Bosch IDS BOVA15, Installation Instructions Manual

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Installation Instructions
Bosch IDS BOVA15 Split System Heat Pump - BTC 761701317 A (02.2022)
3. Stabilize the system.
After
starting the system in cooling mode
, short press “FORCE” button,
and “ ” symbol should appear. System may take 10 minutes to ramp up.
Operate the system for a minimum of twenty (20) minutes.
After a twenty (20) minute stabilization period operating at 100%
capacity (i.e. once the compressor reaches the frequency shown in Table
6), maintain continuous operation while adjusting refrigerant charge.
After adjusting, operate system for a minimum of fi ve (5) minutes for
system to stabilize, otherwise repeat step 3.
Compressor Frequency in Force Mode in Cooling
ODU Capacity 2TON 3TON 4TON 5TON
Frequency (HZ) 46 66 54 60
Table 6
Figure 35
20 MIN.
4. Calculate superheat value (According to Table 7)

Measured Suction Line Temp = ________ºF

Measured Suction Line Pressure = _______ PSIG

Calculate superheat value = ________ºF
For indoor unit with adjustable TXV, set subcooling and adjust superheat
via adjustable TXV according to Table 9. For indoor unit with non-
adjustable TXV, check the superheat and set correct subcooling
according to superheat, refer to Table 9.
5. Calculate subcooling value (According to Table 8)

Measured Liquid Line Temp. = ________ºF

Measured Liquid Line Pressure = _______ PSIG

Calculate subcooling value = ________ºF
Figure 36
Insulation
If calculated subcooling value is lower than the design subcooling value
(Table 9), please add refrigerant. Repeat steps 3 through 5.
If the superheat is out of range, refer to Troubleshooting section of this
IOM.
Suction
Temp
(°F)
Final Superheat (°F)
6 8 10 12 14 16 18 20 22
Suction Gauge Pressure (PSI)
40 105 101 97 93 89 86 82 78 75
42 109 105 101 97 93 89 86 82 78
44 114 109 105 101 97 93 89 86 82
46 118 114 109 105 101 97 93 89 86
48 123 118 114 109 105 101 97 93 89
50 128 123 118 114 109 105 101 97 93
52 133 128 123 118 114 109 105 101 97
54 138 133 128 123 118 114 109 105 101
56 143 138 133 128 123 118 114 109 105
58 148 143 138 133 128 123 118 114 109
60 153 148 143 138 133 128 123 118 114
62 159 153 148 143 138 133 128 123 118
64 164 159 153 148 143 138 133 128 123
66 170 164 159 153 148 143 138 133 128
68 176 170 164 159 153 148 143 138 133
70 182 176 170 164 159 153 148 143 138
72 188 182 176 170 164 159 153 148 143
Table 7 R-410A Refrigerant chart - Final Superheat
Liquid
Temp
(°F)
Final Subcooling (°F)
6 7 8 9 10 11 12 13
Liquid Gauge Pressure (PSI)
55 173 176 179 182 185 188 191 195
60 188 191 195 198 201 204 208 211
65 204 208 211 215 218 221 225 229
70 221 225 229 232 236 239 243 247
75 239 243 247 251 255 259 262 266
80 259 262 266 270 275 279 283 287
85 279 283 287 291 295 300 304 309
90 300 304 309 313 318 322 327 331
95 322 327 331 336 341 346 351 355
100 346 351 355 360 365 370 376 381
105 370 376 381 386 391 397 402 407
110 397 402 407 413 418 424 430 435
115 424 430 435 441 447 453 459 465
120 453 459 465 471 477 483 489 496
125 483 489 469 502 508 515 521 528
Table 8 R-410A Refrigerant chart - Final Subcooling