 7.5 tons standard efficiency - TSC090H3,4,W downflow airflow
External Static Pressure (Inches of Water)
.10 .20 .30 .40 .50 .60 .70 .80 .90 1.00
cfm rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp
1-hp Standard Motor & Field Supplied Low Static Drive(a)
(a) Field Supplied Fan Sheave AK74 and Belt AX35
1-hp Standard Motor & Drive
2400 613 0.42 668 0.50 711 0.57 756 0.65 798 0.72 838 0.80 875 0.88 911 0.96 945 1.04 978 1.12
2700 676 0.56 733 0.69 767 0.74 808 0.83 848 0.91 886 1.00 922 1.09 956 1.18 989 1.27 1021 1.36
3000 741 0.75 793 0.89 832 0.98 863 1.04 901 1.14 936 1.24 971 1.33 1003 1.43 1036 1.53 1067 1.63
3300 807 0.98 849 1.10 897 1.26 925 1.32 954 1.40 989 1.51 1022 1.62 1053 1.73 1084 1.83 1113 1.94
3600 874 1.25 909 1.36 957 1.55 990 1.67 1015 1.73 1042 1.82 1074 1.95 1104 2.07 1134 2.18 1163 2.30
3-hp Oversized Motor & Drive
continued
External Static Pressure (Inches of Water)
1.10 1.20 1.30 1.40 1.50 1.60 1.70 1.80 1.90 2.00
cfm rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp
1-hp Standard Motor & High Static Drive Kit (or 2-hp Oversized Motor & Drive)
2400 1011 1.20 1041 1.28 1070 1.36 1099 1.44 1127 1.52 1153 1.60 1178 1.68 1203 1.76 1229 1.84 1252 1.92
2700 1051 1.45 1082 1.54 1111 1.63 1139 1.72 1166 1.81 1192 1.90 1217 1.98 1243 2.08 1268 2.17 1291 2.25
3000 1096 1.73 1124 1.83 1153 1.93 1180 2.03 1207 2.13 1233 2.23 1258 2.33 1283 2.43 1308 2.53 1331 2.63
3300 1142 2.05 1170 2.16 1197 2.27 1223 2.37 1249 2.48 1275 2.59 1300 2.71 1324 2.82 1347 2.92 1371 3.03
3600 1191 2.41 1218 2.53 1244 2.65 1269 2.77 1294 2.89 1319 3.01 1342 3.12 1366 3.24 1389 3.36 — —
3-hp Oversized Motor & Field Supplied High Static Drive(b)
(b)Field Supplied Fan Sheave BK52 and Belt BX30
Notes:
1. For standard evaporator fan speed (rpm), reference the standard motor and sheave/fan speed applicable table in the fan performance section.
2. Data includes pressure drop due to standard filters and wet coils. No accessories or options are included in pressure drop data.
3. 1-hp Fan Motor Heat (MBh) = 2.829 x Fan bhp+.4024. 3-hp Fan Motor Heat (MBh) = 2.900 x Fan bhp+.4750
4. Factory supplied motors, in commercial equipment, are definite purpose motors, specifically designed and tested to operate reliably and continuously
at all cataloged conditions. Using the full horsepower range of our fan motors as shown in our tabular data will not result in nuisance tripping or
premature motor failure. Our product's warranty will not be affected.

