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Installation Instructions
Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
5 Airfl ow Performance
Airfl ow performance data is based on cooling performance with a coil and no fi lter
in place. Check the performance table for appropriate unit size selection.
External static pressure should stay within the minimum and maximum limits
shown in the table below in order to ensure proper operation of both cooling,
heating, and electric heating operation.
Model
Number
Motor Speed
SCFM
External Static Pressure-Inches W.C.[kPa]
0[0] 0.1[.02] 0.2[. 05] 0.3[.07] 0.4[.10] 0.5[.12] 0.6[.15] 0.7[.17] 0.8[.20]
BRBA-60HWD1N1-M18
Tap (1)
SCFM 1385 1300 1230 1136 1045 959 867 787 717
Watts 164 171 180 192 204 217 232 238 249
Amps
1.43
1.48 1.56 1.64 1.74 1.84 1.94 1.99 2.07
Tap (2)
SCFM
1489
1432 1352 1279 1172 1088 1013 934 863
Watts 206 211 223 233 241 257 269 283 295
Amps 1.76
1.80 1.89 1.96 2.02 2.13
2.24 2.34 2.43
Tap (3)
SCFM 1638
1572 1511 1440 1368 1293
1205 1137 1067
Watts 293 319 333 343 348 355 365 373 383
Amps 2.03 2.08 2.15 2.17 2.20 2.27
2.31 2.39
2.42
Tap (4)
SCFM 1964 1903 1840 1786 1724 1655
1591 1488
1427
Watts 435 450 466 479 494 507 521 535 551
Amps
3.51 3.67
3.71 3.86 3.96 4.07 4.17 4.27
4.38
Tap (5)
SCFM
2293 2225
2193 2133 2090 2011 1877 1755
1614
Watts 661 682 708 710 731 730 720 701 667
Amps
5.13 5.29
5.49 5.52 5.67 5.59 5.66 5.45 5.17
Table 6
Bold outlined areas represent airfl ow outside of the required 300-450 cfm
ton range.
NOTES:
1. The high stage airfl ow must be used as the rated airfl ow for the full load
operation of machine.
2. The rated airfl ow of systems without electric heater kits requires between
300 and 450 cubic feet of air per minute (CFM).
3. The rated airfl ow of systems with electric heater kits requires between 350
and 450 cubic feet of air per minute (CFM).
4. The air distribution system has the greatest eff ect on airfl ow. Therefore, the
contractor should use only industry-recognized procedures.
5. Duct design and construction should be carefully done. System
performance can be lowered dramatically through poor design or
workmanship.
6. Air supplier ducts should be located along the perimeter of the conditioned
space and properly sized. Improper location or insuffi cient air fl ow may
cause drafts or noise in the ductwork.
7. Installers should balance the air distribution system to ensure proper quiet
airfl ow to all rooms in the home. An air velocity meter or airfl ow hood can be
used to balance and verify branch and system airfl ow (CFM).
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