Bosch BRBA-36HWD1N1-M18 - Airfl Ow Performance

| 13
Installation Instructions
Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703103 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 (Table 6) 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-36HWD1N1-M18
Tap (1)
SCFM 925
807 723 658 / / / / /
Watts 114 120 126 130 / / / / /
Amps 1.07
1.12 1.17
1.19 / / / / /
Tap (2)
SCFM 1103
993 911
841 776 710 596 / /
Watts 162 169 175 181 187 193 197 / /
Amps 1.45 1.51 1.56
1.6 1.65
1.69 1.72 / /
Tap (3)
SCFM 1132 1084 1027
972 907
832 762 700 637
Watts 193 201 207 214 221 229 238 243 247
Amps 2.03 2.08 2.15 2.17 2.20
2.27 2.31
2.39 2.42
Tap (4)
SCFM 1355 1310 1270 1180 1049
989 931
870 813
Watts 296 301 307 312 318 323 327 331 336
Amps
2.52 2.56
2.6 2.64 2.68 2.71 2.74
2.77 2.81
Tap (5)
SCFM
1522 1465
1364 1291 1231 1177 1121
1066 1017
Watts 426 432 438 443 448 452 456 460 466
Amps
3.49 3.54
3.58 3.62 3.65 3.68 3.7 3.74 3.78
Table 6
Bold outlined areas represent airfl ow outside of the required 300-450 cfm/ton
range.
NOTES:
1. This table is only used to select the highest blower speed.
2. The rated airfl ow of systems without electric heater kits requires between
300 and 450 cubic feet of air per minute (CFM).The rated airfl ow of
systems with electric heater kits requires between 350 and 450 cubic feet
of air per minute (CFM).
3. The air distribution system has the greatest eff ect on airfl ow. Therefore, the
contractor should use only industry-recognized procedures.
4. Duct design and construction should be carefully done. System
performance can be lowered dramatically through poor design or
workmanship.
5. 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.
6. 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).
7. 4 Speed Fan default is Tap (1), Tap (2), Tap (3), Tap (4)
For instructions on how to select fan speeds, refer to Section 6
of this manual.