Table 8. Belt drive evaporator fan performance - 7.5 tons standard efficiency - TSC090H3,4,W horizontal airflow
External Static Pressure (Inches of Water)
.10 .20 .30 .40 .50 .60 .70 .80 .90 1.00
cfm rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp
1-hp Standard Motor & Field Supplied Low Static Drive(a)
(a) Field Supplied Fan Sheave AK74 and Belt AX35
1-hp Standard Motor & Drive
2400 681 0.52 726 0.60 770 0.69 811 0.77 852 0.85 892 0.94 931 1.02 969 1.11 1007 1.20 1046 1.31
2700 754 0.72 796 0.81 835 0.90 874 0.99 910 1.08 947 1.18 983 1.27 1018 1.37 1052 1.47 1087 1.57
3000 828 0.97 868 1.07 903 1.17 938 1.27 973 1.37 1005 1.47 1039 1.57 1072 1.68 1103 1.78 1135 1.90
3300 904 1.26 940 1.37 974 1.48 1004 1.59 1037 1.71 1069 1.82 1098 1.93 1129 2.04 1159 2.15 1188 2.27
3600 979 1.62 1013 1.74 1045 1.86 1074 1.98 1103 2.10 1133 2.22 1162 2.35 1189 2.46 1217 2.58 1245 2.71
3-hp Oversized Motor & Drive
continued
External Static Pressure (Inches of Water)
1.10 1.20 1.30 1.40 1.50 1.60 1.70 1.80 1.90 2.00
cfm rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp
3-hp Oversized Motor & Drive
2400 1083 1.42 1119 1.52 1153 1.63 1185 1.73 1218 1.84 1249 1.95 1278 2.06 1307 2.16 1337 2.28 1364 2.38
2700 1120 1.67 1154 1.79 1188 1.91 1220 2.02 1252 2.14 1283 2.26 1313 2.39 1342 2.51 1370 2.63 1397 2.74
3000 1166 2.00 1197 2.12 1227 2.23 1256 2.34 1288 2.47 1318 2.61 1347 2.73 1377 2.87 1406 3.01 1433 3.14
3300 1217 2.39 1246 2.51 1274 2.63 1302 2.75 1330 2.88 1357 3.00 1384 3.13 1413 3.27 1441 3.42 — —
3600 1272 2.83 1299 2.96 1326 3.09 1352 3.22 1378 3.35 — — — — — — — — — —
3-hp Oversized Motor & Field Supplied High Static Drive(b)
(b)Field Supplied Fan Sheave BK52 and Belt BX30
Notes:
1. For standard evaporator fan speed (rpm), reference the standard motor and sheave/fan speed applicable table in the fan performance section.
2. Data includes pressure drop due to standard filters and wet coils. No accessories or options are included in pressure drop data.
3. 1-hp Fan Motor Heat (MBh) = 2.829 x Fan bhp+.4024. 3-hp Fan Motor Heat (MBh) = 2.900 x Fan bhp+.4750
4. Factory supplied motors, in commercial equipment, are definite purpose motors, specifically designed and tested to operate reliably and continuously
at all cataloged conditions. Using the full horsepower range of our fan motors as shown in our tabular data will not result in nuisance tripping or
premature motor failure. Our product's warranty will not be affected.
Performance Data
8RT-SVF55F-EN

Table 9. Belt drive evaporator fan performance - 7.5 tons standard efficiency with gas heat - YSC090H3,4,W low &
medium gas heat downflow airflow
External Static Pressure (Inches of Water)
.10 .20 .30 .40 .50 .60 .70 .80 .90 1.00
cfm rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp
1-hp Standard Motor & Field Supplied Low Static Drive(a)
(a) Field Supplied Fan Sheave AK74 and Belt AX35
1-hp Standard Motor & Drive
2400 655 0.47 707 0.55 758 0.64 802 0.72 845 0.80 886 0.88 925 0.97 961 1.05 997 1.14 1028 1.22
2700 724 0.64 770 0.73 817 0.83 861 0.92 900 1.02 939 1.11 976 1.20 1011 1.30 1045 1.39 1077 1.49
3000 794 0.86 837 0.96 878 1.06 920 1.17 958 1.27 994 1.38 1029 1.48 1063 1.58 1096 1.69 1128 1.79
3300 865 1.12 905 1.23 942 1.34 980 1.45 1018 1.57 1053 1.69 1085 1.80 1117 1.92 1148 2.03 1179 2.14
3600 937 1.43 973 1.55 1008 1.67 1042 1.79 1077 1.91 1112 2.05 1144 2.18 1174 2.30 1203 2.42 1232 2.55
3-hp Oversized Motor & Drive
Continued
External Static Pressure (Inches of Water)
1.10 1.20 1.30 1.40 1.50 1.60 1.70 1.80 1.90 2.00
cfm rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp
1-hp Standard Motor & Drive
2400 1060 1.30 1091 1.39 1120 1.48 1150 1.57 1178 1.65 1204 1.74 1231 1.83 1256 1.91 1281 2.00 1304 2.09
2700 1109 1.58 1139 1.68 1167 1.77 1195 1.86 1223 1.96 1249 2.06 1275 2.16 1301 2.26 1325 2.35 1349 2.45
3000 1158 1.90 1188 2.00 1216 2.11 1244 2.21 1271 2.32 1296 2.42 1321 2.53 1346 2.64 1371 2.75 1393 2.85
3300 1209 2.26 1238 2.37 1265 2.49 1293 2.61 1319 2.72 1344 2.84 1369 2.95 1393 3.07 1416 3.18 1441 3.30
3600 1261 2.67 1289 2.80 1316 2.92 1342 3.04 1368 3.17 1393 3.30 1419 3.43 — — — — — —
3-hp Oversized Motor & Field Supplied High Static Drive(b)
(b)Field Supplied Fan Sheave BK52 and Belt BX30
Notes:
1. For standard evaporator fan speed (rpm), reference the standard motor and sheave/fan speed applicable table in the fan performance section.
2. Data includes pressure drop due to standard filters and wet coils. No accessories or options are included in pressure drop data.
3. 1-hp Fan Motor Heat (MBh) = 2.829 x Fan bhp+.4024. 3-hp Fan Motor Heat (MBh) = 2.900 x Fan bhp+.4750
4. Factory supplied motors, in commercial equipment, are definite purpose motors, specifically designed and tested to operate reliably and continuously
at all cataloged conditions. Using the full horsepower range of our fan motors as shown in our tabular data will not result in nuisance tripping or
premature motor failure. Our product's warranty will not be affected.
Performance Data
RT-SVF55F-EN 9

Table 10. Belt drive evaporator fan performance - 7.5 tons standard efficiency with gas heat - YSC090H3,4,W low &
medium gas heat - horizontal airflow
External Static Pressure (Inches of Water)
.10 .20 .30 .40 .50 .60 .70 .80 .90 1.00
cfm rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp
1-hp Standard Motor & Field Supplied Low Static Drive(a)
(a) Field Supplied Fan Sheave AK74 and Belt AX35
1-hp Standard Motor & Drive
2400 739 0.61 783 0.69 825 0.77 866 0.85 903 0.93 941 1.02 978 1.11 1013 1.20 1046 1.28 1078 1.37
2700 821 0.85 861 0.94 898 1.03 935 1.12 972 1.21 1005 1.30 1038 1.39 1072 1.49 1104 1.59 1135 1.69
3000 904 1.14 940 1.24 974 1.34 1008 1.44 1042 1.54 1075 1.65 1105 1.74 1135 1.85 1164 1.95 1195 2.06
3300 987 1.49 1020 1.60 1052 1.71 1083 1.82 1113 1.93 1144 2.04 1174 2.16 1203 2.27 1230 2.38 1257 2.49
3600 1071 1.92 1101 2.04 1131 2.15 1160 2.27 1188 2.39 1216 2.51 1244 2.64 1272 2.76 1298 2.88 1323 3.00
3-hp Oversized Motor & Drive 3-hp Oversized Motor & Field Supplied Drive(b)
Continued
External Static Pressure (Inches of Water)
1.10 1.20 1.30 1.40 1.50 1.60 1.70 1.80 1.90 2.00
cfm rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp
3-hp Oversized Motor & Drive
2400 1110 1.46 1140 1.55 1169 1.64 1198 1.73 1225 1.82 1251 1.91 1277 2.01 1301 2.10 1326 2.19 1350 2.28
2700 1165 1.78 1195 1.88 1223 1.98 1251 2.08 1277 2.18 1304 2.29 1330 2.39 1355 2.49 1378 2.59 1402 2.70
3000 1224 2.17 1252 2.28 1279 2.39 1306 2.49 1332 2.60 1358 2.71 1383 2.83 1407 2.94 1430 3.05 1454 3.16
3300 1283 2.61 1311 2.73 1338 2.85 1364 2.97 1389 3.09 1413 3.21 1439 3.33 — — — — — —
3600 1349 3.13 1373 3.25 1398 3.38 — — — — — — — — — — — — — —
3-hp Oversized Motor & Field Supplied High Static Drive(b)
(b)Field Supplied Fan Sheave BK52 and Belt BX30
Notes:
1. For standard evaporator fan speed (rpm), reference the standard motor and sheave/fan speed applicable table in the fan performance section.
2. Data includes pressure drop due to standard filters and wet coils. No accessories or options are included in pressure drop data.
3. 1-hp Fan Motor Heat (MBh) = 2.829 x Fan bhp+.4024. 3-hp Fan Motor Heat (MBh) = 2.900 x Fan bhp+.4750
4. Factory supplied motors, in commercial equipment, are definite purpose motors, specifically designed and tested to operate reliably and continuously
at all cataloged conditions. Using the full horsepower range of our fan motors as shown in our tabular data will not result in nuisance tripping or
premature motor failure. Our product's warranty will not be affected.
Performance Data
10 RT-SVF55F-EN

Table 11. Belt drive evaporator fan performance - 7.5 tons standard efficiency with gas heat - YSC090H3,4,W high gas heat
downflow airflow
External Static Pressure (Inches of Water)
.10 .20 .30 .40 .50 .60 .70 .80 .90 1.00
cfm rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp
1-hp Standard Motor & Field Supplied Low Static Drive(a)
(a) Field Supplied Fan Sheave AK74 and Belt AX35
1-hp Standard Motor & Drive
2400 675 0.51 727 0.60 772 0.68 815 0.76 857 0.85 896 0.93 935 1.02 971 1.11 1006 1.19 1041 1.29
2700 748 0.70 793 0.80 837 0.89 877 0.98 915 1.08 952 1.17 988 1.27 1022 1.37 1056 1.47 1089 1.57
3000 821 0.94 862 1.04 903 1.15 941 1.25 976 1.35 1011 1.46 1045 1.57 1077 1.67 1109 1.78 1140 1.89
3300 895 1.23 932 1.34 970 1.46 1007 1.58 1040 1.69 1072 1.79 1104 1.91 1134 2.03 1164 2.15 1194 2.27
3600 969 1.57 1004 1.70 1038 1.82 1073 1.95 1106 2.07 1136 2.19 1166 2.32 1195 2.44 1223 2.57 1251 2.70
3-hp Oversized Motor & Drive
Continued
External Static Pressure (Inches of Water)
1.10 1.20 1.30 1.40 1.50 1.60 1.70 1.80 1.90 2.00
cfm rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp
3-hp Oversized Motor & Drive
2400 1074 1.37 1105 1.46 1136 1.55 1165 1.64 1194 1.73 1222 1.83 1250 1.92 1275 2.00 1301 2.10 1326 2.18
2700 1121 1.66 1151 1.76 1181 1.86 1211 1.97 1238 2.06 1266 2.17 1292 2.27 1318 2.37 1344 2.47 1369 2.57
3000 1170 2.00 1199 2.11 1229 2.22 1256 2.33 1285 2.44 1311 2.55 1336 2.66 1363 2.77 1388 2.89 1413 3.00
3300 1223 2.39 1251 2.50 1279 2.62 1305 2.74 1333 2.87 1358 2.98 1384 3.11 1408 3.23 1434 3.35 — —
3600 1279 2.83 1305 2.95 1331 3.08 1357 3.21 1383 3.34 — — — — — — — — — —
3-hp Oversized Motor & Field Supplied High Static Drive(b)
(b)Field Supplied Fan Sheave BK52 and Belt BX30
Notes:
1. For standard evaporator fan speed (rpm), reference the standard motor and sheave/fan speed applicable table in the fan performance section.
2. Data includes pressure drop due to standard filters and wet coils. No accessories or options are included in pressure drop data.
3. 1-hp Fan Motor Heat (MBh) = 2.829 x Fan bhp+.4024. 3-hp Fan Motor Heat (MBh) = 2.900 x Fan bhp+.4750
4. Factory supplied motors, in commercial equipment, are definite purpose motors, specifically designed and tested to operate reliably and continuously
at all cataloged conditions. Using the full horsepower range of our fan motors as shown in our tabular data will not result in nuisance tripping or
premature motor failure. Our product's warranty will not be affected.
Performance Data
RT-SVF55F-EN 11

Table 12. Belt drive evaporator fan performance - 7.5 tons standard efficiency with gas heat - YSC090H3,4,W high gas heat
horizontal airflow
External Static Pressure (Inches of Water)
.10 .20 .30 .40 .50 .60 .70 .80 .90 1.00
cfm rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp
1-hp Standard Motor & Field Supplied Low Static Drive(a)
(a) Field Supplied Fan Sheave AK74 and Belt AX35
1-hp Standard Motor & Drive
2400 776 0.70 819 0.79 859 0.87 898 0.96 936 1.05 972 1.13 1007 1.22 1039 1.31 1071 1.40 1102 1.49
2700 863 0.97 901 1.07 938 1.16 974 1.26 1009 1.36 1043 1.46 1075 1.55 1106 1.65 1136 1.75 1165 1.85
3000 951 1.31 985 1.42 1019 1.52 1052 1.63 1084 1.73 1116 1.84 1146 1.95 1176 2.06 1205 2.17 1232 2.28
3300 1039 1.72 1071 1.84 1102 1.95 1132 2.07 1162 2.18 1191 2.30 1220 2.42 1248 2.54 1275 2.66 1302 2.78
3600 1128 2.21 1157 2.34 1186 2.46 1214 2.59 1242 2.71 1269 2.84 1296 2.97 1322 3.10 1348 3.23 1373 3.36
3-hp Oversized Motor & Drive 3-hp Oversized Motor & Field Supplied High Static Drive(b)
Continued
External Static Pressure (Inches of Water)
1.10 1.20 1.30 1.40 1.50 1.60 1.70 1.80 1.90 2.00
cfm rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp rpm bhp
3-hp Oversized Motor & Drive
2400 1132 1.58 1161 1.68 1189 1.77 1216 1.86 1242 1.95 1268 2.04 1293 2.13 1318 2.23 1342 2.33 1364 2.42
2700 1194 1.95 1222 2.05 1249 2.16 1276 2.26 1301 2.37 1327 2.48 1350 2.57 1374 2.68 1398 2.78 1421 2.88
3000 1260 2.39 1286 2.50 1312 2.61 1337 2.72 1363 2.84 1387 2.96 1410 3.07 1434 3.19 1457 3.31 — —
3300 1328 2.90 1353 3.02 1378 3.14 1402 3.26 1426 3.39 — — — — — — — — — —
3600 — — — — — — — — — — — — — — — — — — — —
3-hp Oversized Motor & Field Supplied High Static Drive(b)
(b)Field Supplied Fan Sheave BK52 and Belt BX30
Notes:
1. For standard evaporator fan speed (rpm), reference the standard motor and sheave/fan speed applicable table in the fan performance section.
2. Data includes pressure drop due to standard filters and wet coils. No accessories or options are included in pressure drop data.
3. 1-hp Fan Motor Heat (MBh) = 2.829 x Fan bhp+.4024. 3-hp Fan Motor Heat (MBh) = 2.900 x Fan bhp+.4750
4. Factory supplied motors, in commercial equipment, are definite purpose motors, specifically designed and tested to operate reliably and continuously
at all cataloged conditions. Using the full horsepower range of our fan motors as shown in our tabular data will not result in nuisance tripping or
premature motor failure. Our product's warranty will not be affected.
Performance Data
12 RT-SVF55F-EN

RT-SVF55F-EN 13
Pressure Curves
Figure 1. T/YSC090H Cooling cycle pressure curve (Based on Indoor Airflow of 400 CFM/Ton)
150
200
250
300
350
400
450
500
550
600
650
100110120130140150160170180190
Discharge Pressure (Psig)
Suction Pressure (Psig)
68/57 F ID WB/DB
74/62 F ID WB/DB
86/72 F ID WB/DB
80/67 F ID WB/DB
65 F OD Ambient
115 F OD Ambient
105 F OD Ambient
95 F OD Ambient
85 F OD Ambient
75 F OD Ambient
55 F OD Ambient

14 RT-SVF55F-EN
Subcooling Charging Chart
Figure 2. T/YSC090H subcooling charging chart - 320 cfm/ton
0
100
200
300
400
500
600
700
45 55 65 75 85 95 105 115 125 135
Liquid Pressure Leaving OD Coil, psig
Liquid Temperature Leaving OD Coil,
°F
Add charge
Remove charge

Figure 3. T/YSC090H subcooling charging chart - 400 cfm/ton
0
100
200
300
400
500
600
700
45 55 65 75 85 95 105 115 125 135
Liquid Pressure Leaving OD Coil, psig
Liquid Temperature Leaving OD Coil,°F
Add charge
Remove charge
Subcooling Charging Chart
RT-SVF55F-EN 15

Figure 4. T/YSC090H subcooling charging chart - 480cfm/ton
0
100
200
300
400
500
600
700
45 55 65 75 85 95 105 115 125 135
Liquid Pressure Leaving OD Coil, psig
Liquid Temperature Leaving OD Coil,°F
Add charge
Remove charge
Subcooling Charging Chart
16 RT-SVF55F-EN

RT-SVF55F-EN 17
Refrigerant Circuit
Figure 5. T/YSC090H refrigerant circuit
Compressor
Filter Drier
Air
Air
TXV
Refrigerant Flow
Cooling
System 1
Service Valve
High Pressure
Control DLTS
Low Pressure
Control
Service Valve
Service Valve
Microchannel
Top
ID COIL

©2020
Trane and American Standard have a policy of continuous product and product data improvement and reserve the right to change design and
specifications without notice. We are committed to using environmentally conscious print practices.
Trane and American Standard create comfortable, energy efficient indoor environments for commercial
and residential applications. For more information, please visit trane.com or americanstandardair.com.
RT-SVF55F-EN 17 Apr 2020
Supersedes RT-SVF55E-EN (Jan 2020)